CN201699597U - Multi-valued direct-current power circuit adopting capacitive voltage reduction - Google Patents
Multi-valued direct-current power circuit adopting capacitive voltage reduction Download PDFInfo
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- CN201699597U CN201699597U CN2010202246713U CN201020224671U CN201699597U CN 201699597 U CN201699597 U CN 201699597U CN 2010202246713 U CN2010202246713 U CN 2010202246713U CN 201020224671 U CN201020224671 U CN 201020224671U CN 201699597 U CN201699597 U CN 201699597U
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Abstract
The utility model relates to a multi-valued direct-current power circuit adopting capacitive voltage reduction, which comprises a first capacitor, a resistor, a first diode, a second diode, a second capacitor, a first stabilivolt and a second stabilivolt, and is characterized in that the resistor is connected with two ends of the first capacitor in parallel; one end of the first capacitor is connected with one end of an alternating current power supply, and the other end thereof is connected with the positive pole of the first diode and the negative pole of the second diode; the negative pole of the first diode is connected with the positive pole of the second capacitor and the positive pole of the first stabilivolt, the negative pole of the first stabilivolt is connected with the positive pole of the second stabilivolt; and the negative pole of the second stabilivolt, the negative pole of the second capacitor and the positive pole of the second stabilivolt are connected with the other end of the alternating current power supply. The multi-valued direct-current power circuit adopting capacitive voltage reduction can generate multi-valued direct-current voltage, and the working load current can reach about 120mA, therefore, the circuit can be widely applied to application circuits of instruments and singlechips.
Description
Technical field
The utility model relates to the many-valued DC power supply circuit of a kind of employing capacitance decompression, is specially adapted on instrument and the single-chip microcomputer application circuit.
Background technology
More existing instrument and single-chip microcomputer application circuit substantially all are by transformer 220V voltage to be dropped to the light current voltage range, carry out rectification then, voltage stabilizing output, it is the circuit complexity not only, and output voltage values is single, and volume of transformer is big, the energy consumption height improves the cost of product greatly.
Summary of the invention
In view of the deficiency of above-mentioned technology, the purpose of this utility model provides the many-valued DC power supply circuit of a kind of employing capacitance decompression, and this circuit can produce many-valued voltage by capacitance decompression and diode rectification.
The utility model adopts following scheme to realize: the many-valued DC power supply circuit of a kind of employing capacitance decompression, comprise first electric capacity, resistance, first diode, second diode, second electric capacity, first voltage-stabiliser tube and second voltage-stabiliser tube, it is characterized in that: described resistance is connected to the first electric capacity two ends, one end of described first electric capacity, one termination AC power, the other end is connected with the negative pole anodal and second diode of first diode; The negative pole of described first diode is connected with the positive pole anodal and first voltage-stabiliser tube of second electric capacity, the negative pole of described first voltage-stabiliser tube is connected with the positive pole of second voltage-stabiliser tube, and the negative pole of the negative pole of described second voltage-stabiliser tube, second electric capacity, the positive pole of second voltage-stabiliser tube are connected with the other end of AC power.
The capacitive reactance that the utility model utilizes electric capacity to produce under certain AC signal frequency limits maximum operating currenbt, and then dynamic assignment capacitor and load both end voltage.Circuit is simple, has omitted transformer, can produce many-valued voltage simultaneously, has use value preferably.
Description of drawings
Fig. 1 is the utility model circuit theory schematic diagram.
Fig. 2 is the embodiment circuit diagram that adopts 7805 regulator blocks.
Embodiment
As shown in Figure 1, the utility model provides a kind of employing capacitance decompression many-valued DC power supply circuit, comprise first capacitor C 1, resistance R 4, the first diode D1, the second diode D2, second capacitor C 2, the first voltage-stabiliser tube D3 and the second voltage-stabiliser tube D4, it is characterized in that: described resistance R 4 is connected to first capacitor C, 1 two ends, one end of described first capacitor C, 1 one termination AC power, the other end is connected with the negative pole anodal and the second diode D2 of the first diode D1; The negative pole of the described first diode D1 is connected with the positive pole anodal and the first voltage-stabiliser tube D3 of second capacitor C 2, the negative pole of the described first voltage-stabiliser tube D3 is connected with the positive pole of the second voltage-stabiliser tube D4, and the negative pole of the negative pole of the described second voltage-stabiliser tube D4, second capacitor C 2, the positive pole of the second voltage-stabiliser tube D4 are connected with the other end of AC power.
When the positive half cycle of AC power, AC power is by ac capacitor C1, diode D1 is to capacitor C 2 chargings, also puncture simultaneously voltage-stabiliser tube D3, make the A point voltage be stabilized in 12V, when the AC power negative half period, AC power is by diode D2, ac capacitor forms the loop, guarantees that ac capacitor C1 is not polarized.Capacitor C 2 is kept A point current potential 12V.This 12V voltage can form a stabilized voltage power supply for the voltage stabilizing circuit of rear end, please refer to Fig. 2, adopts voltage stabilizing circuit to adopt 7805 regulator blocks among Fig. 2, makes B point current potential be stabilized in 5V, has so promptly produced many-valued direct voltage.
The above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (3)
1. one kind is adopted the many-valued DC power supply circuit of capacitance decompression, comprise first electric capacity, resistance, first diode, second diode, second electric capacity, first voltage-stabiliser tube and second voltage-stabiliser tube, it is characterized in that: described resistance is connected to the first electric capacity two ends, one end of described first electric capacity, one termination AC power, the other end is connected with the negative pole anodal and second diode of first diode; The negative pole of described first diode is connected with the positive pole anodal and first voltage-stabiliser tube of second electric capacity, the negative pole of described first voltage-stabiliser tube is connected with the positive pole of second voltage-stabiliser tube, and the negative pole of the negative pole of described second voltage-stabiliser tube, second electric capacity, the positive pole of second voltage-stabiliser tube are connected with the other end of AC power.
2. the many-valued DC power supply circuit of employing capacitance decompression according to claim 1 is characterized in that: further comprise the three-terminal voltage-stabilizing circuit, the input of described three-terminal voltage-stabilizing circuit is connected with the negative pole of first diode.
3. according to the many-valued DC power supply circuit of the described employing capacitance decompression of claim 2, it is characterized in that: described three-terminal voltage-stabilizing circuit comprises 7805 regulator blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202246713U CN201699597U (en) | 2010-06-12 | 2010-06-12 | Multi-valued direct-current power circuit adopting capacitive voltage reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202246713U CN201699597U (en) | 2010-06-12 | 2010-06-12 | Multi-valued direct-current power circuit adopting capacitive voltage reduction |
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| Publication Number | Publication Date |
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| CN201699597U true CN201699597U (en) | 2011-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202246713U Expired - Fee Related CN201699597U (en) | 2010-06-12 | 2010-06-12 | Multi-valued direct-current power circuit adopting capacitive voltage reduction |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841623A (en) * | 2011-10-28 | 2012-12-26 | 南通天华和睿科技创业有限公司 | Three-terminal voltage-stabilizing integrated module of power supply circuit |
| CN103683942A (en) * | 2014-01-09 | 2014-03-26 | 惠州天能源科技有限公司 | Power converter |
| CN103715918A (en) * | 2014-01-09 | 2014-04-09 | 惠州天能源科技有限公司 | Digitally-controlled power converter |
| CN111459008A (en) * | 2020-01-04 | 2020-07-28 | 杨凤全 | Energy-saving environment-friendly AC/DC quartz clock and watch wall clock |
-
2010
- 2010-06-12 CN CN2010202246713U patent/CN201699597U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841623A (en) * | 2011-10-28 | 2012-12-26 | 南通天华和睿科技创业有限公司 | Three-terminal voltage-stabilizing integrated module of power supply circuit |
| CN103683942A (en) * | 2014-01-09 | 2014-03-26 | 惠州天能源科技有限公司 | Power converter |
| CN103715918A (en) * | 2014-01-09 | 2014-04-09 | 惠州天能源科技有限公司 | Digitally-controlled power converter |
| CN103683942B (en) * | 2014-01-09 | 2017-06-13 | 天宝电子（惠州）有限公司 | A kind of supply convertor |
| CN111459008A (en) * | 2020-01-04 | 2020-07-28 | 杨凤全 | Energy-saving environment-friendly AC/DC quartz clock and watch wall clock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20130612 |