CN221225367U - Standby energy-saving circuit - Google Patents
Standby energy-saving circuit Download PDFInfo
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- CN221225367U CN221225367U CN202323119749.1U CN202323119749U CN221225367U CN 221225367 U CN221225367 U CN 221225367U CN 202323119749 U CN202323119749 U CN 202323119749U CN 221225367 U CN221225367 U CN 221225367U
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- 239000002131 composite material Substances 0.000 claims abstract description 48
- 239000003990 capacitor Substances 0.000 claims description 20
- 230000009467 reduction Effects 0.000 claims description 18
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 102100039435 C-X-C motif chemokine 17 Human genes 0.000 description 1
- 101000889048 Homo sapiens C-X-C motif chemokine 17 Proteins 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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Abstract
The utility model provides a standby energy-saving circuit, which relates to the technical field of energy conservation, and comprises: the device comprises a key driving unit, a composite pipe unit, a depressurization unit and a singlechip control unit; the key driving unit is used for sending a first signal to the singlechip control unit when receiving a key signal; the singlechip control unit is used for stopping sending the second signal to the composite pipe unit when receiving the first signal; the composite pipe unit is used for sending a third signal to the depressurization unit when the second signal is not received; and the voltage reducing unit is used for switching off the voltage reducing unit when the third signal is received. According to the utility model, the step-down unit is turned off through the key switch, so that no current flows through the singlechip control unit, standby energy conservation is realized, and the service time of the electric quantity of the battery is prolonged.
Description
Technical Field
The utility model relates to the technical field of energy conservation, in particular to a standby energy-saving circuit.
Background
In the prior art, when a lithium battery power supply circuit is in standby, an enabling port of a voltage reduction chip is suspended by default, and at the moment, the voltage reduction chip outputs voltage by default, so that a singlechip connected with the voltage reduction chip in series can have microamperes to milliamperes of current to pass through even in the standby process, and the consumption of battery electric quantity is caused.
Disclosure of utility model
In view of the above, the present utility model aims to overcome the shortcomings in the prior art, and provide a standby energy-saving circuit. The utility model provides the following technical scheme:
In a first aspect, the present utility model provides a standby power saving circuit, the circuit comprising: the device comprises a key driving unit, a composite pipe unit, a depressurization unit and a singlechip control unit;
the first end of the key driving unit is electrically connected with a battery power supply, the second end of the key driving unit is electrically connected with the third end of the voltage reducing unit, the third end of the key driving unit is respectively electrically connected with the second end of the voltage reducing unit and the second end of the composite pipe unit, the fourth end of the key driving unit is electrically connected with the second end of the singlechip control unit, and the fifth end of the key driving unit is grounded;
the first end of the composite pipe unit is electrically connected with the battery power supply, the third end of the composite pipe unit is electrically connected with the third end of the singlechip control unit, and the fourth end of the composite pipe unit is grounded;
The first end of the voltage reducing unit is electrically connected with the battery power supply, and the third end of the voltage reducing unit is electrically connected with the first end of the singlechip control unit;
The key driving unit is used for sending a first signal to the singlechip control unit when receiving a key signal;
The singlechip control unit is used for stopping sending a second signal to the composite pipe unit when receiving the first signal;
The composite pipe unit is used for sending a third signal to the depressurization unit when the second signal is not received;
The step-down unit is used for turning off the step-down unit when the third signal is received.
In one embodiment, the key driving unit includes: the first diode, the second diode and the key switch;
The first end of the first diode is used as a third end of the key driving unit, and the second end of the first diode is electrically connected with the first end of the key switch;
The first end of the second diode is used as a fourth end of the key driving unit, and the second end of the second diode is electrically connected with the first end of the key switch;
the second end of the key switch is used as a fifth end of the key driving unit.
In an embodiment, the key driving unit further includes: a first resistor and a second resistor;
The first end of the first resistor is used as the first end of the key driving unit, and the second end of the first resistor is electrically connected with the first end of the first diode;
The first end of the second resistor is used as the second end of the key driving unit, and the second end of the second resistor is electrically connected with the first end of the second diode.
In one embodiment, the composite pipe unit comprises: triode and MOS tube;
The base electrode of the triode is respectively and electrically connected with the battery power supply and the third end of the singlechip control unit, the collector electrode of the triode is respectively and electrically connected with the battery power supply and the grid electrode of the MOS tube, the emission set of the triode is electrically connected with the source electrode of the MOS tube, and the emission set of the triode is used as the fourth end of the composite tube unit;
and the drain electrode of the MOS tube is used as the second end of the composite tube unit.
In one embodiment, the composite pipe unit comprises: the third resistor, the fourth resistor, the fifth resistor and the sixth resistor;
The third resistor and the sixth resistor are sequentially connected in series between the battery power supply and the base electrode of the triode;
The fourth resistor is connected in series between the battery power supply and the collector electrode of the triode;
The fifth resistor is connected in series between the collector electrode of the triode and the grid electrode of the MOS tube.
In one embodiment, the step-down unit includes: a buck chip;
the first end of the voltage reduction chip is electrically connected with the battery power supply, the second end and the third end of the voltage reduction chip are respectively electrically connected with the first end of the single chip microcomputer control unit, and the fourth end of the voltage reduction chip is used as the second end of the voltage reduction unit.
In an embodiment, the step-down unit further includes: a first capacitor and a second capacitor;
A first end of the first capacitor is electrically connected with the battery power supply, and a second end of the first capacitor is grounded;
the first end of the second capacitor is electrically connected with the first end of the singlechip control unit, and the second end of the second capacitor is grounded.
In an embodiment, the step-down unit further includes: an inductance;
The second end of the voltage reduction chip is electrically connected with the first end of the singlechip control unit through the inductor.
In an embodiment, the step-down unit further includes: a third diode;
the first end of the third diode is electrically connected with the first end of the inductor;
The second end of the third diode is grounded.
In an embodiment, the step-down unit further includes: a second power supply;
The first end of the second power supply is electrically connected with the first end of the inductor, and the second end of the second power supply is grounded.
According to the standby energy-saving circuit provided by the utility model, the enabling port of the voltage reduction chip is set to be low level through the key switch signal, so that the voltage reduction unit is turned off, the singlechip control unit is turned off, the standby energy saving is realized, and the service time of the electric quantity of the battery is greatly prolonged.
In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic diagram of a standby power saving circuit according to an embodiment of the present utility model;
Fig. 2 shows a schematic structural diagram of a buck unit according to an embodiment of the utility model.
Description of main reference numerals:
100-standby energy-saving circuit; 110-a key driving unit; 120-composite pipe units; 130-a step-down unit; 140-a singlechip control unit.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Example 1
Referring to fig. 1, referring to an embodiment of the present utility model, a standby energy-saving circuit 100 includes: a key driving unit 110, a composite pipe unit 120, a depressurization unit 130 and a singlechip control unit 140;
The first end of the key driving unit 110 is electrically connected to a battery power supply, the second end of the key driving unit 110 is electrically connected to the third end of the voltage reducing unit 130, the third end of the key driving unit 110 is electrically connected to the second end of the voltage reducing unit 130 and the second end of the composite tube unit 120, the fourth end of the key driving unit 110 is electrically connected to the second end of the single chip microcomputer control unit 140, and the fifth end of the key driving unit 110 is grounded;
A first end of the composite pipe unit 120 is electrically connected with the battery power supply, a third end of the composite pipe unit 120 is electrically connected with a third end of the single chip microcomputer control unit 140, and a fourth end of the composite pipe unit 120 is grounded;
A first end of the voltage reducing unit 130 is electrically connected to the battery power supply, and a third end of the voltage reducing unit 130 is electrically connected to a first end of the single-chip microcomputer control unit 140;
The key driving unit 110 is configured to send a first signal IO1 to the single-chip microcomputer control unit 140 when a key signal is received;
The single-chip microcomputer control unit 140 is configured to stop sending the second signal IO2 to the composite pipe unit 120 when receiving the first signal IO 1;
The composite pipe unit 120 is configured to send a third signal IO3 to the step-down unit 130 when the second signal IO2 is not received;
The step-down unit 130 is configured to turn off the step-down unit 130 when the third signal IO3 is received.
In this embodiment, before the key switch SW1 is pressed, the external battery power supplies VCC1 to the step-down unit 130 and the key driving unit 110, at this time, the step-down unit 130 receives a high-level signal, the step-down unit 130 is turned on, and supplies VCC2 to the key driving unit 110 and the single-chip microcomputer control unit 140 respectively, so that the single-chip microcomputer control unit 140 receives the high-level signal, the single-chip microcomputer control unit 140 sends a second signal to the composite tube unit 120, at this time, the lithium battery power supply circuit is in a normal working state, and current in the single-chip microcomputer control unit 140 normally passes. When the lithium battery power supply circuit is required to enter a standby energy-saving state, the singlechip control unit 140 can be disconnected by pressing the key switch SW1, so that the battery power consumption in the standby process is avoided.
Specifically, when the key switch SW1 is pressed, the single-chip microcomputer control unit 140 receives the first signal IO1, it should be noted that the first signal IO1 is an instantaneous low level signal, when the single-chip microcomputer control unit 140 receives the instantaneous low level signal, that is, the first signal IO1, the sending of the second signal IO2 to the composite tube unit 120 is stopped, and when the composite tube unit 120 does not receive the second signal IO2, the sending of the third signal IO3 to the voltage reducing unit 130 is stopped, where the third signal IO3 is a low level signal, and the voltage reducing unit 130 is controlled to be turned off, so that the single-chip microcomputer control unit 140 is turned off, and energy saving is achieved.
The step-down unit 130 is turned on when receiving a high level signal, and turned off when receiving a low level signal.
In one embodiment, the key driving unit 110 includes: a first diode D1, a second diode D2, and a key switch SW1;
A first end of the first diode D1 is used as a third end of the key driving unit 110, and a second end of the first diode D2 is electrically connected with the first end of the key switch SW 1;
a first end of the second diode D2 is used as a fourth end of the key driving unit 110, and a second end of the second diode D2 is electrically connected to the first end of the key switch SW 1;
The second terminal of the key switch SW1 serves as a fifth terminal of the key driving unit.
In this embodiment, the first end of the first diode D1 is electrically connected to the second end of the voltage reducing unit 130 and the second end of the composite tube unit 120, respectively, and the first end of the second diode D2 is electrically connected to the second end of the single-chip microcomputer control unit.
It should be noted that, the key switch SW1 may generate an arc at the moment of disconnection, and the first diode D1 and the second diode D2 are electrically connected to the key switch SW1 respectively, so as to prevent the key switch SW1 from being damaged by the arc generated when the switch is disconnected.
In an embodiment, the key driving unit 110 further includes: a first resistor R1 and a second resistor R2;
A first end of the first resistor R1 is used as a first end of the key driving unit 110, and a second end of the first resistor R1 is electrically connected with a first end of the first diode D1;
The first end of the second resistor R2 is used as the second end of the key driving unit 110, and the second end of the second resistor R2 is electrically connected to the first end of the second diode D2.
In this embodiment, the first resistor R1 and the second resistor R2 are pull-up resistors. By connecting a pull-up resistor, i.e. the first resistor R1, in series between the battery power source and the first diode D1, the voltage at the first end of the first diode D1 can be pulled up to a high level, so as to ensure that the key driving unit 110 always outputs a high level signal through the third terminal voltage dropping unit 130 of the key driving unit 110 before the key switch SW1 is not pressed.
Similarly, by connecting a pull-up resistor, i.e. the second pull-up resistor R2, in series between the third end of the voltage reducing unit 130 and the second end of the single chip microcomputer control unit 140, it is ensured that the key driving unit 110 always outputs a high level signal to the single chip microcomputer control unit 140 through the fourth end of the key driving unit 110 before the key switch SW1 is not pressed.
In one embodiment, the composite pipe unit 120 includes: triode Q1 and MOS transistor Q2;
The base electrode of the triode Q1 is respectively and electrically connected with the battery power supply and the third end of the singlechip control unit 140, the collector electrode of the triode Q1 is respectively and electrically connected with the battery power supply and the grid electrode of the MOS tube Q2, the emission set of the triode Q1 is electrically connected with the source electrode of the MOS tube Q2, and the emission set of the triode Q1 is used as the fourth end of the composite tube unit 120;
The drain of the MOS transistor Q2 is used as the second end of the composite transistor unit 120.
In this embodiment, when the key switch SW1 is not pressed, the single-chip microcomputer control unit 140 receives the high-level signal and sends a second signal IO2 to the triode Q1 in the composite tube unit 120, where the second signal IO2 is a low-level signal, and the triode Q1 is turned on, so that the first end of the composite tube unit 120 is grounded.
After the key switch SW1 is pressed, the single-chip microcomputer control unit 140 stops sending the second signal IO2 to the triode Q1, at this time, the triode Q1 is turned off, and the MOS transistor Q2 is turned on, so that the third terminal of the key driving circuit outputs a low-level signal, that is, the third signal IO3, to the voltage reducing unit 130, thereby turning off the voltage reducing unit 130.
In one embodiment, the composite pipe unit 120 includes: a third resistor R3, a fourth resistor R4, a fifth resistor R5, and a sixth resistor R6;
The third resistor R3 and the sixth resistor R6 are sequentially connected in series between the battery power supply and the base electrode of the triode Q1;
the fourth resistor R4 is connected in series between the battery power supply and the collector electrode of the triode Q1;
The fifth resistor R5 is connected in series between the collector of the triode Q1 and the grid of the MOS tube Q2.
In this embodiment, the third resistor R3 and the fourth resistor R4 are clamp resistors for limiting voltage and current, and protecting the transistor Q1 and the MOS transistor Q2 from over-voltage or over-current, respectively. The fifth resistor R5 and the sixth resistor R6 are current limiting resistors, wherein the fifth resistor R5 is used for limiting the base current of the triode Q1, adjusting the current gain, and preventing the triode Q1 from being excessively saturated or cut off, and the sixth resistor R6 is used for limiting the gate current of the MOS transistor Q2, so as to ensure the normal operation of the MOS transistor Q2 and avoid damage.
In one embodiment, the step-down unit 130 includes: a buck chip U1;
The first end of the buck chip U1 is electrically connected to the battery power supply, the second end and the third end of the buck chip U1 are respectively electrically connected to the first end of the single-chip microcomputer control unit 140, and the fourth end of the buck chip U1 is used as the second end of the buck unit 130.
In this embodiment, referring specifically to fig. 2, the fourth end of the buck chip U1 is an enabling port of the buck chip U1, and when the enabling port of the buck chip U1 receives a high-level signal, the buck unit 130 works normally to provide the power VCC2 to the singlechip control unit 140 and the key driving unit 110; when the enabling port of the buck chip U1 receives the low level signal, the buck unit 130 is turned off, and the power VCC2 is stopped being supplied to the singlechip control unit 140 and the key driving unit 110, so that the singlechip control unit 140 is turned off, and standby energy saving is achieved.
It should be noted that the ports of the buck chip U1 except the first end, the second end, the third end and the fourth end are all grounded. In this embodiment, the model of the buck chip U1 is XL1509E-12, and in other embodiments, other models may be selected according to actual situations, which is not limited herein.
Referring again to fig. 2, the step-down unit 130 further includes: a first capacitor C1 and a second capacitor C2;
a first end of the first capacitor C1 is electrically connected with the battery power supply, and a second end of the first capacitor C1 is grounded;
The first end of the second capacitor C2 is electrically connected to the first end of the single-chip microcomputer control unit 140, and the second end of the second capacitor C2 is grounded.
In this embodiment, the capacity of the first capacitor C1 is 1uF, the capacity of the second capacitor C2 is 100nF, and in other embodiments, other capacities may be selected according to practical situations, which is not limited herein.
Referring again to fig. 2, the step-down unit 130 further includes: an inductance L;
the second end of the buck chip U1 is electrically connected to the first end of the single-chip microcomputer control unit 140 through the inductor L.
In this embodiment, the inductance value of the inductor L is 68uH, and in other embodiments, other inductance values may be selected according to practical situations, which is not limited herein.
Referring again to fig. 2, the step-down unit 130 further includes: a third diode D3;
A first end of the third diode D3 is electrically connected to a first end of the inductor L;
The second end of the third diode D3 is grounded.
In this embodiment, the model of the third diode D3 is SS340, and in other embodiments, other models may be selected according to practical situations, which is not limited herein.
Referring again to fig. 2, the step-down unit 130 further includes: a second power supply E2;
The first end of the second power supply E2 is electrically connected to the first end of the inductor L, and the second end of the second power supply E2 is grounded.
In the present embodiment, the electromotive force of the second power source E2 is 25V, and in other embodiments, other types may be selected according to practical situations, which is not limited herein.
The standby energy-saving circuit provided by the utility model comprises: the device comprises a key driving unit, a composite pipe unit, a depressurization unit and a singlechip control unit; the first end of the key driving unit is electrically connected with a battery power supply, the second end of the key driving unit is electrically connected with the third end of the voltage reducing unit, the third end of the key driving unit is respectively electrically connected with the second end of the voltage reducing unit and the second end of the composite pipe unit, the fourth end of the key driving unit is electrically connected with the second end of the singlechip control unit, and the fifth end of the key driving unit is grounded; the first end of the composite pipe unit is electrically connected with the battery power supply, the third end of the composite pipe unit is electrically connected with the third end of the singlechip control unit, and the fourth end of the composite pipe unit is grounded; the first end of the voltage reducing unit is electrically connected with the battery power supply, and the third end of the voltage reducing unit is electrically connected with the first end of the singlechip control unit. According to the utility model, the enabling port of the voltage reduction chip is set at a low level through the key switch signal, so that the voltage reduction unit is turned off, the singlechip control unit is disconnected with the voltage reduction unit, no current flows through the singlechip control unit, standby energy conservation is realized, and the service time of the electric quantity of the battery is greatly prolonged.
Claims (10)
1. A standby power saving circuit, the circuit comprising: the device comprises a key driving unit, a composite pipe unit, a depressurization unit and a singlechip control unit;
the first end of the key driving unit is electrically connected with a battery power supply, the second end of the key driving unit is electrically connected with the third end of the voltage reducing unit, the third end of the key driving unit is respectively electrically connected with the second end of the voltage reducing unit and the second end of the composite pipe unit, the fourth end of the key driving unit is electrically connected with the second end of the singlechip control unit, and the fifth end of the key driving unit is grounded;
the first end of the composite pipe unit is electrically connected with the battery power supply, the third end of the composite pipe unit is electrically connected with the third end of the singlechip control unit, and the fourth end of the composite pipe unit is grounded;
The first end of the voltage reducing unit is electrically connected with the battery power supply, and the third end of the voltage reducing unit is electrically connected with the first end of the singlechip control unit;
The key driving unit is used for sending a first signal to the singlechip control unit when receiving a key signal;
The singlechip control unit is used for stopping sending a second signal to the composite pipe unit when receiving the first signal;
The composite pipe unit is used for sending a third signal to the depressurization unit when the second signal is not received;
The step-down unit is used for turning off the step-down unit when the third signal is received.
2. The standby power saving circuit of claim 1, wherein the key driving unit comprises: the first diode, the second diode and the key switch;
The first end of the first diode is used as a third end of the key driving unit, and the second end of the first diode is electrically connected with the first end of the key switch;
The first end of the second diode is used as a fourth end of the key driving unit, and the second end of the second diode is electrically connected with the first end of the key switch;
the second end of the key switch is used as a fifth end of the key driving unit.
3. The standby power saving circuit of claim 2, wherein the key driving unit further comprises: a first resistor and a second resistor;
The first end of the first resistor is used as the first end of the key driving unit, and the second end of the first resistor is electrically connected with the first end of the first diode;
The first end of the second resistor is used as the second end of the key driving unit, and the second end of the second resistor is electrically connected with the first end of the second diode.
4. A standby power saving circuit according to claim 3, wherein the composite tube unit comprises: triode and MOS tube;
The base electrode of the triode is respectively and electrically connected with the battery power supply and the third end of the singlechip control unit, the collector electrode of the triode is respectively and electrically connected with the battery power supply and the grid electrode of the MOS tube, the emission set of the triode is electrically connected with the source electrode of the MOS tube, and the emission set of the triode is used as the fourth end of the composite tube unit;
and the drain electrode of the MOS tube is used as the second end of the composite tube unit.
5. The standby power saving circuit of claim 4, wherein the composite tube unit comprises: the third resistor, the fourth resistor, the fifth resistor and the sixth resistor;
The third resistor and the sixth resistor are sequentially connected in series between the battery power supply and the base electrode of the triode;
The fourth resistor is connected in series between the battery power supply and the collector electrode of the triode;
The fifth resistor is connected in series between the collector electrode of the triode and the grid electrode of the MOS tube.
6. The standby power saving circuit of claim 5, wherein the step-down unit comprises: a buck chip;
the first end of the voltage reduction chip is electrically connected with the battery power supply, the second end and the third end of the voltage reduction chip are respectively electrically connected with the first end of the single chip microcomputer control unit, and the fourth end of the voltage reduction chip is used as the second end of the voltage reduction unit.
7. The standby power saving circuit of claim 6, wherein the buck unit further comprises: a first capacitor and a second capacitor;
A first end of the first capacitor is electrically connected with the battery power supply, and a second end of the first capacitor is grounded;
the first end of the second capacitor is electrically connected with the first end of the singlechip control unit, and the second end of the second capacitor is grounded.
8. The standby power saving circuit of claim 7, wherein the buck unit further comprises: an inductance;
The second end of the voltage reduction chip is electrically connected with the first end of the singlechip control unit through the inductor.
9. The standby power saving circuit of claim 8, wherein the buck unit further comprises: a third diode;
the first end of the third diode is electrically connected with the first end of the inductor;
The second end of the third diode is grounded.
10. The standby power saving circuit of claim 9, wherein the buck unit further comprises: a second power supply;
The first end of the second power supply is electrically connected with the first end of the inductor, and the second end of the second power supply is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323119749.1U CN221225367U (en) | 2023-11-16 | 2023-11-16 | Standby energy-saving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323119749.1U CN221225367U (en) | 2023-11-16 | 2023-11-16 | Standby energy-saving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221225367U true CN221225367U (en) | 2024-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323119749.1U Active CN221225367U (en) | 2023-11-16 | 2023-11-16 | Standby energy-saving circuit |
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|---|---|
| CN (1) | CN221225367U (en) |
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2023
- 2023-11-16 CN CN202323119749.1U patent/CN221225367U/en active Active
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