CN103647456A - 9V boosting device for single cell of multimeter - Google Patents
9V boosting device for single cell of multimeter Download PDFInfo
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- CN103647456A CN103647456A CN201310694806.0A CN201310694806A CN103647456A CN 103647456 A CN103647456 A CN 103647456A CN 201310694806 A CN201310694806 A CN 201310694806A CN 103647456 A CN103647456 A CN 103647456A
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Abstract
The invention relates to a 9V boosting device for a single cell of a multimeter. The 9V boosting device for the single cell of the multimeter is characterized by comprising a 1.5 V battery, a complementary multivibrator and boost circuit, a negative feedback frequency stabilization circuit, a rectification and filtering voltage stabilizing circuit and a 9V direct current cathode output end VCC1; the complementary multivibrator and boost circuit is composed of a PNP (Positive-Negative-Positive) transistor VT1, NPN (Negative-Positive-Negative) transistor VT2, an inductance coil L1 and a resistor R1; the negative feedback frequency stabilization circuit is composed of a capacitor C1 and a resistor R2; the rectification and filtering voltage stabilizing circuit is composed of a switching diode D1, an electrolytic capacitor C1, a voltage stabilizing diode DW and a 9V direct current cathode output end VCC1. The 9V boosting device for the single cell of the multimeter is applicable to various pointer multimeters, has a simple circuit structure and utilizes fewer components, and boost circuit board can be directly arranged at the position of an original laminated cell of a pointer multimeter.
Description
Technical field
The invention belongs to application of electronic technology field, is about a kind of universal instrument single battery 9V increasing apparatus.
Background technology
Universal instrument is electrician, electronic technology worker's indispensable survey tool, and the height of universal instrument measuring resistance stops the laminated cell of 9V of common use or 15V.This laminated cell not only price is higher, and useful life is short especially, need to often change.Universal instrument single battery 9V increasing apparatus of the present invention is applicable to the small-sized DC stepup transformer that various pointer multimeters are used, it is example that the embodiment of the present invention be take booster circuit output 9V, this universal instrument single battery 9V increasing apparatus have circuit structure simple, use components and parts few, booster circuit plate can directly be placed in the position of pointer multimeter Central Plains laminated cell.
Below describe universal instrument single battery 9V increasing apparatus of the present invention related relevant technologies content in implementation process in detail.
Summary of the invention
Goal of the invention and beneficial effect: universal instrument is electrician, electronic technology worker's indispensable survey tool, the height of universal instrument measuring resistance stops the laminated cell of 9V of common use or 15V.This laminated cell not only price is higher, and useful life is short especially, need to often change.Universal instrument single battery 9V increasing apparatus of the present invention is applicable to the small-sized DC stepup transformer that various pointer multimeters are used, it is example that the embodiment of the present invention be take booster circuit output 9V, this universal instrument single battery 9V increasing apparatus have circuit structure simple, use components and parts few, booster circuit plate can directly be placed in the position of pointer multimeter Central Plains laminated cell.
Circuit working principle: universal instrument single battery 9V increasing apparatus is comprised of complementary multi-resonant oscillating circuit, booster circuit and rectification filtering voltage stabilizing circuit, and the frequency of oscillation of circuit is about 2KHz.The 1.5V powered battery of circuit in former pointer multimeter, operating current is about 9mA, the about 3mA of output current, the 9V voltage of booster circuit output can meet the high job requirement stopping of universal instrument.After NPN transistor VT2 conducting, the positive feedback effect of capacitor C 1, allow NPN transistor VT2 enter rapidly saturation region, then capacitor C 1 electric discharge reverse charging, rising along with the base potential of PNP transistor VT1, the base current of NPN transistor VT2 also reduces, electric current on inductance coil L1 constantly raises simultaneously, when reaching enough ambassador's NPN transistor VT2 and exit saturation condition, the rising of the collector potential of NPN transistor VT2, base stage raising current potential by the positive feedback by capacitor C 1 to PNP transistor VT1, this just allows PNP transistor VT1, NPN transistor VT2 gets back to cut-off region immediately.PNP transistor VT1 is conducting once again, and resistance R 1, capacitor C 1 are charged once again.
The circuit booster circuit of universal instrument single battery 9V increasing apparatus forms complementary multi-resonant oscillating circuit by NPN transistor VT1, PNP transistor VT2, inductance coil L1 is the load of complementary multi-resonant oscillating circuit, export higher pulse voltage and obtain high voltage direct current after switching diode D1 halfwave rectifier and electrochemical capacitor C2 filtering, again after zener diode DW voltage stabilizing, obtain 9V stable DC voltage, this booster circuit output voltage can replace 9V laminated cell.
Technical characterictic: universal instrument single battery 9V increasing apparatus, it comprises 1.5V battery, complementary multi-harmonic-oscillations and booster circuit, negative feedback frequency stabilization circuit, rectification filtering voltage stabilizing circuit, 9V direct current cathode output end VCC1, it is characterized in that: circuit anode VCC,
Complementary multi-harmonic-oscillations and booster circuit: it is by PNP transistor VT1, NPN transistor VT2, inductance coil L1 and resistance R 1 form, the base stage of PNP transistor VT1 is by resistance R 1 connection circuit ground GND, the collector electrode of PNP transistor VT1 connects the base stage of NPN transistor VT2, the anodal VCC of emitter connection circuit of PNP transistor VT1, the collector electrode of NPN transistor VT2 connects one end and negative feedback frequency stabilization circuit and the rectification filtering voltage stabilizing circuit of inductance coil L1, the anodal VCC of other end connection circuit of inductance coil L1, the emitter connection circuit ground GND of NPN transistor VT2,
Negative feedback frequency stabilization circuit: it is comprised of capacitor C 1 and resistance R 2, the collector electrode of a termination NPN transistor VT2 of capacitor C 1, one end of the other end connecting resistance R2 of capacitor C 1, the base stage of another termination PNP transistor VT1 of resistance R 2;
Rectification filtering voltage stabilizing circuit: it is comprised of switching diode D1, electrochemical capacitor C2 and voltage stabilizing didoe DW and 9V direct current cathode output end VCC1, the positive pole of switching diode D1 connects the collector electrode of NPN transistor VT2, the positive pole of the negative pole of the negative pole of switching diode D1 and voltage stabilizing didoe DW and electrochemical capacitor C2 meets 9V direct current cathode output end VCC1, the negative pole connection circuit ground GND of electrochemical capacitor C2, the positive pole of voltage stabilizing didoe DW connects the base stage of PNP transistor VT1;
The positive pole of 1.5V battery is connected with circuit anode VCC, and the negative pole of 1.5V battery is connected with circuit ground GND.
Accompanying drawing explanation
Accompanying drawing is the embodiment circuit working schematic diagram that the invention provides a universal instrument single battery 9V increasing apparatus.
Embodiment
According to universal instrument single battery 9V increasing apparatus circuit working schematic diagram shown in the drawings and accompanying drawing explanation, and according to annexation between components and parts in the each several part circuit described in summary of the invention, and the components and parts technical parameter described in execution mode requires and circuit production main points are implemented to realize the present invention, below in conjunction with embodiment, correlation technique of the present invention is further described.
The selection of components and parts and technical parameter
It is example that the embodiment of the present invention be take booster circuit output 9V:
VT1 is PNP transistor, and the model of selecting is 2SC9015;
VT2 is NPN transistor, and the model of selecting is 2SC9013;
D1 is switching diode, and selecting model is 1N4148;
DW is voltage stabilizing didoe, and voltage stabilizing value parameter is 9.5V, and power is 0.5W;
Resistance R 1～R2 all uses metalfilmresistor, and its resistance is 51K Ω;
C1 is electric capacity, and its capacity is 2200PF; C2 is electrochemical capacitor, and its capacity is 10 μ F/25V;
1.5V battery can be used No. 2 MnZn dry cells of 1 joint.
Circuit production main points, circuit debugging and using method
The making of inductance coil L1: make of the silicon steel sheet of transistor output transformer, the high strength enamelled wire that coil is 0.21mm with diameter, around 110 circles, requires to soak envelope protection against the tide with epoxy resin;
Because of the circuit structure of universal instrument single battery 9V increasing apparatus fairly simple, as long as the electronic devices and components performance of generally selecting is intact, and the components and parts annexation in accompanying drawing is welded to specifications, physical connection line and welding quality are after careful inspection is correct, and circuit of the present invention does not substantially need to carry out any debugging and can normally work;
If strengthen the driving power of circuit, suitable adjusting resistance R1, the value of inductance coil L1 and the wire diameter of high strength enamelled wire, and increase the multiplication factor of PNP transistor VT1 and NPN transistor VT2.
Claims (1)
1. a universal instrument single battery 9V increasing apparatus, it comprises 1.5V battery, complementary multi-harmonic-oscillations and booster circuit, negative feedback frequency stabilization circuit, rectification filtering voltage stabilizing circuit, 9V direct current cathode output end VCC1, it is characterized in that:
Described complementary multi-harmonic-oscillations and booster circuit are by PNP transistor VT1, NPN transistor VT2, inductance coil L1 and resistance R 1 form, the base stage of PNP transistor VT1 is by resistance R 1 connection circuit ground GND, the collector electrode of PNP transistor VT1 connects the base stage of NPN transistor VT2, the anodal VCC of emitter connection circuit of PNP transistor VT1, the collector electrode of NPN transistor VT2 connects one end and negative feedback frequency stabilization circuit and the rectification filtering voltage stabilizing circuit of inductance coil L1, the anodal VCC of other end connection circuit of inductance coil L1, the emitter connection circuit ground GND of NPN transistor VT2,
Described negative feedback frequency stabilization circuit is comprised of capacitor C 1 and resistance R 2, the collector electrode of a termination NPN transistor VT2 of capacitor C 1, one end of the other end connecting resistance R2 of capacitor C 1, the base stage of another termination PNP transistor VT1 of resistance R 2;
Described rectification filtering voltage stabilizing circuit is comprised of switching diode D1, electrochemical capacitor C2 and voltage stabilizing didoe DW and 9V direct current cathode output end VCC1, the positive pole of switching diode D1 connects the collector electrode of NPN transistor VT2, the positive pole of the negative pole of the negative pole of switching diode D1 and voltage stabilizing didoe DW and electrochemical capacitor C2 meets 9V direct current cathode output end VCC1, the negative pole connection circuit ground GND of electrochemical capacitor C2, the positive pole of voltage stabilizing didoe DW connects the base stage of PNP transistor VT1;
The positive pole of described 1.5V battery is connected with circuit anode VCC, and the negative pole of 1.5V battery is connected with circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310694806.0A CN103647456A (en) | 2013-12-17 | 2013-12-17 | 9V boosting device for single cell of multimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310694806.0A CN103647456A (en) | 2013-12-17 | 2013-12-17 | 9V boosting device for single cell of multimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103647456A true CN103647456A (en) | 2014-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310694806.0A Pending CN103647456A (en) | 2013-12-17 | 2013-12-17 | 9V boosting device for single cell of multimeter |
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| CN (1) | CN103647456A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006149111A (en) * | 2004-11-22 | 2006-06-08 | Matsushita Electric Ind Co Ltd | Rcc switching regulator for pdp drive circuit |
| CN102647089A (en) * | 2012-05-14 | 2012-08-22 | 洪珍 | 15V direct current booster device of pointer multimeter |
-
2013
- 2013-12-17 CN CN201310694806.0A patent/CN103647456A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006149111A (en) * | 2004-11-22 | 2006-06-08 | Matsushita Electric Ind Co Ltd | Rcc switching regulator for pdp drive circuit |
| CN102647089A (en) * | 2012-05-14 | 2012-08-22 | 洪珍 | 15V direct current booster device of pointer multimeter |
Non-Patent Citations (1)
| Title |
|---|
| 谢钊林: "效果良好的数字万用表代用电源", 《电子制作》 * |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140319 |