CN211656448U - Voltage protection circuit for solar photovoltaic equipment - Google Patents
Voltage protection circuit for solar photovoltaic equipment Download PDFInfo
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- CN211656448U CN211656448U CN202020466591.2U CN202020466591U CN211656448U CN 211656448 U CN211656448 U CN 211656448U CN 202020466591 U CN202020466591 U CN 202020466591U CN 211656448 U CN211656448 U CN 211656448U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model relates to a voltage protection circuit for solar photovoltaic equipment, belonging to the field of solar photovoltaic equipment; a voltage protection circuit for a solar photovoltaic device comprising: the device comprises a voltage monitoring module, a voltage detection module and a temperature control detection module; the voltage monitoring module monitors the voltage of the solar photovoltaic equipment during working, the LED lamp displays green when the voltage is normal, and the LED lamp displays red when the voltage is too high or too low to remind workers; the voltage detection module detects and calculates the voltage magnitude and amplifies and outputs a voltage signal; when the voltage of the solar photovoltaic equipment is overhigh, the temperature inside the circuit can be increased by the temperature control detection module, so that the temperature can be detected and controlled, and the solar photovoltaic equipment can be better protected from working; the utility model discloses a when carrying out photoelectric conversion to solar photovoltaic equipment, protect the monitoring to the voltage of input battery to better protective apparatus.
Description
Technical Field
The utility model relates to a voltage protection circuit for solar photovoltaic equipment belongs to the solar photovoltaic equipment field.
Background
With the improvement of scientific technology and the improvement of consciousness of human for protecting the environment, the environment of the earth is protected while the development of the scientific technology is carried out; solar photovoltaic equipment is the equipment that converts solar energy into the electric power energy, and the light energy who gathers through solar panel converts the electric power energy into through internal circuit to carry out electric power storage with power transmission to work load or in the battery, so not only can reduce the pollution to the environment, can reduce the overuse to other energy simultaneously.
When the solar photovoltaic equipment in the prior art is converted into electric power and is input into a load, the temperature of a transmission circuit is often too high due to too high input voltage, the service lives of the load and a storage battery can be shortened, and internal components of the circuit can be damaged in severe cases.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: a voltage protection circuit for a solar photovoltaic device is provided to solve the above-mentioned problems.
The technical scheme is as follows: a voltage protection circuit for a solar photovoltaic device, comprising: the device comprises a voltage monitoring module, a voltage detection module and a temperature control detection module;
the voltage monitoring module monitors the voltage of the solar photovoltaic equipment during working, when the voltage is normal, the LED lamp displays green, and when the voltage is too high or too low, the LED lamp displays red to remind workers;
the voltage detection module detects and calculates the voltage magnitude and amplifies and outputs a voltage signal;
when the voltage of the solar photovoltaic equipment is too high, the temperature inside the circuit can be increased by the temperature control detection module, so that the temperature can be detected and controlled, and the solar photovoltaic equipment can be better protected from working.
In a further embodiment, the voltage monitoring module comprises: the LED lamp comprises an integrated circuit U1, an LED lamp D1, a capacitor C1, a capacitor C2, an LED lamp D2, a resistor R2, a resistor R1, a resistor R3, a voltage stabilizing diode D3 and an adjustable resistor RV 1; wherein, pin 7 of the integrated circuit U1 is connected to the negative electrode of the LED lamp D1 and one end of the resistor R3, one end of the resistor R2 is connected to the positive electrode of the LED lamp D1, the other end of the resistor R3 is connected to the positive electrode of the LED lamp D2, pin 3 of the integrated circuit U1 is connected to pin 8, and is connected to one end of the resistor R1 and the other end of the resistor R2 for output, pin 4 and pin 5 of the integrated circuit U1 are connected to the other end of the resistor R1 and one end of the capacitor C2, pin 1 of the integrated circuit U1 is connected to one end of the capacitor C1 and the negative electrode of the zener diode D3, pin 6 of the integrated circuit U1 is connected to the negative electrode of the LED lamp D2, the positive electrode of the zener diode D3, the other end of the capacitor C5, the other end of the capacitor C2 and one end of the adjustable resistor R57324, the No. 2 pin of the integrated circuit U1 is connected with the adjustable end of the adjustable resistor RV1, and the other end of the adjustable resistor RV1 inputs signals.
In a further embodiment, the voltage detection module comprises: an operational amplifier U2, an AD converter U3, an operational amplifier U4, a capacitor C8, a resistor R7, a resistor R6, a capacitor C7, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R4 and a resistor R5; wherein, pin No. 3 of the operational amplifier U2 is connected to and inputs a signal at the same time with one end of the resistor R7 and one end of the capacitor C8, pin No. 2 of the operational amplifier U2 is connected to and inputs a signal at the same time with the other end of the capacitor C8, the other end of the resistor R7 is grounded, pin No. 1 of the operational amplifier U2 is connected to and inputs a signal at the same time with one end of the resistor R6 and pin No. 2 of the AD converter U3, pin No. 4 of the AD converter U3 is connected to and inputs a signal at the same time with one end of the capacitor C7 and one end of the capacitor C3, the other end of the resistor R6 is connected to and grounded to the other end of the capacitor C7, pin No. 3 of the AD converter U3 is connected to and one end of the capacitor C4, pin No. 1 of the AD converter U3 is connected to and one end of the capacitor C5, pin No. 8 of the AD converter U3 is connected to and grounded at the other end of the, the No. 7 pin of the AD converter U3 is connected with the other end of the capacitor C6, the No. 6 pin of the AD converter U3 is connected with the other end of the capacitor C4 and the No. 5 pin of the operational amplifier U4, the No. 5 pin of the AD converter U3 is connected with the other end of the capacitor C3, the No. 6 pin of the operational amplifier U4 is connected with one end of the resistor R5 and one end of the resistor R4, the other end of the resistor R5 is grounded, and the No. 7 pin of the operational amplifier U4 is connected with the other end of the resistor R4 and outputs signals.
In a further embodiment, the temperature control detection module comprises: a resistor R8, a resistor R9, a capacitor C9, a diode D4, a thermistor RT1, an amplifier U7, a diode D8, a resistor R10, a diode D6, a triode Q1, a relay J1, a capacitor C10, a resistor R11, a diode D7, a diode D5, an LED lamp D9, a capacitor C11, a switch SW2, a button SW3, an adjusting switch SW1, a trigger U6 and a trigger U5; wherein, one end of the resistor R8 inputs signals, the other end is connected with one end of the resistor R9, one end of the thermistor RT1, the cathode of the diode D4 and one end of the capacitor C9 at the same time, the pin No. 2 of the amplifier U7 is connected with the other end of the resistor R9 and the anode of the diode D8 at the same time, the pin No. 3 of the amplifier U7 is connected with the other end of the thermistor RT1, one end of the resistor R10, the anode of the diode D5 and the anode of the diode D7 at the same time, the pin No. 1 of the amplifier U7 is connected with the other end of the resistor R10 and the anode of the diode D6 at the same time, the cathode of the diode D6 is connected with the base of the triode Q1, the emitter of the triode Q1 is connected with the cathode of the diode D8 and grounded, one end of the capacitor C10 is connected with the other end of the capacitor C9 and the anode of the diode D4 at the same time, a pin 3 of the flip-flop U6 is connected to the other end of the capacitor C10 and one end of the resistor R11, a pin 4 of the flip-flop U6 is connected to a pin 3 of the flip-flop U6 and a negative electrode of the diode D7, a pin 4 of the flip-flop U5 is connected to the other end of the resistor R11 and a negative electrode of the diode D5, a pin 2 of the flip-flop U6 is connected to a pin 1 of the flip-flop U5 and one end of the button SW3, a pin 1 of the flip-flop U6 is connected to a positive electrode of the LED lamp D9 and outputs a signal, a negative electrode of the LED lamp D9 is grounded, a pin 2 of the flip-flop U5 is connected to one end of the capacitor C11 and grounded, the other end of the capacitor C11 is connected to one end of the switch SW2, and the other end of the switch SW2 is connected to a pin 3 of the adjustment switch SW 26 and outputs a signal 67676767 1, the collector of the triode Q1 is connected with one end of the relay J1, the other end of the relay J1 is connected with pin 1 of the adjusting switch SW1, and the other end of the button SW3 is connected with pin 2 of the adjusting switch SW 1.
Has the advantages that: the utility model discloses a to the solar photovoltaic equipment during operation, the voltage of input load and battery monitors, detects the size of voltage and the inside temperature of circuit simultaneously to convert these analog signal into digital signal and export to control terminal, thereby can be better control and protective apparatus, thereby avoid the damage of inside components and parts, thereby improve the life of load and battery.
Drawings
Fig. 1 is a circuit diagram of the present invention.
Fig. 2 is a circuit diagram of the voltage monitoring module of the present invention.
Fig. 3 is a circuit diagram of the voltage detection module of the present invention.
Fig. 4 is a circuit diagram of the temperature control detection module of the present invention.
Detailed Description
A voltage protection circuit for a solar photovoltaic device, comprising: the device comprises a voltage monitoring module, a voltage detection module and a temperature control detection module.
As shown in fig. 2, the voltage monitoring module includes: the LED lamp comprises an integrated circuit U1, an LED lamp D1, a capacitor C1, a capacitor C2, an LED lamp D2, a resistor R2, a resistor R1, a resistor R3, a voltage stabilizing diode D3 and an adjustable resistor RV 1.
As shown in fig. 3, the voltage detection module includes: the circuit comprises an operational amplifier U2, an AD converter U3, an operational amplifier U4, a capacitor C8, a resistor R7, a resistor R6, a capacitor C7, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R4 and a resistor R5.
As shown in fig. 4, the temperature control detection module includes: the LED lamp comprises a resistor R8, a resistor R9, a capacitor C9, a diode D4, a thermistor RT1, an amplifier U7, a diode D8, a resistor R10, a diode D6, a triode Q1, a relay J1, a capacitor C10, a resistor R11, a diode D7, a diode D5, an LED lamp D9, a capacitor C11, a switch SW2, a button SW3, an adjusting switch SW1, a trigger U6 and a trigger U5.
In one embodiment, pin 7 of the integrated circuit U1 is connected to the cathode of the LED lamp D1 and one end of the resistor R3, one end of the resistor R2 is connected to the anode of the LED lamp D1, the other end of the resistor R3 is connected to the anode of the LED lamp D2, pin 3 of the integrated circuit U1 is connected to pin 8 and is connected to one end of the resistor R1 and the other end of the resistor R2 for output, pin 4 and pin 5 of the integrated circuit U1 are connected to the other end of the resistor R1 and one end of the capacitor C2, pin 1 of the integrated circuit U1 is connected to one end of the capacitor C1 and the cathode of the zener diode D3, pin 6 of the integrated circuit U1 is connected to the cathode of the LED lamp D2, the anode of the zener diode D3 and the other end of the capacitor C1 at the same time, The other end of the capacitor C2 is connected with one end of the adjustable resistor RV1, a No. 2 pin of the integrated circuit U1 is connected with the adjustable end of the adjustable resistor RV1, and a signal is input at the other end of the adjustable resistor RV 1.
In one embodiment, pin No. 3 of the operational amplifier U2 is connected to and inputs a signal at the same time with one end of the resistor R7 and one end of the capacitor C8, pin No. 2 of the operational amplifier U2 is connected to and inputs a signal at the same time with the other end of the capacitor C8, the other end of the resistor R7 is grounded, pin No. 1 of the operational amplifier U2 is connected to and inputs a signal at the same time with one end of the resistor R6 and pin No. 2 of the AD converter U3, pin No. 4 of the AD converter U3 is connected to and inputs a signal at the same time with one end of the capacitor C7 and one end of the capacitor C3, the other end of the resistor R6 is connected to and grounded to the other end of the capacitor C7, pin No. 3 of the AD converter U3 is connected to and one end of the capacitor C4, pin No. 1 of the AD converter U3 is connected to and one end of the capacitor C5, pin No. 8 of the AD converter U3 is connected to and the other end of the capacitor C, the No. 7 pin of the AD converter U3 is connected with the other end of the capacitor C6, the No. 6 pin of the AD converter U3 is connected with the other end of the capacitor C4 and the No. 5 pin of the operational amplifier U4, the No. 5 pin of the AD converter U3 is connected with the other end of the capacitor C3, the No. 6 pin of the operational amplifier U4 is connected with one end of the resistor R5 and one end of the resistor R4, the other end of the resistor R5 is grounded, and the No. 7 pin of the operational amplifier U4 is connected with the other end of the resistor R4 and outputs signals.
In one embodiment, one end of the resistor R8 inputs a signal, the other end of the resistor R8 is connected to one end of the resistor R9, one end of the thermistor RT1, the cathode of the diode D4 and one end of the capacitor C9, the pin No. 2 of the amplifier U7 is connected to the other end of the resistor R9 and the anode of the diode D8, the pin No. 3 of the amplifier U7 is connected to the other end of the thermistor RT1, one end of the resistor R10, the anode of the diode D5 and the anode of the diode D7, the pin No. 1 of the amplifier U7 is connected to the other end of the resistor R10 and the anode of the diode D6, the cathode of the diode D6 is connected to the base of the transistor Q1, the emitter of the transistor Q1 is connected to the cathode of the diode D8 and the ground, one end of the capacitor C10 is connected to the other end of the capacitor C9 and the anode of the diode D4, a pin 3 of the flip-flop U6 is connected to the other end of the capacitor C10 and one end of the resistor R11, a pin 4 of the flip-flop U6 is connected to a pin 3 of the flip-flop U6 and a negative electrode of the diode D7, a pin 4 of the flip-flop U5 is connected to the other end of the resistor R11 and a negative electrode of the diode D5, a pin 2 of the flip-flop U6 is connected to a pin 1 of the flip-flop U5 and one end of the button SW3, a pin 1 of the flip-flop U6 is connected to a positive electrode of the LED lamp D9 and outputs a signal, a negative electrode of the LED lamp D9 is grounded, a pin 2 of the flip-flop U5 is connected to one end of the capacitor C11 and grounded, the other end of the capacitor C11 is connected to one end of the switch SW2, and the other end of the switch SW2 is connected to a pin 3 of the adjustment switch SW 26 and outputs a signal 67676767 1, the collector of the triode Q1 is connected with one end of the relay J1, the other end of the relay J1 is connected with pin 1 of the adjusting switch SW1, and the other end of the button SW3 is connected with pin 2 of the adjusting switch SW 1.
The working principle is as follows: when the solar photovoltaic equipment works, the input power voltage is subjected to power size detection through the voltage detection module, the voltage is subjected to filtering input through the capacitor C8, the resistor R7 protects grounding to prevent workers from getting an electric shock, the optical signal input by the operational amplifier U2 is subjected to internal operational amplification output, and is simultaneously input to the AD converter U3 to be converted into a digital signal, wherein the capacitor C3, the capacitor C4 and the capacitor C5 form a capacitor which is used for increasing the capacitive reactance of the circuit, meanwhile, the capacitor C7 is connected with the resistor R6 in series to absorb peak voltage to reduce interference and provide a signal with high signal-to-noise ratio for the next stage, meanwhile, the digital signal is output to the operational amplifier U4 to be subjected to operational amplification output, and the resistor R5 is connected with the resistor R4 in parallel to be shunted, so that the operational amplifier; meanwhile, the digital signal is output to the voltage monitoring module and the temperature control detection module; in the voltage monitoring module, an integrated circuit U1, a resistor R1, a capacitor C2, a voltage stabilizing diode D3 and an adjustable resistor RV1 form a monitoring circuit; when the voltage of the pin 2 input to the integrated circuit U1 is normal, the pin No. 7 of the integrated circuit U1 is at low level, and the LED lamp D1 is turned on; if the input voltage is lower than the set threshold level, the integrated circuit U1 is set, the No. 7 pin of the integrated circuit U1 is changed to be high level, the LED lamp D1 is turned off, and the LED lamp D2 is bright red; if the monitored voltage is lower than normal for a long time, the integrated circuit U1 monostable can continue to operate; the resistor R2 and the resistor R3 protect the LED lamp D2 and the LED lamp D1 and increase the impedance of the LED lamp D1; in the temperature control detection module, a voltage signal enters the module through a resistor R8; the temperature of a signal is detected through a thermistor RT1, the signal is amplified through an amplifier U7, a voltage signal is conducted through a diode D4 and output to a trigger U6, a temperature signal is output to a trigger U5 through a diode D5, a capacitor C9 and a capacitor C11 are subjected to circuit filtering and decoupling, the resistor R10 protects input impedance, when the temperature signal is overlarge, the trigger U6 triggers an LED lamp D9 to display red, the temperature is overlarge, an alarm signal output value control terminal is generated at the same time, when the temperature is reduced to normal work, a button SW3 is pressed, a switch SW1 is adjusted to attract a pin No. 1, and meanwhile, the signal is reversely output; when the temperature signal is normal, the triode Q1 is conducted and absorbed by the relay J1, and the voltage signal is absorbed and output to the load or the storage battery by the SW 2; the utility model discloses can be better control and protective apparatus to avoid inside components and parts to damage, thereby improve the life of load and battery.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be modified to perform various equivalent transformations, which all belong to the protection scope of the present invention.
Claims (6)
1. A voltage protection circuit for a solar photovoltaic device, comprising: the device comprises a voltage monitoring module, a voltage detection module and a temperature control detection module; it is characterized in that;
the voltage monitoring module includes: the LED lamp comprises an integrated circuit U1, an LED lamp D1, a capacitor C1, a capacitor C2, an LED lamp D2, a resistor R2, a resistor R1, a resistor R3, a voltage stabilizing diode D3 and an adjustable resistor RV 1; wherein, pin 7 of the integrated circuit U1 is connected to the negative electrode of the LED lamp D1 and one end of the resistor R3, one end of the resistor R2 is connected to the positive electrode of the LED lamp D1, the other end of the resistor R3 is connected to the positive electrode of the LED lamp D2, pin 3 of the integrated circuit U1 is connected to pin 8, and is connected to one end of the resistor R1 and the other end of the resistor R2 for output, pin 4 and pin 5 of the integrated circuit U1 are connected to the other end of the resistor R1 and one end of the capacitor C2, pin 1 of the integrated circuit U1 is connected to one end of the capacitor C1 and the negative electrode of the zener diode D3, pin 6 of the integrated circuit U1 is connected to the negative electrode of the LED lamp D2, the positive electrode of the zener diode D3, the other end of the capacitor C5, the other end of the capacitor C2 and one end of the adjustable resistor R57324, the No. 2 pin of the integrated circuit U1 is connected with the adjustable end of the adjustable resistor RV1, and the other end of the adjustable resistor RV1 inputs signals.
2. The voltage protection circuit for a solar photovoltaic device of claim 1, wherein the voltage detection module comprises: an operational amplifier U2, an AD converter U3, an operational amplifier U4, a capacitor C8, a resistor R7, a resistor R6, a capacitor C7, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R4 and a resistor R5; wherein, pin No. 3 of the operational amplifier U2 is connected to and inputs a signal at the same time with one end of the resistor R7 and one end of the capacitor C8, pin No. 2 of the operational amplifier U2 is connected to and inputs a signal at the same time with the other end of the capacitor C8, the other end of the resistor R7 is grounded, pin No. 1 of the operational amplifier U2 is connected to and inputs a signal at the same time with one end of the resistor R6 and pin No. 2 of the AD converter U3, pin No. 4 of the AD converter U3 is connected to and inputs a signal at the same time with one end of the capacitor C7 and one end of the capacitor C3, the other end of the resistor R6 is connected to and grounded to the other end of the capacitor C7, pin No. 3 of the AD converter U3 is connected to and one end of the capacitor C4, pin No. 1 of the AD converter U3 is connected to and one end of the capacitor C5, pin No. 8 of the AD converter U3 is connected to and grounded at the other end of the, the No. 7 pin of the AD converter U3 is connected with the other end of the capacitor C6, the No. 6 pin of the AD converter U3 is connected with the other end of the capacitor C4 and the No. 5 pin of the operational amplifier U4, the No. 5 pin of the AD converter U3 is connected with the other end of the capacitor C3, the No. 6 pin of the operational amplifier U4 is connected with one end of the resistor R5 and one end of the resistor R4, the other end of the resistor R5 is grounded, and the No. 7 pin of the operational amplifier U4 is connected with the other end of the resistor R4 and outputs signals.
3. The voltage protection circuit for solar photovoltaic devices of claim 1, wherein said temperature-controlled detection module comprises: a resistor R8, a resistor R9, a capacitor C9, a diode D4, a thermistor RT1, an amplifier U7, a diode D8, a resistor R10, a diode D6, a triode Q1, a relay J1, a capacitor C10, a resistor R11, a diode D7, a diode D5, an LED lamp D9, a capacitor C11, a switch SW2, a button SW3, an adjusting switch SW1, a trigger U6 and a trigger U5; wherein, one end of the resistor R8 inputs signals, the other end is connected with one end of the resistor R9, one end of the thermistor RT1, the cathode of the diode D4 and one end of the capacitor C9 at the same time, the pin No. 2 of the amplifier U7 is connected with the other end of the resistor R9 and the anode of the diode D8 at the same time, the pin No. 3 of the amplifier U7 is connected with the other end of the thermistor RT1, one end of the resistor R10, the anode of the diode D5 and the anode of the diode D7 at the same time, the pin No. 1 of the amplifier U7 is connected with the other end of the resistor R10 and the anode of the diode D6 at the same time, the cathode of the diode D6 is connected with the base of the triode Q1, the emitter of the triode Q1 is connected with the cathode of the diode D8 and grounded, one end of the capacitor C10 is connected with the other end of the capacitor C9 and the anode of the diode D4 at the same time, a pin 3 of the flip-flop U6 is connected to the other end of the capacitor C10 and one end of the resistor R11, a pin 4 of the flip-flop U6 is connected to a pin 3 of the flip-flop U6 and a negative electrode of the diode D7, a pin 4 of the flip-flop U5 is connected to the other end of the resistor R11 and a negative electrode of the diode D5, a pin 2 of the flip-flop U6 is connected to a pin 1 of the flip-flop U5 and one end of the button SW3, a pin 1 of the flip-flop U6 is connected to a positive electrode of the LED lamp D9 and outputs a signal, a negative electrode of the LED lamp D9 is grounded, a pin 2 of the flip-flop U5 is connected to one end of the capacitor C11 and grounded, the other end of the capacitor C11 is connected to one end of the switch SW2, and the other end of the switch SW2 is connected to a pin 3 of the adjustment switch SW 26 and outputs a signal 67676767 1, the collector of the triode Q1 is connected with one end of the relay J1, the other end of the relay J1 is connected with pin 1 of the adjusting switch SW1, and the other end of the button SW3 is connected with pin 2 of the adjusting switch SW 1.
4. The voltage protection circuit for solar photovoltaic devices of claim 1, wherein said integrated circuit U1 is model 555.
5. The voltage protection circuit for solar photovoltaic devices of claim 2, wherein the model number of the AD converter U3 is AD736 BR.
6. The voltage protection circuit for solar photovoltaic equipment of claim 3, wherein the type of the trigger U6 and the type of the trigger U5 are both CD 4013.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020466591.2U CN211656448U (en) | 2020-04-02 | 2020-04-02 | Voltage protection circuit for solar photovoltaic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020466591.2U CN211656448U (en) | 2020-04-02 | 2020-04-02 | Voltage protection circuit for solar photovoltaic equipment |
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| CN211656448U true CN211656448U (en) | 2020-10-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113394013A (en) * | 2021-05-18 | 2021-09-14 | 周龙珍 | Intelligent voltage transformer |
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2020
- 2020-04-02 CN CN202020466591.2U patent/CN211656448U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113394013A (en) * | 2021-05-18 | 2021-09-14 | 周龙珍 | Intelligent voltage transformer |
| CN113394013B (en) * | 2021-05-18 | 2022-06-07 | 南京博纳威电子科技有限公司 | Intelligent voltage transformer |
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