CN218830718U - Turn-off afterglow eliminating circuit and LED driving power supply - Google Patents
Turn-off afterglow eliminating circuit and LED driving power supply Download PDFInfo
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- CN218830718U CN218830718U CN202221996148.1U CN202221996148U CN218830718U CN 218830718 U CN218830718 U CN 218830718U CN 202221996148 U CN202221996148 U CN 202221996148U CN 218830718 U CN218830718 U CN 218830718U
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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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Abstract
The utility model belongs to the technical field of drive power supply, especially, relate to turn-off afterglow eliminating circuit and LED drive power supply, set up between 0-10V driver and controlled lamps and lanterns, include: one end of the voltage division control circuit is connected with the 0-10V driver; the first end of the turn-off signal control circuit is connected with the 0-10V driver and the voltage division control circuit; an afterglow turn-off circuit, wherein the afterglow turn-off circuit is connected with the 0-10V driver, the turn-off signal control circuit and the controlled lamp, so that when the 0-10V driver outputs turn-off voltage, the voltage division control circuit is disconnected, the turn-off signal control circuit is switched on to reduce the voltage of the afterglow turn-off circuit and disconnect the afterglow turn-off circuit, and then the controlled lamp is turned off. The utility model discloses a shut down completely, avoided the production of ghost fire and the emergence of lamps and lanterns afterglow.
Description
Technical Field
The utility model belongs to the technical field of drive power supply, especially, relate to a turn-off afterglow eliminating circuit and LED drive power supply.
Background
An LED driving power supply is a power converter that converts a power supply into a specific voltage and current to drive an LED to emit light, and generally: the input of the LED driving power source includes high-voltage power-frequency alternating current (i.e., commercial power), low-voltage direct current, high-voltage direct current, low-voltage high-frequency alternating current (e.g., output of an electronic transformer), and the like.
At present, lamps can be classified into one type, two type and three type according to the safety protection level, the first type has the highest protection level, and electric shock is placed through grounding of a lamp shell, but because the lamp shell is grounded, the input and the output of the lamps are LED to LED lamp beads, and then parasitic capacitance exists in a loop of an aluminum substrate of the lamp shell, so that the lamps integrated with the 0-10V dimming function are LED to, when the lamps are turned off by wire by using the 0-10V dimming function, the LED lamp beads cannot be turned off completely due to the reason that parasitic parameters form the loop, and the problem that lamp afterglow, commonly called as ghost fire, affects use is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a turn-off afterglow eliminating circuit and LED drive power supply aim at solving among the prior art and integrated the lamps and lanterns of 0-10V function of adjusting luminance when carrying out the drive-by-wire and turn off the lamp, because of parasitic parameter form return circuit lead to the unable complete shutdown of lamp and then lead to lamps and lanterns afterglow to produce the technical problem who influences the use.
In order to achieve the above object, an embodiment of the present invention provides a turn-off afterglow eliminating circuit, which is disposed between a 0-10V driver and a controlled lamp, including:
one end of the voltage division control circuit is connected with the 0-10V driver;
the first end of the turn-off signal control circuit is connected with the 0-10V driver and the voltage division control circuit;
an afterglow turn-off circuit, wherein the afterglow turn-off circuit is connected with the 0-10V driver, the turn-off signal control circuit and the controlled lamp, so that when the 0-10V driver outputs turn-off voltage, the voltage division control circuit is disconnected, the turn-off signal control circuit is switched on to reduce the voltage of the afterglow turn-off circuit and disconnect the afterglow turn-off circuit, and then the controlled lamp is turned off.
Optionally, the voltage division control circuit includes a first resistor, a third resistor, and a voltage stabilization chip; the first end of the first resistor is connected with the positive power supply end of the 0-10V driver, the second end of the first resistor is connected with the reference electrode of the voltage stabilizing chip, the first end of the third resistor is connected with the reference electrode of the voltage stabilizing chip, and the second end of the third resistor is also connected with the negative power supply end of the 0-10V driver; the anode of the voltage stabilizing chip is connected with the negative power supply end, and the cathode of the voltage stabilizing chip is connected with the turn-off signal control circuit.
Optionally, the voltage division control circuit further includes a second resistor, a first end of the second resistor is connected to a second end of the first resistor, and a second end of the second resistor is connected to a reference electrode of the voltage stabilization chip.
Optionally, the turn-off signal control circuit includes a fourth resistor, a second MOS transistor and a fifth resistor, a first end of the fourth resistor is connected to the positive power supply end, a second end of the fourth resistor is connected to the cathode of the voltage stabilization chip, a gate of the second MOS transistor is connected to the second end of the fourth resistor and the cathode of the voltage stabilization chip, a drain of the second MOS transistor is connected to the afterglow turn-off circuit, a source of the second MOS transistor is connected to the negative power supply end, a first end of the fifth resistor is connected to the gate of the second MOS transistor, and a second end of the fifth resistor is connected to the negative power supply end.
Optionally, the turn-off signal control circuit further includes a second diode, an anode of the second diode is connected to the cathode power supply terminal, and a cathode of the second diode is connected to the gate of the second MOS transistor.
Optionally, the afterglow turn-off circuit includes a sixth resistor, a first MOS transistor, and a seventh resistor; the first end of the sixth resistor is connected with the positive power supply end, the first end of the sixth resistor is also connected with the positive connecting end of the controlled lamp, and the second end of the sixth resistor is connected with the drain electrode of the second MOS tube; the grid electrode of the first MOS tube is connected with both the second end of the sixth resistor and the drain electrode of the second MOS tube, the source electrode of the first MOS tube is connected with the negative power supply end, and the drain electrode of the first MOS tube is connected with the negative connecting end of the controlled lamp; the first end of the seventh resistor is connected with the grid electrode of the first MOS tube, and the second end of the seventh resistor is connected with the negative power supply end.
Optionally, afterglow turn-off circuit still includes first diode, the positive pole of first diode with the positive pole feed end with the first end of sixth resistance is all connected, the negative pole of first diode with positive pole link end is connected.
The embodiment of the utility model provides an above-mentioned one or more technical scheme in the turn-off afterglow elimination circuit have one of following technological effect at least:
when 0-10V driver output turn-off voltage, this turn-off voltage's voltage reduces gradually, makes voltage drop on the partial pressure control circuit reduces extremely the partial pressure control circuit disconnection, the voltage drop on the turn-off signal control circuit risees and switches on, and turn-off signal control circuit conduction then can be drawn low afterglow turn-off circuit's voltage, and then make afterglow turn-off circuit disconnection, and then turn-off controlled lamps and lanterns, with this assurance controlled lamps and lanterns do not connect to 0-10V between the driver, and then make because of the return circuit disconnection that controlled lamps and lanterns have parasitic parameter to form, realized closing completely, avoided the production of ghost and the emergence of lamps and lanterns afterglow.
In order to achieve the above object, an embodiment of the present invention provides a LED driving power supply, which includes the above-mentioned turn-off afterglow eliminating circuit.
The embodiment of the utility model provides an above-mentioned one or more technical scheme in the LED drive power supply have one of following technological effect at least:
because the LED driving power supply comprises the cutoff afterglow eliminating circuit, the LED driving power supply can also cut off a loop formed by parasitic parameters of the controlled lamp, complete cutoff is realized, and the occurrence of ghost fire and lamp afterglow is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a block diagram of an overall structure of a turn-off afterglow eliminating circuit connected to a 0-10V driver according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a shutdown afterglow eliminating circuit provided by an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
100. turning off an afterglow eliminating circuit; 110. a voltage division control circuit; 120. a turn-off signal control circuit; 130. an afterglow turn-off circuit; 200. 0-10V drivers; 210. inputting an anti-surge module; 220. an input rectification filter module; 230. and the constant current power supply module.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
In an embodiment of the present invention, as shown in fig. 1-2, a shutdown afterglow eliminating circuit 100 is provided, and the shutdown afterglow eliminating circuit 100 is disposed between the 0-10V driver 200 and the controlled lamp 300.
The off-afterglow eliminating circuit 100 includes a voltage-dividing control circuit 110, an off-signal control circuit 120, and an afterglow off-circuit 130. One end of the voltage division control circuit 110 is connected with the 0-10V driver 200; a first end of the turn-off signal control circuit 120 is connected to both the 0-10V driver 200 and the voltage division control circuit 110; the afterglow turn-off circuit 130 is connected to the 0-10V driver 200, the turn-off signal control circuit 120, and the controlled lamp 300, so that when the 0-10V driver 200 outputs a turn-off voltage, the voltage division control circuit 110 is turned off, and the turn-off signal control circuit 120 is turned on to lower the voltage of the afterglow turn-off circuit 130 and turn off the afterglow turn-off circuit 130, thereby turning off the controlled lamp 300.
When the 200 output turn-off voltages of 0-10V driver, the voltage of this turn-off voltages reduces gradually, makes the pressure drop on the partial pressure control circuit 110 reduces to the partial pressure control circuit 110 disconnection, the pressure drop on the turn-off signal control circuit 120 risees and switches on, and turn-off signal control circuit 120 switches on then can draw down afterglow turn-off circuit 130's voltage, and then make afterglow turn-off circuit 130 disconnection, and then turn-off controlled lamps and lanterns 300, so guarantee do not connect between controlled lamps and lanterns 300 to 0-10V driver 200, and then make because of being controlled lamps and lanterns 300 have the return circuit disconnection that parasitic parameter formed, realized closing completely and go out, avoided the production of ghost and the emergence of lamps and lanterns afterglow.
In another embodiment of the present invention, as shown in fig. 2, the voltage dividing control circuit 110 includes a first resistor R1, a third resistor R3, and a voltage stabilizing chip U1; a first end of the first resistor R1 is connected to a positive power supply terminal Vin + of the 0-10V driver 200, a second end of the first resistor R1 is connected to a reference electrode of the voltage stabilizing chip U1, a first end of the third resistor R3 is connected to a reference electrode of the voltage stabilizing chip U1, and a second end of the third resistor R3 is further connected to a negative power supply terminal Vin-of the 0-10V driver 200; the anode of the voltage stabilizing chip U1 is connected with the negative power supply end Vin-, and the cathode of the voltage stabilizing chip U1 is connected with the turn-off signal control circuit 120.
In this embodiment, the voltage regulator chip U1 has a model TL431 and is a voltage reference IC, and when the voltage to ground of the reference stage is greater than 2.5V, the pull-down current is pulled down, and when the voltage to ground of the control pin is less than 2.5V, the pull-down current is stopped. When the divided voltage of the third resistor R3 is greater than 2.5V, the voltage stabilizing chip U1 is switched on, and when the divided voltage of the third resistor R3 is less than 2.5V, the voltage stabilizing chip U1 is switched off.
In another embodiment of the present invention, as shown in fig. 2, the voltage dividing control circuit 110 further includes a second resistor R2, a first end of the second resistor R2 is connected to a second end of the first resistor R1, and a second end of the second resistor R2 is connected to a reference electrode of the voltage stabilizing chip U1. Through setting up a second resistance R2 more, and then make better current-limiting and partial pressure, promote circuit stability.
In another embodiment of the present invention, as shown in fig. 2, the turn-off signal control circuit 120 includes a fourth resistor R4, a second MOS transistor Q2 and a fifth resistor R5, the first end of the fourth resistor R4 is connected to the positive power supply terminal Vin +, the second end of the fourth resistor R4 is connected to the cathode of the voltage stabilizing chip U1, the gate of the second MOS transistor Q2 is connected to the second end of the fourth resistor R4 and the cathode of the voltage stabilizing chip U1, the drain of the second MOS transistor Q2 is connected to the afterglow turn-off circuit 130, the source of the second MOS transistor Q2 is connected to the negative power supply terminal Vin-, the first end of the fifth resistor R5 is connected to the gate of the second MOS transistor Q2, and the second end of the fifth resistor R5 is connected to the negative power supply terminal Vin-. The fourth resistor R4 and the fifth resistor R5 are used for voltage division.
In another embodiment of the present invention, as shown in fig. 2, the turn-off signal control circuit 120 further includes a second diode ZD2, an anode of the second diode ZD2 is connected to the negative power supply terminal Vin-, and a cathode of the second diode ZD2 is connected to a gate of the second MOS transistor Q2.
In another embodiment of the present invention, as shown in fig. 2, the afterglow turn-off circuit 130 includes a sixth resistor R6, a first MOS transistor Q1, and a seventh resistor R7; a first end of the sixth resistor R6 is connected to the positive power supply terminal Vin +, a first end of the sixth resistor R6 is further connected to a positive connection terminal LED + of the controlled lamp 300, and a second end of the sixth resistor R6 is connected to a drain of the second MOS transistor Q2; the grid electrode of the first MOS transistor Q1 is connected with both the second end of the sixth resistor R6 and the drain electrode of the second MOS transistor Q2, the source electrode of the first MOS transistor Q1 is connected with the negative power supply terminal Vin-, and the drain electrode of the first MOS transistor Q1 is connected with the negative connection terminal LED-of the controlled lamp 300; a first end of the seventh resistor R7 is connected to the gate of the first MOS transistor Q1, and a second end of the seventh resistor R7 is connected to the negative power supply terminal Vin-. Similarly, the sixth resistor and the seventh resistor R7 are used for voltage division.
In another embodiment of the present invention, as shown in fig. 2, the afterglow turn-off circuit 130 further includes a first diode D1, the anode of the first diode D1 is connected to the positive power supply terminal Vin + and the first end of the sixth resistor R6, and the cathode of the first diode D1 is connected to the positive connection terminal LED +. By arranging the first diode D1, the voltage from the positive power supply terminal Vin + to the controlled lamp 300 flows in a single direction, so that backflow is prevented and a loop formed by parasitic parameters of the controlled lamp 300 is cut off.
When the 0-10V power supply is turned off through a 0-10V signal, the voltage of the output end (connected with the Vin + and the Vin-of the circuit) of the power supply is gradually reduced, so that the voltage of R1, R2 and R3 is also gradually reduced, when the voltage of R3 is lower than 2.5V, the pull-down current of U1 to R5 is eliminated, Q2 is switched on, the voltage of R7 is pulled down, and Q1 is switched off; after Q1 is switched off, the loop of the output LED is switched off, so that the afterglow of the LED lamp bead disappears
The specific working principle of the turn-off afterglow eliminating circuit 100 is as follows:
firstly, when the lamp is normally dimmed, the 0-10V driver 200 outputs a dimming voltage, which is a gradually increased voltage, and the dimming voltage is output through the positive power supply terminal Vin +, at this time, the divided voltage of the first resistor R1, the second resistor R2, and the third resistor R3 gradually increases, when the divided voltage of the third resistor R3 increases to be greater than 2.5V, the voltage stabilizing chip U1 is turned on, the divided voltage of the fifth resistor R5 is pulled down after the voltage stabilizing chip U1 is turned on, at this time, the second MOS transistor Q2 is turned off, and after the second MOS transistor Q2 is turned off, the divided voltage of the seventh resistor R7 is not pulled down, so that the first MOS transistor Q1 is turned on, and then the loop of the controlled lamp 300 is turned on, so that the controlled lamp 300 normally operates.
Then, when the controlled lamp 300 is turned off, the 0-10V driver 200 outputs a turn-off voltage, the turn-off voltage is a gradually decreased voltage, and the turn-off voltage is also output through the positive power supply terminal Vin +, at this time, the divided voltage of the first resistor R1, the second resistor R2 and the third resistor R3 gradually decreases, when the divided voltage of the third resistor R3 decreases to be less than 2.5V, the voltage stabilizing chip U1 is turned off, the divided voltage of the fifth resistor R5 is not pulled down any more after the voltage stabilizing chip U1 is turned off, at this time, the second MOS transistor Q2 is turned on, and after the second MOS transistor Q2 is turned on, the divided voltage of the seventh resistor R7 is pulled down, so that the first MOS transistor Q1 is turned off, and then a loop of the controlled lamp 300 is turned off, and a loop formed by parasitic parameters of the controlled lamp 300 cannot be turned on through the setting of the first diode D1, so that complete turn-off is achieved, and occurrence of ghost and occurrence of afterglow of the lamp are avoided.
In another embodiment of the present invention, as shown in fig. 2, the 0-10V driver 200 includes an input anti-surge module 210, an input rectification filter module 220 and a constant current power supply module 230, which are connected in sequence, wherein the input anti-surge module 210 is used for accessing external power, the input rectification filter module 220 and the constant current power supply module 230 are connected to the off afterglow eliminating circuit 100, specifically, the output ends of the input rectification filter module 220 and the constant current power supply module 230 are a positive power supply terminal Vin + and a negative power supply terminal Vin-.
The 0-10V driver 200 is a technology that is well-established and formed in the prior art, and is selected and set by a person skilled in the art, which is not the focus of the protection of the present application, so the present application is not limited thereto.
In another embodiment of the present invention, as shown in fig. 1, there is also provided an LED driving power supply, which includes the above-mentioned turn-off afterglow eliminating circuit 100.
Because the LED driving power supply includes the turn-off afterglow eliminating circuit 100, the LED driving power supply can also disconnect a loop formed by parasitic parameters of the controlled lamp 300, thereby realizing complete turn-off, and avoiding occurrence of a ghost fire and occurrence of lamp afterglow.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A shut-off afterglow eliminating circuit is arranged between a 0-10V driver and a controlled lamp, and is characterized by comprising:
one end of the voltage division control circuit is connected with the 0-10V driver;
the first end of the turn-off signal control circuit is connected with the 0-10V driver and the voltage division control circuit;
an afterglow turn-off circuit, wherein the afterglow turn-off circuit is connected with the 0-10V driver, the turn-off signal control circuit and the controlled lamp, so that when the 0-10V driver outputs turn-off voltage, the voltage division control circuit is disconnected, the turn-off signal control circuit is switched on to reduce the voltage of the afterglow turn-off circuit and disconnect the afterglow turn-off circuit, and then the controlled lamp is turned off.
2. An off afterglow canceling circuit according to claim 1, wherein the voltage dividing control circuit comprises a first resistor, a third resistor and a voltage stabilizing chip; the first end of the first resistor is connected with the positive power supply end of the 0-10V driver, the second end of the first resistor is connected with the reference electrode of the voltage stabilizing chip, the first end of the third resistor is connected with the reference electrode of the voltage stabilizing chip, and the second end of the third resistor is also connected with the negative power supply end of the 0-10V driver; the anode of the voltage stabilizing chip is connected with the negative power supply end, and the cathode of the voltage stabilizing chip is connected with the turn-off signal control circuit.
3. An off afterglow eliminating circuit as defined in claim 2 wherein said voltage dividing control circuit further comprises a second resistor, a first end of said second resistor is connected to a second end of said first resistor, and a second end of said second resistor is connected to a reference electrode of said voltage stabilizing chip.
4. A turn-off afterglow eliminating circuit according to claim 2, wherein said turn-off signal control circuit comprises a fourth resistor, a second MOS transistor and a fifth resistor, a first end of said fourth resistor is connected to said positive power supply terminal, a second end of said fourth resistor is connected to a cathode of said voltage stabilizing chip, a gate of said second MOS transistor is connected to a second end of said fourth resistor and a cathode of said voltage stabilizing chip, a drain of said second MOS transistor is connected to said afterglow turn-off circuit, a source of said second MOS transistor is connected to said negative power supply terminal, a first end of said fifth resistor is connected to a gate of said second MOS transistor, and a second end of said fifth resistor is connected to said negative power supply terminal.
5. An off afterglow canceling circuit as claimed in claim 4, wherein said off signal control circuit further comprises a second diode, an anode of said second diode is connected to said negative power supply terminal, and a cathode of said second diode is connected to a gate of said second MOS transistor.
6. An off-afterglow canceling circuit of claim 4, wherein the afterglow off-circuit comprises a sixth resistor, a first MOS transistor, and a seventh resistor; the first end of the sixth resistor is connected with the positive power supply end, the first end of the sixth resistor is also connected with the positive connecting end of the controlled lamp, and the second end of the sixth resistor is connected with the drain electrode of the second MOS tube; the grid electrode of the first MOS tube is connected with both the second end of the sixth resistor and the drain electrode of the second MOS tube, the source electrode of the first MOS tube is connected with the negative power supply end, and the drain electrode of the first MOS tube is connected with the negative connecting end of the controlled lamp; the first end of the seventh resistor is connected with the grid electrode of the first MOS tube, and the second end of the seventh resistor is connected with the negative power supply end.
7. An off-afterglow canceling circuit as claimed in claim 6, wherein said afterglow off-circuit further comprises a first diode, an anode of said first diode is connected to both said anode power supply terminal and said first terminal of said sixth resistor, and a cathode of said first diode is connected to said anode connection terminal.
8. An LED driving power supply characterized by comprising the off afterglow eliminating circuit as recited in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221996148.1U CN218830718U (en) | 2022-07-29 | 2022-07-29 | Turn-off afterglow eliminating circuit and LED driving power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221996148.1U CN218830718U (en) | 2022-07-29 | 2022-07-29 | Turn-off afterglow eliminating circuit and LED driving power supply |
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| CN218830718U true CN218830718U (en) | 2023-04-07 |
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| CN202221996148.1U Active CN218830718U (en) | 2022-07-29 | 2022-07-29 | Turn-off afterglow eliminating circuit and LED driving power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117524795A (en) * | 2024-01-05 | 2024-02-06 | 深圳市华浩德电子有限公司 | Control circuit without current and spark during contact action of non-afterglow BUCK output relay |
-
2022
- 2022-07-29 CN CN202221996148.1U patent/CN218830718U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117524795A (en) * | 2024-01-05 | 2024-02-06 | 深圳市华浩德电子有限公司 | Control circuit without current and spark during contact action of non-afterglow BUCK output relay |
| CN117524795B (en) * | 2024-01-05 | 2024-04-16 | 深圳市华浩德电子有限公司 | Control circuit without current and spark during contact action of non-afterglow BUCK output relay |
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