Power supply device and patting device

Abstract

The utility model discloses a power supply device, which is used for supplying power to a battery and comprises a battery; the power supply circuit is connected with the battery; the power supply output port is mounted on the power supply circuit, and the power supply output port is used for physically contacting with the power supply interface of the power supply circuit to form a power supply loop; and the switch is connected with the power supply circuit. The power supply device is adopted to replace a built-in battery piece to supply power to the photo paper, on one hand, the price for purchasing the photo paper is reduced, and on the other hand, the endurance of the photo paper is longer than before.

Description

Technical Field

[0001] This utility model relates to the field of power supply devices, specifically to a power supply device and an instant camera. Background Technology

[0002] Polaroid instant cameras (also known as Polaroid) are well-known high-fidelity cameras, primarily products of the Polaroid company. While models like the Polaroid SX70, SX70sonar, SLR680, and SLR690 folding instant cameras are discontinued, they have gradually regained popularity due to the resurgence of retro fashion. Because of their design, folding instant cameras such as the SX70, SX70sonar, SLR680, and SLR690 are mainly powered by batteries built into the photographic paper.

[0003] The applicant's research revealed that this design, which relies on the built-in battery of the photographic paper for power, directly contributes to the high price of photographic paper. Furthermore, the built-in battery has a very limited capacity; after only a few shots, the battery depletes, rendering Polaroid instant cameras unusable and causing significant inconvenience to users, thus limiting the user experience of this classic camera. Utility Model Content

[0004] To overcome the above-mentioned technical defects, this utility model provides a power supply device and an instant camera.

[0005] To solve the above problems, this utility model is implemented according to the following technical solution:

[0006] The power supply device described in this utility model is used for powering instant cameras, and includes:

[0007] Battery;

[0008] A power supply circuit, which is connected to the battery;

[0009] A power output port is installed on the power supply circuit and is used to physically contact the power supply interface of the instant camera to form a power supply loop.

[0010] A switch, which is connected to the power supply circuit.

[0011] Preferably, the instant camera opens or closes by touching the switch, thereby controlling the battery to power or de-power the instant camera.

[0012] Preferably, a support frame for opening and closing is installed on the side wall of the instant camera;

[0013] The instant camera being opened or closed causes the support frame to touch the switch, thereby controlling the battery to power or de-power the instant camera.

[0014] Preferably, the side wall of the instant camera is provided with a baffle, and the baffle is provided with a long slot;

[0015] One end of the support frame is set in the long slot and moves within it, while the other end of the support frame is set on the front cover of the instant camera. The support frame slides within the long slot to complete the opening and closing action of the front cover of the instant camera.

[0016] The power supply circuit includes a flexible printed circuit board; the switch is mounted on the flexible printed circuit board, which is adhered to the baffle, such that the switch is located at one end of the elongated slot, and the switch is triggered to open or close when the support frame slides to one end of the elongated slot.

[0017] Preferably, the power supply device further includes a rear cover;

[0018] The power supply circuit includes a circuit board, which is mounted on the rear cover.

[0019] The back cover is used to mount on a Polaroid camera. The back cover has a cavity, and the battery is installed at the bottom of the cavity.

[0020] Two first metal contacts for contacting the input port of the flexible printed circuit board are provided at the edge of the circuit board.

[0021] The circuit board is equipped with a current input port;

[0022] The current input port includes two second metal contacts for contacting the instant camera power supply interface.

[0023] Preferably, the circuit board includes an undervoltage overcurrent and overvoltage protection circuit and a boost overcurrent protection circuit;

[0024] The power supply circuit also includes an electronic switch and a drive power boost circuit;

[0025] The undervoltage, overcurrent, and overvoltage protection circuit is connected to the battery.

[0026] The electronic switch is connected to the undervoltage, overcurrent, and overvoltage protection circuit.

[0027] The boost overcurrent protection circuit is connected to the electronic switch;

[0028] The drive power boost circuit is connected to the undervoltage, overcurrent, and overvoltage protection circuit via a switch, and the drive power boost circuit is also connected to the electronic switch.

[0029] Preferably, the undervoltage, overcurrent, and overvoltage protection circuit includes an overcurrent protection chip, a first capacitor, a second capacitor, and a first resistor;

[0030] The first capacitor, the first resistor, and the second capacitor are connected in series.

[0031] One side of the first capacitor is connected to one side of the switch and the positive terminal of the battery, respectively. The other side of the first capacitor is connected to the first pin and the second pin of the overcurrent protection chip, respectively, and is connected to ground.

[0032] One side of the second capacitor is connected to the third pin of the overcurrent protection chip, and the other side of the second capacitor is connected to the negative terminal of the battery, the fourth pin of the overcurrent protection chip, and the fifth pin of the overcurrent protection chip.

[0033] Preferably, the boost overcurrent protection circuit includes a boost chip, a diode, an inductor, a second resistor, a third resistor, and a third capacitor;

[0034] The inductor, the diode, the second resistor, and the third resistor are connected in series.

[0035] One side of the inductor is connected to one side of the switch, the first pin of the boost chip, and the second pin of the boost chip, respectively; the other side of the inductor is connected to the fifth pin of the boost chip and the positive terminal of the diode, respectively.

[0036] One side of the third resistor is connected to the sixth pin of the boost chip, and the other side of the third resistor is connected to the third pin of the boost chip, the fourth pin of the boost chip, the fourth pin of the electronic switch, and the sixth pin of the electronic switch.

[0037] One side of the third capacitor is connected to the negative terminal of the diode and the first pin of the power output port, respectively, and the other side of the third capacitor is connected to the other side of the third resistor and the second pin of the power output port, respectively.

[0038] Preferably, the driving boost circuit includes a fourth capacitor, a fifth capacitor, a fourth resistor, a fifth resistor, and a driving chip;

[0039] One side of the fourth resistor is connected to one side of the switch, and the other side of the fourth resistor is connected to the third pin of the driver chip.

[0040] One side of the fifth resistor is connected to the second pin of the driver chip, the first pin of the electronic switch, the third pin of the electronic switch, and the positive terminal of the battery; the other side of the fifth resistor is connected to the second pin of the driver chip.

[0041] One side of the fourth capacitor is connected to one side of the fifth resistor, and the other side of the fourth capacitor is connected to the other side of the fifth resistor, the sixth pin of the driver chip, and the fifth pin of the electronic switch.

[0042] The first pin of the driver chip is connected to the sixth pin of the driver chip through the fifth capacitor;

[0043] The fifth pin of the driver chip is connected to the other side of the switch.

[0044] Compared with the prior art, the beneficial effects of this utility model are:

[0045] The present invention discloses a power supply device for powering an instant camera, comprising: a battery; a power supply circuit connected to the battery; a power output port mounted on the power supply circuit and used to physically contact the power supply interface of the instant camera to form a power supply circuit; and a switch connected to the power supply circuit.

[0046] This utility model patent provides a power supply device for instant cameras. Using this device, no modification to the camera's circuitry is required; power is supplied directly through the device's connection to the camera's power interface. This improvement preserves the integrity of the original circuitry and does not affect its performance. Furthermore, this power supply device completely changes the reliance of Polaroid SX70, SX70sonar, SLR680, and SLR690 folding instant cameras on built-in batteries. It enables independent power supply, freeing the camera from the limitations of film and battery power, allowing users greater freedom in shooting. Compared to purchasing film with pre-installed batteries, this independent power supply device is significantly cheaper and ensures stable operation of the instant camera for extended periods, providing photography enthusiasts with an economical, efficient, and reliable power solution. Attached Figure Description

[0047] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0048] Figure 1 This is a circuit diagram of the power supply device of this utility model.

[0049] Figure 2 This is the circuit flowchart of this utility model.

[0050] Figure 3 This is a schematic diagram of the switch of this utility model.

[0051] Figure 4 This is a schematic diagram of the installation of the switch of this utility model.

[0052] Figure 5 This is a schematic diagram of the power supply device structure of this utility model.

[0053] In the diagram: 1-Charging interface, 2-Management circuit, 3-Low power control circuit, 4-Charging indicator circuit, 5-Undervoltage, overcurrent and overvoltage protection circuit, 6-Drive power supply boost circuit, 7-Boost overcurrent protection circuit, 8-Switch, 9-Flexible printed circuit board, 10-Support frame, 11-Baffle, 12-Back cover, 13-Circuit board, 14-First metal contact, 15-Second metal contact. Detailed Implementation

[0054] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0055] like Figures 1-5 As shown, this utility model provides a preferred embodiment of a power supply device and a Polaroid camera.

[0056] This embodiment applies to folding instant cameras such as SX70, SX70sonar, SLR680, and SLR690.

[0057] like Figures 1-2 The present invention provides a power supply device, comprising: a battery;

[0058] A power supply circuit, which is connected to the battery;

[0059] A power output port is installed on the power supply circuit and is used to physically contact the power supply interface of the instant camera to form a power supply loop.

[0060] Switch 8 is connected to the power supply circuit.

[0061] In one specific implementation, the switch 8 can be a mechanical switch, a push-button switch, or an inductive switch, etc.

[0062] The instant camera opens or closes by touching the switch 8, thereby controlling the battery to power or de-power the instant camera.

[0063] A support frame 10 for opening and closing is installed on the side wall of the instant camera;

[0064] The instant camera being opened or closed causes the support frame 10 to touch the switch 8, thereby controlling the battery to power or de-power the instant camera.

[0065] like Figures 3-4As shown, the side wall of the instant camera is provided with a baffle 11, and the baffle 11 is provided with a long slot.

[0066] A support frame 10 for opening and closing the instant camera is installed on the side wall of the instant camera. One end of the support frame 10 is set in the long slot and moves within it. The other end of the support frame 10 is set on the front cover of the instant camera. The support frame 10 completes the opening and closing action of the front cover of the instant camera by sliding in the long slot.

[0067] The power supply circuit includes a flexible printed circuit board 9; the switch 8 is disposed on the flexible printed circuit board 9, and the flexible printed circuit board 9 is attached to the baffle 11, so that the switch 8 is disposed at one end of the long slot, and the switch 8 is triggered to open or close when the support frame 10 slides to one end of the long slot.

[0068] In one specific implementation, the flexible printed circuit board 9 is adhered to the baffle 11, positioned to the left of the elongated slot, maintaining a suitable distance between them. Both ends of the elongated slot have circular latches; the switch 8 is attached to the flexible printed circuit board 9, with its contact point positioned at the circular latch on the left side of the elongated slot. Specifically, the switch 8 is a normally open switch. When the support frame 10 slides to the left circular latch of the elongated slot, the switch 8 closes, and the instant camera enters the working state; when the support frame 10 moves away from the left circular latch of the elongated slot, the instant camera enters the off state.

[0069] In one specific implementation, the flexible printed circuit board 9 is adhered to the baffle 11, positioned to the right of the elongated slot, maintaining a suitable distance between them. Both ends of the elongated slot have circular latches; the switch 8 is attached to the flexible printed circuit board 9, with its contact point positioned at the circular latch on the right side of the slot. Specifically, the switch 8 is a normally closed switch. When the support frame 10 moves away from the circular latch on the right side of the elongated slot, the switch 8 is opened, and the instant camera enters the working state; when the support frame 10 slides back to the circular latch on the right side of the elongated slot, the instant camera enters the off state.

[0070] like Figure 5 As shown, the power supply device also includes a rear cover 12;

[0071] The power supply circuit includes a circuit board 13, which is mounted on the rear cover 12.

[0072] The back cover 12 is used to be mounted on a Polaroid camera. The back cover 12 has a cavity, and the battery is installed in the cavity of the back cover 12.

[0073] Two first metal contacts 14 for contacting the input port of the flexible printed circuit board are provided at the edge of the circuit board 13;

[0074] The circuit board 13 is provided with a current input port;

[0075] The current input port includes two second metal contacts 15 for contacting the instant camera power supply interface.

[0076] In one specific implementation, the opening and closing actions of the switch 8 and the power output port are synchronized. When the instant camera is unfolded, the two metal contacts 15 of the power input port contact the instant camera's power supply interface. Simultaneously, the instant camera's support frame 10 opens, causing the switch to conduct internally, thereby triggering the power supply circuit of the power supply device, allowing the instant camera to immediately enter working mode. When the instant camera is closed, the two metal contacts 15 of the power input port disengage from the instant camera's power supply interface. Simultaneously, the instant camera's support frame 10 cooperates with the instant camera's closure, causing the switch 8 to internally cut off, disconnecting the power supply circuit of the power supply device, and the instant camera enters a power-off state. This operating mode ensures that the instant camera can be turned off as needed, fundamentally avoiding the problem of excessive battery drain caused by user negligence in forgetting to turn it off. At the same time, it reduces battery consumption in standby mode to a certain extent, greatly enhancing the convenience of using the instant camera and significantly improving battery efficiency.

[0077] like Figures 1-2 As shown, the circuit board 13 includes an undervoltage overcurrent and overvoltage protection circuit and a boost overcurrent protection circuit;

[0078] The power supply circuit also includes an electronic switch and a drive power boost circuit;

[0079] The undervoltage, overcurrent, and overvoltage protection circuit is connected to the battery. The undervoltage, overcurrent, and overvoltage protection circuit is used to monitor abnormal current during the battery power supply process, and is used to protect the battery and prevent phenomena such as battery explosion caused by overcurrent and overvoltage.

[0080] The electronic switch is connected to the undervoltage, overcurrent, and overvoltage protection circuit.

[0081] The boost overcurrent protection circuit is connected to the electronic switch. The boost overcurrent protection circuit is used to detect whether the current inside the instant camera is abnormal and to protect the instant camera. At the same time, it boosts the lower voltage to the voltage required for the instant camera to work.

[0082] The drive power boost circuit is connected to the undervoltage, overcurrent and overvoltage protection circuit via a switch. The drive power boost circuit is also connected to the electronic switch. The drive power boost circuit is used to control the power supply inside the instant camera.

[0083] In one specific implementation, the undervoltage, overcurrent, and overvoltage protection circuit includes an overcurrent protection chip, a first capacitor, a second capacitor, and a first resistor;

[0084] The first capacitor, the first resistor, and the second capacitor are connected in series.

[0085] One side of the first capacitor is connected to one side of the switch and the positive terminal of the battery, respectively. The other side of the first capacitor is connected to the first pin and the second pin of the overcurrent protection chip, respectively, and is connected to ground.

[0086] One side of the second capacitor is connected to the third pin of the overcurrent protection chip, and the other side of the second capacitor is connected to the negative terminal of the battery, the fourth pin of the overcurrent protection chip, and the fifth pin of the overcurrent protection chip.

[0087] In one specific implementation, the boost overcurrent protection circuit includes a boost chip, a diode, an inductor, a second resistor, a third resistor, and a third capacitor;

[0088] The inductor, the diode, the second resistor, and the third resistor are connected in series.

[0089] One side of the inductor is connected to one side of the switch, the first pin of the boost chip, and the second pin of the boost chip, respectively; the other side of the inductor is connected to the fifth pin of the boost chip and the positive terminal of the diode, respectively.

[0090] One side of the third resistor is connected to the sixth pin of the boost chip, and the other side of the third resistor is connected to the third pin of the boost chip, the fourth pin of the boost chip, the fourth pin of the electronic switch, and the sixth pin of the electronic switch.

[0091] One side of the third capacitor is connected to the negative terminal of the diode and the first pin of the power output port, respectively, and the other side of the third capacitor is connected to the other side of the third resistor and the second pin of the power output port, respectively.

[0092] In one specific implementation, the drive power supply boost circuit includes a fourth capacitor, a fifth capacitor, a fourth resistor, a fifth resistor, and a drive chip.

[0093] One side of the fourth resistor is connected to one side of the switch, and the other side of the fourth resistor is connected to the third pin of the driver chip.

[0094] One side of the fifth resistor is connected to the second pin of the driver chip, the first pin of the electronic switch, the third pin of the electronic switch, and the positive terminal of the battery; the other side of the fifth resistor is connected to the second pin of the driver chip.

[0095] One side of the fourth capacitor is connected to one side of the fifth resistor, and the other side of the fourth capacitor is connected to the other side of the fifth resistor, the sixth pin of the driver chip, and the fifth pin of the electronic switch.

[0096] The first pin of the driver chip is connected to the sixth pin of the driver chip through the fifth capacitor;

[0097] The fifth pin of the driver chip is connected to the other side of the switch.

[0098] The power supply circuit also includes a charging management circuit;

[0099] The charging management circuit includes a management circuit, a charging indicator circuit, and a low-power control circuit.

[0100] The management circuit is connected to the undervoltage, overcurrent, and overvoltage protection circuit and the low-power control circuit, respectively, and the management circuit is used to prevent the battery from being overcharged.

[0101] The low-power control circuit is used to connect to the charging indicator circuit, and the low-power control circuit is used to control the operation of the circuit in the power supply device, as well as to improve the battery life and system reliability.

[0102] The charging indicator circuit is used to display whether the battery is fully charged and whether it is being charged.

[0103] Furthermore, the management circuit includes a charging management chip, diode D1, diode D2, bidirectional diode, optocoupler, sixth resistor, seventh resistor, eighth resistor, charging interface, and sixth capacitor;

[0104] One side of the sixth resistor is connected to the two VBUS pins of the charging interface, the second pin of the charging management chip, the fourth pin of the charging management chip, and the fifth pin of the charging management chip, respectively; the other side of the sixth resistor is connected to one side of the sixth capacitor.

[0105] One side of the seventh resistor is connected to the first pin of the charging management chip, the third pin of the charging management chip, and one side of the sixth capacitor, respectively; the other side of the seventh resistor is connected to the other side of the sixth capacitor.

[0106] The positive terminal of the light-emitting diode of the optocoupler is connected to the negative terminal of the bidirectional diode through the eighth resistor;

[0107] The collector of the phototransistor of the optocoupler is connected to the eighth pin of the charging management chip, and the eighth pin of the charging management chip is connected to one side of the fourth resistor, one side of the switch, and one side of the inductor, respectively.

[0108] The fifth pin of the charging management chip is connected to the first positive input terminal of the bidirectional diode, and the second positive input terminal of the bidirectional diode is connected to one side of the fourth capacitor.

[0109] The sixth pin of the charging management chip is connected to the negative terminal of the diode D1;

[0110] The seventh pin of the charging management chip is connected to the negative terminal of the diode D2.

[0111] Furthermore, the low-power control circuit includes a transistor and a low-power control chip;

[0112] The base of the transistor is connected to the fifth pin of the low-power control chip and the other side of the first capacitor, respectively.

[0113] The collector of the transistor is connected to the third pin of the low-power control chip and the negative terminal of the light-emitting diode of the optocoupler.

[0114] The emitter of the transistor is connected to one side of the second resistor and is also connected to ground;

[0115] The sixth pin of the low-power control chip is connected to the positive terminal of the diode D1;

[0116] The seventh pin of the low-power control chip is connected to the positive terminal of the diode D2.

[0117] Furthermore, the charging indicator circuit includes a ninth resistor, a tenth resistor, a first light-emitting diode, and a second light-emitting diode;

[0118] The fifth resistor is connected in series with the first light-emitting diode;

[0119] The sixth resistor is connected in series with the second light-emitting diode;

[0120] The positive terminal of the first light-emitting diode is connected to the negative terminal of the bidirectional diode and the base of the transistor, respectively;

[0121] The positive terminal of the second light-emitting diode is connected to the negative terminal of the bidirectional diode and the base of the transistor, respectively;

[0122] One side of the ninth resistor is connected to the ninth pin of the low-power control chip.

[0123] One side of the tenth resistor is connected to the tenth pin of the low-power control chip.

[0124] In this embodiment, the power supply device is an external circuit for the instant camera, without damaging the camera's own circuit structure. The switch and power output port of the power supply device are closely linked to the instant camera's unfolding and closing. When the instant camera is unfolded, the switch is internally conductive, and the power output port contacts the instant camera's power supply interface. At this time, the power supply device begins to supply power to the instant camera, allowing it to quickly enter the working state. When the instant camera is closed, the switch is internally cut off, and the power output port loses contact with the instant camera's power supply interface. The connection between the power supply device and the instant camera's power supply interface is immediately disconnected, and the instant camera enters the off state. By synchronizing the instant camera's working and off states with its unfolding and closing actions, the design avoids the problem of wasted power caused by users forgetting to turn off the instant camera. It also eliminates battery power loss in standby mode, greatly improving the convenience of using the instant camera and extending battery life.

[0125] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A power supply device for powering an instant camera, characterized in that, include: Battery; A power supply circuit, which is connected to the battery; A power output port is connected to the power supply circuit, and the power output port is used to physically contact the power supply interface of the instant camera to form a power supply loop. Switch (8) is connected to the power supply circuit.

2. The power supply device according to claim 1, characterized in that: The instant camera opens or closes by touching the switch (8), thereby controlling the battery to power or de-power the instant camera.

3. The power supply device according to claim 2, characterized in that: A support frame (10) for opening and closing is installed on the side wall of the instant camera; The instant camera being opened or closed causes the support frame (10) to touch the switch (8), thereby controlling the battery to power or de-power the instant camera.

4. The power supply device according to claim 3, characterized in that: The side wall of the instant camera is provided with a baffle (11), and the baffle (11) is provided with a long slot; One end of the support frame (10) is set in the long slot and moves within it. The other end of the support frame (10) is set on the front cover of the instant camera. The support frame (10) slides in the long slot to complete the opening and closing action of the front cover of the instant camera. The power supply circuit includes a flexible printed circuit board (9); the switch (8) is disposed on the flexible printed circuit board (9), and the flexible printed circuit board (9) is attached to the baffle (11), so that the switch (8) is disposed at one end of the long slot, and the switch (8) is triggered to open or close when the support frame (10) slides to one end of the long slot.

5. The power supply device according to claim 1, characterized in that: The power supply device also includes a rear cover (12); The power supply circuit includes a circuit board (13), which is mounted on the rear cover (12); The back cover (12) is used to be mounted on a Polaroid camera. The back cover (12) has a cavity in which the battery is installed. Two first metal contacts (14) for contacting the input port of the flexible printed circuit board are provided at the edge of the circuit board (13); The circuit board (13) is provided with a current input port; The current input port includes two second metal contacts (15) for contacting the instant camera power supply interface.

6. The power supply device according to claim 5, characterized in that: The circuit board (13) includes an undervoltage overcurrent and overvoltage protection circuit and a boost overcurrent protection circuit; The power supply circuit includes an electronic switch and a drive power boost circuit. The undervoltage, overcurrent, and overvoltage protection circuit is connected to the battery. The electronic switch is connected to the undervoltage, overcurrent, and overvoltage protection circuit. The boost overcurrent protection circuit is connected to the electronic switch, and the boost overcurrent protection circuit is physically connected to the power supply interface of the instant camera through the power output port; The drive power boost circuit is connected to the undervoltage, overcurrent, and overvoltage protection circuit via a switch, and the drive power boost circuit is also connected to the electronic switch.

7. The power supply device according to claim 6, characterized in that: The undervoltage, overcurrent, and overvoltage protection circuit includes an overcurrent protection chip, a first capacitor, a second capacitor, and a first resistor; the first capacitor, the first resistor, and the second capacitor are connected in series. One side of the first capacitor is connected to one side of the switch and the positive terminal of the battery, respectively. The other side of the first capacitor is connected to the first pin and the second pin of the overcurrent protection chip, respectively, and is connected to ground. One side of the second capacitor is connected to the third pin of the overcurrent protection chip, and the other side of the second capacitor is connected to the negative terminal of the battery, the fourth pin of the overcurrent protection chip, and the fifth pin of the overcurrent protection chip.

8. The power supply device according to claim 6, characterized in that: The boost overcurrent protection circuit includes a boost chip, a diode, an inductor, a second resistor, a third resistor, and a third capacitor; The inductor, the diode, the second resistor, and the third resistor are connected in series. One side of the inductor is connected to one side of the switch, the first pin of the boost chip, and the second pin of the boost chip, respectively; the other side of the inductor is connected to the fifth pin of the boost chip and the positive terminal of the diode, respectively. One side of the third resistor is connected to the sixth pin of the boost chip, and the other side of the third resistor is connected to the third pin of the boost chip, the fourth pin of the boost chip, the fourth pin of the electronic switch, and the sixth pin of the electronic switch. One side of the third capacitor is connected to the negative terminal of the diode and the first pin of the power output port, respectively, and the other side of the third capacitor is connected to the other side of the third resistor and the second pin of the power output port, respectively.

9. The power supply device according to claim 6, characterized in that: The boost circuit for the driving power supply includes a fourth capacitor, a fifth capacitor, a fourth resistor, a fifth resistor, and a driving chip; One side of the fourth resistor is connected to one side of the switch, and the other side of the fourth resistor is connected to the third pin of the driver chip. One side of the fifth resistor is connected to the second pin of the driver chip, the first pin of the electronic switch, the third pin of the electronic switch, and the positive terminal of the battery; the other side of the fifth resistor is connected to the second pin of the driver chip. One side of the fourth capacitor is connected to one side of the fifth resistor, and the other side of the fourth capacitor is connected to the other side of the fifth resistor, the sixth pin of the driver chip, and the fifth pin of the electronic switch. The first pin of the driver chip is connected to the sixth pin of the driver chip through the fifth capacitor; The fifth pin of the driver chip is connected to the other side of the switch.

10. A Polaroid camera, characterized in that, Includes the power supply device as described in any one of claims 1 to 9.

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