CN203481901U - Zero-load low-loss battery charging circuit - Google Patents
Zero-load low-loss battery charging circuit Download PDFInfo
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- CN203481901U CN203481901U CN201320526500.XU CN201320526500U CN203481901U CN 203481901 U CN203481901 U CN 203481901U CN 201320526500 U CN201320526500 U CN 201320526500U CN 203481901 U CN203481901 U CN 203481901U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
Provided is a zero-load low-loss battery charging circuit. The zero-load low-loss battery charging circuit comprises an EMI module, a charging interface module, a charging main control module, a charging processing module and an auxiliary power supply module, wherein the EMI module is used for filtering high frequency interference signals of an AC; the auxiliary power supply module is used for performing rectification step-down processing on the AC outputted by the EMI module so as to output a fist DC voltage to the charging main control module and output a second DC voltage to the charging processing module; and the charging processing module is used for detecting whether the charging interface module is connected with a battery and whether the battery is fully charged, when detecting that the charging interface module is connected with the battery, driving the charging main control module to receive the first DC voltage so as to enable the charging main control module to be at a working state, and when the battery is fully charged or it is not detected that the charging interface module is connected with the battery, closing the charging main control module. The zero-load low-loss battery charging circuit can substantially reduce zero-load loss, facilitates energy conservation and prolongs the service life of a charger.
Description
Technical field
The utility model relates to a kind of unloaded low-loss battery charger.
Background technology
Battery charger or adapter adopt the topological structure of inverse-excitation type conventionally, transformer comprises armature winding, secondary main winding and secondary auxiliary winding, generally there is secondary auxiliary winding to provide operating voltage to charger governor circuit, because secondary main winding and secondary auxiliary winding are same-phase, the proportional routine relation of the voltage of the two and the number of turn, for example, when the output voltage of secondary main winding is too low, the voltage of this secondary auxiliary winding is also low, make the operating voltage of charger governor circuit lower than rated voltage, thereby make charger governor circuit in guard mode, but in this state, charger governor circuit is still in work, still can expend electric weight.At present, for increasing output voltage range as 0 to 30V, often by increasing the number of turn of secondary main winding, realize, when unloaded (while not charging the battery), charger governor circuit is still worked and the secondary main winding of multiturn number all increases circuit loss greatly, is difficult to meet the unloaded low-loss industry standard of wide voltage of 90V-264V AC.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model is intended to provide a kind of unloaded low-loss battery charger of low-loss wide-voltage range output.
For achieving the above object, the utility model adopts following technical scheme:
A unloaded low-loss battery charger, it comprises EMI module, charging inlet module, charging main control module, charging process module and accessory power supply module;
This EMI module is for the high-frequency interferencing signal of filtering alternating current;
This accessory power supply module is carried out rectification step-down processing for the alternating current that this EMI module is exported, and to export the first direct voltage to this main control module that charges, and exports the second direct voltage to this charging process module;
This charging process module whether connects battery for detection of this charging inlet module and whether battery is full of, when charging inlet module connection battery being detected, this charging main control module of this charging process module drive receives this first direct voltage, so that this charging main control module is in running order; When battery is full of or charging inlet module connection battery do not detected, this charging process module is closed this charging main control module.
Further, this accessory power supply module comprises PWM chip, transformer, the first diode to the five diodes, the first resistance to the nine resistance, the first triode, voltage-stabiliser tube and the first electric capacity to the nine electric capacity, wherein, transformer comprises armature winding, secondary main winding and secondary auxiliary winding;
This EMI module of the anodic bonding of this first diode and the second diode, the negative electrode of this first diode and the second diode is by the first capacity earth, also by the second electric capacity, be connected the negative electrode of the 4th diode with the first resistance successively, also by the second resistance, connect the negative electrode of the 4th diode, the negative electrode of this first diode and the second diode is also connected the different name end of armature winding, the Same Name of Ends of this armature winding of anodic bonding of the 4th diode, the Same Name of Ends of this secondary main winding connects the anode of the 3rd diode, also by the 9th electric capacity, connect the negative electrode of the 3rd diode, the negative electrode of the 3rd diode is by the 5th electric capacity and the 6th capacity earth in parallel, the negative electrode of the 3rd diode also connects the collector electrode of this first triode, the 7th resistance is connected between the collector electrode and base stage of this first triode, the base stage of this first triode connects the negative electrode of this voltage-stabiliser tube, the emitter of this first triode is successively by the 8th resistance and the 9th grounding through resistance, the control end of this voltage-stabiliser tube is connected between the 8th resistance and the 9th resistance, the emitter of this first triode is also by the 7th electric capacity and the 8th capacity earth in parallel, the Same Name of Ends of this secondary auxiliary winding is successively by the 3rd resistance, the 4th resistance and the 5th grounding through resistance, the anodic bonding of the 5th diode is between the 3rd resistance and the 4th resistance, the negative electrode of the 5th diode is by the 3rd capacity earth, also by passing through successively the 6th resistance and the 4th capacity earth, the voltage end of this PWM chip is connected between the 6th resistance and the 4th electric capacity, and the output of this PWM chip is connected between the 4th resistance and the 5th resistance, and the drain electrode end of this PWM chip connects the anode of the 4th diode.
Further, this charging process module comprises the photophore of MCU, the 11 resistance to the 23 resistance, the tenth electric capacity to the 13 electric capacity, the 6th diode, the second triode, the 3rd triode, the 4th triode, the 5th triode, the 3rd field effect transistor and optocoupler; First of this MCU controls pin and by the 16 resistance, connects the grid of the 3rd field effect transistor, the drain electrode of the 3rd field effect transistor connects the positive charging terminal of this charging inlet module by the 15 resistance, the source electrode of the 3rd field effect transistor is by the 17 grounding through resistance, also, successively by the 11 resistance and the tenth capacity earth, the voltage detecting pin of this MCU is connected between the 11 resistance and the tenth electric capacity; This MCU second controls pin and by the 20 resistance, connects the base stage of the 4th triode, the base stage of the 4th triode is by the second grounding through resistance, the collector electrode that also connects the 5th triode, the grounded emitter of the 4th triode, the collector electrode of the 4th triode connects the negative electrode of this photophore, and the anode of this photophore is connected in the negative electrode of the 3rd diode of accessory power supply module by the 19 resistance; The grounded emitter of the 5th triode, the base stage of the 5th triode is by the 23 grounding through resistance; The power end of this MCU is connected in the emitter of the first triode of this accessory power supply module, also by the 11 capacity earth; The 3rd of this MCU controls pin and by the 12 electric capacity, is connected the base stage of the 3rd triode with the 12 resistance successively, the negative electrode of the 6th diode is connected between the 12 resistance and the 12 electric capacity, the base stage of this second triode is also by the 13 grounding through resistance, the collector electrode of this second triode is connected in the emitter of the first triode of this accessory power supply module by the 14 resistance, the grounded emitter of this second triode, the collector electrode of this second triode, by capacity earth, also connects the base stage of the 5th triode by the 21 resistance.
Further, this charging main control module comprises the light-receiving device of power management chip, the 6th triode, the 24 resistance to the 26 resistance and optocoupler; The power end of this power management chip connects the collector electrode of the 6th triode by the 25 resistance, the emitter of the 6th triode connects the negative electrode of the 5th diode of this accessory power supply module, the 24 resistance is connected between the emitter and base stage of the 6th triode, and the base stage of the 6th triode is by the 26 resistance and this light-receiving device ground connection.
Further, unloaded low-loss battery charger also comprises rectification module and transformer; This rectification module is converted to direct current for the alternating current that EMI module is exported; This transformer is used for the output current of this rectification module to be converted to charging current, and charging current is delivered to this charging inlet module under the adjusting of this charging main control module.
The beneficial effects of the utility model are as follows:
Above-mentioned utility model starts charging main control module when battery charges, and closes this charging main control module when battery is full of or there is no battery, so, the loss in the time of can greatly reducing zero load, be beneficial to energy-conservation, and useful life of prolongation charger.
Accompanying drawing explanation
Fig. 1 is the module diagram of the preferred embodiments of the unloaded low-loss battery charger of the utility model.
Fig. 2 is the circuit diagram of EMI module, rectification module, transformer, charging inlet module and the charging main control module of the battery charger of Fig. 1.
Fig. 3 is the circuit diagram of accessory power supply module of the battery charger of Fig. 1.
Fig. 4 is the circuit diagram of charging process module of the battery charger of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described further:
Refer to Fig. 1 to Fig. 4, the utility model relates to a kind of unloaded low-loss battery charger, and its preferred embodiments comprises EMI module 10, rectification module 20, transformer 30, charging inlet module 40, charging main control module 60, charging process module 80 and accessory power supply module 70.
This EMI module 10 is for the high-frequency interferencing signal of filtering alternating current.This rectification module 20 is for being converted to direct current by alternating current.This transformer 30 is applicable to for the output current of this rectification module 20 is converted to the charging current that battery 50 charges, and charging current is delivered to this charging inlet module 40 under the adjusting of this charging main control module 60.This charging inlet module 40 is for connecting battery 50, to provide charging current to battery 50.The structure of EMI module 10, rectification module 20, transformer 30 and charging inlet module 40 can be learnt by prior art, does not repeat them here.
This accessory power supply module 70 is carried out rectification step-down processing for the alternating current that this EMI module 10 is exported, and to export the first direct voltage to this charging main control module 60, and exports the second direct voltage to this charging process module 80.
Whether this charging process module 80 connects battery 50 for detection of this charging inlet module 20, when charging inlet module 20 connection battery 50 being detected, this charging process module 80 drives this charging main control module 60 to receive this first direct voltage, so that this charging main control module 60 is in running order.When charging inlet module 20 connection battery 50 not detected, this charging process module 80 is closed this charging main control module 60, to reduce no-load loss.
This accessory power supply module 70 comprises PWM(Pulse Width Modulation, pulse width modulation) chip U1, transformer T, diode D1 to diode D5, resistance R 1 to resistance R 9, triode Q1, voltage-stabiliser tube U2 and capacitor C 1 to capacitor C 9, wherein, transformer T comprises armature winding Ta, secondary main winding Tb1 and secondary auxiliary winding Tb2.
This EMI module 10 of the anodic bonding of this diode D1 and diode D2, the negative electrode of this diode D1 and diode D2 is by capacitor C 1 ground connection, also by capacitor C 2, be connected the negative electrode of this diode D4 with resistance R 1 successively, also by resistance R 2, connect the negative electrode of diode D4, the negative electrode of this diode D1 and diode D2 is also connected the different name end of armature winding Ta, the Same Name of Ends of this armature winding of anodic bonding Ta of this diode D4.The Same Name of Ends of this secondary main winding Tb1 connects the anode of this diode D3, also by capacitor C 9, connect the negative electrode of this diode D3, the negative electrode of this diode D3 is by capacitor C in parallel 5 and capacitor C 6 ground connection, the negative electrode of this diode D3 also connects the collector electrode of this triode Q1, this resistance R 7 is connected between the collector electrode and base stage of this triode Q1, the base stage of this triode Q1 connects the negative electrode of this voltage-stabiliser tube U2, the emitter of this triode Q1 is successively by resistance R 8 and resistance R 9 ground connection, the control end of this voltage-stabiliser tube U2 is connected between this resistance R 8 and this resistance R 9, the emitter of this triode Q1 is also by capacitor C in parallel 7 and capacitor C 8 ground connection.The Same Name of Ends of this secondary auxiliary winding Tb2 is successively by resistance R 3, resistance R 4 and resistance R 5 ground connection, the anodic bonding of this diode D5 is between this resistance R 3 and this resistance R 4, the negative electrode of this diode D5 is by capacitor C 3 ground connection, also by passing through successively resistance R 6 and these capacitor C 4 ground connection.The voltage end VCC of this PWM chip U1 is connected between this resistance R 6 and this capacitor C 4, and the output CS of this PWM chip U1 is connected between this resistance R 4 and this resistance R 5, and the drain electrode end D of this PWM chip U2 connects the anode of this diode D4.
Above-mentioned diode D1 and diode D2 form rectification unit, and capacitor C 1 to capacitor C 8 is filter capacitor.The negative electrode of diode D5 is for exporting above-mentioned the first direct voltage 17V as shown in FIG..The emitter of the negative electrode of diode D3 and triode Q1 is for exporting above-mentioned the second direct voltage 12V and 5V as shown in FIG..
This charging process module 80 comprises MCU 82, the resistance R 11 photophore U4A to resistance R 23, capacitor C 10 to capacitor C 13, triode Q2, triode Q4, triode Q5, field effect transistor Q3 and optocoupler.
First of this MCU 82 controls pin Cg and by resistance R 16, connects the grid of field effect transistor Q3, the drain electrode of this field effect transistor Q3 connects the positive charging terminal B+ of this charging inlet module 40 by resistance R 15, the source electrode of this field effect transistor Q3 is by resistance R 17 ground connection, also, successively by resistance R 11 and capacitor C 10 ground connection, the voltage detecting pin Vs of this MCU 82 is connected between resistance R 11 and this capacitor C 10.This MCU 82 second controls pin Cgc by the base stage of resistance R 20 connecting triode Q4, the base stage of this triode Q4 is by resistance R 2 ground connection, the collector electrode that also connects this triode Q5, the grounded emitter of this triode Q4, the collector electrode of this triode Q4 connects the negative electrode of this photophore U4A, and the anode of this photophore U4A is connected in the negative electrode of the diode D3 of accessory power supply module 70 by resistance R 19.The grounded emitter of this triode Q5, the base stage of this triode Q5 is by resistance R 23 ground connection.The power end VDD of this MCU 82 is connected in the emitter of the triode Q1 of this accessory power supply module 70, also by capacitor C 11 ground connection.The 3rd of this MCU 82 controls pin Pr and by capacitor C 12, is connected the base stage of this triode Q2 with resistance R 12 successively, the negative electrode of this diode D6 is connected between this resistance R 12 and this capacitor C 12, the base stage of this triode Q2 is also by resistance R 13 ground connection, the collector electrode of this triode Q2 is connected in the emitter of the triode Q1 of this accessory power supply module 70 by resistance R 14, the grounded emitter of this triode Q2, the collector electrode of this triode Q2, by capacity earth, also connects the base stage of this triode Q5 by resistance R 21.
This charging main control module 60 comprises that power management chip U6, triode Q6, resistance R 24 are to the light-receiving device U4B of resistance R 26 and optocoupler.
The power end VDD of this power management chip U6 connects the collector electrode of this triode Q6 by resistance R 25, the emitter of this triode Q6 connects the negative electrode of the diode D5 of this accessory power supply module 70, this resistance R 24 is connected between the emitter and base stage of this triode Q6, and the base stage of this triode Q6 is by resistance R 26 and this light-receiving device U4B ground connection.
Below the groundwork principle of preferred embodiments of the present utility model is described:
When charger connects AC power supplies as civil power, alternating current is removed after high-frequency interferencing signal by EMI module 10, via diode D1, diode D2 and capacitor C 1 rectifying and wave-filtering, be treated to main direct voltage, this main direct voltage is delivered to the armature winding Ta of transformer T, by secondary main winding Tb1 and secondary auxiliary winding Tb2, be divided into two branch road direct currents respectively again, the galvanic large I of two branch roads is by regulating the turn ratio of armature winding Ta, secondary main winding Tb1 and secondary auxiliary winding Tb2 to regulate.The first branch road direct current is converted to above-mentioned the first direct voltage as 17V under the control of PWM chip U1, and this first direct voltage is delivered to the emitter of the triode Q6 of this charging main control module 60.After the processing of circuit that the second branch road direct current consists of triode Q1, diode D3 and voltage-stabiliser tube U2, form above-mentioned the second direct voltage as 12V and 5V.
This charging process module 80 is by this second DC-voltage supply, during this MCU 82 normal operation, its the first control pin Cg keeps output high level signal, so that this field effect transistor Q3 keeps conducting, when battery 50 this charging inlet module 40 of access, the positive charging terminal B+ of this charging inlet module 40 sends a detection signal to the voltage detecting pin Vs of this MCU80 by this field effect transistor Q3, this MCU 82 sends a high level signal according to this detection signal by its second control pin Cgc, during due to this MCU 82 normal operation, its the 3rd control pin Pr keeps output pulse signal, make triode Q2 and triode Q5 remain off, so, triode Q4 conducting, make this photophore U4A conducting luminous, and then make the light-receiving device U4B conducting of this charging main control module 60, thereby make this triode Q6 conducting, so, the first direct voltage that accessory power supply module 70 is exported can be supplied with this power management chip U6 by this triode Q6, so that this power management chip U6 work, thereby the main control module 60 that makes to charge regulates the armature winding voltage and current of transformers 30, these Principles of Regulation can be known from prior art, do not repeat them here.
When battery 50 was full of or during being connected of disconnection and charging inlet module 40, this MCU 82 sends low level signal by the second control pin Cgc, make this triode Q4 cut-off, and then make photophore U4A cut-off, thereby make light-receiving device U4B cut-off, triode Q6 cut-off, so, can make this power management chip U6 quit work, the loss in the time of can greatly reducing zero load, be beneficial to energy-conservationly, and extend useful life of charger.
For a person skilled in the art, can make other various corresponding changes and distortion according to technical scheme described above and design, and these all changes and distortion all should belong to the protection range of the utility model claim within.
Claims (5)
1. a unloaded low-loss battery charger, is characterized in that: it comprises EMI module, charging inlet module, charging main control module, charging process module and accessory power supply module; This EMI module is for the high-frequency interferencing signal of filtering alternating current;
This accessory power supply module is carried out rectification step-down processing for the alternating current that this EMI module is exported, and to export the first direct voltage to this main control module that charges, and exports the second direct voltage to this charging process module;
This charging process module whether connects battery for detection of this charging inlet module and whether battery is full of, when charging inlet module connection battery being detected, this charging main control module of this charging process module drive receives this first direct voltage, so that this charging main control module is in running order; When battery is full of or charging inlet module connection battery do not detected, this charging process module is closed this charging main control module.
2. unloaded low-loss battery charger as claimed in claim 1, it is characterized in that: this accessory power supply module comprises PWM chip, transformer, the first diode to the five diodes, the first resistance to the nine resistance, the first triode, voltage-stabiliser tube and the first electric capacity to the nine electric capacity, wherein, transformer comprises armature winding, secondary main winding and secondary auxiliary winding;
This EMI module of the anodic bonding of this first diode and the second diode, the negative electrode of this first diode and the second diode is by the first capacity earth, also by the second electric capacity, be connected the negative electrode of the 4th diode with the first resistance successively, also by the second resistance, connect the negative electrode of the 4th diode, the negative electrode of this first diode and the second diode is also connected the different name end of armature winding, the Same Name of Ends of this armature winding of anodic bonding of the 4th diode, the Same Name of Ends of this secondary main winding connects the anode of the 3rd diode, also by the 9th electric capacity, connect the negative electrode of the 3rd diode, the negative electrode of the 3rd diode is by the 5th electric capacity and the 6th capacity earth in parallel, the negative electrode of the 3rd diode also connects the collector electrode of this first triode, the 7th resistance is connected between the collector electrode and base stage of this first triode, the base stage of this first triode connects the negative electrode of this voltage-stabiliser tube, the emitter of this first triode is successively by the 8th resistance and the 9th grounding through resistance, the control end of this voltage-stabiliser tube is connected between the 8th resistance and the 9th resistance, the emitter of this first triode is also by the 7th electric capacity and the 8th capacity earth in parallel, the Same Name of Ends of this secondary auxiliary winding is successively by the 3rd resistance, the 4th resistance and the 5th grounding through resistance, the anodic bonding of the 5th diode is between the 3rd resistance and the 4th resistance, the negative electrode of the 5th diode is by the 3rd capacity earth, also by passing through successively the 6th resistance and the 4th capacity earth, the voltage end of this PWM chip is connected between the 6th resistance and the 4th electric capacity, and the output of this PWM chip is connected between the 4th resistance and the 5th resistance, and the drain electrode end of this PWM chip connects the anode of the 4th diode.
3. unloaded low-loss battery charger as claimed in claim 2, is characterized in that: this charging process module comprises the photophore of MCU, the 11 resistance to the 23 resistance, the tenth electric capacity to the 13 electric capacity, the 6th diode, the second triode, the 3rd triode, the 4th triode, the 5th triode, the 3rd field effect transistor and optocoupler; First of this MCU controls pin and by the 16 resistance, connects the grid of the 3rd field effect transistor, the drain electrode of the 3rd field effect transistor connects the positive charging terminal of this charging inlet module by the 15 resistance, the source electrode of the 3rd field effect transistor is by the 17 grounding through resistance, also, successively by the 11 resistance and the tenth capacity earth, the voltage detecting pin of this MCU is connected between the 11 resistance and the tenth electric capacity; This MCU second controls pin and by the 20 resistance, connects the base stage of the 4th triode, the base stage of the 4th triode is by the second grounding through resistance, the collector electrode that also connects the 5th triode, the grounded emitter of the 4th triode, the collector electrode of the 4th triode connects the negative electrode of this photophore, and the anode of this photophore is connected in the negative electrode of the 3rd diode of accessory power supply module by the 19 resistance; The grounded emitter of the 5th triode, the base stage of the 5th triode is by the 23 grounding through resistance; The power end of this MCU is connected in the emitter of the first triode of this accessory power supply module, also by the 11 capacity earth; The 3rd of this MCU controls pin and by the 12 electric capacity, is connected the base stage of the 3rd triode with the 12 resistance successively, the negative electrode of the 6th diode is connected between the 12 resistance and the 12 electric capacity, the base stage of this second triode is also by the 13 grounding through resistance, the collector electrode of this second triode is connected in the emitter of the first triode of this accessory power supply module by the 14 resistance, the grounded emitter of this second triode, the collector electrode of this second triode, by capacity earth, also connects the base stage of the 5th triode by the 21 resistance.
4. unloaded low-loss battery charger as claimed in claim 3, is characterized in that: this charging main control module comprises the light-receiving device of power management chip, the 6th triode, the 24 resistance to the 26 resistance and optocoupler; The power end of this power management chip connects the collector electrode of the 6th triode by the 25 resistance, the emitter of the 6th triode connects the negative electrode of the 5th diode of this accessory power supply module, the 24 resistance is connected between the emitter and base stage of the 6th triode, and the base stage of the 6th triode is by the 26 resistance and this light-receiving device ground connection.
5. unloaded low-loss battery charger as claimed in claim 1, is characterized in that: battery charger also comprises rectification module and transformer; This rectification module is converted to direct current for the alternating current that EMI module is exported; This transformer is used for the output current of this rectification module to be converted to charging current, and charging current is delivered to this charging inlet module under the adjusting of this charging main control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320526500.XU CN203481901U (en) | 2013-08-27 | 2013-08-27 | Zero-load low-loss battery charging circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320526500.XU CN203481901U (en) | 2013-08-27 | 2013-08-27 | Zero-load low-loss battery charging circuit |
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| CN203481901U true CN203481901U (en) | 2014-03-12 |
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| CN201320526500.XU Expired - Fee Related CN203481901U (en) | 2013-08-27 | 2013-08-27 | Zero-load low-loss battery charging circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475074A (en) * | 2013-08-27 | 2013-12-25 | 崧顺电子（深圳）有限公司 | No-load low-loss battery charging circuit |
| CN109327061A (en) * | 2018-11-30 | 2019-02-12 | 中山市奥东电子科技有限公司 | A kind of battery feed circuit |
| CN109391162A (en) * | 2017-08-04 | 2019-02-26 | 广东金莱特电器股份有限公司 | Low-power consumption AC-DC conversion switch circuit |
-
2013
- 2013-08-27 CN CN201320526500.XU patent/CN203481901U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475074A (en) * | 2013-08-27 | 2013-12-25 | 崧顺电子（深圳）有限公司 | No-load low-loss battery charging circuit |
| CN103475074B (en) * | 2013-08-27 | 2016-01-20 | 崧顺电子（深圳）有限公司 | Unloaded low-loss battery charger |
| CN109391162A (en) * | 2017-08-04 | 2019-02-26 | 广东金莱特电器股份有限公司 | Low-power consumption AC-DC conversion switch circuit |
| CN109327061A (en) * | 2018-11-30 | 2019-02-12 | 中山市奥东电子科技有限公司 | A kind of battery feed circuit |
| CN109327061B (en) * | 2018-11-30 | 2024-03-15 | 中山市奥东电子科技有限公司 | Battery power supply circuit |
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