CN108808662B - Fixed dual-output power supply capable of automatically identifying input voltage - Google Patents
Fixed dual-output power supply capable of automatically identifying input voltage Download PDFInfo
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- CN108808662B CN108808662B CN201810600948.9A CN201810600948A CN108808662B CN 108808662 B CN108808662 B CN 108808662B CN 201810600948 A CN201810600948 A CN 201810600948A CN 108808662 B CN108808662 B CN 108808662B
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- H02J3/005—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
Abstract
The invention discloses a fixed double-output power supply capable of automatically identifying input voltage, which comprises a main circuit and a control circuit, wherein the main circuit comprises an input power supply, a circuit breaker QA0, a break contact of an alternating current contactor QA1, an output path unit I and an output path unit II; one end of a breaker QA0 is connected with the L end of an input power supply, the other end of the breaker QA0 is connected with the break contact of an alternating current contactor QA1 in series, and an output path unit I and an output path unit II are respectively connected with the break contact of the alternating current contactor QA 1; the input end of the control circuit is connected to the connecting point of the QA0 breaker and the QA1 breaking contact, and the output end of the control circuit is connected to the N end of the input power supply. The device is of a single-input double-output structure, and can automatically identify whether an input power supply is 110V or 220V; and the relay coil does not bear the instantaneous high voltage; when the movable contact of the AC contactor QA2 is adhered, the power supply is automatically cut off and the alarm is given, and when the movable contact of the AC contactor QA2 is adhered, the alarm is given by the indicator light.
Description
Technical Field
The invention belongs to the technical field of power supplies, and particularly relates to a fixed dual-output power supply capable of automatically identifying input voltage.
Background
The domestic power voltage standards of different countries in the world are different, the mains voltage of most countries is 220V, but the mains voltage of other countries is 110V and 220V, so that the problem that the rated voltage of domestic appliances at home and abroad is not matched with the power supply voltage is caused. Currently, the power voltage converter already available on the market can convert 220V voltage into 110V output, or conversely convert 110V voltage into 220V output. However, the existing power voltage converter is almost single-input single-output, if the power is input by mistake, the electric appliance can be damaged, even the human body is damaged, and the electric appliance at home and abroad can not be used simultaneously, the input power voltage can not be identified, and whether the input voltage is 220V or 110V, the output voltage is fixed as 220V at one side and 110V at the other side can not be ensured. The characteristics of the existing voltage converter inevitably cause the problems of low safety, inconvenience and the like.
Disclosure of Invention
The invention can automatically select which side of the transformer is input according to different input voltages to enable the output voltages to be fixed at 110V and 220V, can automatically cut off the power supply and warn when the movable contact of the AC contactor QA2 is adhered, and can automatically warn when the movable contact of the AC contactor QA2 is adhered.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a fixed double-output power supply capable of automatically identifying input voltage comprises a main circuit and a control circuit, wherein the main circuit comprises an input power supply, a circuit breaker QA0, a movable contact of an alternating current contactor QA1, an output path unit I and an output path unit II; one end of a breaker QA0 is connected with the L end of an input power supply, the other end of the breaker QA0 is connected with the break contact of an alternating current contactor QA1 in series, and an output path unit I and an output path unit II are respectively connected with the break contact of the alternating current contactor QA 1; the input end of the control circuit is connected to the connecting point of the QA0 breaker and the QA1 breaking contact, and the output end of the control circuit is connected to the N end of the input power supply.
The output path unit I comprises a movable contact of an alternating current contactor QA2, a fuse FA1, a fuse FA2, a transformer TA, an output port I and an output port II.
One end of a movable contact of an alternating current contactor QA2 is connected with a movable contact of an alternating current contactor QA1, the other end of the movable contact of the alternating current contactor QA2 is divided into two paths, one path is connected with one end of a fuse FA1 on the U1 side of the transformer TA after being connected in series, and the other path is connected with the L1 end of an output port I; the other end of the transformer TA at the U1 side is connected with the N end of the input power supply, and the N end of the input power supply is connected with the N end of the output port I; the L1 end, the N end and the XE end of the output port I form a 110V output port.
One end of the transformer TA at the U2 side is connected with the L2 end of the output port II after passing through a fuse FA2, the other end of the transformer TA at the U2 side is connected with the N end of the input power supply, and the N end of the input power supply is connected with the N end of the output port II; and the L2 end, the N end and the XE end of the output port II form a 220V output port.
The output access unit II comprises a break contact of the AC contactor QA2, a fuse FA1, a fuse FA2, a transformer TA, an output port I and an output port II.
One end of a dynamic break contact of the AC contactor QA2 is connected with a dynamic break contact of the AC contactor QA1, the other end of the dynamic break contact of the AC contactor QA2 is divided into two paths, one path is connected with one end of the U2 side of the transformer TA after being connected with the fuse FA2 in series, and the other path is connected with the L2 end of the output port II; the other end of the transformer TA at the U2 side is connected with the N end of the input power supply, the N end of the input power supply is connected with the N end of the output port II, and the L2 end, the N end and the XE end of the output port II form a 220V output port.
One end of the transformer TA at the U1 side is connected with the L1 end of the output port I after passing through the fuse FA1, the other end of the transformer TA at the U1 side is connected with the N end of the input power supply, the N end of the input power supply is connected with the N end of the output port I, and the L1 end, the N end and the XE end of the output port I form a 110V output port.
Rated voltage of the transformer TA at the U2 side is 220V, and rated voltage of the transformer TA at the U1 side is 110V; rated voltages of a coil of the relay KF1 and a coil of the AC contactor QA1 are both 220V, rated voltages of a coil of the relay KF2 and a coil of the AC contactor QA2 are both 110V, and rated voltages of the indicator light PG1 and the indicator light PG2 are both 220V; the rated voltage of indicator light PG3 and indicator light PG4 are both 110V.
The control circuit comprises a first control unit and a second control unit, wherein the first control unit comprises a relay KF1 break contact, a button SF1, an AC contactor QA2 coil, a relay KF2 coil, a relay KF2 break contact, an AC contactor QA2 break contact, an indicator light PG3 and an indicator light PG 4.
One end of a relay KF1 break contact is connected to the connecting point of a breaker QA0 and an AC contactor QA1 break contact, the other end of the relay KF1 break contact is sequentially connected with a button SF1 and a relay KF2 coil in series, and the other end of the relay KF2 coil is connected to the N end of an input power supply; the relay KF2 movable contact is connected with the button SF1 in parallel, and the coil of the AC contactor QA2 and the indicating lamp PG3 are connected with the coil of the relay KF2 in parallel respectively; the AC contactor QA2 break contact and the indicator light PG4 are connected in series and then connected in parallel with the coil of the relay KF 2.
The second control unit comprises a coil of a relay KF1, a coil of an AC contactor QA1, a break contact of the relay KF2, a break contact of the relay KF1, a break contact of the AC contactor QA2, an indicator light PG1 and an indicator light PG 2.
One end of a dynamic break contact of the relay KF2 is connected to the dynamic break contact connecting point of the circuit breaker QA0 and the alternating current contactor QA1, the other end of the dynamic break contact of the relay KF2 is connected with a coil of the relay KF1 in series, and the other end of the coil of the relay KF1 is connected to the N end of the input power supply; one end of a relay KF1 dynamic on-off contact is connected to the connecting point of a breaker QA0 and an alternating current contactor QA1 dynamic off-off contact, the other end of the relay KF1 dynamic on-off contact is sequentially connected with an alternating current contactor QA2 dynamic on-off contact and an alternating current contactor QA1 coil in series, and the other end of the alternating current contactor QA1 coil is connected to the N end of the input power supply; the indicator light PG1 is connected in parallel with the coil of the ac contactor QA1, and the indicator light PG2 is connected in parallel with the moving contact of the series-connected ac contactor QA2 and the coil of the ac contactor QA 1.
The invention is a fixed dual-output power supply which is composed of devices such as a low-voltage electric control element, a transformer, an indicator light and the like with low price, and the dual-output power supply has the following advantages: single input and double output; whether the input power supply voltage is 110V or 220V can be automatically recognized; the voltage of the two output sides of the transformer can be automatically selected to be 110V and 220V respectively according to the power supply voltage so as to ensure that the two output sides of the transformer are fixed to be 220V and 110V respectively no matter the input power supply voltage is 220V or 110V; the relay coil does not bear instantaneous high voltage; when the movable contact of the AC contactor QA2 is adhered, the power supply is automatically cut off and the alarm is given, and when the movable contact of the AC contactor QA2 is adhered, the alarm is given by the indicator light.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a circuit diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, the fixed dual-output power supply capable of automatically identifying input voltage comprises a main circuit and a control circuit, wherein the main circuit comprises an input power supply, a breaker QA0, a break contact of an alternating current contactor QA1, an output path unit i and an output path unit ii; one end of a breaker QA0 is connected with the L end of an input power supply, the other end of the breaker QA0 is connected with the break contact of an alternating current contactor QA1 in series, and an output path unit I and an output path unit II are respectively connected with the break contact of the alternating current contactor QA 1; the input end of the control circuit is connected to the connecting point of the QA0 breaker and the QA1 breaking contact, and the output end of the control circuit is connected to the N end of the input power supply.
Specifically, the output path unit i comprises a movable contact of an ac contactor QA2, a fuse FA1, a fuse FA2, a transformer TA, an output port i and an output port ii.
One end of a movable contact of an alternating current contactor QA2 is connected with a movable contact of an alternating current contactor QA1, the other end of the movable contact of the alternating current contactor QA2 is divided into two paths, one path is connected with one end of a fuse FA1 on the U1 side of the transformer TA after being connected in series, and the other path is connected with the L1 end of an output port I; the other end of the transformer TA at the U1 side is connected with the N end of the input power supply, and the N end of the input power supply is connected with the N end of the output port I; the L1 end, the N end and the XE end of the output port I form a 110V output port.
One end of the transformer TA at the U2 side is connected with the L2 end of the output port II after passing through a fuse FA2, the other end of the transformer TA at the U2 side is connected with the N end of the input power supply, and the N end of the input power supply is connected with the N end of the output port II; and the L2 end, the N end and the XE end of the output port II form a 220V output port.
The output access unit II comprises a break contact of the AC contactor QA2, a fuse FA1, a fuse FA2, a transformer TA, an output port I and an output port II.
One end of a dynamic break contact of the AC contactor QA2 is connected with a dynamic break contact of the AC contactor QA1, the other end of the dynamic break contact of the AC contactor QA2 is divided into two paths, one path is connected with one end of the U2 side of the transformer TA after being connected with the fuse FA2 in series, and the other path is connected with the L2 end of the output port II; the other end of the transformer TA at the U2 side is connected with the N end of the input power supply, the N end of the input power supply is connected with the N end of the output port II, and the L2 end, the N end and the XE end of the output port II form a 220V output port.
One end of the transformer TA at the U1 side is connected with the L1 end of the output port I after passing through the fuse FA1, the other end of the transformer TA at the U1 side is connected with the N end of the input power supply, the N end of the input power supply is connected with the N end of the output port I, and the L1 end, the N end and the XE end of the output port I form a 110V output port.
The control circuit comprises a first control unit and a second control unit, wherein the first control unit comprises a relay KF1 break contact, a button SF1, an AC contactor QA2 coil, a relay KF2 coil, a relay KF2 break contact, an AC contactor QA2 break contact, an indicator light PG3 and an indicator light PG 4.
One end of a relay KF1 break contact is connected to the connecting point of a breaker QA0 and an AC contactor QA1 break contact, the other end of the relay KF1 break contact is sequentially connected with a button SF1 and a relay KF2 coil in series, and the other end of the relay KF2 coil is connected to the N end of an input power supply; the relay KF2 movable contact is connected with the button SF1 in parallel, and the coil of the AC contactor QA2 and the indicating lamp PG3 are connected with the coil of the relay KF2 in parallel respectively; the AC contactor QA2 break contact and the indicator light PG4 are connected in series and then connected in parallel with the coil of the relay KF 2.
And the second control unit comprises a relay KF1 coil, an AC contactor QA1 coil, a relay KF2 open contact, a relay KF1 closed contact, an AC contactor QA2 closed contact, an indicator lamp PG1 and an indicator lamp PG 2.
One end of a relay KF2 break contact is connected to the connecting point of the breaker QA0 and the AC contactor QA1 break contact, the other end of the relay KF2 break contact is connected with a relay KF1 coil in series, and the other end of the relay KF1 coil is connected to the N end of the input power supply; one end of a relay KF1 dynamic on-off contact is connected to the connecting point of a breaker QA0 and an alternating current contactor QA1 dynamic off-off contact, the other end of the relay KF1 dynamic on-off contact is sequentially connected with an alternating current contactor QA2 dynamic on-off contact and an alternating current contactor QA1 coil in series, and the other end of the alternating current contactor QA1 coil is connected to the N end of the input power supply; the indicator light PG1 is connected in parallel with the coil of the ac contactor QA1, and the indicator light PG2 is connected in parallel with the moving contact of the series-connected ac contactor QA2 and the coil of the ac contactor QA 1.
In the invention, the rated voltage of the U2 side of the transformer TA is 220V, and the rated voltage of the U1 side is 110V; rated voltages of a coil of the relay KF1 and a coil of the AC contactor QA1 are both 220V, rated voltages of a coil of the relay KF2 and a coil of the AC contactor QA2 are both 110V, and rated voltages of the indicator light PG1 and the indicator light PG2 are both 220V; the rated voltage of indicator light PG3 and indicator light PG4 are both 110V.
The using method comprises the following steps:
after the circuit breaker QA0 is closed, the button SF1 is pressed to obtain voltages of 220V and 110V at two output ends. The specific working process of the circuit is as follows:
when the voltage between the two points L, N is 220V, i.e. the input power supply voltage is 220V:
the coil of the relay KF1 is electrified, the make contact KF1 is closed, the indicator light PG2 is electrified and lighted, the break contact KF1 is disconnected, at the moment, even if the button SF1 is pressed, the coil of the relay KF2, the coil of the AC contactor QA2, the indicator light PG3 and the indicator light PG4 are not electrified, the 220V input power supply voltage is input from the U2 side of the transformer TA, and the voltage of the U2 side and the voltage of the U1 side of the transformer TA are respectively fixed to be 220V and 110V.
When the voltage between the two points L, N is 110V, i.e. the input power voltage is 110V:
the coil of the relay KF2 is electrified, the break contact KF2 is disconnected, the coil of the relay KF1 is not electrified, and the make contact KF2 is closed; indicator light PG3 lights up; the ac contactor QA2 coil is energized, and is opened at the open contact QA2 in the control circuit, and the open contact QA2 connected to the main circuit is opened and the close contact QA2 is closed, and the 110V input power supply voltage is input from the U1 side of the transformer TA, and the U2 side voltage and the U1 side voltage of the transformer TA are fixed to 220V and 110V, respectively.
When the voltage between the two points L, N is 220V and the movable contact of the AC contactor QA2 is adhered, the indicator lamp PG1 warns, the coil of the AC contactor QA1 is electrified, one movable contact QA1 of the AC contactor QA1 connected to the main circuit is disconnected, the input power supply is automatically cut off, and the transformer is prevented from being burnt out due to the bearing of the high voltage of 440V.
When the voltage between the two points L, N is 110V and the break contact of the AC contactor QA2 is stuck, the indicator light PG4 warns that the voltage on the U2 side of the transformer TA is 110V, the voltage on the U1 side is 55V, and the voltages on the two sides of the transformer TA are both below the rated voltage and within the safety range, so that the input power supply does not need to be automatically cut off.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. A fixed dual-output power supply capable of automatically identifying input voltage is characterized in that: the intelligent control system comprises a main circuit and a control circuit, wherein the main circuit comprises an input power supply, a circuit breaker QA0, a break contact of an alternating current contactor QA1, an output path unit I and an output path unit II; one end of a breaker QA0 is connected with the L end of an input power supply, the other end of the breaker QA0 is connected with the break contact of an alternating current contactor QA1 in series, and an output path unit I and an output path unit II are respectively connected with the break contact of the alternating current contactor QA 1; the input end of the control circuit is connected to the connecting point of the QA0 breaker and the QA1 breaking contact of the alternating current contactor, and the output end of the control circuit is connected to the N end of the input power supply;
the control circuit comprises a first control unit and a second control unit, wherein the first control unit comprises a relay KF1 break contact, a button SF1, an AC contactor QA2 coil, a relay KF2 coil, a relay KF2 break contact, an AC contactor QA2 break contact, an indicator light PG3 and an indicator light PG 4;
one end of a relay KF1 break contact is connected to the connecting point of a breaker QA0 and an AC contactor QA1 break contact, the other end of the relay KF1 break contact is sequentially connected with a button SF1 and a relay KF2 coil in series, and the other end of the relay KF2 coil is connected to the N end of an input power supply; the relay KF2 movable contact is connected with the button SF1 in parallel, and the coil of the AC contactor QA2 and the indicating lamp PG3 are connected with the coil of the relay KF2 in parallel respectively; the AC contactor QA2 break contact and the indicator light PG4 are connected in series and then connected in parallel with the coil of the relay KF 2;
the second control unit comprises a relay KF1 coil, an AC contactor QA1 coil, a relay KF2 break contact, a relay KF1 make contact, an AC contactor QA2 make contact, an indicator lamp PG1 and an indicator lamp PG 2;
one end of a relay KF2 break contact is connected to the connecting point of the breaker QA0 and the AC contactor QA1 break contact, the other end of the relay KF2 break contact is connected with a relay KF1 coil in series, and the other end of the relay KF1 coil is connected to the N end of the input power supply; one end of a relay KF1 dynamic contact is connected to the connecting point of a breaker QA0 and an alternating current contactor QA1 dynamic contact, the other end of the relay KF1 dynamic contact is sequentially connected in series with an alternating current contactor QA2 dynamic contact and an alternating current contactor QA1 coil, and the other end of the alternating current contactor QA1 coil is connected to the N end of the input power supply; the indicator light PG1 is connected in parallel with the coil of the ac contactor QA1, and the indicator light PG2 is connected in parallel with the moving contact of the series-connected ac contactor QA2 and the coil of the ac contactor QA 1.
2. The fixed dual output power supply for automatically recognizing an input voltage according to claim 1, wherein: the output path unit I comprises a movable contact of an alternating current contactor QA2, a fuse FA1, a fuse FA2, a transformer TA, an output port I and an output port II;
one end of a movable contact of an alternating current contactor QA2 is connected with a movable contact of an alternating current contactor QA1, the other end of the movable contact of the alternating current contactor QA2 is divided into two paths, one path is connected with one end of a fuse FA1 on the U1 side of the transformer TA after being connected in series, and the other path is connected with the L1 end of an output port I; the other end of the transformer TA at the U1 side is connected with the N end of the input power supply, and the N end of the input power supply is connected with the N end of the output port I; an L1 end, an N end and an XE end of the output port I form a 110V output port;
one end of the transformer TA at the U2 side is connected with the L2 end of the output port II after passing through a fuse FA2, the other end of the transformer TA at the U2 side is connected with the N end of the input power supply, and the N end of the input power supply is connected with the N end of the output port II; and the L2 end, the N end and the XE end of the output port II form a 220V output port.
3. The fixed dual output power supply for automatically recognizing an input voltage according to claim 1, wherein: the output access unit II comprises a break contact of the AC contactor QA2, a fuse FA1, a fuse FA2, a transformer TA, an output port I and an output port II;
one end of a dynamic break contact of the AC contactor QA2 is connected with a dynamic break contact of the AC contactor QA1, the other end of the dynamic break contact of the AC contactor QA2 is divided into two paths, one path is connected with one end of the U2 side of the transformer TA after being connected with the fuse FA2 in series, and the other path is connected with the L2 end of the output port II; the other end of the transformer TA at the U2 side is connected with the N end of the input power supply, the N end of the input power supply is connected with the N end of the output port II, and the L2 end, the N end and the XE end of the output port II form a 220V output port;
one end of the transformer TA at the U1 side is connected with the L1 end of the output port I after passing through the fuse FA1, the other end of the transformer TA at the U1 side is connected with the N end of the input power supply, the N end of the input power supply is connected with the N end of the output port I, and the L1 end, the N end and the XE end of the output port I form a 110V output port.
4. A fixed dual output power supply automatically recognizing an input voltage according to claim 2 or 3, characterized in that: rated voltage of the transformer TA at the U2 side is 220V, and rated voltage of the transformer TA at the U1 side is 110V; rated voltages of a coil of the relay KF1 and a coil of the AC contactor QA1 are both 220V, rated voltages of a coil of the relay KF2 and a coil of the AC contactor QA2 are both 110V, and rated voltages of the indicator light PG1 and the indicator light PG2 are both 220V; the rated voltage of indicator light PG3 and indicator light PG4 are both 110V.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201656786U (en) * | 2010-03-11 | 2010-11-24 | 天水庆华电子科技有限公司 | 110V/220V dual-purpose power supply device |
| CN102545348A (en) * | 2011-09-29 | 2012-07-04 | 郭振华 | Zero-standby power consumption non-polarized safety charger circuit |
| CN102545349A (en) * | 2011-09-29 | 2012-07-04 | 郭振华 | Circuit of nonpolar safety charger |
| CN102545350A (en) * | 2011-09-29 | 2012-07-04 | 郭振华 | Circuit of nonpolar safety charger |
| CN102638069A (en) * | 2011-09-29 | 2012-08-15 | 郭振华 | Non-polar safe charger circuit |
| CN102751695A (en) * | 2012-07-20 | 2012-10-24 | 天津百利机电控股集团有限公司研究院 | Alarming protection device and alarming protection method for alternating-current contactor main contact adhesion |
| KR20130039817A (en) * | 2011-10-13 | 2013-04-23 | 에스케이이노베이션 주식회사 | Circuit for monitoring relay |
| CN205693392U (en) * | 2016-06-03 | 2016-11-16 | 淮安信息职业技术学院 | Automatically the charger circuit of accumulator polarity is identified |
| CN205880149U (en) * | 2016-06-08 | 2017-01-11 | 武汉合康智能电气有限公司 | Well power relay contact adhesion detection circuitry |
-
2018
- 2018-06-12 CN CN201810600948.9A patent/CN108808662B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201656786U (en) * | 2010-03-11 | 2010-11-24 | 天水庆华电子科技有限公司 | 110V/220V dual-purpose power supply device |
| CN102545348A (en) * | 2011-09-29 | 2012-07-04 | 郭振华 | Zero-standby power consumption non-polarized safety charger circuit |
| CN102545349A (en) * | 2011-09-29 | 2012-07-04 | 郭振华 | Circuit of nonpolar safety charger |
| CN102545350A (en) * | 2011-09-29 | 2012-07-04 | 郭振华 | Circuit of nonpolar safety charger |
| CN102638069A (en) * | 2011-09-29 | 2012-08-15 | 郭振华 | Non-polar safe charger circuit |
| KR20130039817A (en) * | 2011-10-13 | 2013-04-23 | 에스케이이노베이션 주식회사 | Circuit for monitoring relay |
| CN102751695A (en) * | 2012-07-20 | 2012-10-24 | 天津百利机电控股集团有限公司研究院 | Alarming protection device and alarming protection method for alternating-current contactor main contact adhesion |
| CN205693392U (en) * | 2016-06-03 | 2016-11-16 | 淮安信息职业技术学院 | Automatically the charger circuit of accumulator polarity is identified |
| CN205880149U (en) * | 2016-06-08 | 2017-01-11 | 武汉合康智能电气有限公司 | Well power relay contact adhesion detection circuitry |
Non-Patent Citations (1)
| Title |
|---|
| 一种基于智能识别的小功率无线充电系统设计;路静等;《集成电路应用》;20180430;第35卷(第4期);第32页-第35页 * |
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