CN103227573A - Alternating-current voltage reduction micro-current supply circuit - Google Patents
Alternating-current voltage reduction micro-current supply circuit Download PDFInfo
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- CN103227573A CN103227573A CN2013101619300A CN201310161930A CN103227573A CN 103227573 A CN103227573 A CN 103227573A CN 2013101619300 A CN2013101619300 A CN 2013101619300A CN 201310161930 A CN201310161930 A CN 201310161930A CN 103227573 A CN103227573 A CN 103227573A
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Abstract
The invention discloses an alternating-current voltage reduction micro-current supply circuit which can provide an ideal, low-cost, low-power-consumption and more stable alternating-current voltage reduction micro-current power supply for some micro-current operating circuits. The micro-current supply circuit adopts a capacitive voltage reduction circuit with a low-capacity voltage reduction capacitor. Compared with the existing product, the micro-current supply circuit has the benefits that the micro-current supply circuit is extremely low in power consumption, is low in cost, has significant energy saving and environmental protection effects, and obvious advantages, is a new development for the prior art, expands an application field, and is a breakthrough.
Description
Technical field
The present invention relates to power circuit, particularly the little current and power supply circuit of civil power step-down.
Background technology
The present little electric current that utilizes the civil power step-down (being made as below 3 milliamperes) power supply circuits, as utilize the direct step-down of big resistance, utilize the controllable silicon step-down, because of resistance, controllable silicon (as utility model patent 201020222512) are not energy-storage travelling wave tubes, all exist oneself power consumption can not do very low shortcoming, be used for low-power consumption power circuit (especially integrated IC), even the situation of idle work (voltage drop element loss) greater than useful work (power circuit power consumption) can appear, can say it is not desirable little current suppling circuit.
In addition, present civil power capacitor voltage-dropping power supply circuit does not still have (may because need the cause of voltage-stabiliser tube voltage stabilizing) that little electric current (it is following to establish 3mA) is provided, do not give full play to capacitor voltage-dropping power supply circuit simply with the advantage that is particularly suitable for little electric current.
Summary of the invention
For low cost, low-power consumption, the more stable little current and power supply of civil power step-down being provided for some power circuit, and the application of further developing capacitor voltage-dropping power supply circuit, the invention provides a kind of comparatively ideal little electric current of civil power step-down (3mA is following) power circuit that utilizes capacitance decompression.
Realize that technical scheme of the present invention is: the little current suppling circuit of a kind of civil power step-down, comprise city's arrangements of electric connection, decompression capacitor, current-limiting resistance, absorb electric capacity (also claiming filter capacitor), voltage-stabiliser tube, rectification circuit, described rectification circuit is made up of rectifier diode or bridge heap, it is characterized in that: described decompression capacitor is the electric capacity of capacity below 0.1uF, described rectification circuit is a half-wave rectifying circuit, provide electric current below 3mA, perhaps, described decompression capacitor is the electric capacity of capacity below 0.05uF, described rectification circuit is a full-wave rectifying circuit, provides electric current below 3mA.
Little current suppling circuit of described capacitance decompression, electric current reduces half, power consumption then lowers 4 times, and energy-saving effect is very big, so under the situation that guarantees the power circuit operate as normal, little current value is the smaller the better, generally with below 1.5mA for well, more can embody the object of the invention, in fact, the IC operating current of general little electric current application circuit (as monitoring class circuit such as human body sensing IC, acousto-optic controls) all below 1mA, have in addition just can (as BISS001 type human body sensing IC) at tens microamperes.The said little electric current of this paper is defined in below the 3mA, mainly is in order better to realize the purpose of patent protection.
Little current suppling circuit of described capacitance decompression; with common capacitance decompression power supply circuits ratio; because electric current is little; a special advantage is to prevent surge current with the current-limiting resistance (being connected between decompression capacitor and the voltage-stabiliser tube circuit) of big resistance (as 1-15 kilo-ohm); need not to establish in addition protective circuit; and oneself power consumption is still very low, and cost of manufacture does not increase, and is particularly suitable for the producer that cost of manufacture is put in the first place.
The present invention compares with background technology, beneficial effect is: 1, with present little current circuit ratio, oneself power consumption very low (generally differing more than 10 times), energy-saving effect is remarkable, and cost of manufacture is also low, and circuit is stable, and technical advantage is very obvious, from energy-conservation aspect, can be described as at present even optimal little current and power supply in the future; 2, the present invention also is newly developed to prior art, has opened up application, has breakthrough meaning.
Description of drawings
1, Fig. 1 is a kind of capacitance decompression halfwave rectifier power circuit simplified schematic diagram of the present invention.
Embodiment
Capacitor voltage-dropping power supply circuit is a circuit common, realization of the present invention only needs to select suitable parameter to get final product to one of them or several element, be out of question so make, the producer can make little current suppling circuit of capacitance decompression half-wave or full-wave rectification, does not just speak more at this.Fig. 1 be a kind of my test can be used for human body sensing IC(LP8072c) the halfwave rectifier power circuit (just not drawn of all-wave) of the capacitance decompression of circuit, when decompression capacitor 1 capacity is got 0.047uF, the little electric current in the 0.0014A left and right sides can be provided, and (voltage is no more than the upper voltage limit near IC during standby, voltage after the induction is not less than the lower voltage limit of IC), current-limiting resistance 2 is got 10 kilo-ohms, this moment, filter capacitor 3 (had the effect that absorbs surge current concurrently, but losing this effect during the high-speed switch machine) value can littler (as 10uF), and the output control mode designs available photoelectricity by subsequent conditioning circuit (as load circuit), control modes such as clamper.Particularly point out; under little electric current (particularly at operating current) situation near power circuit; in fact voltage-stabiliser tube mainly plays the start divided current effect of moment; the electric current that flows through voltage-stabiliser tube during the work of circuit normality generally is not enough to puncture voltage-stabiliser tube; voltage-stabiliser tube can say and not work that this has also prolonged the voltage-stabiliser tube life-span greatly.
Claims (1)
1. little current suppling circuit of a capacitance decompression, comprise city's arrangements of electric connection, decompression capacitor, current-limiting resistance, absorption electric capacity, voltage-stabiliser tube, rectification circuit, described rectification circuit is made up of rectifier diode or bridge heap, it is characterized in that: described decompression capacitor is the electric capacity of capacity below 0.087uF, described rectification circuit is a half-wave rectifying circuit, provide electric current below 3mA, perhaps, described decompression capacitor is the electric capacity of capacity below 0.0435uF, described rectification circuit is a full-wave rectifying circuit, provides electric current below 3mA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101619300A CN103227573A (en) | 2013-05-06 | 2013-05-06 | Alternating-current voltage reduction micro-current supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101619300A CN103227573A (en) | 2013-05-06 | 2013-05-06 | Alternating-current voltage reduction micro-current supply circuit |
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| Publication Number | Publication Date |
|---|---|
| CN103227573A true CN103227573A (en) | 2013-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101619300A Pending CN103227573A (en) | 2013-05-06 | 2013-05-06 | Alternating-current voltage reduction micro-current supply circuit |
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| CN (1) | CN103227573A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105049962A (en) * | 2015-07-13 | 2015-11-11 | 成都弘毅天承科技有限公司 | Inductive wireless conversation device of intelligent household system based on Doppler effect |
| CN106329919A (en) * | 2016-09-05 | 2017-01-11 | 安徽中研电气有限责任公司 | Capacitor step-down power taking circuit using dynamic resistance |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2045557U (en) * | 1988-08-17 | 1989-10-04 | 中国电子进出口总公司深圳工贸公司工程开发部 | Auto-off switch device for light lamp |
| CN2077172U (en) * | 1990-05-08 | 1991-05-15 | 首旭 | Touching delay-action circduit breaker with display in room |
| CN2077617U (en) * | 1990-05-04 | 1991-05-22 | 首旭 | High-grade touch-type delay switch with display |
| CN2404228Y (en) * | 1999-12-02 | 2000-11-01 | 高彦兵 | Over-voltage automatic protecting socket |
| CN2601480Y (en) * | 2003-01-02 | 2004-01-28 | 曾郑刚 | Separated load series power supply circuit |
| CN1710769A (en) * | 2005-06-15 | 2005-12-21 | 陈晓余 | Garment vehicle idle power-off electricity-saving device |
| CN201298178Y (en) * | 2008-11-23 | 2009-08-26 | 三科电器有限公司 | Mainboard power supply circuit of automatic coupling voltage regulating type AC stabilized voltage power supply |
| CN202032520U (en) * | 2011-04-12 | 2011-11-09 | 上海土伦自动化控制技术有限公司 | Light-emitting diode (LED) lighting lamp circuit for refrigerator |
| CN203339973U (en) * | 2013-05-06 | 2013-12-11 | 陈军 | Micro-current power supply circuit using commercial power for voltage reduction |
-
2013
- 2013-05-06 CN CN2013101619300A patent/CN103227573A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2045557U (en) * | 1988-08-17 | 1989-10-04 | 中国电子进出口总公司深圳工贸公司工程开发部 | Auto-off switch device for light lamp |
| CN2077617U (en) * | 1990-05-04 | 1991-05-22 | 首旭 | High-grade touch-type delay switch with display |
| CN2077172U (en) * | 1990-05-08 | 1991-05-15 | 首旭 | Touching delay-action circduit breaker with display in room |
| CN2404228Y (en) * | 1999-12-02 | 2000-11-01 | 高彦兵 | Over-voltage automatic protecting socket |
| CN2601480Y (en) * | 2003-01-02 | 2004-01-28 | 曾郑刚 | Separated load series power supply circuit |
| CN1710769A (en) * | 2005-06-15 | 2005-12-21 | 陈晓余 | Garment vehicle idle power-off electricity-saving device |
| CN201298178Y (en) * | 2008-11-23 | 2009-08-26 | 三科电器有限公司 | Mainboard power supply circuit of automatic coupling voltage regulating type AC stabilized voltage power supply |
| CN202032520U (en) * | 2011-04-12 | 2011-11-09 | 上海土伦自动化控制技术有限公司 | Light-emitting diode (LED) lighting lamp circuit for refrigerator |
| CN203339973U (en) * | 2013-05-06 | 2013-12-11 | 陈军 | Micro-current power supply circuit using commercial power for voltage reduction |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105049962A (en) * | 2015-07-13 | 2015-11-11 | 成都弘毅天承科技有限公司 | Inductive wireless conversation device of intelligent household system based on Doppler effect |
| CN106329919A (en) * | 2016-09-05 | 2017-01-11 | 安徽中研电气有限责任公司 | Capacitor step-down power taking circuit using dynamic resistance |
| CN106329919B (en) * | 2016-09-05 | 2018-12-25 | 安徽中研电气有限责任公司 | Use the capacitance decompression power-supply circuit of dynamic electric resistor |
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Application publication date: 20130731 |