Power supply circuit

Abstract

The utility model discloses a power supply circuit, and belongs to the technical field of power supply circuits. Comprising a charging part and an electricity storage part, the charging part and the electricity storage part are connected through a main line, and a rectifier tube D2 is connected to the main line in series; and the electricity storage part consists of a capacitor bank of which the negative electrodes are connected in parallel and grounded, a diode bank, a resistor R1 which is connected on the main line in series and is positioned between the capacitor bank and the positive electrode end of the diode bank, and + 1.1 V which is led outwards. According to the utility model, high-reliability output is formed, and power loss does not occur in a certain period of time.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply circuits, in particular to a power supply circuit. Background Art

[0002] Stable and reliable clock signals are required in many circuits to ensure high-precision operation. However, due to various internal or external factors, clock signals can become abnormal due to power supply issues, faults, and other issues. Therefore, designing a highly reliable circuit that can provide regular, emergency, and temporary power supply, ensuring that power is maintained for a certain period of time, is a technical challenge that needs to be solved. Utility Model Content

[0003] The purpose of the utility model is to provide a power supply circuit to form a high-reliability output without power loss within a certain period of time.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A power supply circuit includes a charging part and a power storage part, wherein the charging part and the power storage part are connected via a main line, and a rectifier tube D2 is connected in series to the main line;

[0006] The power storage part is composed of a capacitor group with its negative electrode connected in parallel to the ground, a diode group, a resistor R1 connected in series on the main line and located between the positive terminals of the capacitor group and the diode group, and a +1.1V led out.

[0007] In some embodiments, the rectifier tube D2 is SM4007PL.

[0008] In some embodiments, the capacitor group is composed of a 0.22F / 5.5V capacitor C2 and several small-capacity capacitors connected in parallel.

[0009] In some embodiments, the small-capacity capacitor is 47uF, and 17 of them are connected in parallel.

[0010] In some embodiments, the diode group consists of three diodes D1 , D4 , and D3 connected in series.

[0011] In some embodiments, the rectifier tube D2 is 10KR.

[0012] In some embodiments, the charging part is provided with a TYPE-C socket for connecting to an external power supply;

[0013] The CC1 and CC2 pins of the TYPE-C socket are connected in series with resistors R3 and R2 respectively and grounded; the resistors R3 and R2 are 5.1K;

[0014] The two VBUS pins of the TYPE-C socket are connected in parallel to the main line.

[0015] In some embodiments, it further includes an indicator light part located on the positive electrode side of the rectifier tube D2; the indicator light part includes: an LED + 1.1 in series with a resistor R4.

[0016] In some embodiments, the indicator light part further includes: a resistor R5, a photoresistor R6 connected in series, and a triode Q1 located between R5 and R6;

[0017] The collector of the triode Q1 is connected to the LED + 2.1.

[0018] In some embodiments, the photoresistor R6 uses GL5528, and the triode Q1 uses S8050.

[0019] Compared with the prior art, the present utility model provides a power supply circuit, which has the following beneficial effects.

[0020] 1. The present utility model forms a highly reliable output and does not lose power within a certain period of time.

[0021] Other advantages, objectives, and features of the present utility model will be described to some extent in the subsequent description; and to some extent, based on the study of the following text, they will be obvious to those skilled in the art; or, they can be learned from the practice of the present utility model. Brief Description of the Drawings

[0022] Figure 1 is the circuit diagram of the present utility model.

[0023] Figure 2 is the front view of the circuit board of the present utility model.

[0024] Figure 3 is the back view of the circuit board of the present utility model. Detailed Embodiments

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0026] Refer to Figure 1 , a power supply circuit includes a charging part and a power storage part. The charging part and the power storage part are connected by a main line, and a rectifier tube D2 is connected in series on the main line; the rectifier tube D2 controls the current direction to charge the power storage part.

[0027] Among them, the rectifier tube D2 uses SM4007PL.

[0028] The electricity storage part consists of: a capacitor bank with the negative electrode connected in parallel to the ground, a diode bank, a resistor R1 connected in series on the main line and located between the positive extreme of the capacitor bank and the diode bank, and an externally led +1.1V; forming a stable and reliable external +1.1V output.

[0029] Among them, the resistor R1 uses 10KR; it is appropriately adjusted according to the power consumption.

[0030] The capacitor bank is composed of a 0.22F / 5.5V capacitor C2 and several small-capacity capacitors connected in parallel. For example, the small-capacity capacitors use 47uF and 17 are connected in parallel.

[0031] The diode bank is composed of three series-connected diodes D1, D4, and D3.

[0032] Among them, the diodes D1, D4, and D3 use silicon tubes, and the voltage drop is between 0.4 and 0.6V.

[0033] In some embodiments, the charging part is provided with a TYPE-C socket to connect to external power supply.

[0034] Preferably, when the TYPE-C socket is welded, it is slightly upturned upwards, which is convenient for plugging and unplugging.

[0035] Among them, the CC1 and CC2 pins of the TYPE-C socket are respectively connected in series with resistors R3 and R2 and grounded; the resistors R3 and R2 are 5.1K; at the same time, the two VBUS pins of the TYPE-C socket are connected in parallel to the main line.

[0036] In some embodiments, it also includes an indicator part located on the positive electrode side of the rectifier diode D2; the indicator part includes: an LED +1.1 connected in series with a resistor R4, and R4 uses 1KR.

[0037] The indicator part also includes: series-connected resistors R5, a photoresistor R6, and a triode Q1 located between R5 and R6; among them, the other end of the photoresistor R6 is grounded; the emitter of the triode Q1 is grounded, and the collector is connected to LED +2.1.

[0038] When the TYPE-C socket is powered, the photoresistor R6 provides current to the base of the triode Q1, making Q1 conduct, thereby lighting up the LED lamp bead; the resistors R5 and the photoresistor R6 can adjust the brightness of the LED according to the actual ambient light.

[0039] Specifically, the photoresistor R6 uses GL5528; the triode Q1 uses S8050.

[0040] Correspondingly, if there is no lighting requirement, the photoresistor R6 can be selected not to be set.

[0041] When this device is in use, it is externally powered and connected to the TYPE-C socket. The LED lights up to indicate the charging status; the capacitor bank is charged and outputs +1.1V externally; after disconnecting the external power supply to the TYPE-C socket, the capacitor bank temporarily provides power for a period of time.

[0042] In this utility model, a highly reliable output is formed and there is no power loss within a certain period of time.

[0043] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes should be covered within the protection scope of the present utility model.

[0044] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0045] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A power supply circuit, characterized in that, It includes a charging part and a power storage part. The charging part and the power storage part are connected by a main line, and a rectifier diode D2 is connected in series on the main line. The power storage part consists of: a capacitor bank with the negative electrode connected in parallel to the ground, a diode bank, a resistor R1 connected in series on the main line and located between the positive extreme of the capacitor bank and the diode bank, and an externally led +1.1V.

2. The power supply circuit according to claim 1, wherein The rectifier diode D2 uses SM4007PL.

3. The power supply circuit according to claim 1, wherein The capacitor bank is composed of a 0.22F / 5.5V capacitor C2 and several small-capacity capacitors connected in parallel.

4. The power supply circuit according to claim 3, wherein, The small-capacity capacitors use 47uF, and 17 are connected in parallel.

5. The power supply circuit according to claim 1, wherein The diode bank is composed of three series-connected diodes D1, D4, and D3.

6. The power supply circuit according to claim 1, characterized in that, The rectifier diode D2 uses 10KR.

7. The power supply circuit according to claim 1, wherein The charging part is provided with a TYPE-C socket to connect to external power supply; the CC1 and CC2 pins of the TYPE-C socket are respectively connected in series with resistors R3 and R2 and grounded; the two VBUS pins of the TYPE-C socket are connected in parallel to the main line.

8. The power supply circuit according to claim 1, wherein It also includes an indicator part located on the positive electrode side of the rectifier diode D2; the indicator part includes: an LED +1.1 connected in series with a resistor R4.

9. The power supply circuit according to claim 8, characterized in that, The indicator part also includes: a series-connected resistor R5, a photoresistor R6, and a triode Q1 located between R5 and R6; the other end of the photoresistor R6 is grounded; the emitter of the triode Q1 is grounded, and the collector is connected to LED - 2.

1.

10. The power supply circuit according to claim 9, wherein The photoresistor R6 uses GL5528; the triode Q1 uses S8050.

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