CN210986522U - switch auxiliary circuit, switch circuit and L ED lamp - Google Patents
switch auxiliary circuit, switch circuit and L ED lamp Download PDFInfo
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- CN210986522U CN210986522U CN201922492687.6U CN201922492687U CN210986522U CN 210986522 U CN210986522 U CN 210986522U CN 201922492687 U CN201922492687 U CN 201922492687U CN 210986522 U CN210986522 U CN 210986522U
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Abstract
the application discloses a switch auxiliary circuit, a switch circuit and an L ED lamp, wherein the switch auxiliary circuit comprises a rectifying circuit, a control circuit and a second on-off circuit, the rectifying circuit is configured to rectify input alternating current and output direct current, the control circuit outputs a control signal for controlling the first on-off circuit and the second on-off circuit to be disconnected if the current of the direct current output by the rectifying circuit is 0, otherwise, the control circuit outputs a control signal for controlling the first on-off circuit and the second on-off circuit to be connected, the first on-off circuit is configured to be connected or disconnected with the first end and the second end under the control of the control signal output by the control circuit, the second on-off circuit is electrically connected with a zero line input end of an alternating current power supply, the second end is electrically connected with a zero line output end of the alternating current power supply, the control end is electrically connected with the control circuit, and the control circuit is configured to be connected or disconnected with the first end and the second end of the second on-.
Description
Technical Field
the application relates to the technical field of circuits, in particular to a switch auxiliary circuit, a switch circuit and an L ED lamp.
Background
in the related art, one or more capacitors are generally disposed in a power load of an ac power source for a certain purpose, for example, in a light Emitting Diode (L ED) lamp model shown in fig. 1, three capacitors CA, CB, C1 and C2 are disposed, where CA and CB are parasitic capacitors of a lamp panel to a ground (PE), C1 is a power Electromagnetic Compatibility (EMC) capacitor and a parasitic capacitor, and C2 is a filter capacitor.
in actual use, the switch of the L ED lamp may be connected to the zero line of the AC power source, as shown in FIG. 1, and the Switch (SW) is electrically connected to the zero line port (L) of the AC power source, in this case, when the Switch (SW) is turned off, assuming that L0-PE is 220V AC, when L1-PE is in positive voltage, current charges CA and CB through L2 ED, when L3-PE is in negative voltage, CA and CB discharge through L4 ED, current charged and discharged by CA and CB flows through L5 ED, so that L6 ED is slightly bright, current of L7 ED lamp cannot be completely turned off, and when L8-PE is in negative voltage, V + and V-are equipotential through C2, A point voltage is V _ L EDB + V _ L EDC, reverse voltage of L EDA is V _ L EDB + V _ L EDC, and when L8-PE is in negative voltage, more reverse voltage of L EDA is greater, so that L EDA lamp bead may be broken down.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a switch auxiliary circuit.
The embodiment of the application also provides a switch circuit.
the embodiment of the application also provides an L ED lamp.
The embodiment of the application adopts the following technical scheme:
In a first aspect of the present application, there is provided a switching auxiliary circuit, including: a rectifying circuit configured to rectify an alternating current input from an alternating current power supply and output a direct current; the control circuit is electrically connected with the rectifying circuit and is configured to output a control signal for controlling the first on-off circuit and the second on-off circuit to be switched off when the current of the direct current output by the rectifying circuit is 0, and output a control signal for controlling the first on-off circuit and the second on-off circuit to be switched on when the current of the direct current output by the rectifying circuit is more than 0; the first on-off circuit is electrically connected with the live wire input end of the alternating current power supply at a first end, is electrically connected with the live wire output end of the alternating current power supply at a second end, is electrically connected with the control circuit at a control end, and is configured to be controlled by the control signal output by the control circuit to turn on or turn off the electrical connection between the first end and the second end; and the first end of the second on-off circuit is electrically connected with the zero line input end of the alternating current power supply, the second end of the second on-off circuit is electrically connected with the zero line output end of the alternating current power supply, and the control end of the second on-off circuit is electrically connected with the control circuit and is configured to be switched on or off under the control of the control signal output by the control circuit.
Optionally, the rectifier circuit comprises: the rectifier circuit is configured to rectify alternating current input through the first input end and the second input end and output direct current from the output end; the control circuit includes: a first control circuit and a second control circuit, wherein the first control circuit comprises: the first end is electrically connected with the output end of the rectifying circuit, the second end is electrically connected with the input end of the zero line, the third end is electrically connected with the input end of the live line, the fourth end is electrically connected with the control end of the first on-off circuit and the output end of the live line, a path between the third end and the fourth end is conducted under the condition that a current exists in the path between the first end and the second end, otherwise, the path between the third end and the fourth end is cut off; the second control circuit includes: the first end of the second control circuit is electrically connected with the output end of the rectifying circuit, the second end of the second control circuit is electrically connected with the zero line input end, the third end of the second control circuit is electrically connected with the zero line input end, the fourth end of the second control circuit is connected with the control end of the second on-off circuit and the zero line output end, and a path between the third end of the second control circuit and the fourth end of the second control circuit is conducted under the condition that a path between the first end of the second control circuit and the second end of the second control circuit has current, otherwise, the path between the third end of the second control circuit and the fourth end of the second control circuit is cut off; the first on-off circuit is configured to disconnect a path between a first end of the first on-off circuit and a second end of the first on-off circuit when a voltage value of a control end of the first on-off circuit is zero, and otherwise, conduct a path between the first end of the first on-off circuit and the second end of the first on-off circuit; the second on-off circuit is configured to disconnect a path between a first end of the second on-off circuit and a second end of the second on-off circuit when a voltage value of a control end of the second on-off circuit is zero, and otherwise, conduct a path between the first end of the second on-off circuit and the second end of the second on-off circuit.
Optionally, the rectifier circuit comprises: the positive pole of the first diode is electrically connected with the live wire input end, the negative pole of the first diode is electrically connected with the negative pole of the second diode, the positive pole of the second diode is electrically connected with the zero line input end, and the output end of the rectifying circuit is arranged between the negative pole of the first diode and the negative pole of the second diode.
Optionally, the rectifier circuit further comprises: the circuit comprises a first load resistor, a first capacitor and a second capacitor, wherein the first load resistor is electrically connected between the anode of the first diode and the live wire input end after being connected with the first capacitor in parallel, and the second capacitor is connected with the second diode in parallel.
Optionally, the method further comprises: the second load resistor is electrically connected between the third end of the first control circuit and the live wire input end; and a third load resistor electrically connected between the fourth terminal of the first control circuit and the live output terminal.
Optionally, the method further comprises: the fourth load resistor is electrically connected between the third end of the second control circuit and the input end of the zero line; and the fifth load resistor is electrically connected between the fourth end of the second control circuit and the zero line output end.
Optionally, the first control circuit comprises: a first bidirectional optocoupler; the second control circuit includes: a second bidirectional optical coupler.
Optionally, the first on/off circuit includes: a first bidirectional thyristor; the second on-off circuit includes: a second bidirectional thyristor.
Optionally, the first on/off circuit includes: a first relay; the second on-off circuit includes: and a second relay.
The application second aspect provides a switch circuit, including switch and foretell switch auxiliary circuit, wherein, the switch electrical connection is in between switch auxiliary circuit and alternating current power supply's the live wire input, perhaps, the switch electrical connection is in between switch auxiliary circuit and alternating current power supply's the zero line input.
the third aspect of the application provides an L ED lamp which comprises an L ED lamp panel and the switch circuit, wherein the switch circuit is electrically connected between an alternating current power supply and the L ED lamp panel.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects: in the switch auxiliary circuit provided in this embodiment, the rectifying circuit supplies power to the first control circuit and the second control circuit, so that the control end of the first on-off circuit is connected to the live wire of the ac power supply and the control end of the second on-off circuit is connected to the zero wire of the ac power supply, so that the paths between the live wire input end of the ac circuit and the live wire output end, and between the zero wire input end and the zero wire output end are connected, and if the switch disposed on the zero wire or the live wire is turned off, the rectifying circuit stops supplying power to the first control circuit and the second control circuit, so that the paths between the control end of the first on-off circuit and the live wire of the ac power supply and between the control end of the second on-off circuit and the zero wire of the ac power supply are turned off, so that the paths between the live wire input end of the ac circuit and the live wire output end, and between the zero wire input end and the zero wire output, the current can not flow to the power supply load, so that various problems caused by the fact that the current still flows in the power supply load after the switch is disconnected are avoided, and the effectiveness of the switch is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic diagram of a circuit model of an LED lamp in the related art;
Fig. 2 is a schematic structural diagram of a switch auxiliary circuit according to an embodiment of the present disclosure;
Fig. 3 is a schematic circuit diagram of a switch auxiliary circuit according to an embodiment of the present disclosure;
Fig. 4 is a schematic structural diagram of a switching circuit according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an L ED lamp provided in an embodiment of the present application;
fig. 6 is a schematic circuit structure diagram of an L ED lamp according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 2 is a schematic structural diagram of a switching auxiliary circuit provided in this embodiment, and as shown in fig. 2, the switching auxiliary circuit 100 mainly includes: the circuit comprises a rectifying circuit 10, a control circuit 200, a first on-off circuit 40 and a second on-off circuit 50.
In the present embodiment, the rectifier circuit 10 is configured to rectify an alternating current input from an alternating current power supply and output a direct current; a control circuit 200 electrically connected to the rectifier circuit 10, configured to output a control signal for controlling the first on/off circuit and the second on/off circuit to be turned off when a current of the direct current output from the rectifier circuit 10 is 0, and configured to output a control signal for controlling the first on/off circuit 40 and the second on/off circuit 50 to be turned on when the current of the direct current output from the rectifier circuit is greater than 0; the first on-off circuit 10 has a first end electrically connected to the live wire input end of the ac power supply, a second end electrically connected to the live wire output end of the ac power supply, and a control end electrically connected to the control circuit 200, and is configured to turn on or off the electrical connection between the first end and the second end under the control of the control signal output by the control circuit 200; the first end of the second on-off circuit 50 is electrically connected to the zero line input end of the ac power supply, the second end of the second on-off circuit is electrically connected to the zero line output end of the ac power supply, and the control end of the second on-off circuit is electrically connected to the control circuit 200, and is configured to turn on or off the electrical connection between the first end of the second on-off circuit and the second end of the second on-off circuit under the control of the control signal output by the control circuit 200.
in an alternative embodiment of this embodiment, as shown in fig. 2, a rectifier circuit 10 has a first input terminal 101 electrically connected to the live input terminal L in of the ac power source, a second input terminal 102 electrically connected to the neutral input terminal Nin of the ac power source, and an output terminal 103 electrically connected to the first control circuit 20 and the second control circuit 30, and the rectifier circuit 10 rectifies the ac power input through the first input terminal 101 and the second input terminal 102 and outputs the dc power from the output terminal 103.
for example, in the circuit shown in FIG. 3, the rectifying circuit 10 may include a first diode D1 and a second diode D2, the anode of the first diode D1 is electrically connected to the live input terminal L in, the cathode of the first diode D3526 is electrically connected to the cathode of the second diode D2, the anode of the second diode D2 is electrically connected to the neutral input terminal Nin, and the output terminal 103 of the rectifying circuit 10 is disposed between the cathode of the first diode D1 and the cathode of the second diode D2.
optionally, the rectifier circuit 10 may adopt a resistance-capacitance rectifier circuit, and therefore, in an optional implementation manner of this embodiment, as shown in fig. 3, the rectifier circuit 10 may further include a first load resistor R1, a first capacitor C3, and a second capacitor C4, where after the first load resistor R1 is connected in parallel with the first capacitor C3, the first load resistor R1 is electrically connected between the positive electrode of the first diode D1 and the live input terminal L in, and the second capacitor C4 is connected in parallel with the second diode D2.
as shown in fig. 2, the first terminal 201 of the first control circuit 20 is electrically connected to the output terminal 103, the second terminal 102 is electrically connected to the zero line input terminal Nin, the third terminal 203 is electrically connected to the live line input terminal L in, and the fourth terminal 204 is electrically connected to the control terminal 403 of the first on-off circuit 40 and the live line output terminal L out of the ac power supply, and when a current flows through the path between the first terminal 201 and the second terminal 202, the path between the third terminal 203 and the fourth terminal 204 is turned on, and conversely, the path between the third terminal 203 and the fourth terminal 204 is turned off.
Similar to the first control circuit 20, as shown in fig. 2, the first end 301 of the second control circuit 30 is electrically connected to the output end, the second end 302 is electrically connected to the zero line input end Nin, the third end 303 is electrically connected to the zero line input end Nin, the fourth end 304 is connected to the control end 503 of the second on-off circuit 50 and the zero line output end Nout of the ac power supply, when a current flows through a path between the first end 301 of the second control circuit 30 and the second end 302 of the second control circuit 30, a path between the third end 303 of the second control circuit 30 and the fourth end 304 of the second control circuit 30 is on, and conversely, a path between the third end 303 of the second control circuit 30 and the fourth end 304 of the second control circuit 30 is off.
In this embodiment, whether there is current in the path between the first end 201 of the first control circuit 20 and the second end 202 of the first control circuit 20 and the path between the first end 301 of the second control circuit 30 and the second end 302 of the second control circuit 30 is used to control the on/off of the path between the third end 202 of the first control circuit 20 and the fourth end 204 of the first control circuit 20 and the path between the third end 303 of the second control circuit 30 and the fourth end 304 of the second control circuit 30, so as to control the voltages of the control end 401 of the first on/off circuit 40 and the control end 501 of the second on/off module 50.
In a specific implementation process, the first control circuit 20 and the second control circuit 30 may be implemented by logic control circuits, or may be implemented by existing components. For example, in the circuit structure shown in fig. 3, the first control circuit 20 may be implemented by a bidirectional optical coupler U1, and the second control circuit 30 may be implemented by a bidirectional optical coupler U2. Of course, the present invention is not limited to this, and in practical applications, the first control circuit 20 and the second control circuit 30 may also be implemented in other manners, and the present embodiment is not limited to this embodiment.
as shown in fig. 2, the first terminal 401 of the first on/off circuit 40 is electrically connected to the live input terminal L in, and the second terminal 402 is electrically connected to the live output terminal L out, and when the voltage value of the control terminal 403 of the first on/off circuit 40 is zero, the path between the first terminal 401 of the first on/off circuit 40 and the second terminal 402 of the first on/off circuit 40 is disconnected, and conversely, the path between the first terminal 401 of the first on/off circuit 40 and the second terminal 402 of the first on/off circuit 40 is connected.
Similar to the first on-off circuit 40, as shown in fig. 2, the first end 501 of the second on-off circuit 50 is electrically connected to the neutral input Nin, and the second end 502 is electrically connected to the neutral output Nout, when the voltage value of the control end 503 of the second on-off circuit 50 is zero, the path between the first end 501 of the second on-off circuit 50 and the second end 502 of the second on-off circuit 50 is disconnected, and conversely, the path between the first end 501 of the second on-off circuit 50 and the second end 502 of the second on-off circuit 50 is connected.
In a specific implementation process, the first on-off circuit 40 and the second on-off circuit 50 may be implemented by a logic control circuit, or may be implemented by using existing components. For example, in the circuit configuration shown in fig. 3, the first on-off circuit 40 is implemented by a triac Q1, and the second on-off circuit 50 is implemented by a triac Q2, wherein a control terminal (i.e., a gate) of Q1 is electrically connected to the fourth terminal 204 of the first control circuit 20, when a voltage at the fourth terminal 204 is 0, an input voltage at the gate of Q1 is 0, a path between two main electrodes of Q1 is disconnected, and when an input voltage at the gate of Q1 is positive, a path between two main electrodes of Q1 is connected. Similarly, when the voltage at the fourth terminal 304 of the second control circuit 30 is 0, the input voltage at the gate of Q2 is 0, the path between the two main electrodes of Q2 is open, and when the input voltage at the gate of Q2 is positive, the path between the two main electrodes of Q2 is open.
Of course, the present invention is not limited thereto, and the first and second on/off circuits 40 and 50 may be implemented in other ways, such as a relay, in a specific application. The relay can be of a dynamic type (namely normally open) or a dynamic break type (namely normally closed). The coil of the relay is used as a control end, and two upper contacts of the relay are respectively and electrically connected with the input end and the output end of alternating current. For example, in the case of the relay of the movable contact type, when the coil is not energized, the two contacts are opened, and when the coil is energized, the two contacts are closed, that is, when the voltage at the fourth terminal of the first control circuit 20 or the second control circuit 30 is positive, the two contacts are closed, and a path between the input terminal and the output terminal of the alternating current is conducted, and when the voltage at the fourth terminal of the first control circuit 20 or the second control circuit 30 is 0, the two contacts are opened, and a path between the input terminal and the output terminal of the alternating current is disconnected.
in an alternative embodiment of this embodiment, in order to avoid the short circuit between the live line input terminal L in- > the first control circuit- > the live line output terminal L out, as shown in fig. 3, the circuit may further include a second load resistor R2 electrically connected between the third terminal of the first control circuit 20 and the live line input terminal L in, and a third load resistor R3 electrically connected between the fourth terminal of the first control circuit 20 and the live line output terminal L out.
In an alternative embodiment of this embodiment, in order to avoid forming a short circuit between the zero line input Nin- > the second control circuit- > the zero line output Nout, as shown in fig. 3, the circuit may further include: a fourth load resistor R4 electrically connected between the third terminal of the second control circuit 30 and the neutral input Nin; and a fifth load resistor R5 electrically connected between the fourth terminal of the second control circuit 30 and the zero line output Nout.
In the switch auxiliary circuit provided in this embodiment, the rectifying circuit supplies power to the first control circuit and the second control circuit, so that the control end of the first on-off circuit is connected to the live wire of the ac power supply and the control end of the second on-off circuit is connected to the zero wire of the ac power supply, so that the paths between the live wire input end of the ac circuit and the live wire output end, and between the zero wire input end and the zero wire output end are connected, and if the switch disposed on the zero wire or the live wire is turned off, the rectifying circuit stops supplying power to the first control circuit and the second control circuit, so that the paths between the control end of the first on-off circuit and the live wire of the ac power supply and between the control end of the second on-off circuit and the zero wire of the ac power supply are turned off, so that the paths between the live wire input end of the ac circuit and the live wire output end, and between the zero wire input end and the zero wire output, the current can not flow to the power supply load, so that various problems caused by the fact that the current still flows in the power supply load after the switch is disconnected are avoided, and the effectiveness of the switch is improved.
The embodiment of the application also provides a switch circuit.
fig. 4 is a schematic structural diagram of a switching circuit 400 provided in this embodiment, and as shown in fig. 4, the switching auxiliary circuit 100 in the above embodiment includes a switch 410, where the switch 410 may be electrically connected between the switching auxiliary circuit 100 and a live input terminal L in of an ac power supply, or the switch 410 may also be electrically connected between the switching auxiliary circuit 100 and a neutral input terminal Nin of the ac power supply, and fig. 4 only shows a case where the switch 410 is electrically connected between the switching auxiliary circuit 100 and the neutral input terminal Nin of the ac power supply.
By using the switch circuit provided in this embodiment, the current between the ac power supply and the power supply load can be completely cut off when the switch 410 is turned off, and the problem that the switch 410 is not turned off completely can be avoided.
according to the embodiment of the application, an L ED lamp is also provided.
fig. 5 is a schematic structural diagram of an L ED lamp provided in this embodiment, and as shown in fig. 5, the L ED lamp 500 includes an L ED lamp panel 510 and the switch circuit 400 described in the above embodiment, wherein the switch circuit 400 is connected between an ac power supply and the L ED lamp panel 510.
fig. 6 is a schematic circuit structure diagram of an L ED lamp according to an embodiment of the present disclosure, as shown in fig. 6, when SW is turned on, a rectifying circuit composed of R1, C3, D1, D2, and C4 is normally powered, U1 and U2 are turned on, control terminals of Q1 and Q2 are normally enabled, two main electrodes Q1 and Q2 are turned on, when SW is turned off, the rectifying circuit composed of R1, C3, D1, D2, and C4 is stopped, U1 and U2 are turned off, two main electrodes Q1 and Q2 are turned off, Q1 and Q2 are turned off, and no current flows through the L ED lamp panel, so the L ED lamp does not brighten and there is no reverse voltage on the L ED lamp.
In fig. 6, SW is set on the neutral line, and when SW is set on the live line, the same efficiency is achieved, and the details are not repeated.
It should also be noted that in the embodiments of the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (11)
1. A switch assist circuit, comprising:
A rectifying circuit configured to rectify an alternating current input from an alternating current power supply and output a direct current;
The control circuit is electrically connected with the rectifying circuit and is configured to output a control signal for controlling the first on-off circuit and the second on-off circuit to be switched off when the current of the direct current output by the rectifying circuit is 0, and output a control signal for controlling the first on-off circuit and the second on-off circuit to be switched on when the current of the direct current output by the rectifying circuit is more than 0;
The first on-off circuit is electrically connected with the live wire input end of the alternating current power supply at a first end, is electrically connected with the live wire output end of the alternating current power supply at a second end, is electrically connected with the control circuit at a control end, and is configured to be controlled by the control signal output by the control circuit to turn on or turn off the electrical connection between the first end and the second end;
And the first end of the second on-off circuit is electrically connected with the zero line input end of the alternating current power supply, the second end of the second on-off circuit is electrically connected with the zero line output end of the alternating current power supply, and the control end of the second on-off circuit is electrically connected with the control circuit and is configured to be switched on or off under the control of the control signal output by the control circuit.
2. The circuit of claim 1,
The rectifier circuit includes: the rectifier circuit is configured to rectify alternating current input through the first input end and the second input end and output direct current from the output end;
The control circuit includes: a first control circuit and a second control circuit, wherein,
The first control circuit includes: the first end is electrically connected with the output end of the rectifying circuit, the second end is electrically connected with the input end of the zero line, the third end is electrically connected with the input end of the live line, the fourth end is electrically connected with the control end of the first on-off circuit and the output end of the live line, a path between the third end and the fourth end is conducted under the condition that a current exists in the path between the first end and the second end, otherwise, the path between the third end and the fourth end is cut off;
The second control circuit includes: the first end of the second control circuit is electrically connected with the output end of the rectifying circuit, the second end of the second control circuit is electrically connected with the zero line input end, the third end of the second control circuit is electrically connected with the zero line input end, the fourth end of the second control circuit is connected with the control end of the second on-off circuit and the zero line output end, and a path between the third end of the second control circuit and the fourth end of the second control circuit is conducted under the condition that a path between the first end of the second control circuit and the second end of the second control circuit has current, otherwise, the path between the third end of the second control circuit and the fourth end of the second control circuit is cut off;
The first on-off circuit is configured to disconnect a path between a first end of the first on-off circuit and a second end of the first on-off circuit when a voltage value of a control end of the first on-off circuit is zero, and otherwise, conduct a path between the first end of the first on-off circuit and the second end of the first on-off circuit;
The second on-off circuit is configured to disconnect a path between a first end of the second on-off circuit and a second end of the second on-off circuit when a voltage value of a control end of the second on-off circuit is zero, and otherwise, conduct a path between the first end of the second on-off circuit and the second end of the second on-off circuit.
3. The circuit of claim 2, wherein the rectifier circuit comprises: the positive pole of the first diode is electrically connected with the live wire input end, the negative pole of the first diode is electrically connected with the negative pole of the second diode, the positive pole of the second diode is electrically connected with the zero line input end, and the output end of the rectifying circuit is arranged between the negative pole of the first diode and the negative pole of the second diode.
4. The circuit of claim 3, wherein the rectifier circuit further comprises: the circuit comprises a first load resistor, a first capacitor and a second capacitor, wherein the first load resistor is electrically connected between the anode of the first diode and the live wire input end after being connected with the first capacitor in parallel, and the second capacitor is connected with the second diode in parallel.
5. The circuit of claim 2, further comprising:
The second load resistor is electrically connected between the third end of the first control circuit and the live wire input end; and
A third load resistor electrically connected between the fourth terminal of the first control circuit and the live output terminal.
6. The circuit of claim 2, further comprising:
The fourth load resistor is electrically connected between the third end of the second control circuit and the input end of the zero line; and
And the fifth load resistor is electrically connected between the fourth end of the second control circuit and the zero line output end.
7. The circuit of any of claims 2 to 6, wherein the first control circuit comprises: a first bidirectional optocoupler; the second control circuit includes: a second bidirectional optical coupler.
8. The circuit of any of claims 1 to 6, wherein the first on-off circuit comprises: a first bidirectional thyristor; the second on-off circuit includes: a second bidirectional thyristor.
9. The circuit of any of claims 1 to 6, wherein the first on-off circuit comprises: a first relay; the second on-off circuit includes: and a second relay.
10. A switching circuit, comprising: switch and switch auxiliary circuit of any one of claims 1 to 8, wherein the switch is electrically connected between the switch auxiliary circuit and a live input of an alternating current power supply or the switch is electrically connected between the switch auxiliary circuit and a neutral input of an alternating current power supply.
11. an L ED (light emitting diode) L ED lamp is characterized by comprising an L ED lamp panel and the switch circuit of claim 10, wherein the switch circuit is electrically connected between an AC power supply and the L ED lamp panel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922492687.6U CN210986522U (en) | 2019-12-31 | 2019-12-31 | switch auxiliary circuit, switch circuit and L ED lamp |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922492687.6U CN210986522U (en) | 2019-12-31 | 2019-12-31 | switch auxiliary circuit, switch circuit and L ED lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113473679A (en) * | 2021-06-30 | 2021-10-01 | 欧普照明股份有限公司 | Circuit and lighting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113473679A (en) * | 2021-06-30 | 2021-10-01 | 欧普照明股份有限公司 | Circuit and lighting device |
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