CN220911554U - Electric heater control circuit - Google Patents
Electric heater control circuit Download PDFInfo
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- CN220911554U CN220911554U CN202322375477.5U CN202322375477U CN220911554U CN 220911554 U CN220911554 U CN 220911554U CN 202322375477 U CN202322375477 U CN 202322375477U CN 220911554 U CN220911554 U CN 220911554U
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- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 17
- 239000010703 silicon Substances 0.000 claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims description 68
- 230000000087 stabilizing effect Effects 0.000 claims description 38
- 238000001514 detection method Methods 0.000 claims description 15
- 230000006641 stabilisation Effects 0.000 claims 2
- 238000011105 stabilization Methods 0.000 claims 2
- 241001465754 Metazoa Species 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 13
- 244000144972 livestock Species 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 101000746134 Homo sapiens DNA endonuclease RBBP8 Proteins 0.000 description 1
- 101000969031 Homo sapiens Nuclear protein 1 Proteins 0.000 description 1
- 102100021133 Nuclear protein 1 Human genes 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Abstract
The utility model discloses a control circuit of an electric heater, which belongs to the technical field of heating equipment, wherein a heating tube switch module comprises a triode, a silicon controlled rectifier and a heating tube, the b pole of the triode is electrically connected with a control output end HEAR of an MCU, the e pole of the triode is grounded, the c pole of the triode is electrically connected with a live wire of a mains supply after being connected in parallel with the control end of the silicon controlled rectifier, the input end of the silicon controlled rectifier is electrically connected with the live wire of the mains supply, the output end of the silicon controlled rectifier is electrically connected with the input end of the heating tube, and the output end of the heating tube is electrically connected with a zero line of the mains supply; the work judging module comprises a photoelectric coupler, wherein a light emitting element end of the photoelectric coupler is electrically connected with the mains supply, and a light receiving element end of the photoelectric coupler is electrically connected with a signal input end ZORE2 of the MCU. The electric heater control circuit solves the problem that the existing electric heater cannot be found by a user when the electric heater suddenly stops working, so that crops or animals are lost.
Description
Technical Field
The utility model relates to the technical field of heating equipment, in particular to an electric heater control circuit.
Background
The electric heater is an electric appliance which converts electric energy into heat energy, and the specific principle is that after the electric heating wire is electrified to generate heat, the quartz tube absorbs heat radiation and converts the heat radiation into far infrared radiation, so that the environment is heated.
In the practical use, the electric heater not only can heat people, but also can be used for warming crops and livestock and the like. In the use process, if the electric heater is suddenly powered off, topples over or fails to work due to failure, the electric heater cannot be found in time, and crops or animals are lost due to heating stop.
Disclosure of utility model
In order to overcome the defects in the prior art, the utility model provides an electric heater control circuit to solve the problems.
The technical scheme adopted for solving the technical problems is as follows: a control circuit of an electric heater comprises a voltage-reducing and stabilizing module, an MCU, a heating tube switch module and a work judging module;
The input end of the step-down voltage stabilizing module is electrically connected with the mains supply, and the output end of the step-down voltage stabilizing module is electrically connected with the power supply input end of the MCU;
the heating tube switch module comprises an NPN triode Q1, a silicon controlled rectifier TH1 and a heating tube, wherein the b pole of the NPN triode Q1 is electrically connected with a control output end HEAR of the MCU, the e pole of the NPN triode Q1 is grounded, the c pole of the NPN triode Q1 is electrically connected with a live wire of a mains supply after being connected with the control end of the silicon controlled rectifier TH1 in parallel, the input end of the silicon controlled rectifier TH1 is electrically connected with the live wire of the mains supply, the output end of the silicon controlled rectifier TH1 is electrically connected with the input end of the heating tube, and the output end of the heating tube is electrically connected with a zero line of the mains supply;
the work judging module comprises a photoelectric coupler U2, a light-emitting element end of the photoelectric coupler U2 is electrically connected with the mains supply, and a light-receiving element end of the photoelectric coupler U2 is electrically connected with a signal input end ZORE of the MCU.
It is worth noting that, the electric heater control circuit further includes a voltage input detection module, the voltage input detection module includes a diode D7 and an NPN triode Q2, an anode of the diode D7 is electrically connected with an input end of the buck voltage stabilizing module, a cathode of the diode D7 is electrically connected with a b pole of the NPN triode Q2, an e pole of the NPN triode Q2 is grounded, and a c pole of the NPN triode Q2 is electrically connected with an output end of the buck voltage stabilizing module and a signal input end ZORE of the MCU respectively.
Optionally, the electric heater control circuit further includes a temperature detection module, the temperature detection module includes a thermistor RT1, a pull-up resistor R4 and a filter capacitor C2, the thermistor RT1 is disposed on a shell of the electric heater, one end of the thermistor RT1 is electrically connected with one end of the pull-up resistor R4 and one end of the filter capacitor C2, the other end of the thermistor RT1 is connected with the other end of the filter capacitor C2 in parallel and then grounded, and the other end of the pull-up resistor R4 is electrically connected with an output end of the voltage-reducing and stabilizing module; one end of the filter capacitor is electrically connected with the signal input end NTC of the MCU.
Preferably, the buck voltage stabilizing module comprises a diode D2, a diode D3, a capacitor EC2, a capacitor EC3, an inductor L2 and a non-isolated buck voltage stabilizing chip U1, a zero line of mains supply is electrically connected with one end of the capacitor EC3 through the half-wave rectifying diode D2 and the half-wave rectifying diode D3 after being connected in series, the other end of the capacitor EC3 is electrically connected with a live wire of the mains supply, one end of the capacitor EC3 is electrically connected with one end of the capacitor EC2 through the inductor L2, the other end of the capacitor EC2 is electrically connected with the live wire of the mains supply, one end of the capacitor EC2 is also electrically connected with an input end of the non-isolated buck voltage stabilizing chip U1, and an output end of the non-isolated buck voltage stabilizing chip U1 is used as an output end of the buck voltage stabilizing module.
Specifically, the electric heater control circuit further comprises an alarm module, the alarm module comprises a buzzer BUZ and a current limiting resistor R7, one end of the buzzer BUZ is electrically connected with the output end of the voltage reducing and stabilizing module, and the other end of the buzzer BUZ is electrically connected with a control output port PWM2 of the MCU through the current limiting resistor R7.
It is worth noting that, the electric heater control circuit includes remote control signal receiving module, remote control signal receiving module includes infrared receiving head REC, filter capacitor C3, filter capacitor C4 and current-limiting resistor R6, the positive pole VCC of infrared receiving head REC is connected with filter capacitor C3's one end and current-limiting resistor R6's one end electricity respectively, current-limiting resistor R6's the other end is connected with step-down steady voltage module's output electricity, filter capacitor C3's the other end ground, infrared receiving head REC's negative pole GND ground, infrared receiving head REC's output OUT and MCU's signal input terminal INT electricity are connected, infrared receiving head REC's output OUT still with filter capacitor C4's one end electricity is connected, filter capacitor C4's the other end ground.
The utility model has the beneficial effects that: when the heating tube works, the current flowing through the input end of the buck voltage stabilizing module also enters the working judging module, the current is rectified through the diode D1, then flows through the resistor R12, the resistor R10, the resistor R13 and the resistor R6 and then flows through the light emitting element end of the photoelectric coupler U2, at the moment, the light receiving element end of the photoelectric coupler U2 generates a signal, and the signal flows through the resistor R9 to the signal input end ZORE of the MCU. The MCU determines whether or not a signal is input to the signal input end ZORE to determine whether or not the heating pipe is operating. When the MCU detects that the heating tube needs to be in a working state, but the signal input end ZORE is free of signal input, the MCU can control to give an alarm to remind a user of bad conditions, and the loss of crops or livestock caused by stopping heating is avoided.
Drawings
FIG. 1 is a circuit diagram of a buck voltage regulator module, a heating tube switch module, and a voltage input detection module in one embodiment of the utility model;
FIG. 2 is a circuit diagram of a buck regulator module according to an embodiment of the present utility model;
FIG. 3 is a circuit diagram of a heat pipe switch module according to an embodiment of the present utility model;
FIG. 4 is a circuit diagram of a voltage input detection module according to an embodiment of the present utility model;
FIG. 5 is a circuit diagram of a connector module in one embodiment of the utility model;
FIG. 6 is a circuit diagram of a tact switch module in an embodiment of the utility model;
FIG. 7 is a circuit diagram of a work judgment module according to an embodiment of the present utility model;
FIG. 8 is a circuit diagram of a light emitting diode display module according to an embodiment of the utility model;
FIG. 9 is a circuit diagram of an MCU in an embodiment of the utility model;
FIG. 10 is a circuit diagram of a temperature detection module in one embodiment of the utility model;
FIG. 11 is a circuit diagram of a connector module according to another embodiment of the present utility model;
FIG. 12 is a circuit diagram of an alarm module in one embodiment of the utility model;
fig. 13 is a circuit diagram of a remote control signal receiving module according to an embodiment of the present utility model.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present utility model, but is not intended to limit the present utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1-13, an electric heater control circuit comprises a step-down voltage stabilizing module, an MCU, a heating tube switch module and a work judging module;
The input end of the step-down voltage stabilizing module is electrically connected with the mains supply, and the output end of the step-down voltage stabilizing module is electrically connected with the power supply input end of the MCU; as shown in fig. 9, the MUC is of the type CMS79F113;
The heating tube switch module comprises an NPN triode Q1, a silicon controlled rectifier TH1 and a heating tube, wherein the b pole of the NPN triode Q1 is electrically connected with a control output end HEAR of the MCU, the e pole of the NPN triode Q1 is grounded, the c pole of the NPN triode Q1 is electrically connected with a live wire of a mains supply after being connected with the control end of the silicon controlled rectifier TH1 in parallel, the input end of the silicon controlled rectifier TH1 is electrically connected with the live wire of the mains supply, the output end of the silicon controlled rectifier TH1 is electrically connected with the input end of the heating tube, and the output end of the heating tube is electrically connected with a zero line of the mains supply; as shown in fig. 3, the control output end HEAR of the MCU outputs an instruction to control the on and off of the NPN triode through the resistor R26, so as to control the switch of the silicon controlled rectifier TH1 to switch the heating tube between on and off, wherein the resistor R7R and the resistor R7 are current limiting resistors;
The work judging module comprises a photoelectric coupler U2, a light-emitting element end of the photoelectric coupler U2 is electrically connected with the mains supply, and a light-receiving element end of the photoelectric coupler U2 is electrically connected with a signal input end ZORE of the MCU. Specifically, one end of the light emitting element end of the photoelectric coupler U2 is electrically connected with a live wire of a mains supply, the other end of the light emitting element end of the photoelectric coupler U2 is electrically connected with a zero wire of the mains supply, one end of the light receiving element end of the photoelectric coupler U2 is electrically connected with the signal input end ZORE of the MCU, and the other end of the light receiving element end of the photoelectric coupler U2 is grounded.
As shown in fig. 7, when the heating tube is in operation, the current flowing through the input end of the buck voltage stabilizing module also enters the operation judging module, the current is rectified by the diode D1, then flows through the resistor R12, the resistor R10, the resistor R13 and the resistor R6, and then flows through the light emitting element end of the photo coupler U2, at this time, the light receiving element end of the photo coupler U2 generates a signal, and flows through the resistor R9 to the signal input end ZORE of the MCU. The MCU determines whether or not a signal is input to the signal input end ZORE to determine whether or not the heating pipe is operating. When the MCU detects that the heating tube needs to be in a working state, but the signal input end ZORE is free of signal input, the MCU can control to give an alarm to remind a user of bad conditions, and the loss of crops or livestock caused by stopping heating is avoided.
It should be noted that, as shown in fig. 4, the electric heater control circuit further includes a voltage input detection module, where the voltage input detection module includes a diode D7 and an NPN triode Q2, an anode of the diode D7 is electrically connected with an input end of the buck voltage stabilizing module, a cathode of the diode D7 is electrically connected with a b pole of the NPN triode Q2, an e pole of the NPN triode Q2 is grounded, and a c pole of the NPN triode Q2 is electrically connected with an output end of the buck voltage stabilizing module and a signal input end ZORE of the MCU, respectively. After the commercial power is rectified by the diode D7, the current is divided by the resistor R2, the resistor R3 and the resistor R8, and a frequency signal is given to the base electrode of the NPN triode Q2, so that the collector electrode of the NPN triode Q2 outputs a high-low level signal, when the base electrode of the NPN triode Q2 receives a high level, the NPN triode Q2 is conducted, the collector electrode of the NPN triode Q2 is grounded, the collector electrode of the NPN triode Q2 outputs a low level, when the base electrode of the NPN triode Q2 receives a low level, the NPN triode Q2 is cut off, the collector electrode of the NPN triode Q2 outputs a high level, and the high-low level signal flows to the signal input end ZORE of the MCU through the resistor R5, so that whether voltage input exists or not is judged. When the power grid is suddenly powered off, the signal input end ZORE of the MCU detects no voltage input, and the MCU controls the buzzer electric module to send out alarm prompt sound, so that crop or livestock loss caused by stopping heating is avoided.
Preferably, as shown in fig. 10, the electric heater control circuit further includes a temperature detection module, where the temperature detection module includes a thermistor RT1, a pull-up resistor R4 and a filter capacitor C2, where the thermistor RT1 is disposed on a shell of the electric heater, one end of the thermistor RT1 is electrically connected with one end of the pull-up resistor R4 and one end of the filter capacitor C2, and the other end of the thermistor RT1 and the other end of the filter capacitor C2 are connected in parallel and then grounded, and the other end of the pull-up resistor R4 is electrically connected with the output end of the voltage-reducing and stabilizing module; one end of the filter capacitor is electrically connected with the signal input end NTC of the MCU. The resistance value of the thermistor RT1 will change with the change of temperature, so the signal inputted to the signal input end NTC of the MCU through the resistor R5 will change with the change of the thermistor RT1, and the MCU can determine whether the ambient temperature exceeds the standard. When the environment temperature is detected to be higher than or lower than the set temperature, the MCU controls the light-emitting diode display module to display an alarm code, and the MCU controls the buzzer module to alarm, so that a user is reminded of bad conditions, and the loss of crops or livestock caused by stopping heating is avoided.
Preferably, as shown in fig. 2, the buck voltage stabilizing module includes a diode D2, a diode D3, a capacitor EC2, a capacitor EC3, an inductance L2 and a non-isolated buck voltage stabilizing chip U1, a zero line of the mains supply is electrically connected with one end of the capacitor EC3 through the half-wave rectifying diode D2 and the half-wave rectifying diode D3 after being connected in series, the other end of the capacitor EC3 is electrically connected with a live wire of the mains supply, one end of the capacitor EC3 is electrically connected with one end of the capacitor EC2 through the inductance L2, the other end of the capacitor EC2 is electrically connected with the live wire of the mains supply, one end of the capacitor EC2 is electrically connected with an input end of the non-isolated buck voltage stabilizing chip U1, and an output end of the non-isolated buck voltage stabilizing chip U1 is used as an output end of the buck voltage stabilizing module. After passing through a FUSE tube FUSE1, a piezoresistor ZNR1 and a safety capacitor XC1, the commercial power is changed into high-voltage direct current through a half-wave rectifying diode D2 and a half-wave rectifying diode D3, and then is input into a non-isolated voltage-reducing and stabilizing chip U1 through a filter circuit consisting of a capacitor EC2, a capacitor EC3 and an inductor L2, the model of the non-isolated voltage-reducing and stabilizing chip U1 is KP3114SGA, and the capacitor C9, a resistor R21, a resistor R22, a diode D5, a diode D4, an inductor L1, a capacitor EC5, a capacitor C8 and a resistor R23 form voltage-reducing and stabilizing output, so that the input high-voltage direct current is converted into stable +5V direct current, and power is supplied to a control circuit. The capacitor EC2 and the capacitor EC3 are used for storing electric energy, so that the power supply circuit can provide electric energy for the MCU to work within about 3-4 seconds after the alternating current is suddenly not input.
Specifically, as shown in fig. 12, the electric heater control circuit further includes an alarm module, the alarm module includes a buzzer BUZ and a current limiting resistor R7, one end of the buzzer BUZ is electrically connected with the output end of the voltage reducing and stabilizing module, and the other end of the buzzer BUZ is electrically connected with the control output port PWM2 of the MCU through the current limiting resistor R7. When the buzzer is required to be reminded, the MCU sends out a signal through the control output port PWM2 of the MCU to make the buzzer BUZ sound.
It should be noted that, as shown in fig. 13, the electric heater control circuit includes a remote control signal receiving module, where the remote control signal receiving module includes an infrared receiving head REC, a filter capacitor C3, a filter capacitor C4 and a current limiting resistor R6, where an anode VCC of the infrared receiving head REC is electrically connected to one end of the filter capacitor C3 and one end of the current limiting resistor R6, another end of the current limiting resistor R6 is electrically connected to an output end of the buck voltage stabilizing module, another end of the filter capacitor C3 is grounded, a cathode GND of the infrared receiving head REC is grounded, an output end OUT of the infrared receiving head REC is electrically connected to a signal input end INT of the MCU, an output end OUT of the infrared receiving head REC is also electrically connected to one end of the filter capacitor C4, and another end of the filter capacitor C4 is grounded. The remote control signal receiving module is used for receiving the remote control signal to change the working state of the electric heater. After the infrared receiving head REC receives the remote control signal, the remote control signal is transmitted to the signal input end INT of the MCU, and then the MCU changes the working state of the electric heater according to the instruction.
As shown in fig. 8, the light emitting diode display module is configured to light different LED lamps according to a user instruction to represent a current working state of the electric heater, wherein the LEDs 1 to 14 form a matrix, the cathodes of the LEDs 1, 2 and 3 are electrically connected with the output end COM1 of the MCU, the cathodes of the LEDs 10, 4, 11, 5, 12 and 6 are electrically connected with the output end COM2 of the MCU, and the cathodes of the LEDs 13, 7, 14, 8, 15 and 9 are electrically connected with the output end COM3 of the MCU, and the anodes of all the light emitting diodes are electrically connected with the MCU through current limiting resistors.
As shown in fig. 6, the tact switch module includes a tact switch K1, one end of the tact switch K1 is grounded, the other end of the tact switch K1 is connected to a signal input KEY of the MCU, and when the MCU detects that the tact switch K1 is pressed, the electric heater is controlled to operate or be turned off.
The connector module shown in fig. 5 and 11 uses a connection wire to connect the power panel and the control panel. In fig. 11, the capacitor C6 and the capacitor EC11 are filter capacitors, the resistor R8 and the resistor R10 are pull-up resistors, the resistor R9 and the resistor R11 are limiting resistors, the capacitor C7 and the capacitor C8 are filter capacitors, and the CN1 is a socket terminal.
The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model, and yet fall within the scope of the utility model.
Claims (6)
1. An electric heater control circuit, characterized in that: the system comprises a voltage-reducing and voltage-stabilizing module, an MCU, a heating tube switch module and a work judging module;
The input end of the step-down voltage stabilizing module is electrically connected with the mains supply, and the output end of the step-down voltage stabilizing module is electrically connected with the power supply input end of the MCU;
the heating tube switch module comprises an NPN triode Q1, a silicon controlled rectifier TH1 and a heating tube, wherein the b pole of the NPN triode Q1 is electrically connected with a control output end HEAR of the MCU, the e pole of the NPN triode Q1 is grounded, the c pole of the NPN triode Q1 is electrically connected with a live wire of a mains supply after being connected with the control end of the silicon controlled rectifier TH1 in parallel, the input end of the silicon controlled rectifier TH1 is electrically connected with the live wire of the mains supply, the output end of the silicon controlled rectifier TH1 is electrically connected with the input end of the heating tube, and the output end of the heating tube is electrically connected with a zero line of the mains supply;
the work judging module comprises a photoelectric coupler U2, a light-emitting element end of the photoelectric coupler U2 is electrically connected with the mains supply, and a light-receiving element end of the photoelectric coupler U2 is electrically connected with a signal input end ZORE of the MCU.
2. An electric heater control circuit as claimed in claim 1, wherein: the electric heater control circuit further comprises a voltage input detection module, the voltage input detection module comprises a diode D7 and an NPN triode Q2, the anode of the diode D7 is electrically connected with the input end of the voltage reduction and stabilization module, the cathode of the diode D7 is electrically connected with the b pole of the NPN triode Q2, the e pole of the NPN triode Q2 is grounded, and the c pole of the NPN triode Q2 is electrically connected with the output end of the voltage reduction and stabilization module and the signal input end ZORE of the MCU respectively.
3. An electric heater control circuit as claimed in claim 2, wherein: the electric heater control circuit further comprises a temperature detection module, the temperature detection module comprises a thermistor RT1, a pull-up resistor R4 and a filter capacitor C2, the thermistor RT1 is arranged on a shell of the electric heater, one end of the thermistor RT1 is respectively and electrically connected with one end of the pull-up resistor R4 and one end of the filter capacitor C2, the other end of the thermistor RT1 is connected with the other end of the filter capacitor C2 in parallel and then grounded, and the other end of the pull-up resistor R4 is electrically connected with the output end of the voltage-reducing and voltage-stabilizing module; one end of the filter capacitor is electrically connected with the signal input end NTC of the MCU.
4. An electric heater control circuit as claimed in claim 1, wherein: the voltage-reducing and stabilizing module comprises a diode D2, a diode D3, a capacitor EC2, a capacitor EC3, an inductor L2 and a non-isolated voltage-reducing and stabilizing chip U1, wherein a zero line of mains supply is electrically connected with one end of the capacitor EC3 through the half-wave rectifying diode D2 and the half-wave rectifying diode D3 which are connected in series, the other end of the capacitor EC3 is electrically connected with a live wire of the mains supply, one end of the capacitor EC3 is electrically connected with one end of the capacitor EC2 through the inductor L2, the other end of the capacitor EC2 is electrically connected with the live wire of the mains supply, one end of the capacitor EC2 is also electrically connected with the input end of the non-isolated voltage-reducing and stabilizing chip U1, and the output end of the non-isolated voltage-reducing and stabilizing chip U1 is used as the output end of the voltage-reducing and stabilizing module.
5. An electric heater control circuit as claimed in claim 1, wherein: the electric heater control circuit further comprises an alarm module, the alarm module comprises a buzzer BUZ and a current limiting resistor R7, one end of the buzzer BUZ is electrically connected with the output end of the voltage reducing and stabilizing module, and the other end of the buzzer BUZ is electrically connected with a control output port PWM2 of the MCU through the current limiting resistor R7.
6. An electric heater control circuit as claimed in claim 1, wherein: the electric heater control circuit comprises a remote control signal receiving module, the remote control signal receiving module comprises an infrared receiving head REC, a filter capacitor C3, a filter capacitor C4 and a current-limiting resistor R6, wherein the positive pole VCC of the infrared receiving head REC is respectively and electrically connected with one end of the filter capacitor C3 and one end of the current-limiting resistor R6, the other end of the current-limiting resistor R6 is electrically connected with the output end of the voltage-reducing and voltage-stabilizing module, the other end of the filter capacitor C3 is grounded, the negative pole GND of the infrared receiving head REC is grounded, the output end OUT of the infrared receiving head REC is electrically connected with the signal input end INT of the MCU, the output end OUT of the infrared receiving head REC is also electrically connected with one end of the filter capacitor C4, and the other end of the filter capacitor C4 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322375477.5U CN220911554U (en) | 2023-09-01 | 2023-09-01 | Electric heater control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322375477.5U CN220911554U (en) | 2023-09-01 | 2023-09-01 | Electric heater control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220911554U true CN220911554U (en) | 2024-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322375477.5U Active CN220911554U (en) | 2023-09-01 | 2023-09-01 | Electric heater control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220911554U (en) |
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2023
- 2023-09-01 CN CN202322375477.5U patent/CN220911554U/en active Active
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