CN210781472U - Temperature protection warning car light circuit - Google Patents
Temperature protection warning car light circuit Download PDFInfo
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- CN210781472U CN210781472U CN201921808584.XU CN201921808584U CN210781472U CN 210781472 U CN210781472 U CN 210781472U CN 201921808584 U CN201921808584 U CN 201921808584U CN 210781472 U CN210781472 U CN 210781472U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The utility model discloses a temperature protection alarm car lamp circuit, which comprises a temperature detection unit, a temperature control unit and an alarm prompt unit; the output end of the temperature detection unit is connected with the input end of the temperature control unit, and the output end of the temperature detection unit is connected with the input end of the alarm prompt unit; the temperature detection unit outputs a signal according to the temperature change of the car lamp through the thermistor RT1, then the radiator is turned on through the temperature control unit to dissipate heat when the temperature is too high, and meanwhile the alarm prompting unit starts sounding alarm prompting based on the signal. The utility model relates to a temperature protection warning car light circuit through thermistor RT1 temperature sensing regulation, not only can pass through relay RL1 control radiator through the temperature control unit, and then the adjustment temperature, can the sound production warning suggestion moreover, has protected the car light, has prolonged car light life to user's use experience has been improved.
Description
Technical Field
The utility model relates to a temperature protection field particularly, relates to a temperature protection warning car light circuit, adjusts through thermistor RT1 temperature sensing, not only can pass through relay RL1 control radiator through the temperature control unit, and then the adjustment temperature, can the sound production warning suggestion moreover, has protected the car light, has prolonged car light life to user's use experience has been improved.
Background
The car light is the border of the car, and can greatly reduce the occurrence of safety accidents when a driver drives at night, thereby ensuring the personal safety. When the vehicle is driven at night, the vehicle lamp can reduce the blind area of the visual field, reduce the occurrence of accidents and create a light and harmonious driving environment.
At present, more and more automobile lamps in the market use LED lamps, and the high-power LED automobile lamp has incomparable advantages compared with the traditional automobile lamp, such as energy conservation, long service life, quick response, small volume and the like. However, the LED lamp has a problem of over-high temperature during operation, and if the LED lamp is continuously used, the LED lamp has the disadvantages of reduced light source and continuously increased temperature, and finally even burns out. In order to solve the potential safety hazard, the heat dissipation function of the LED vehicle lamp must be considered.
SUMMERY OF THE UTILITY MODEL
To the problem among the correlation technique, the utility model provides a temperature protection warning car light circuit to overcome the above-mentioned technical problem that current correlation technique exists.
The technical scheme of the utility model is realized like this: a temperature protection alarm car lamp circuit comprises a temperature detection unit, a temperature control unit and an alarm prompt unit;
the output end of the temperature detection unit is connected with the input end of the temperature control unit, and the output end of the temperature control unit is connected with the input end of the alarm prompt unit;
the temperature detection unit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R16, a thermistor RT1, a potentiometer RV1, a potentiometer RV2, a light-emitting diode D1, a voltage-stabilizing integrated circuit U3 and a voltage follower U1: a and a capacitor C5;
one end of the resistor R1 and one end of the resistor R2 are both connected to VCC, the other end of the resistor R1 is connected to the anode of the light emitting diode D1, the other end of the resistor R2 is connected to the 3 rd pin of the regulator ic U3, the 1 st pin of the potentiometer RV1, one end of the resistor R3 and one end of the resistor R4, the cathode of the light emitting diode D1 is connected to the 2 nd pin of the regulator ic U3 and the 2 nd pin of the potentiometer RV1, the 3 rd pin of the regulator ic U3 is connected to the 3 rd pin of the potentiometer RV1, the other end of the resistor R3 is connected to one end of the thermistor RT1 and one end of the resistor R6, the other end of the resistor R4 is connected to the 1 st pin of the potentiometer RV2 and one end of the resistor R5, and the other end of the thermistor RT1 is connected to the 2 nd pin 2 of the potentiometer RV2, The 3 rd pins of the potentiometer RV2 are all grounded, and the other end of the resistor R5 is respectively connected with the voltage follower U1: the inverting input end of A and one end of the resistor R8 are connected, and the other end of the resistor R6 is respectively connected with one end of the resistor R7 and one end of the voltage follower U1: the non-inverting input end of A is connected, the other end of the resistor R7 is grounded, and the voltage follower U1: the output end of A is respectively connected with the other end of the resistor R8, one end of the capacitor C5 and one end of the resistor R16, and the other end of the capacitor C5 is grounded;
temperature control unit, including voltage follower U1: B. the circuit comprises a resistor R9, a resistor R10, a resistor R11, a resistor R13, a potentiometer RV3, a diode D2, a diode D3, a diode D4, a triode Q1 and a relay RL 1;
the voltage follower U1: b has a non-inverting input terminal connected to the other end of the resistor R16 and the other end of the resistor R8, respectively, and the voltage follower U1: the inverting input terminal of B is connected to the 1 st pin of the potentiometer RV3, the 3 rd pin of the potentiometer RV3, and one end of the resistor R9, the 2 nd pin of the potentiometer RV3 is grounded, the other end of the resistor R9 is connected to one end of the resistor R13 and the negative electrode of the diode D2, the positive electrode of the diode D2 is grounded, and the voltage follower U1: the output end of the B is connected with one end of the resistor R10, one end of the resistor R10 is connected with the negative electrode of the diode D3, the positive electrode of the diode D3 is connected with the base electrode of the triode Q1, the emitter electrode of the triode Q1 is connected with one end of the resistor R11, the other end of the resistor R11 is grounded, the collector electrode of the triode Q1 is respectively connected with the positive electrode of the diode D4 and one end of the relay RL1, and the negative electrode of the diode D4 is connected with the other end of the relay RL 1;
the alarm prompting unit comprises a transformer TR1, a diode D5, a voltage stabilizing diode D6, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a resistor R12, a resistor R14, a resistor R15, a battery BAT1, a one-way thyristor U2, a buzzer BUZ1, a triode Q2 and a triode Q3;
a 1 st pin of the transformer TR1 is connected with an input voltage, a 2 nd pin of the transformer TR1 is connected with an input voltage, a 4 th pin of the transformer TR1 is grounded, a 3 rd pin of the transformer TR1 is connected with an anode of the diode D5, a cathode of the diode D5 is connected with one end of the capacitor C1, one end of the resistor R12, a cathode of the diode D4 and the other end of the relay RL1, the other end of the capacitor C1 is grounded, the other end of the resistor R12 is connected with one end of the capacitor C2, a cathode of the zener diode D6, a cathode of the battery BAT1, a cathode of the unidirectional thyristor U2 and the other end of the resistor R13, the other end of the capacitor C2 is grounded, an anode of the zener diode D6 is grounded, a control electrode of the unidirectional thyristor U2 and one end of the resistor R14 are grounded, an anode of the unidirectional thyristor buzzer 68628 is connected with one end of the buzzer z1, One end of the capacitor C3 is connected to an emitter of the transistor Q2, a base of the transistor Q2 is connected to one end of the capacitor C4 and one end of the resistor R15, a collector of the transistor Q2 is connected to the other end of the capacitor C3 and a base of the transistor Q3, a collector of the transistor Q3 is connected to the other end of the buzzer BUZ1 and the other end of the capacitor C4, and an emitter of the transistor Q3 is connected to the other end of the resistor R14, the other end of the resistor R15 and a positive electrode of the battery BAT 1.
Further, the potentiometer RV1, the potentiometer RV2 and the potentiometer RV3 are all linear potentiometers, the potentiometer RV1 is used for adjusting the voltage for outputting stable bridge operation, the potentiometer RV2 is used for leveling the bridge, and the potentiometer RV3 is used for adjusting the comparison voltage.
Further, the voltage follower U1: a is a voltage follower LM324, the voltage follower U1: a outputs a detection voltage, the voltage follower U1: b is an operational amplifier F07, which forms a voltage comparator for comparing the detected voltage.
Further, the triode Q1, the triode Q2 and the triode Q3 are all triodes 2N5551, the triode Q1 controls the relay RL1 to be switched on, and the triode Q2 and the triode Q3 control the buzzer BUZ1 to be switched on.
Further, the transformer TR1 is a 4-pin transformer, and provides high voltage to make the buzzer BUZ1 sound.
Further, the regulator ic U3 provides a regulated voltage for the regulator ic TL 431.
The utility model has the advantages that: the utility model provides a temperature protection warning car light circuit, through thermistor RT1 temperature sensing regulation, not only can pass through relay RL1 control radiator through the temperature control unit, and then the adjustment temperature, can the sound production warning suggestion moreover, protected the car light, prolonged car light life to user's use experience has been improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a temperature protected warning vehicle lamp circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
According to an embodiment of the present invention, as shown in fig. 1, there is provided a temperature protection alarm lamp circuit, including a temperature detection unit, a temperature control unit and an alarm prompt unit;
the output end of the temperature detection unit is connected with the input end of the temperature control unit, and the output end of the temperature control unit is connected with the input end of the alarm prompt unit;
the temperature detection unit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R16, a thermistor RT1, a potentiometer RV1, a potentiometer RV2, a light-emitting diode D1, a voltage-stabilizing integrated circuit U3 and a voltage follower U1: a and a capacitor C5;
one end of the resistor R1 and one end of the resistor R2 are both connected to VCC, the other end of the resistor R1 is connected to the anode of the light emitting diode D1, the other end of the resistor R2 is connected to the 3 rd pin of the regulator ic U3, the 1 st pin of the potentiometer RV1, one end of the resistor R3 and one end of the resistor R4, the cathode of the light emitting diode D1 is connected to the 2 nd pin of the regulator ic U3 and the 2 nd pin of the potentiometer RV1, the 3 rd pin of the regulator ic U3 is connected to the 3 rd pin of the potentiometer RV1, the other end of the resistor R3 is connected to one end of the thermistor RT1 and one end of the resistor R6, the other end of the resistor R4 is connected to the 1 st pin of the potentiometer RV2 and one end of the resistor R5, and the other end of the thermistor RT1 is connected to the 2 nd pin 2 of the potentiometer RV2, The 3 rd pins of the potentiometer RV2 are all grounded, and the other end of the resistor R5 is respectively connected with the voltage follower U1: the inverting input end of A and one end of the resistor R8 are connected, and the other end of the resistor R6 is respectively connected with one end of the resistor R7 and one end of the voltage follower U1: the non-inverting input end of A is connected, the other end of the resistor R7 is grounded, and the voltage follower U1: the output end of A is respectively connected with the other end of the resistor R8, one end of the capacitor C5 and one end of the resistor R16, and the other end of the capacitor C5 is grounded;
temperature control unit, including voltage follower U1: B. the circuit comprises a resistor R9, a resistor R10, a resistor R11, a resistor R13, a potentiometer RV3, a diode D2, a diode D3, a diode D4, a triode Q1 and a relay RL 1;
the voltage follower U1: b has a non-inverting input terminal connected to the other end of the resistor R16 and the other end of the resistor R8, respectively, and the voltage follower U1: the inverting input terminal of B is connected to the 1 st pin of the potentiometer RV3, the 3 rd pin of the potentiometer RV3, and one end of the resistor R9, the 2 nd pin of the potentiometer RV3 is grounded, the other end of the resistor R9 is connected to one end of the resistor R13 and the negative electrode of the diode D2, the positive electrode of the diode D2 is grounded, and the voltage follower U1: the output end of the B is connected with one end of the resistor R10, one end of the resistor R10 is connected with the negative electrode of the diode D3, the positive electrode of the diode D3 is connected with the base electrode of the triode Q1, the emitter electrode of the triode Q1 is connected with one end of the resistor R11, the other end of the resistor R11 is grounded, the collector electrode of the triode Q1 is respectively connected with the positive electrode of the diode D4 and one end of the relay RL1, and the negative electrode of the diode D4 is connected with the other end of the relay RL 1;
the alarm prompting unit comprises a transformer TR1, a diode D5, a voltage stabilizing diode D6, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a resistor R12, a resistor R14, a resistor R15, a battery BAT1, a one-way thyristor U2, a buzzer BUZ1, a triode Q2 and a triode Q3;
a 1 st pin of the transformer TR1 is connected with an input voltage, a 2 nd pin of the transformer TR1 is connected with an input voltage, a 4 th pin of the transformer TR1 is grounded, a 3 rd pin of the transformer TR1 is connected with an anode of the diode D5, a cathode of the diode D5 is connected with one end of the capacitor C1, one end of the resistor R12, a cathode of the diode D4 and the other end of the relay RL1, the other end of the capacitor C1 is grounded, the other end of the resistor R12 is connected with one end of the capacitor C2, a cathode of the zener diode D6, a cathode of the battery BAT1, a cathode of the unidirectional thyristor U2 and the other end of the resistor R13, the other end of the capacitor C2 is grounded, an anode of the zener diode D6 is grounded, a control electrode of the unidirectional thyristor U2 and one end of the resistor R14 are grounded, an anode of the unidirectional thyristor buzzer 68628 is connected with one end of the buzzer z1, One end of the capacitor C3 is connected to an emitter of the transistor Q2, a base of the transistor Q2 is connected to one end of the capacitor C4 and one end of the resistor R15, a collector of the transistor Q2 is connected to the other end of the capacitor C3 and a base of the transistor Q3, a collector of the transistor Q3 is connected to the other end of the buzzer BUZ1 and the other end of the capacitor C4, and an emitter of the transistor Q3 is connected to the other end of the resistor R14, the other end of the resistor R15 and a positive electrode of the battery BAT 1.
In this embodiment, in order to detect the vehicle lamp temperature, the measurement accuracy can be improved by using PT100 as the thermistor RT 1. Since PT100 requires a regulated voltage to maintain proper operation, regulated integrated circuit TL431 is used as the regulated integrated circuit U3 to provide a regulated voltage. Because the thermistor RT1 generates heat when it works, the potentiometer RV1 is used to adjust the voltage for stabilizing the bridge operation, and reduce the working current of the thermistor RT1, so as to avoid the influence of heat on the measurement accuracy, the resistor R3, the resistor R4, the thermistor RT1, and the potentiometer RV2 form a bridge, and at normal temperature, the potentiometer RV2 is adjusted to level the bridge, when the thermistor RT1 changes due to the vehicle lamp temperature, the bridge is unbalanced, and the output voltage passes through the voltage follower U1: and A is amplified and then output.
In this embodiment, in order to be able to reflect in time when the vehicle lamp temperature is too high, the voltage follower U1: b, an operational amplifier F07 is used for forming a voltage comparator, the triode Q1 with the relay RL1 forms a power driver for determining an output signal, and the potentiometer RV3 can be adjusted to adjust the comparison voltage so as to accelerate the circuit working response. The transistor Q1 is turned on or off according to the received operating current, when the voltage follower U1: b, when the measured voltage received by B is greater than the comparison voltage, the voltage follower U1: b outputs positive voltage, the triode Q1 is conducted through a diode D3, the relay RL1 is driven to attract, the radiator starts to radiate heat of the vehicle lamp when working, and when the voltage follower U1: b, when the measured voltage received by B is less than the comparison voltage, the voltage follower U1: b, stopping outputting positive voltage, stopping the triode Q1, failing to drive the relay RL1 to suck, stopping the radiator from working, and stopping the heat radiation of the car lamp. According to the change of the detection voltage, the temperature of the car lamp can be adjusted in real time, and meanwhile, electric power cannot be wasted.
In this embodiment, the input voltage provided by the transformer TR1 and the output voltage of the temperature control unit form an operating voltage, so that the electronic switch formed by the triac U2 and the audible alarm formed by the buzzer BUZ1, the transistor Q2 and the transistor Q3 operate normally. When electrified, the voltage between the control electrode of the one-way thyristor U2 and the cathode of the one-way thyristor U2 consists of two parts: one part is a voltage-stabilized power supply which is led out from the voltage-stabilizing diode D6 and is connected to the cathode of the unidirectional silicon controlled rectifier U2, and the other part is the battery BAT1 power supply which is led to the control electrode of the unidirectional silicon controlled rectifier U2 through the resistor R14. For the controllable silicon, if the voltage of the control electrode is larger than the voltage of the cathode, the controllable silicon is conducted, otherwise, the controllable silicon is cut off. The operating voltage is affected by the output voltage of the temperature control unit. When the working voltage is normally output, the voltage between the control electrode of the one-way thyristor U2 and the cathode of the one-way thyristor U2 is smaller than the trigger voltage of the one-way thyristor U2, the one-way thyristor U2 is cut off, and the alarm circuit is disconnected. When the temperature of the vehicle lamp is detected to be too high, the output voltage of the temperature control unit is reduced, so that the working voltage is reduced, the voltage between the control electrode and the cathode of the one-way thyristor U2 is only supplied with power by the battery BAT1, the voltage between the control electrode of the one-way thyristor U2 and the cathode of the one-way thyristor U2 is greater than the trigger voltage of the one-way thyristor U2, the one-way thyristor U2 is conducted, and the buzzer BUZ1 sends out an alarm signal.
The working principle is as follows: the LED driving circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R16, a thermistor RT1, a potentiometer RV1, a potentiometer RV2, a light-emitting diode D1, a voltage-stabilizing integrated circuit U3 and a voltage follower U1: a and a capacitor C5 form a temperature detection unit; the LED D1 is used as the lighting of the car lamp; the voltage stabilizing integrated circuit U3 is used for providing a stabilizing voltage; the resistor R2 and the potentiometer RV1 are used for voltage division; the potentiometer RV1 is used for enabling the voltage stabilizing integrated circuit U3 to output voltage for stabilizing bridge operation, reducing the working current of the thermistor RT1 and avoiding heating to influence measurement accuracy; the resistor R3, the resistor R4, the thermistor RT1 and the potentiometer RV2 are used for forming an electric bridge; the potentiometer RV2 is used for leveling the bridge; the thermistor RT1 is used for detecting the temperature of the light emitting diode D1 as a vehicle lamp; the voltage follower U1: the function of A is to output a voltage signal after amplification.
Voltage follower U1: B. a resistor R9, a resistor R10, a resistor R11, a resistor R13, a potentiometer RV3, a diode D2, a diode D3, a diode D4, a triode Q1 and a relay RL1 form a temperature control unit; the potentiometer RV3 is used for adjusting the comparison voltage; the voltage follower U1: b is used for forming a voltage comparator; the triode Q1 is used for forming a power driver with the relay RL1 and determining an output signal; the transistor Q1 is used to switch on or off according to the received operating current.
An alarm prompting unit is composed of a transformer TR1, a diode D5, a voltage stabilizing diode D6, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a resistor R12, a resistor R14, a resistor R15, a battery BAT1, a one-way thyristor U2, a buzzer BUZ1, a triode Q2 and a triode Q3; the transformer TR1 is used for providing input voltage; the one-way thyristor U2 is used for forming an electronic switch; the buzzer BUZ1, the triode Q2 and the triode Q3 are used for forming an acoustic alarm.
To sum up, with the help of the above technical scheme of the utility model, design a temperature protection warning car light circuit, adjust through thermistor RT1 temperature sensing, not only can pass through relay RL1 control radiator through the temperature control unit, and then the adjustment temperature, can sound production warning suggestion moreover, protected the car light, prolonged car light life to user's use experience has been improved.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A temperature protection alarm car lamp circuit is characterized by comprising a temperature detection unit, a temperature control unit and an alarm prompt unit;
the output end of the temperature detection unit is connected with the input end of the temperature control unit, and the output end of the temperature control unit is connected with the input end of the alarm prompt unit;
the temperature detection unit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R16, a thermistor RT1, a potentiometer RV1, a potentiometer RV2, a light-emitting diode D1, a voltage-stabilizing integrated circuit U3 and a voltage follower U1: a and a capacitor C5;
one end of the resistor R1 and one end of the resistor R2 are both connected to VCC, the other end of the resistor R1 is connected to the anode of the light emitting diode D1, the other end of the resistor R2 is connected to the 3 rd pin of the regulator ic U3, the 1 st pin of the potentiometer RV1, one end of the resistor R3 and one end of the resistor R4, the cathode of the light emitting diode D1 is connected to the 2 nd pin of the regulator ic U3 and the 2 nd pin of the potentiometer RV1, the 3 rd pin of the regulator ic U3 is connected to the 3 rd pin of the potentiometer RV1, the other end of the resistor R3 is connected to one end of the thermistor RT1 and one end of the resistor R6, the other end of the resistor R4 is connected to the 1 st pin of the potentiometer RV2 and one end of the resistor R5, and the other end of the thermistor RT1 is connected to the 2 nd pin 2 of the potentiometer RV2, The 3 rd pins of the potentiometer RV2 are all grounded, and the other end of the resistor R5 is respectively connected with the voltage follower U1: the inverting input end of A and one end of the resistor R8 are connected, and the other end of the resistor R6 is respectively connected with one end of the resistor R7 and one end of the voltage follower U1: the non-inverting input end of A is connected, the other end of the resistor R7 is grounded, and the voltage follower U1: the output end of A is respectively connected with the other end of the resistor R8, one end of the capacitor C5 and one end of the resistor R16, and the other end of the capacitor C5 is grounded;
temperature control unit, including voltage follower U1: B. the circuit comprises a resistor R9, a resistor R10, a resistor R11, a resistor R13, a potentiometer RV3, a diode D2, a diode D3, a diode D4, a triode Q1 and a relay RL 1;
the voltage follower U1: b has a non-inverting input terminal connected to the other end of the resistor R16 and the other end of the resistor R8, respectively, and the voltage follower U1: the inverting input terminal of B is connected to the 1 st pin of the potentiometer RV3, the 3 rd pin of the potentiometer RV3, and one end of the resistor R9, the 2 nd pin of the potentiometer RV3 is grounded, the other end of the resistor R9 is connected to one end of the resistor R13 and the negative electrode of the diode D2, the positive electrode of the diode D2 is grounded, and the voltage follower U1: the output end of the B is connected with one end of the resistor R10, one end of the resistor R10 is connected with the negative electrode of the diode D3, the positive electrode of the diode D3 is connected with the base electrode of the triode Q1, the emitter electrode of the triode Q1 is connected with one end of the resistor R11, the other end of the resistor R11 is grounded, the collector electrode of the triode Q1 is respectively connected with the positive electrode of the diode D4 and one end of the relay RL1, and the negative electrode of the diode D4 is connected with the other end of the relay RL 1;
the alarm prompting unit comprises a transformer TR1, a diode D5, a voltage stabilizing diode D6, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a resistor R12, a resistor R14, a resistor R15, a battery BAT1, a one-way thyristor U2, a buzzer BUZ1, a triode Q2 and a triode Q3;
a 1 st pin of the transformer TR1 is connected with an input voltage, a 2 nd pin of the transformer TR1 is connected with an input voltage, a 4 th pin of the transformer TR1 is grounded, a 3 rd pin of the transformer TR1 is connected with an anode of the diode D5, a cathode of the diode D5 is connected with one end of the capacitor C1, one end of the resistor R12, a cathode of the diode D4 and the other end of the relay RL1, the other end of the capacitor C1 is grounded, the other end of the resistor R12 is connected with one end of the capacitor C2, a cathode of the zener diode D6, a cathode of the battery BAT1, a cathode of the unidirectional thyristor U2 and the other end of the resistor R13, the other end of the capacitor C2 is grounded, an anode of the zener diode D6 is grounded, a control electrode of the unidirectional thyristor U2 and one end of the resistor R14 are grounded, an anode of the unidirectional thyristor buzzer 68628 is connected with one end of the buzzer z1, One end of the capacitor C3 is connected to an emitter of the transistor Q2, a base of the transistor Q2 is connected to one end of the capacitor C4 and one end of the resistor R15, a collector of the transistor Q2 is connected to the other end of the capacitor C3 and a base of the transistor Q3, a collector of the transistor Q3 is connected to the other end of the buzzer BUZ1 and the other end of the capacitor C4, and an emitter of the transistor Q3 is connected to the other end of the resistor R14, the other end of the resistor R15 and a positive electrode of the battery BAT 1.
2. The temperature protection alarm vehicle lamp circuit according to claim 1, characterized in that the potentiometer RV1, the potentiometer RV2 and the potentiometer RV3 are all linear potentiometers.
3. The temperature protection alarm lamp circuit as claimed in claim 1, wherein the voltage follower U1: a is a voltage follower LM324, the voltage follower U1: b is an operational amplifier F07.
4. The temperature protection alarm car lamp circuit according to claim 1, wherein the transistor Q1, the transistor Q2 and the transistor Q3 are all transistors 2N 5551.
5. The temperature protection alarm lamp circuit as claimed in claim 1, wherein the transformer TR1 is a 4-pin transformer.
6. The lamp circuit of claim 1, wherein the voltage regulator integrated circuit U3 is a voltage regulator integrated circuit TL 431.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921808584.XU CN210781472U (en) | 2019-10-25 | 2019-10-25 | Temperature protection warning car light circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022041757A1 (en) * | 2020-08-26 | 2022-03-03 | 南京汉尔斯生物科技有限公司 | Smart measurement garment connected to auxiliary wheelchair, and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022041757A1 (en) * | 2020-08-26 | 2022-03-03 | 南京汉尔斯生物科技有限公司 | Smart measurement garment connected to auxiliary wheelchair, and method |
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Address after: Kanglou Road, Industrial Concentration Zone, Dailou Town, Jinhu County, Huai'an City, Jiangsu Province, 211600 Patentee after: Jiangsu Shangfu Electronics Co.,Ltd. Address before: 211700 Kanglou Road, Industrial Concentration Zone, Dalou Town, Jinhu County, Huai'an City, Jiangsu Province Patentee before: Jiangsu Shangfu Electronics Co.,Ltd. |