Electric arc and illumination dual-purpose circuit
By designing an arc and lighting circuit containing a micro transformer and field effect tube lighting circuit, the fire risk and combustible gas explosion problems when used in dim environments are solved, and the functions of no open flame ignition and lighting are realized.
Patent Information
- Application Number
- CN202420536894.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-19
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-03-19
AI Technical Summary
Existing lighters are prone to fire when used in dim environments, and relying on combustible gases, they are prone to explode during high temperatures or impacts, and can easily cause car spontaneous combustion after exposure to the sun.
Design an arc and lighting dual-purpose circuit, including lighting circuit, micro transformer, control processor and switching amplifier circuit, to generate arcs through micro transformers, and realize lighting functions through a common source lighting circuit composed of field effect tubes.
It realizes the function of igniting items without open flames, reduces the risk of fire, and avoids the risk of combustible gas explosion. It also has the lighting function and photometric adjustment function of traditional flashlights.
Smart Images
Figure CN222564010U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic product development, in particular to an arc and lighting dual-purpose circuit. Background Art
[0002] Lighters and flashlights are the two most commonly used devices in people's daily lives. In many cases, when people are looking for items or need lighting in a dim environment or a small space, they use lighters as flashlights, so they often cause fires due to carelessness. At the same time, since the most common lighters are gas lighters, and gas lighters rely on the pressure of the liquefied combustible gas inside to discharge the combustible gas to achieve the purpose of combustion, they will explode in a high temperature environment or when they are hit hard. This is also one of the main reasons why placing a gas lighter inside a car and exposing it to the sun in summer can easily cause the car to spontaneously combust. Therefore, how to integrate the function of a lighter and the lighting function of a flashlight, so that one device can achieve both lighting and igniting objects without open flames, is a technical difficulty that technicians in this field need to overcome. Utility Model Content
[0003] The purpose of the utility model is to overcome the above problems and provide a dual-purpose circuit for arc and lighting, so as to achieve the functions of both lighting and igniting objects without open flames.
[0004] The purpose of the utility model is achieved by the following technical solution: an arc and lighting dual-purpose circuit, including a lighting circuit, a micro-transformer T, a control processor U, a switching amplifier circuit connected to the micro-transformer T at one end and to the control processor U at the other end, and a power supply circuit for providing working voltage and current to the micro-transformer T and the control processor U; the lighting circuit is connected in series between the power supply circuit and the control processor U, and one or more arc pairs for generating an arc are provided at the output end of the micro-transformer T.
[0005] Furthermore, the number of the micro-transformers T is more than one, the number of the switching amplifier circuit is one, and all the micro-transformers T are connected to the control processor U through the switching amplifier circuit; or, the number of the micro-transformers T and the switching amplifier circuits is equal and more than two, and each micro-transformer T is connected to the control processor U through its corresponding switching amplifier circuit.
[0006] In order to ensure the use effect, the switch amplifier circuit described in the utility model is preferably implemented by an amplifier circuit composed of field effect tubes.
[0007] Furthermore, in order to ensure the safety of the power supply circuit and the control processor U, the utility model also provides a charging protection circuit connected to the control processor U and the power supply circuit in the circuit, and the charging protection circuit is preferably implemented using a GC4054S circuit.
[0008] In order to display the remaining power of the power supply circuit, a digital tube display circuit or an LED display circuit for displaying the power of the power supply circuit is provided in the circuit.
[0009] As one of the preferred methods, the lighting circuit described in the present invention is preferably implemented by a common source lighting circuit composed of field effect transistors.
[0010] The common source lighting circuit is composed of a field effect tube Q3, an LED1, a resistor R3, a resistor R4, a resistor R5 and a capacitor C2; the N pole of the LED1 is connected to the drain of the field effect tube Q3, and its P pole is connected to the control processor U in sequence through the resistor R3 and the resistor R4; the connection point of the resistor R3 and the resistor R4 is connected to the positive electrode of the power supply circuit; the gate of the field effect tube Q3 is connected to the control processor U, and its source is grounded; after the resistor R5 and the capacitor C2 are connected in parallel, one end thereof is connected to the gate of the field effect tube Q3, and the other end thereof is grounded.
[0011] The control processor U described in the utility model is a MC35P7040 single chip microcomputer.
[0012] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0013] 1. The utility model innovatively combines the arc ignition function of an electronic lighter and the lighting function of a flashlight, and can simultaneously realize the arc ignition and lighting functions of an electronic lighter through one circuit.
[0014] 2. The circuit of the utility model can generate an electric arc, which can not only effectively avoid the defect of traditional electronic lighters that need to contact the tungsten wire when igniting objects, but also does not produce open flames, which can significantly reduce the risk of fire; at the same time, since the utility model does not use flammable gas when igniting, it is not easy to explode or spontaneously combust.
[0015] 3. The circuit of the utility model not only has the traditional lighting function, but also can realize the function of light intensity adjustment. Especially when in emergency, the strobe function can be realized by controlling the circuit to send out an SOS distress signal.
[0016] 4. The circuit structure of the utility model is simple and suitable for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1This is a schematic diagram of the circuit structure when the number of the micro-transformer T and the switch amplifier circuit of the utility model is both one;
[0018] Figure 2 This is a schematic diagram of the circuit structure when the number of the micro-transformer T and the switch amplifier circuit of the utility model is two;
[0019] Figure 3 The figure is a schematic diagram of the circuit structure when the circuit of the utility model is provided with a charging protection circuit.
[0020] Figure 4 The present invention is a schematic diagram of a circuit structure when the circuit of the present invention is provided with a digital tube display circuit. DETAILED DESCRIPTION
[0021] The present invention will be further described in detail below in conjunction with specific embodiments, but the implementation methods of the present invention are not limited thereto.
[0022] Example 1
[0023] like Figure 1 As shown, the basic functional circuit of the arc and lighting dual-purpose circuit in this embodiment includes a lighting circuit, a micro-transformer T, a control processor U, a voltage-stabilizing switch amplifier circuit and a power supply circuit. Among them, the control processor U is preferably implemented by a single-chip microcomputer such as MC35P7040, which is used to control the conduction and shutdown of the micro-transformer T and the lighting circuit to control the lighting function of the lighting circuit and the arc generation function of the micro-transformer T. This embodiment focuses on the MC35P7040 single-chip microcomputer as an example for explanation, and other single-chip microcomputers with the same pins or functions can be used as the control processor in the utility model.
[0024] The function of the micro transformer T is to boost the working current and voltage provided by the power supply circuit so that the arc pair at the output end of the micro transformer T can generate an arc to ignite the object. The arc pair is a lead with a skin led out of the secondary coil of the micro transformer T. The number of the arc pairs can be one pair, two pairs or more pairs, which is selected according to the actual situation.
[0025] The number of micro-transformers T is directly proportional to the required arc pairs. When there is only one micro-transformer T, one pair of arc pairs can be generated; when there are two micro-transformers T, two pairs of arc pairs can be generated; when there are three micro-transformers T, three pairs of arc pairs can be generated, and so on. In actual operation, all micro-transformers T can be fixedly installed and used together to form a corresponding voltage input terminal.
[0026] According to actual needs, the number of the switch amplifier circuits can be implemented by one or more. When one switch amplifier circuit is used, all the micro-transformers T are connected to the control processor U through the switch amplifier circuit; when multiple switch amplifier circuits are used, the number of the switch amplifier circuits is preferably matched with the number of micro-transformers T to ensure that each micro-transformer T can be connected to the control processor U through a corresponding switch amplifier circuit.
[0027] In order to ensure the actual operation effect of the utility model, the switch amplifier circuit is preferably implemented by an amplifier circuit composed of field effect tubes, which not only has a switch function, but also has a certain current and voltage amplification function. Each switch amplifier circuit in this embodiment is composed of a field effect tube and its bias resistor, and in order to ensure that each switch amplifier circuit can achieve the same control function, the parameters of the field effect tubes and their bias resistors in all switch amplifier circuits are exactly the same. Among them, Figure 1 The schematic diagram of a circuit with only one switching amplifier circuit is shown. Figure 2 A schematic diagram of a circuit with two switching amplifier circuits is shown.
[0028] like Figure 1 The switch amplifier circuit shown is composed of a field effect tube Q1 and bias resistors R8 and R9. When connected, the bias resistors R8 and R9 are connected in series, and one end of the bias resistor R8 is connected to the No. 11 pin of the control processor U, and the other end of the bias resistor R9 is grounded, so that the No. 11 pin of the control processor U is grounded after passing through the bias resistors R8 and R9 in sequence. The signal control end (i.e., the gate G) of the field effect tube Q1 is connected to the series connection point of the bias resistors R8 and R9, the input end (i.e., the drain D) of the field effect tube Q1 is connected to the primary coil output end of the micro transformer T, and the output end (i.e., the source S) of the field effect tube Q1 is grounded, that is, this embodiment adopts a common source method to form the amplification and switching functions of the field effect tube.
[0029] When the number of the switch amplifier circuit and the number of the micro transformer T are both 2, in addition to the connection between the above-mentioned one switch amplifier circuit and one micro transformer T, another micro transformer T is also connected to the switch amplifier circuit in the same connection manner. That is, the second switch amplifier circuit is composed of the field effect transistor Q2 and the bias resistor R7 and the bias resistor R10. When connected, the bias resistor R7 and the bias resistor R10 are connected in series, one end of the bias resistor R7 is connected to the No. 13 pin of the control processor U, and the other end of the bias resistor R10 is grounded, so that the No. 13 pin of the control processor U is grounded after passing through the bias resistor R7 and the bias resistor R10 in sequence. The signal control terminal (i.e., gate G) of the field effect tube Q2 is connected to the series connection point of the bias resistor R7 and the bias resistor R10, the input terminal (i.e., drain D) of the field effect tube Q2 is connected to the output terminal of the primary coil of the micro-transformer T, and the output terminal (i.e., source S) of the field effect tube Q2 is grounded, that is, this embodiment adopts a common source method to form the amplification and switching functions of the field effect tube.
[0030] When there are three switch amplifier circuits and three micro-transformers T forming three arc pairs, their connection relationship is exactly the same as the above connection relationship, and will not be repeated.
[0031] The power supply circuit is preferably implemented by a rechargeable battery. For the convenience of charging, a USB charging interface is also required in the power supply circuit. Since the power supply circuit is a very mature technology, the utility model will not be described in detail. In order to prevent the control processor U from being damaged when charging or supplying power through the USB charging interface, the utility model needs to set two voltage-dividing resistors at the USB charging interface, namely resistor R1 and resistor R2. After the resistor R1 and resistor R2 are connected in series, one end of the resistor R1 and the resistor R2 are connected to the positive electrode of the USB charging interface, and the other end of the resistor R1 and the resistor R2 are connected to the ground. The No. 4 pin of the control processor U is connected to the connection point of the resistor R1 and the resistor R2 to ensure that the voltage it receives does not exceed its rated voltage.
[0032] The lighting circuit is preferably implemented by a common source lighting circuit composed of field effect transistors. Figure 1 , 2 As shown, the common source lighting circuit is composed of a field effect transistor Q3, an LED1, a resistor R3, a resistor R4, a resistor R5 and a capacitor C2.
[0033] When connected, the N pole of the LED1 is connected to the drain of the field effect tube Q3, and its P pole is connected to the control processor U after passing through the resistor R3 and the resistor R4 in sequence; the connection point of the resistor R3 and the resistor R4 is connected to the positive electrode of the power supply circuit; the gate of the field effect tube Q3 is connected to the control processor U, and its source is grounded; after the resistor R5 and the capacitor C2 are connected in parallel, one end thereof is connected to the gate of the field effect tube Q3, and the other end thereof is grounded. The field effect tube Q3 is a C009T type.
[0034] In order to facilitate the switching of the control functions of the control processor U according to actual needs, the utility model needs to set a logic control switch K and a function switch SW on the control processor U to jointly realize the relevant control functions of the control processor U. At the same time, in order to increase the use atmosphere of the utility model, a number of groups of LED atmosphere lights can also be set in the circuit, and the number can be arbitrarily selected according to actual conditions. Figures 1-2 As shown, the LED atmosphere light group is composed of LED2~LED7. When connected, they are connected in groups of two in series between the control processor U and the negative electrode of the rechargeable battery, that is, the P poles of LED2 and LED3 are connected to pin 8 of the control processor U, and the N poles of LED2 and LED3 are connected to the negative electrode of the rechargeable battery; the P poles of LED4 and LED5 are connected to pin 9 of the control processor U, and the N poles of LED4 and LED5 are connected to the negative electrode of the rechargeable battery; the P poles of LED6 and LED7 are connected to pin 10 of the control processor U, and the N poles of LED6 and LED7 are connected to the negative electrode of the rechargeable battery.
[0035] The working principle of the above circuit is: when the logic control switch K controls the control processor U to be in the lighting function state, pressing the function switch SW for the first time will cause the No. 5 pin of the control processor U to output a high-level control signal, so that the gate of the field effect tube Q3 obtains a large control voltage, the circuit of LED1 is turned on, and LED1 emits full light; pressing the function switch SW for the second time will cause the No. 5 pin of the control processor U to output a low-level control signal, so that the gate of the field effect tube Q3 obtains a small control voltage, the circuit of LED1 is turned on, and LED1 emits half light; when the function switch SW is pressed for the third time, the No. 5 pin of the control processor U will output an intermittent high-level control signal, so that the gate of the field effect tube Q3 intermittently obtains a large control voltage, the circuit of LED1 is intermittently turned on, and LED1 emits intermittent full light, that is, the flash function is realized.
[0036] When the logic control switch K controls the control processor U to be in the arc generating function state, as long as the function switch SW is pressed, pin 11 and / or pin 13 of the control processor U will provide a control voltage, so that the field effect transistor Q1 is turned on, and the circuit between the power supply circuit, the micro transformer T, and the discharge circuit is turned on, and an arc is generated at the secondary end of the micro transformer T.
[0037] It should be noted that when the present invention is in the lighting function state, the number of times the function switch SW is pressed and the strength of the control signal issued each time it is pressed can be defined by the user, and there is no particular order. For example, in the lighting function state, the first press of the function switch SW realizes the flash function, the second press of the function switch SW realizes the full brightness of LED1, and the third press of the function switch SW realizes the half brightness of LED1.
[0038] Example 2
[0039] like Figure 3 As shown, this embodiment adds a charging protection circuit on the basis of embodiment 1, and the charging protection circuit is used to ensure that the power supply circuit and the control processor U can be protected in real time when charging through the USB interface. The charging protection circuit in this embodiment is preferably implemented by the GC4054S type integrated chip IC1. Similarly, this embodiment can also be implemented by other types of chips with the same protection function. In this embodiment, the VCC pin of the integrated chip IC1 is grounded after capacitor C3, its CHRG pin is connected to pin 2 of the control processor U, and its BAT pin is connected to pin 1 of the control processor U and the positive electrode of the rechargeable battery; one end of the resistor R6 is connected to the PROG pin of the integrated chip IC1, and the other end is grounded.
[0040] Example 3
[0041] like Figure 4 As shown, this embodiment adds a digital tube display circuit for displaying the power of the power supply circuit on the basis of Embodiment 2, that is, a digital tube display circuit for displaying the power of the rechargeable battery is added. Figure 4 As shown, the digital tube display circuit can be implemented by conventional products, such as WX2519 digital tube and its driving circuit. Alternatively, according to actual needs, the digital tube display circuit can also be implemented by LED display circuit, which is a relatively mature technology at present, and will not be described in detail in this embodiment.
[0042] As described above, the utility model can be well implemented.
Claims
1. An arc and lighting dual-purpose circuit, characterized in that: It includes a lighting circuit, a micro transformer T, a control processor U, a switch amplifier circuit connected to the micro transformer T at one end and connected to the control processor U at the other end, and a power supply circuit for providing working voltage and current to the micro transformer T and the control processor U; The lighting circuit is connected in series between the power supply circuit and the control processor U, and one or more arc pairs for generating arcs are provided at the output end of the micro-transformer T.
2. The arc and lighting dual-purpose circuit according to claim 1, characterized in that: The number of the micro-transformers T is more than one, the number of the switching amplifier circuit is one, and all the micro-transformers T are connected to the control processor U through the switching amplifier circuit; or, the number of the micro-transformers T and the switching amplifier circuits is equal and more than two, and each micro-transformer T is connected to the control processor U through the switching amplifier circuit corresponding thereto.
3. The arc and lighting dual-purpose circuit according to claim 2, characterized in that: The switch amplifier circuit is an amplifier circuit composed of field effect transistors.
4. An arc and lighting dual-purpose circuit according to claim 2 or 3, characterized in that: The circuit is also provided with a charging protection circuit connected to the control processor U and the power supply circuit.
5. The arc and lighting dual-purpose circuit according to claim 4, characterized in that: The charging protection circuit is a GC4054S type circuit.
6. The arc and lighting dual-purpose circuit according to claim 4, characterized in that: The circuit is provided with a digital tube display circuit or an LED display circuit for displaying the electric quantity of the power supply circuit.
7. The arc and lighting dual-purpose circuit according to claim 4, characterized in that: The lighting circuit is a common source lighting circuit composed of field effect tubes.
8. The arc and lighting dual-purpose circuit according to claim 7, characterized in that: The common source lighting circuit is composed of a field effect tube Q3, an LED1, a resistor R3, a resistor R4, a resistor R5 and a capacitor C2; the N pole of the LED1 is connected to the drain of the field effect tube Q3, and its P pole is connected to the control processor U in sequence through the resistor R3 and the resistor R4; the connection point of the resistor R3 and the resistor R4 is connected to the positive electrode of the power supply circuit; the gate of the field effect tube Q3 is connected to the control processor U, and its source is grounded; after the resistor R5 and the capacitor C2 are connected in parallel, one end thereof is connected to the gate of the field effect tube Q3, and the other end thereof is grounded.
9. The arc and lighting dual-purpose circuit according to claim 8, characterized in that: The field effect tube Q3 is of C009T type.
10. An arc and lighting dual-purpose circuit according to any one of claims 1 to 3, characterized in that: The control processor U is a MC35P7040 single chip microcomputer.