CN216852443U - Single-pole switch control circuit based on double live wires - Google Patents
Single-pole switch control circuit based on double live wires Download PDFInfo
- Publication number
- CN216852443U CN216852443U CN202122923401.2U CN202122923401U CN216852443U CN 216852443 U CN216852443 U CN 216852443U CN 202122923401 U CN202122923401 U CN 202122923401U CN 216852443 U CN216852443 U CN 216852443U
- Authority
- CN
- China
- Prior art keywords
- diode
- electrically connected
- resistor
- anode
- cathode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model relates to the technical field of double live wires, in particular to a double live wire-based single-pole switch control circuit which comprises a double live wire, a single-pole switch, a relay and a resistance-capacitance voltage reduction loop.
Description
Technical Field
The utility model relates to the technical field of double live wires, in particular to a double-live-wire-based single-pole switch control circuit.
Background
In the part of the Lamei countries and in other foreign countries, a double-live line circuit is generally used, and generally comprises L1, L2 and a ground wire, wherein L1 and L2 can be understood as +110V and-110V to form 220V alternating current, and a single-pole switch is used for disconnecting a live line branch at this time, so that 110V voltage difference is formed between the other live line and the ground wire, so that a tiny current still exists in the circuit and flows through an electronic equipment product which is closed, and even the risk of electric shock is avoided.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a double-live-wire-based single-pole switch control circuit, which can completely disconnect a double-live-wire circuit and improve the circuit safety.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:
the utility model provides a single-pole switch control circuit based on two live wires, two live wires one end is connected with the commercial power electricity, two live wire other ends are connected with consumer electricity, including single-pole switch and relay, single-pole switch locates on the route of a live wire in two live wires, two contact switches of relay respectively with two live wire electricity are connected and are controlled by single-pole switch.
Further, the circuit also comprises a resistance-capacitance voltage reduction circuit and a bridge rectifier circuit BR 1;
the resistance-capacitance voltage reduction circuit comprises a thermal relay FR1, a resistor R1 and a capacitor C1;
one live wire in the double live wires is electrically connected with one end of the single-pole switch, the other end of the single-pole switch is electrically connected with one end of a thermal relay FR1, the other end of the thermal relay FR1 is electrically connected with one end of a capacitor C1 and one end of a resistor R1 respectively, the other end of the capacitor C1 and the other end of the resistor R1 are electrically connected with a bridge rectifier circuit BR1 respectively, and the bridge rectifier circuit BR1 is electrically connected with a control coil of the relay.
Further, the circuit also comprises a resistor R2, a polarity capacitor E1, a polarity capacitor E2, a voltage regulator diode D1 and a voltage regulator diode D2;
the bridge rectification circuit BR1 comprises a diode D3, a diode D4, a diode D5 and a diode D6;
the cathode of the diode D3 is electrically connected to the anode of the diode D4, the other end of the capacitor C1, and the other end of the resistor R1, the cathode of the diode D4 is electrically connected to the cathode of the diode D6, one end of the resistor R2, the anode of the polar capacitor E1, and the cathode of the zener diode D1, the other end of the resistor R2 is electrically connected to the anode of the polar capacitor E2, the cathode of the zener diode D2, and one end of the control coil of the relay, the other end of the control coil of the relay, the cathode of the polar capacitor E1, the anode of the polar capacitor E2, the anode of the zener diode D1, the anode of the zener diode D2, the anode of the diode D3, and the anode of the diode D5 are all grounded, and the cathode of the diode D5 and the anode of the diode D6 are electrically connected to the other live wire of the live wire.
Further, the LED lamp further comprises a lamp device circuit, wherein the lamp device circuit comprises a bridge rectifier circuit BR2, a diode D11, an inductance coil L1, a chip U1 and a light-emitting diode LED 1;
The bridge rectifier circuit BR2 is electrically connected with two contact switches of the relay, the bridge rectifier circuit BR2 is respectively electrically connected with the cathode of the diode D11, the anode of the LED1 and the HV end of the chip U1, the cathode of the LED1 is electrically connected with one end of the inductance coil L1, and the other end of the inductance coil L1 is respectively electrically connected with the anode of the diode D11 and the DRAIN end of the chip U1.
Further, the circuit also comprises a polar capacitor E4 and a resistor R3;
the anode of the polar capacitor E4 is electrically connected with one end of the resistor R3 and the anode of the light-emitting diode LED1, and the cathode of the polar capacitor E4 is electrically connected with the other end of the resistor R3 and the cathode of the light-emitting diode LED 1.
Further, the device also comprises a thermal relay FR2 and a bridge rectifier circuit BR 2;
the bridge rectification circuit BR2 comprises a diode D7, a diode D8, a diode D9 and a diode D10;
one of the two contact switches of the relay is electrically connected with one end of a thermal relay FR2, the other end of the thermal relay FR2 is electrically connected with the negative electrode of a diode D7 and the positive electrode of a diode D8 respectively, the negative electrode of a diode D9 and the positive electrode of a diode D10 are electrically connected with the other contact switch of the two contact switches of the relay respectively, the negative electrode of the diode D8 is connected with the negative electrode of a diode D10, the negative electrode of a diode D11, the positive electrode of a light-emitting diode LED1 and the HV electrical connection of a chip U1 respectively, and the positive electrode of a diode D7 and the positive electrode of a diode D9 are grounded respectively.
Further, a polarity capacitor E3 is also included;
the anode of the polar capacitor E3 is electrically connected with the cathode of the diode D11, the HV end of the chip U1 and the anode of the light emitting diode LED1, and the cathode of the polar capacitor E3 is grounded.
Further, the resistor RS1 and the resistor RS2 are included;
one end of the resistor RS1 is electrically connected with one end of the resistor RS2 and the CS end of the chip U1, and the other end of the resistor RS1 and the other end of the resistor RS2 are grounded.
The utility model has the beneficial effects that:
the double-live-wire-based single-pole switch control circuit comprises double live wires, a single-pole switch, a relay and a resistance-capacitance voltage reduction circuit, realizes that the single-pole switch simultaneously controls double live wire circuits by utilizing the adsorption principle of a relay coil, thoroughly solves the problem that the double live wire circuits still have micro current after being closed, and avoids the risk of electric shock by mistake.
Drawings
Fig. 1 is a schematic diagram of a switch control structure of a single-pole switch control circuit based on a dual-live wire according to the present invention;
fig. 2 is a schematic diagram of a circuit structure of a lamp device based on a single-pole switch control circuit with a dual live wire according to the present invention.
Detailed Description
In order to explain the technical contents, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 2, the single-pole switch control circuit based on a dual live wire of the present invention includes a single-pole switch and a relay, wherein one end of the dual live wire is electrically connected to a commercial power, and the other end of the dual live wire is electrically connected to a power consumption device, the single-pole switch is disposed on a path of one live wire of the dual live wires, and two contact switches of the relay are respectively electrically connected to the dual live wires and controlled by the single-pole switch.
As can be seen from the above description, the beneficial effects of the present invention are:
the double-live-wire-based single-pole switch control circuit comprises a double-live wire, a single-pole switch, a relay and a resistance-capacitance voltage reduction loop, wherein the single-pole switch is used for controlling the double-live-wire circuit simultaneously by utilizing the adsorption principle of a relay coil, so that the problem that the double-live-wire circuit still has micro current after being closed is thoroughly solved, and the risk of electric shock by mistake is avoided.
Further, the circuit also comprises a resistance-capacitance voltage reduction loop and a bridge rectifier circuit BR 1;
the resistance-capacitance voltage reduction loop comprises a thermal relay FR1, a resistor R1 and a capacitor C1;
One live wire in the double live wires is electrically connected with one end of the single-pole switch, the other end of the single-pole switch is electrically connected with one end of a thermal relay FR1, the other end of the thermal relay FR1 is electrically connected with one end of a capacitor C1 and one end of a resistor R1 respectively, the other end of the capacitor C1 and the other end of the resistor R1 are electrically connected with a bridge rectifier circuit BR1 respectively, and the bridge rectifier circuit BR1 is electrically connected with a control coil of the relay.
As can be seen from the above description, a plurality of components are used to assist the operation of the bridge rectifier circuit BR1, so as to convert the ac power into the dc power, and at the same time, make the main loop current not exceed the set value.
Further, the voltage regulator further comprises a resistor R2, a polarity capacitor E1, a polarity capacitor E2, a voltage regulator diode D1 and a voltage regulator diode D2;
the bridge rectification circuit BR1 comprises a diode D3, a diode D4, a diode D5 and a diode D6;
the cathode of the diode D3 is electrically connected to the anode of the diode D4, the other end of the capacitor C1, and the other end of the resistor R1, the cathode of the diode D4 is electrically connected to the cathode of the diode D6, one end of the resistor R2, the anode of the polar capacitor E1, and the cathode of the zener diode D1, the other end of the resistor R2 is electrically connected to the anode of the polar capacitor E2, the cathode of the zener diode D2, and one end of the control coil of the relay, the other end of the control coil of the relay, the cathode of the polar capacitor E1, the anode of the polar capacitor E2, the anode of the zener diode D1, the anode of the zener diode D2, the anode of the diode D3, and the anode of the diode D5 are all grounded, and the cathode of the diode D5 and the anode of the diode D6 are electrically connected to the other live wire of the live wire.
As can be seen from the above description, a plurality of components are used for resistance-capacitance voltage reduction, limiting the maximum working current and assisting the electrifying work of the relay coil.
Further, the lamp equipment circuit comprises a bridge rectifier circuit BR2, a diode D11, an inductance coil L1, a chip U1 and a light-emitting diode LED 1;
the bridge rectifier circuit BR2 is electrically connected with two contact switches of the relay, the bridge rectifier circuit BR2 is electrically connected with the cathode of the diode D11, the anode of the light-emitting diode LED1 and the HV end of the chip U1 respectively, the cathode of the light-emitting diode LED1 is electrically connected with one end of the inductance coil L1, and the other end of the inductance coil L1 is electrically connected with the anode of the diode D11 and the DRAIN end of the chip U1 respectively.
From the above description, the chip U1 provides a corresponding signal, and the remaining components are used to assist the LED1 in operating the light fixture.
Further, the circuit also comprises a polar capacitor E4 and a resistor R3;
the anode of the polar capacitor E4 is electrically connected with one end of the resistor R3 and the anode of the light-emitting diode LED1, and the cathode of the polar capacitor E4 is electrically connected with the other end of the resistor R3 and the cathode of the light-emitting diode LED 1.
As can be seen from the above description, the polarity capacitor E4 and the resistor R3 are connected in parallel to two ends of the LED1, so as to protect the LED1 from being burned out by directional current breakdown.
Further, the device also comprises a thermal relay FR2 and a bridge rectifier circuit BR 2;
the bridge rectifier circuit BR2 comprises a diode D7, a diode D8, a diode D9 and a diode D10;
one of the two contact switches of the relay is electrically connected with one end of a thermal relay FR2, the other end of the thermal relay FR2 is electrically connected with the negative electrode of a diode D7 and the positive electrode of a diode D8 respectively, the negative electrode of a diode D9 and the positive electrode of a diode D10 are electrically connected with the other contact switch of the two contact switches of the relay respectively, the negative electrode of the diode D8 is connected with the negative electrode of a diode D10, the negative electrode of a diode D11, the positive electrode of a light-emitting diode LED1 and the HV electrical connection of a chip U1 respectively, and the positive electrode of a diode D7 and the positive electrode of a diode D9 are grounded respectively.
As can be seen from the above description, the bridge rectifier circuit BR1 has a rectifying function to convert ac power into dc power, and the thermal relay FR2 makes the main loop current not exceed a set value, so as to facilitate the operation of the lighting fixture.
Further, a polarity capacitor E3 is also included;
The anode of the polar capacitor E3 is electrically connected with the cathode of the diode D11, the HV end of the chip U1 and the anode of the light-emitting diode LED1 respectively, and the cathode of the polar capacitor E3 is grounded.
As can be seen from the above description, the polar capacitor E3 is used to prevent the diode D11 from being broken down by reverse current.
Further, the device also comprises a resistor RS1 and a resistor RS 2;
one end of the resistor RS1 is electrically connected with one end of the resistor RS2 and the CS end of the chip U1, and the other end of the resistor RS1 and the other end of the resistor RS2 are both grounded.
As can be seen from the above description, the resistors RS1 and RS2 protect the electrical connection of the CS port of the chip, and perform the function of shunt protection.
Referring to fig. 1 to fig. 2, a first embodiment of the present invention is:
the utility model provides a double-live wire-based single-pole switch control circuit, wherein one end of a double-live wire is electrically connected with a mains supply, the other end of the double-live wire is electrically connected with an electric device and comprises a single-pole switch and a relay K1, the single-pole switch is arranged on a path of one live wire of the double-live wire, and two contact switches of the relay K1 are respectively electrically connected with the double-live wire and controlled by the single-pole switch;
in the present embodiment, as shown in fig. 1, it includes a thermal relay FR1, a resistor R1, a capacitor C1, and a bridge rectifier circuit BR 1;
The circuit also comprises a resistor R2, a polar capacitor E1, a polar capacitor E2, a voltage stabilizing diode D1 and a voltage stabilizing diode D2;
the bridge rectification circuit BR1 comprises a diode D3, a diode D4, a diode D5 and a diode D6;
one live wire in the double live wires is electrically connected with one end of a single-pole switch, the other end of the single-pole switch is electrically connected with one end of a thermal relay FR1, the other end of the thermal relay FR1 is electrically connected with one end of a capacitor C1 and one end of a resistor R1 respectively, the other end of the capacitor C1 is electrically connected with the other end of a resistor R1, the cathode of a diode D3 and the anode of a diode D4 respectively, and the cathode of the diode D5 and the anode of the diode D6 are electrically connected with the other live wire in the double live wires respectively;
the cathode of the diode D4 is respectively and electrically connected with the cathode of the diode D6, the anode of the polar capacitor E1, the cathode of the voltage stabilizing diode D1 and one end of the resistor R2, the other end of the resistor R2 is respectively and electrically connected with the anode of the polar capacitor E2, the cathode of the voltage stabilizing diode D2 and one end of the control coil of the relay K1, and the other end of the control coil of the relay K1, the cathode of the polar capacitor E1, the cathode of the polar capacitor E2, the anode of the voltage stabilizing diode D1, the anode of the voltage stabilizing diode D2, the anode of the diode D3 and the anode of the diode D5 are all grounded;
In this embodiment, as shown in fig. 2, the lighting device further includes a lighting device circuit, where the lighting device circuit includes a diode D11, an inductor L1, a chip U1, a light emitting diode LED1, and a bridge rectifier circuit BR 2;
the circuit also comprises a polar capacitor E4, a resistor R3, a thermal relay FR2, a polar capacitor E3, a resistor RS1 and a resistor RS 2;
the bridge rectifier circuit BR2 comprises a diode D7, a diode D8, a diode D9 and a diode D10;
one of the two contact switches of the relay K1 is electrically connected with one end of a thermal relay FR2, the other end of the thermal relay FR2 is respectively and electrically connected with the cathode of a diode D7 and the anode of a diode D8, and the cathode of a diode D9 and the anode of the diode D10 are respectively and electrically connected with the other contact switch of the two contact switches of the relay K1;
the negative electrode of the diode D8 is electrically connected to the negative electrode of the diode D10, the positive electrode of the polar capacitor E3, the HV end of the chip U1, the negative electrode of the diode D11, the positive electrode of the polar capacitor E4, one end of the diode R3, and the positive electrode of the light emitting diode LED1, the negative electrode of the light emitting diode LED1 is electrically connected to the other end of the resistor R3, the negative electrode of the polar capacitor E4, and one end of the inductor L1, the other end of the inductor L1 is electrically connected to the positive electrode of the diode D11 and the DRAIN end of the chip U1, one end of the resistor RS1 is electrically connected to one end of the resistor RS2 and the CS end of the chip U1, and the positive electrode of the diode D7, the positive electrode of the diode D9, the negative electrode of the polar capacitor E3, the other end of the resistor RS1, and the other end of the resistor RS2 are all grounded.
In this embodiment, the chip U1 is a BUCK switch control chip BP 9938E.
The utility model provides a working principle of a single-pole switch control circuit based on a double live wire, which comprises the following steps:
locate the single-pole switch on the route of a live wire in the double-live wire, two contact switches of relay are located two double-live wires respectively, when wanting to close consumer, disconnection single-pole switch, the control coil outage of relay this moment, and two contact switches of relay stop to adsorb, break off simultaneously, and double-live wire also breaks off simultaneously this moment, no longer produces other voltage difference with the ground wire, and double-live wire return circuit cuts off the power supply completely.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (8)
1. The utility model provides a single-pole switch control circuit based on two live wires, two live wires one end is connected with the commercial power electricity, two live wire other ends are connected with consumer electricity, a serial communication port, including single-pole switch and relay, single-pole switch locates on the route of a live wire in two live wires, two contact switches of relay respectively with two live wire electricity are connected and are controlled by single-pole switch.
2. The double-live wire-based single-pole switch control circuit is characterized by further comprising a resistance-capacitance voltage reduction circuit and a bridge rectification circuit BR 1;
the resistance-capacitance voltage reduction circuit comprises a thermal relay FR1, a resistor R1 and a capacitor C1;
one live wire in the double live wires is electrically connected with one end of the single-pole switch, the other end of the single-pole switch is electrically connected with one end of a thermal relay FR1, the other end of the thermal relay FR1 is electrically connected with one end of a capacitor C1 and one end of a resistor R1 respectively, the other end of the capacitor C1 and the other end of the resistor R1 are electrically connected with a bridge rectifier circuit BR1 respectively, and the bridge rectifier circuit BR1 is electrically connected with a control coil of the relay.
3. The dual-live wire-based single-pole switch control circuit as claimed in claim 2, further comprising a resistor R2, a polarity capacitor E1, a polarity capacitor E2, a zener diode D1 and a zener diode D2;
the bridge rectification circuit BR1 comprises a diode D3, a diode D4, a diode D5 and a diode D6;
the cathode of the diode D3 is electrically connected to the anode of the diode D4, the other end of the capacitor C1, and the other end of the resistor R1, the cathode of the diode D4 is electrically connected to the cathode of the diode D6, one end of the resistor R2, the anode of the polar capacitor E1, and the cathode of the zener diode D1, the other end of the resistor R2 is electrically connected to the anode of the polar capacitor E2, the cathode of the zener diode D2, and one end of the control coil of the relay, the other end of the control coil of the relay, the cathode of the polar capacitor E1, the anode of the polar capacitor E2, the anode of the zener diode D1, the anode of the zener diode D2, the anode of the diode D3, and the anode of the diode D5 are all grounded, and the cathode of the diode D5 and the anode of the diode D6 are electrically connected to the other live wire of the live wire.
4. The double-live wire-based single-pole switch control circuit of claim 1, further comprising a luminaire circuit, wherein the luminaire circuit comprises a bridge rectifier circuit BR2, a diode D11, an inductor L1, a chip U1 and a light-emitting diode LED 1;
the bridge rectifier circuit BR2 is electrically connected with two contact switches of the relay, the bridge rectifier circuit BR2 is electrically connected with the cathode of the diode D11, the anode of the light-emitting diode LED1 and the HV end of the chip U1 respectively, the cathode of the light-emitting diode LED1 is electrically connected with one end of the inductance coil L1, and the other end of the inductance coil L1 is electrically connected with the anode of the diode D11 and the DRAIN end of the chip U1 respectively.
5. The double-live wire-based single-pole switch control circuit as claimed in claim 4, further comprising a polarity capacitor E4 and a resistor R3;
the anode of the polar capacitor E4 is electrically connected with one end of the resistor R3 and the anode of the light-emitting diode LED1, and the cathode of the polar capacitor E4 is electrically connected with the other end of the resistor R3 and the cathode of the light-emitting diode LED 1.
6. The double-live wire-based single-pole switch control circuit of claim 4, further comprising a thermal relay FR2 and a bridge rectifier circuit BR 2;
The bridge rectifier circuit BR2 comprises a diode D7, a diode D8, a diode D9 and a diode D10;
one of the two contact switches of the relay is electrically connected with one end of a thermal relay FR2, the other end of the thermal relay FR2 is electrically connected with the negative electrode of a diode D7 and the positive electrode of a diode D8 respectively, the negative electrode of a diode D9 and the positive electrode of a diode D10 are electrically connected with the other contact switch of the two contact switches of the relay respectively, the negative electrode of the diode D8 is connected with the negative electrode of a diode D10, the negative electrode of a diode D11, the positive electrode of a light-emitting diode LED1 and the HV electrical connection of a chip U1 respectively, and the positive electrode of a diode D7 and the positive electrode of a diode D9 are grounded respectively.
7. The dual-fire-wire-based single-pole switch control circuit as claimed in claim 4, further comprising a polarity capacitor E3;
the anode of the polar capacitor E3 is electrically connected with the cathode of the diode D11, the HV end of the chip U1 and the anode of the light-emitting diode LED1 respectively, and the cathode of the polar capacitor E3 is grounded.
8. The dual-fire-wire-based single-pole switch control circuit as claimed in claim 4, further comprising a resistor RS1 and a resistor RS 2;
One end of the resistor RS1 is electrically connected with one end of the resistor RS2 and the CS end of the chip U1, and the other end of the resistor RS1 and the other end of the resistor RS2 are both grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122923401.2U CN216852443U (en) | 2021-11-26 | 2021-11-26 | Single-pole switch control circuit based on double live wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122923401.2U CN216852443U (en) | 2021-11-26 | 2021-11-26 | Single-pole switch control circuit based on double live wires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216852443U true CN216852443U (en) | 2022-06-28 |
Family
ID=82104428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122923401.2U Active CN216852443U (en) | 2021-11-26 | 2021-11-26 | Single-pole switch control circuit based on double live wires |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216852443U (en) |
-
2021
- 2021-11-26 CN CN202122923401.2U patent/CN216852443U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2657472C2 (en) | Led lamp comprising a safety module for safe operation on various ballasts | |
| CN103650642A (en) | Lighting control circuit, illuminating lamp using the lighting control circuit, and lighting device using the illuminating lamp | |
| JP5402900B2 (en) | Straight tube fluorescent lamp type LED lighting device | |
| CN207581083U (en) | Band-type brake circuit and elevator control system | |
| CN209627761U (en) | LED Drive Protecting Circuit | |
| JP2015156382A (en) | Led illumination | |
| CN216852443U (en) | Single-pole switch control circuit based on double live wires | |
| CN107396497B (en) | LED lamp tube with single-end and double-end power supply and driving circuit | |
| CN210986522U (en) | switch auxiliary circuit, switch circuit and L ED lamp | |
| CN212785960U (en) | LED drive circuit, on-off control circuit and intelligent home system | |
| CN101833066B (en) | Working state indicator of circuit breaker | |
| CN105792474B (en) | A kind of Width funtion AC driving circuit for LED power | |
| CN209963758U (en) | Circuit for realizing direct current turn-off by using alternating current panel switch | |
| CN109587878B (en) | A + B type LED fluorescent lamp circuit with double-end input | |
| CN110786079B (en) | Lamp tube, protection circuit and protection device applied to lamp tube | |
| CN209748438U (en) | Double-voltage switching circuit for gas warmer | |
| CN207235161U (en) | A kind of LED lamp tube and drive circuit of list both end power supplying | |
| EP3089556B1 (en) | Illumination lamp, illumination apparatus, and illumination control circuit | |
| CN205596413U (en) | Power driving circuit and LED fluorescent tube | |
| CN218217757U (en) | LED dimming circuit and LED lamp | |
| CN108347809A (en) | A kind of LED drive circuit of compatible electronic ballast | |
| CN105576961A (en) | Full wave rectifier circuit and voltage converter | |
| CN212324439U (en) | Safety protection circuit, safety protection device and lamp | |
| CN204104186U (en) | Illuminator and lighting device | |
| CN218771282U (en) | Leakage protection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |