CN211860613U - Electronic light controller - Google Patents
Electronic light controller Download PDFInfo
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- CN211860613U CN211860613U CN202020010463.7U CN202020010463U CN211860613U CN 211860613 U CN211860613 U CN 211860613U CN 202020010463 U CN202020010463 U CN 202020010463U CN 211860613 U CN211860613 U CN 211860613U
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Abstract
The utility model provides an electronic type light controller, wherein, include: a load; the control switch is connected with the load and used for controlling the on-off of the load; and the light control circuit is connected with the control switch and is used for controlling the on-off of the control switch according to the light signal. The beneficial effects of the utility model reside in that: the light signals with different sizes are obtained according to the intensity of illumination, and the on-off of the control switch is controlled according to the light signals so as to control the on-off of the load, so that the manufacturing cost is reduced, the process procedures are reduced, and the production efficiency is improved.
Description
Technical Field
The utility model relates to an electronic circuit technical field especially relates to an electronic type light controller.
Background
The light controller is an energy-saving electronic device which controls the on/off of a circuit by utilizing the sensitive response characteristic of a photosensitive component to the light intensity, and is mostly used as an automatic power supply control device of street lamps, community illuminating lamps, advertising lamp boxes and the like which need night illumination work.
The light controllers used in the world are mainly of three types, namely thermal bimetallic strip type, electromagnetic type and full electronic type. For the traditional mechanical thermal bimetallic strip, the principle that the deformation of the bimetallic strip is increased along with the increase of the temperature and the deformation is decreased along with the decrease of the temperature at different temperatures is mainly utilized to design, so that the working reliability is not high, the working stability is not good, the working life is not long, the false triggering is easy to occur, the normal working condition of an electrical lighting system is influenced, the manufacturing process is complex, the production efficiency is low, and the cost is high.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, an electronic light controller with simple process and low cost is provided.
The specific technical scheme is as follows:
an electronic light controller, comprising:
a load;
the control switch is connected with the load and used for controlling the on-off of the load;
and the light control circuit is connected with the control switch and is used for controlling the on-off of the control switch according to the light signal.
Preferably, the electronic light controller further includes a switching circuit, connected to the control switch and the light control circuit, respectively, for converting an ac voltage into a first dc voltage and a second dc voltage, inputting the first dc voltage into the control switch, supplying power to the control switch, and inputting both the first dc voltage and the second dc voltage into the light control circuit.
Preferably, the electronic light controller, wherein the light control circuit includes:
a signal conversion circuit for converting the received optical signal into an electrical signal;
the sampling signal circuit is used for converting the alternating voltage into a square wave signal and providing a sampling signal of a zero position of the alternating voltage;
and the driving circuit is respectively connected with the signal conversion circuit, the sampling signal circuit and the switching circuit and used for outputting a switching signal according to the electric signal, the sampling signal and the first direct current voltage and controlling the on-off of the control switch through the switching signal.
Preferably, the electronic light controller, wherein the switching circuit includes a rectifying circuit, and the rectifying circuit includes:
the rectifier bridge is connected to a zero line through a resistance-capacitance voltage reduction circuit, the rectifier bridge is connected to a live line through a first resistor, and the output end of the rectifier bridge is connected with the control switch;
the resistance-capacitance voltage reduction circuit comprises a second resistor and a first capacitor which are connected in parallel;
and the piezoresistor is connected between the zero line and the live line.
Preferably, the electronic light controller, wherein the switching circuit includes a first conversion circuit, the first conversion circuit is disposed between the rectifying circuit and the control switch, and is configured to convert the dc voltage output by the rectifying circuit into a first dc voltage, and the first conversion circuit includes:
the anode of the first voltage stabilizing diode is connected to the grounding end, and the cathode of the first voltage stabilizing diode is connected with the output end of the rectifier bridge;
the second capacitor is connected in parallel with the first voltage stabilizing diode;
the switching circuit further includes a second conversion circuit provided between the rectifier circuit and the signal conversion circuit for converting the direct-current voltage output from the rectifier circuit into a second direct-current voltage, the second conversion circuit including:
the anode of the second voltage stabilizing diode is connected to the grounding end, and the cathode of the second voltage stabilizing diode is connected to the output end of the second conversion circuit;
the third capacitor is connected in parallel with the second voltage stabilizing diode;
the fourth capacitor is connected with the second voltage stabilizing diode in parallel;
and the third resistor is connected between the output end of the rectifier bridge and the output end of the second conversion circuit.
Preferably, the electronic light controller, wherein the signal conversion circuit includes a phototransistor, an emitter of the phototransistor is connected to the ground terminal through a fourth resistor, the emitter of the phototransistor is connected to the output terminal of the signal conversion circuit, and a collector of the phototransistor is connected to the second output terminal of the switching circuit.
Preferably, the electronic light controller, wherein the sampling signal circuit includes a control signal circuit, the signal control circuit is configured to output a control signal according to the ac voltage, and the control signal circuit includes:
the anode of the first diode is connected to the second resistor through a fifth resistor, and the cathode of the first diode is connected to the output end of the control signal circuit through a sixth resistor;
and the seventh resistor is connected between the cathode of the first diode and the ground terminal.
Preferably, the electronic light controller, wherein the sampling signal circuit includes a zero signal circuit, the zero signal circuit is respectively connected to the switching circuit and the control signal circuit, and is configured to output a square wave signal according to the second dc voltage and the control signal, and the zero signal circuit includes:
the base electrode of the first triode is connected with the output end of the control signal circuit, the emitting electrode of the first triode is connected to the grounding end, the collector electrode of the first triode is connected to the second output end of the switching circuit through the eighth resistor to receive the second direct current voltage, and the collector electrode of the first triode is connected to the input end of the driving circuit;
and the fifth capacitor is connected between the input end of the driving circuit and the ground end.
Preferably, the electronic light controller, wherein the control switch includes a relay, the relay is provided with a first trigger port, a second trigger port, a third trigger port and a fourth trigger port, the first trigger port is connected to the zero line, the second trigger port is connected to a load line, a switch key is provided between the first trigger port and the second trigger port, and the third trigger port is connected to the first output end of the switching circuit to receive the first dc voltage;
and the second diode is connected between the third trigger port and the fourth trigger port.
Preferably, the electronic light controller, wherein the driving circuit includes:
the input end of the control chip receives the electric signal, the sampling signal and the first direct-current voltage, and the output end of the control chip outputs a switching signal;
a base electrode of the second triode is connected to the output end of the control chip through a ninth resistor, an emitting electrode of the second triode is connected to the grounding end, and a collecting electrode of the second triode is connected to the fourth trigger port;
and the tenth resistor is connected between the base electrode of the second triode and the grounding end.
The technical scheme has the following advantages or beneficial effects:
the light signals with different sizes are obtained according to the intensity of illumination, and the on-off of the control switch is controlled according to the light signals so as to control the on-off of the load, so that the manufacturing cost is reduced, the process procedures are reduced, and the production efficiency is improved.
Drawings
Embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings. The drawings are, however, to be regarded as illustrative and explanatory only and are not restrictive of the scope of the invention.
Fig. 1 is a circuit diagram of a light control circuit of an electronic light controller according to an embodiment of the present invention;
FIG. 2 is a circuit diagram of a voltage divider circuit according to an embodiment of the electronic light controller of the present invention;
FIG. 3 is a diagram of a printed circuit board according to an embodiment of the electronic light controller of the present invention;
FIG. 4 is a waveform diagram of a PWM signal according to an embodiment of the present invention;
FIG. 5 is a waveform diagram of a sampling signal according to an embodiment of the present invention.
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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
The utility model discloses an electronic type light controller, as shown in figure 1, include:
a load;
the control switch is connected with the load and used for controlling the on-off of the load;
and the light control circuit is connected with the control switch and is used for controlling the on-off of the control switch according to the light signal.
In the above embodiment, the light control circuit obtains light signals of different sizes according to the intensity of light, and controls the on/off of the control switch according to the light signals to control the on/off of the load.
Further, in the above embodiment, the switching circuit is further included, and is respectively connected to the control switch and the light control circuit, and is configured to convert the ac voltage into a first dc voltage and a second dc voltage, input the first dc voltage into the control switch, supply power to the control switch, and input both the first dc voltage and the second dc voltage into the light control circuit.
Further, in the above-described embodiment, as shown in fig. 1, the light control circuit includes:
a signal conversion circuit for converting the received optical signal into an electrical signal;
the sampling signal circuit is used for converting the alternating voltage into a square wave signal and providing a sampling signal of a zero position of the alternating voltage;
and the driving circuit is respectively connected with the signal conversion circuit, the sampling signal circuit and the switching circuit and used for outputting a switching signal according to the electric signal, the sampling signal and the first direct current voltage and controlling the on-off of the control switch through the switching signal.
Further, in the above-described embodiment, the switching circuit includes a rectifying circuit, which includes, as shown in fig. 1:
the rectifier bridge D5, rectifier bridge D5 is connected to the zero line L1 through a resistance-capacitance step-down circuit, the rectifier bridge D5 is connected to the live line L2 through a first resistor R1, and the output end of the rectifier bridge D5 is connected with a control switch;
the resistance-capacitance voltage reduction circuit comprises a second resistor R2 and a first capacitor C1 which are connected in parallel;
and the piezoresistor Mov is connected between the zero line L1 and the live line L2.
In the above embodiment, the ac voltage is stepped down by the above-described resistor-capacitor step-down circuit and the first resistor R1, and then the ac voltage is converted into the dc voltage by the rectifier bridge D5.
Further, as a preferred embodiment, a first end of the rectifier bridge D5 may be connected to a ground GND, a second end of the rectifier bridge D5 may be connected to the neutral line L1 through a second resistor R2R1, a third end of the rectifier bridge D5 may be connected to an output end of the rectifier bridge D5, an output end of the rectifier bridge D5 may be connected to a control switch, a fourth end of the rectifier bridge D5 may be connected to the live line L2 through a first resistor R1, and a first capacitor C1 and a second resistor R2 are connected in parallel to form a resistor-capacitor voltage reduction circuit.
Further, in the above-mentioned embodiment, the switching circuit includes a first conversion circuit, which is disposed between the rectifying circuit and the control switch, for converting the dc voltage output by the rectifying circuit into the first dc voltage, as shown in fig. 1, and the first conversion circuit includes:
the anode of the first zener diode D1 is connected to the ground GND, and the cathode of the first zener diode D1 is connected to the output end of the rectifier bridge D5;
a second capacitor C2 connected in parallel with the first zener diode D1;
in the above embodiment, after the current is filtered by the first zener diode D1 and the second capacitor C2, the dc voltage output by the rectifying circuit is converted into the first stable dc voltage, and then the first dc voltage is input into the control switch to supply power to the control switch.
Further, in a preferred embodiment, the voltage required for controlling the switch is a dc voltage of 24V, and therefore the voltage of the first dc voltage may be 24V or may be set according to the requirement for controlling the switch.
Further, in the above-described embodiment, the switching circuit further includes a second conversion circuit provided between the rectifier circuit and the signal conversion circuit for converting the dc voltage output from the rectifier circuit into a second dc voltage, as shown in fig. 1, the second conversion circuit includes:
a second zener diode D2, wherein the anode of the second zener diode D2 is connected to the ground GND, and the cathode of the second zener diode D2 is connected to the output end of the second conversion circuit;
a third capacitor C3 connected in parallel with the second zener diode D2;
a fourth capacitor C4 connected in parallel with the second zener diode D2;
and a third resistor R3 connected between the output terminal of the rectifier bridge D5 and the output terminal of the second conversion circuit.
In the above-described embodiment, the dc voltage output from the rectifying circuit is converted into the second dc voltage by the second converting circuit, wherein the voltage of the second dc voltage is 5.1V.
Further, in the above embodiment, as shown in fig. 1, the signal conversion circuit includes a phototransistor Q3, an emitter of the phototransistor Q3 is connected to the ground GND through a fourth resistor R4, an emitter of the phototransistor Q3 is connected to the output terminal of the signal conversion circuit, and a collector of the phototransistor Q3 is connected to the second output terminal of the switching circuit.
In the above embodiment, the phototriode Q3 is an N-channel triode for photoelectric conversion and amplification of an electrical signal, and has the advantages of low manufacturing cost, simple process, and easy production.
Further, as a preferred embodiment, the phototriode Q3 can be disposed on different mounting positions of the PCB board, thereby accommodating products of different mounting forms.
For example, as shown in fig. 3, the phototransistor Q3 may be disposed at a first mounting position Q3-1 of the PCB or at a second mounting position Q3-2 of the PCB, and the emitters of the phototransistor Q3 disposed at the first mounting position Q3-1 and the phototransistor Q3 disposed at the second mounting position Q3-2 are both connected to the ground GND through a fourth resistor R4, and the emitters are both connected to the output terminal of the signal conversion circuit, and the collector is connected to the second output terminal of the switching circuit;
therefore, the user can conveniently adjust the installation position of the phototriode Q3 according to different light controllers, thereby adapting to products with different installation forms.
Further, in the above embodiment, the sampling signal circuit includes a control signal circuit, the signal control circuit is configured to output a control signal according to the ac voltage, and as shown in fig. 1, the control signal circuit includes:
a first diode D3, wherein the anode of the first diode D3 is connected to the second resistor R2 through a fifth resistor R5, and the cathode of the first diode D3 is connected to the output end of the control signal circuit through a sixth resistor R6;
the seventh resistor R7 is connected between the cathode of the first diode D3 and the ground GND.
In the above embodiment, the ac voltage is converted into the dc voltage after passing through the fifth resistor R5 and the first diode D3 connected in series, and the dc voltage is divided by the sixth resistor R6 and the seventh resistor R7 to output a divided voltage, and the control signal in the form of a square wave is obtained according to the divided voltage.
Further, in the above embodiment, the sampling signal circuit includes a zero signal circuit, and the zero signal circuit is respectively connected to the switching circuit and the control signal circuit, and is configured to output a square wave signal according to the second dc voltage and the control signal, as shown in fig. 1, the zero signal circuit includes:
a first triode Q1, wherein the base of the first triode Q1 is connected to the output end of the control signal circuit, the emitter of the first triode Q1 is connected to the ground GND, the collector of the first triode Q1 is connected to the second output end of the switching circuit through an eighth resistor R8 to receive the second dc voltage, and the collector of the first triode Q1 is connected to the input end of the driving circuit;
the fifth capacitor C5 is connected between the input terminal of the driving circuit and the ground GND.
In the above embodiment, the base of the first transistor Q1 is connected to the output terminal of the control signal circuit, so that the control signal controls the on/off of the first transistor Q1;
the second output end of the switching circuit outputs a second direct current voltage, and the second direct current voltage is subjected to current limiting of an eighth resistor R8 and filtering of a fifth capacitor C5, and a square wave signal is provided for the driving circuit according to a control signal of the control signal circuit.
The frequency of the square wave signal is 50Hz, and the period is 20 ms.
In the above embodiment, the first transistor Q1 is an NPN transistor.
Further, in the above embodiment, as shown in fig. 1, the control switch includes a relay Q4, the relay Q4 is provided with a first trigger port, a second trigger port, a third trigger port and a fourth trigger port, the first trigger port is connected to the zero line L1, the second trigger port is connected to the load line L3, a switch key K1 is provided between the first trigger port and the second trigger port, and the third trigger port is connected to the first output end of the switching circuit to receive the first direct current voltage;
and the anode of the second diode D4, the anode of the second diode D4 are connected with the fourth trigger port, and the cathode of the second diode D4 is connected with the third trigger port.
In the above embodiment, the second diode D4 disposed between the third trigger port and the fourth trigger port of the relay Q4 may function as a voltage stabilizing protection function of the relay Q4, absorb the counter-electromotive force generated when the coil of the relay Q4 operates, contribute to a smooth operation state conversion function, and protect the relay Q4, so that the relay Q4 operates stably to supply power to the load stably.
Further, in the above-described embodiment, as shown in fig. 1, the drive circuit includes:
the input end of the control chip U1 receives the electric signal, the sampling signal and the first direct current voltage, and the output end of the control chip U1 outputs a switching signal;
a base of the second triode Q2 is connected to an output end of the control chip U1 through a ninth resistor R9, an emitter of the second triode Q2 is connected to a ground GND, and a collector of the second triode Q2 is connected to a fourth trigger port;
the tenth resistor R10 is connected between the base of the second transistor Q2 and the ground GND.
Further, as a preferred embodiment, the first pin of the control chip U1 is connected to the output terminal of the second conversion circuit to receive the second dc voltage output by the second conversion circuit;
a second pin of the control chip U1 is an output end of the control chip U1 to output a switching signal;
a third pin of the control chip U1 is connected to the output terminal of the signal conversion circuit to receive the electrical signal output by the signal conversion circuit;
a fourth pin of the control chip U1 is connected to the output terminal of the zero signal circuit to receive the zero sampling signal output by the zero signal circuit;
the thirteenth resistor R13 is connected to the front of the fifth pin of the control chip U1.
The seventh pin of the control chip U1 is connected to the output terminal of the first conversion circuit to receive the first dc voltage output by the first conversion circuit.
In the above preferred embodiment, the first pin is a VDD pin, and is configured to receive the second dc voltage output by the second conversion circuit, and supply power to the control chip U1 through the second dc voltage;
the second pin is a pin GP5, and is used for outputting a switching signal and providing a base voltage for the first triode Q1;
the switching signal may be a PWM signal, and a waveform diagram of the PWM signal is shown in fig. 4;
the third pin is a pin GP4, and is connected to a DAT (DAT is equivalent to the fourth resistor R4) for collecting a voltage across the fourth resistor R4, when the phototransistor Q3 is turned on, the voltage collected by the pin GP4 is at a high level, and when the phototransistor Q3 is turned off, the voltage collected by the pin GP4 is at a low level;
the fourth pin is a pin GP3, and is connected to the output terminal of the zero signal circuit (the output terminal of the zero signal circuit is the electrical node GP4) to receive the zero sampling signal output by the zero signal circuit, and the waveform diagram of the sampling signal is shown in fig. 5;
the fifth pin is a GP2 pin, is connected with the VPP and is used for programming;
the sixth pin is a GP1 pin, is connected with CLK and is used for programming;
the seventh pin is a pin GP0, and is connected to an output terminal of the first converting circuit (the output terminal of the first converting circuit is the electrical node GP7) to receive the first dc voltage output by the first converting circuit, when the first dc voltage is lower than the preset voltage, the control chip U1 outputs a low level, and when the first dc voltage is higher than the preset voltage, the control chip U1 outputs a high level;
the preset voltage may be 13V.
In the above embodiment, the second transistor Q2 is an NPN transistor.
Further, as a preferred embodiment, the voltage divider circuit is further included, the voltage divider circuit is connected between the driving circuit and the switching circuit, and the voltage divider circuit is configured to convert a voltage input to the driving circuit into a first direct current voltage;
as shown in fig. 2, the voltage dividing circuit includes:
an eleventh resistor R11 connected between the first output terminal of the switching circuit and the input terminal of the driving circuit;
a twelfth resistor R12 connected between the input terminal of the driving circuit and the ground terminal GND;
and a sixth capacitor C6 connected in parallel with the twelfth resistor R12.
In the above embodiment, when the voltage input to the driving circuit by the switching circuit does not meet the requirement of the driving circuit, that is, the voltage input to the driving circuit by the switching circuit is not the first direct-current voltage, the voltage dividing circuit converts the voltage input to the driving circuit into the first direct-current voltage.
The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.
Claims (10)
1. An electronic light controller, comprising:
a load;
the control switch is connected with the load and used for controlling the on-off of the load;
and the light control circuit is connected with the control switch and is used for controlling the on-off of the control switch according to a light signal.
2. The electronic light controller of claim 1, further comprising a switching circuit connected to the control switch and the light control circuit, respectively, for converting an ac voltage into a first dc voltage and a second dc voltage, inputting the first dc voltage into the control switch, powering the control switch, and inputting both the first dc voltage and the second dc voltage into the light control circuit.
3. The electronic light controller of claim 2, wherein the light control circuit comprises:
the signal conversion circuit is used for converting the received optical signal into an electric signal;
the sampling signal circuit is used for converting the alternating voltage into a square wave signal and providing a sampling signal of a zero position of the alternating voltage;
and the driving circuit is respectively connected with the signal conversion circuit, the sampling signal circuit and the switching circuit, and is used for outputting a switching signal according to the electric signal, the sampling signal and the first direct-current voltage and controlling the on-off of the control switch through the switching signal.
4. The electronic light controller of claim 3, wherein the switching circuit comprises a rectifying circuit comprising:
the rectifier bridge is connected to a zero line through a resistance-capacitance voltage reduction circuit, the rectifier bridge is connected to a live line through a first resistor, and the output end of the rectifier bridge is connected with the control switch;
the resistance-capacitance voltage reduction circuit comprises a second resistor and a first capacitor which are connected in parallel;
and the piezoresistor is connected between the zero line and the live line.
5. The electronic light controller of claim 4, wherein the switching circuit comprises a first conversion circuit disposed between the rectifying circuit and the control switch for converting the dc voltage output by the rectifying circuit into the first dc voltage, the first conversion circuit comprising:
the anode of the first voltage stabilizing diode is connected to the ground terminal, and the cathode of the first voltage stabilizing diode is connected with the output end of the rectifier bridge;
the second capacitor is connected with the first voltage stabilizing diode in parallel;
the switching circuit further includes a second conversion circuit, which is disposed between the rectifier circuit and the signal conversion circuit, and is configured to convert the dc voltage output by the rectifier circuit into the second dc voltage, where the second conversion circuit includes:
the anode of the second voltage stabilizing diode is connected to the ground terminal, and the cathode of the second voltage stabilizing diode is connected to the output end of the second conversion circuit;
the third capacitor is connected with the second voltage stabilizing diode in parallel;
the fourth capacitor is connected with the second voltage stabilizing diode in parallel;
and the third resistor is connected between the output end of the rectifier bridge and the output end of the second conversion circuit.
6. The electronic light controller of claim 3, wherein the signal conversion circuit comprises a phototransistor, an emitter of the phototransistor is connected to ground through a fourth resistor, an emitter of the phototransistor is connected to the output terminal of the signal conversion circuit, and a collector of the phototransistor is connected to the second output terminal of the switching circuit.
7. The electronic light controller of claim 4, wherein the sampling signal circuit comprises a control signal circuit for outputting a control signal according to the ac voltage, the control signal circuit comprising:
the anode of the first diode is connected to the second resistor through a fifth resistor, and the cathode of the first diode is connected to the output end of the control signal circuit through a sixth resistor;
and the seventh resistor is connected between the cathode of the first diode and the ground terminal.
8. The electronic light controller of claim 7, wherein the sampling signal circuit comprises a zero signal circuit, the zero signal circuit is respectively connected to the switching circuit and the control signal circuit, and is configured to output the square wave signal according to the second dc voltage and the control signal, and the zero signal circuit comprises:
a base electrode of the first triode is connected with the output end of the control signal circuit, an emitting electrode of the first triode is connected to a ground end, a collector electrode of the first triode is connected to the second output end of the switching circuit through an eighth resistor to receive the second direct current voltage, and the collector electrode of the first triode is connected to the input end of the driving circuit;
and the fifth capacitor is connected between the input end of the driving circuit and the grounding end.
9. The electronic light controller of claim 5, wherein the control switch comprises a relay, the relay is provided with a first trigger port, a second trigger port, a third trigger port and a fourth trigger port, the first trigger port is connected to the zero line, the second trigger port is connected to a load line, a switch key is arranged between the first trigger port and the second trigger port, and the third trigger port is connected to the first output end of the switching circuit to receive the first direct current voltage;
a second diode connected between the third trigger port and the fourth trigger port.
10. The electronic light controller of claim 9, wherein the drive circuit comprises:
the input end of the control chip receives the electric signal, the sampling signal and the first direct-current voltage, and the output end of the control chip outputs the switching signal;
a base electrode of the second triode is connected to the output end of the control chip through a ninth resistor, an emitting electrode of the second triode is connected to the ground terminal, and a collector electrode of the second triode is connected to the fourth trigger port;
and the tenth resistor is connected between the base electrode of the second triode and the grounding end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020010463.7U CN211860613U (en) | 2020-01-03 | 2020-01-03 | Electronic light controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020010463.7U CN211860613U (en) | 2020-01-03 | 2020-01-03 | Electronic light controller |
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| CN211860613U true CN211860613U (en) | 2020-11-03 |
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| CN202020010463.7U Active CN211860613U (en) | 2020-01-03 | 2020-01-03 | Electronic light controller |
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