CN103578669A - Adjustable one-way resistor - Google Patents
Adjustable one-way resistor Download PDFInfo
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- CN103578669A CN103578669A CN201310571139.7A CN201310571139A CN103578669A CN 103578669 A CN103578669 A CN 103578669A CN 201310571139 A CN201310571139 A CN 201310571139A CN 103578669 A CN103578669 A CN 103578669A
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- adjustable potentiometer
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Abstract
The invention discloses an adjustable one-way resistor, and relates to an adjustable resistor. The resistor comprises a housing, an adjustable potentiometer, a first PN junction, a second PN junction and a third PN junction which are positioned in the housing, and a current input terminal and two current output terminals which are positioned outside the housing, wherein the adjustable potentiometer is provided with a moving contact end and two fixed ends; an anode end of the first PN junction is connected with the current input terminal; a cathode end of the first PN junction is connected with one fixed end of the adjustable potentiometer; an anode end of the second PN junction is connected with the moving contact end of the adjustable potentiometer; a cathode end of the second PN junction is connected with one current output terminal; an anode end of the third PN junction is connected with the other fixed end of the adjustable potentiometer; a cathode end of the third PN junction is connected with the other current output terminal. The resistor can realize one-way conduction; the problem that electronic and electrical equipment is damaged due to contraflow of branches of other power supplies can be solved; the resistor is simple in structure, low in price, stable in performance and extensive in application, can serve as an element of a precise integrated circuit of the electronic and electrical equipment, and can also serve as a circuit regulating element and a voltage stabilizing diode.
Description
Technical field
The present invention relates to a kind of adjustable resistor, particularly a kind of adjustable unidirectional resistor.
Background technology
Adjustable resistor mainly contains two stiff ends and a movable contact end composition at present, by manual adjustments rotating shaft or sliding handle, change the position of moving contact on resistive element and change the resistance value between movable contact end and any stiff end, thereby changed the size of voltage and electric current.Can bi directional conductibility due to two stiff ends of this adjustable resistor and movable contact end, easily make that other power branch is counter to flow, cause electronics and electric equipment to damage.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of adjustable unidirectional resistor is provided, can bi directional conductibility to solve two stiff ends of existing adjustable resistor and movable contact end, and easily make other power branch play a reversed role, the problem that causes electronics and electric equipment to damage.
The technical scheme solving the problems of the technologies described above is: a kind of adjustable unidirectional resistor, comprise housing, be positioned at adjustable potentiometer, the first PN junction, the second PN junction, the 3rd PN junction of housing, be positioned at current input terminal outside housing, two current output terminal, described adjustable potentiometer is provided with movable contact end, two stiff ends, the first described PN junction anode tap connects current input terminal, and the first PN junction cathode terminal connects the stiff end of adjustable potentiometer; The second described PN junction anode tap connects the movable contact end of adjustable potentiometer, and the second PN junction cathode terminal connects current output terminal; The 3rd described PN junction anode tap connects another stiff end of adjustable potentiometer, and the 3rd PN junction cathode terminal connects another current output terminal.
Further technical scheme of the present invention is: the seal casinghousing of described housing for adopting insulating material to make.
Owing to adopting said structure, the present invention's a kind of adjustable unidirectional resistor compared with prior art, has following beneficial effect:
1. can avoid the problem of playing a reversed role and causing electronics and electric equipment to damage because of power branch:
Owing to the present invention includes housing, be positioned at adjustable potentiometer, the first PN junction, the second PN junction, the 3rd PN junction of housing, and adjustable potentiometer is provided with movable contact end, two stiff ends, by the movable contact end of adjustable potentiometer is slided to two stiff end both sides, can change the resistance value between movable contact end and any stiff end, i.e. the size of adjustable voltage and electric current.Simultaneously, due to the effect of three PN junctions, the sense of current can only flow to respectively two current output terminal from current input terminal, and when other power branch is anti-while flowing to electric current fixed terminal, the negative electrode of second and third PN junction plays cut-off state, stops that electric current is counter to flow.Therefore, the present invention can realize unidirectional conduction, and having solved existing adjustable resistor can bi directional conductibility because of two stiff ends and movable contact end, easily makes that other power branch is counter to flow, the problem that causes electronics and electric equipment to damage.
Simple in structure, size is little, lightweight, cheap and stable performance; Be subject to environmental factor (as temperature, humidity, the interference of electromagnetic field etc.) to affect little.
3. the present invention is of many uses, can be used as the element of the accurate integrated circuit of electronic and electrical equipment, also can be used as circuit adjustment element and voltage stabilizing didoe and uses.
Below, in conjunction with the accompanying drawings and embodiments the technical characterictic of a kind of adjustable unidirectional resistor of the present invention is further described.
Accompanying drawing explanation
Fig. 1: the circuit diagram of a kind of adjustable unidirectional resistor of the present invention.
In figure:
1-housing, 2-adjustable potentiometer, 2a-movable contact end, 2b, 2c stiff end.
3-the first PN junction, 4-the second PN junction, 5-the 3rd PN junction,
6-current input terminal, 7,8-current output terminal.
Embodiment
Embodiment mono-:
A kind of adjustable unidirectional resistor (circuit diagram is referring to Fig. 1), comprise housing 1, comprise housing 1, be positioned at adjustable potentiometer 2, the first PN junction 3, the second PN junction 4, the 3rd PN junction 5 of housing 1, be positioned at current input terminal outside housing 16, two current output terminal 7,8.
The seal casinghousing of described housing 1 for adopting insulating material to make; Described adjustable potentiometer 2 is provided with movable contact end 2a, two stiff end 2b, 2c, and the first described PN junction 3 anode taps connect the stiff end 2b that current input terminal 6, the first PN junction 3 cathode terminals connect adjustable potentiometer 2; The second described PN junction 4 anode taps connect the movable contact end 2a of adjustable potentiometer 2, and the second PN junction 4 cathode terminals connect current output terminal 7; The 3rd described PN junction 5 anode taps connect another stiff end 2c of adjustable potentiometer 2, and the 3rd PN junction 5 cathode terminals connect another current output terminal 8.
Operation principle of the present invention is as follows:
(1) anode that electric current flows into the first PN junction 3 from current input terminal 6 leads to the first PN junction 3 negative electrodes, the stiff end 2b that leads to again adjustable potentiometer 2, through adjustable potentiometer 2, flow to the anode of the second PN junction 4, the negative electrode that leads to again the second PN junction 4 flows to current output terminal 7, when the movable contact end 2a of adjustable potentiometer 2 slides to stiff end 2b, the 2c on both sides, change the resistance value between current input terminal 6 and current output terminal 7,8, thereby changed the size of voltage and electric current.
(2) anode that electric current flows into the first PN junction 3 from current input terminal 6 leads to the first PN junction 3 negative electrodes, the stiff end 2b that leads to again adjustable potentiometer 2, through adjustable potentiometer 2, flow to the anode of the 3rd PN junction 5, the negative electrode that leads to again the 3rd PN junction 5 flows to current output terminal 8, now, be equivalent to voltage stabilizing didoe.
(3) because current direction can only flow to electronic and electrical equipment by current input terminal 6, when other power branch is anti-while flowing to current output terminal 7,8, the second PN junction 4,5 cut-off states of the 3rd PN junction, stop that electric current is counter to flow, solved original adjustable resistor and flowed because other power branch is counter, the problem that causes electronics and electric equipment to damage.
Claims (2)
1. an adjustable unidirectional resistor, it is characterized in that: comprise housing (1), be positioned at the adjustable potentiometer (2) of housing (1), the first PN junction (3), the second PN junction (4), the 3rd PN junction (5), be positioned at outer current input terminal (6) of housing (1), two current output terminal (7, 8), described adjustable potentiometer (2) is provided with movable contact end (2a), two stiff end (2b, 2c), described the first PN junction (3) anode tap connects current input terminal (6), the first PN junction (3) cathode terminal connects the stiff end (2b) of adjustable potentiometer (2), described the second PN junction (4) anode tap connects the movable contact end (2a) of adjustable potentiometer (2), and the second PN junction (4) cathode terminal connects current output terminal (7), the 3rd described PN junction (5) anode tap connects another stiff end (2c) of adjustable potentiometer (2), and the 3rd PN junction (5) cathode terminal connects another current output terminal (8).
2. a kind of adjustable unidirectional resistor according to claim 1, is characterized in that: the seal casinghousing of described housing (1) for adopting insulating material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310571139.7A CN103578669A (en) | 2013-11-15 | 2013-11-15 | Adjustable one-way resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310571139.7A CN103578669A (en) | 2013-11-15 | 2013-11-15 | Adjustable one-way resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103578669A true CN103578669A (en) | 2014-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310571139.7A Pending CN103578669A (en) | 2013-11-15 | 2013-11-15 | Adjustable one-way resistor |
Country Status (1)
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| CN (1) | CN103578669A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2107674U (en) * | 1992-01-06 | 1992-06-17 | 国营腾达建筑安装工程公司 | Liquid level regulating device |
| CN1904789A (en) * | 2005-07-28 | 2007-01-31 | 半导体元件工业有限责任公司 | Current regulator and method therefor |
| CN101764516A (en) * | 2008-09-30 | 2010-06-30 | 凹凸电子（武汉）有限公司 | Power systems, power supply methods and display systems |
| CN201886299U (en) * | 2010-08-10 | 2011-06-29 | 广州中浩控制技术有限公司 | Current differentiating circuit for electronic reactor |
| CN202696530U (en) * | 2012-07-20 | 2013-01-23 | 上海智大电子有限公司 | Digitalized direct-current regulator |
| CN103016133A (en) * | 2012-12-29 | 2013-04-03 | 宛东 | Electronic control type thermostat |
| CN203588781U (en) * | 2013-11-15 | 2014-05-07 | 柳州铁道职业技术学院 | Adjustable unidirectional resistor |
-
2013
- 2013-11-15 CN CN201310571139.7A patent/CN103578669A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2107674U (en) * | 1992-01-06 | 1992-06-17 | 国营腾达建筑安装工程公司 | Liquid level regulating device |
| CN1904789A (en) * | 2005-07-28 | 2007-01-31 | 半导体元件工业有限责任公司 | Current regulator and method therefor |
| CN101764516A (en) * | 2008-09-30 | 2010-06-30 | 凹凸电子（武汉）有限公司 | Power systems, power supply methods and display systems |
| CN201886299U (en) * | 2010-08-10 | 2011-06-29 | 广州中浩控制技术有限公司 | Current differentiating circuit for electronic reactor |
| CN202696530U (en) * | 2012-07-20 | 2013-01-23 | 上海智大电子有限公司 | Digitalized direct-current regulator |
| CN103016133A (en) * | 2012-12-29 | 2013-04-03 | 宛东 | Electronic control type thermostat |
| CN203588781U (en) * | 2013-11-15 | 2014-05-07 | 柳州铁道职业技术学院 | Adjustable unidirectional resistor |
Non-Patent Citations (1)
| Title |
|---|
| 佚名: ""电位器两端串联二极管的电路"", 《电子发烧友》 * |
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Application publication date: 20140212 |
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| RJ01 | Rejection of invention patent application after publication |