CN2445437Y - Light-operated contactless potentiometer - Google Patents
Light-operated contactless potentiometer Download PDFInfo
- Publication number
- CN2445437Y CN2445437Y CN 00234995 CN00234995U CN2445437Y CN 2445437 Y CN2445437 Y CN 2445437Y CN 00234995 CN00234995 CN 00234995 CN 00234995 U CN00234995 U CN 00234995U CN 2445437 Y CN2445437 Y CN 2445437Y
- Authority
- CN
- China
- Prior art keywords
- light
- resistance
- contact point
- photo resistance
- regulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a light-operated contactless potentiometer, which is composed of a casing, a resistance part, and a resistance regulation part; the resistance part is a photoresistor, the resistor regulation part is a light regulation and control part, and namely, the goal of resistance value changes of the photoresistor can be achieved through regulating the strength of light which is irradiated on the photoresistor. The utility model has the advantages of simple structure, strong shock resistance, good versatility, long service life, etc.; furthermore, the utility model is suitable for being made into various potentiometers and is also convenient for module production.
Description
The utility model relates to used potentiometer on a kind of various electrical equipment.
At present, the potentiometer of producing on China domestic market mainly contains kind more than 20, although come in every shape, the function difference, but its total structure principle is roughly the same, and promptly the resistance in the potentiometer is resistive film, and resistive film is made by carbon film or metal oxide film, the function of potentiometer realizes by the resistance that changes resistance, and the change of its resistance then is that the slip by mechanical contact realizes.Though it is simple in structure that the potentiometer of above-mentioned principle has, low cost of manufacture, advantage such as volume is little, but service time is long, especially after the strenuous vibration, faults such as the fracture of carbon film or metal oxide film, mechanical contact loose contact will occur, thereby influence the useful life of potentiometer.
The novel light-operated non-contact point potentiometer that the purpose of this utility model is to provide that a kind of shock resistance is strong, stable performance, useful life prolong.
The utility model is according to the reacting condition sensitivity of photo resistance to light, thereby make its internal resistance produce the characteristics of respective change, come the principle of the required resistance of controlling resistance according to the size of control ray light, resistance of the present utility model partly is designed to photo resistance, contact control partly is designed to light regulates control, promptly reach the purpose that changes resistance, thereby realize the function and the effect of potentiometer by the power of regulating light.
Owing to adopted technique scheme, the utlity model has simple in structure, characteristics such as shock resistance strong, stable performance, versatility are good, prolongation in useful life.According on probation, prolong useful life more than 5 times, be applicable to be made into various potentiometers, also be convenient to modularization production.
Description of drawings:
Fig. 1 looks schematic diagram for master of the present utility model.
Fig. 2 looks schematic diagram for the right side of the present utility model.
Fig. 3 is the shape schematic diagram of light regulator (4).
Fig. 4 is the Principles of Regulation schematic diagram of light regulator (4).
Fig. 5 is the utility model circuit theory schematic diagram.
Be described further below in conjunction with Figure of description: the utility model mainly is made up of light-emitting diode (6), photo resistance (7), welding lead (9) and voltage stabilizing control element etc. that shell (1), supporting sleeve (2), rotating shaft (3), light regulator (4), circuit board (5), branch light shield (8) and installation are welded on the circuit board.Rotating shaft (3) is fixed on the shell (1) by supporting sleeve (2).Light regulator (4) is designed to cylindrical shape, and material is even semi transparent material, the material gage distortion, and the thickness degree is involute shape, and light regulator (4) is used for regulating the power that shines the light in the photo resistance (7); Light regulator (4) and rotating shaft (3) tight fit are fixed in the rotating shaft (3), rotate with rotating shaft (3).Inner bottom part in shell (1) is fixed with one a fen light shield (8) and a circuit board (5); Dividing light shield (8) is cylindrical shape, and the middle part separates by demarcation strip (11) in the tube, becomes two non-interfering enclosure spaces; On a minute light shield (8), design has two loopholes (10), and a loophole is arranged in the enclosure space; The effect that divides light shield (8) is sealing and isolates two light-emitting diodes (6) that the light that light-emitting diode is sent only appears from two loopholes (10).In a minute light shield (8), design has two light-emitting diodes (6), and light-emitting diode (6) is contained on the circuit board (5) by wiring, and the storing position in a minute light shield (8) is corresponding with the loophole (10) on dividing light shield, and light-emitting diode (6) plays the light source effect.Outside a minute light shield (8), design has two photo resistance (7), and photo resistance (7) also is contained on the circuit board (5) by wiring, and the storing position of photo resistance (7) is also corresponding with the loophole (10) on minute light shield (8).Light regulator (4) design is between a minute light shield (8) and photo resistance (7).Welding lead (9) has 6, has two to be power line, and one is control line, and also having three is the potentiometer output line.
Below in conjunction with accompanying drawing 5 explanations circuit theory of the present utility model.Circuit on the utility model circuit board (5) mainly partly is made up of voltage stabilizing circuit and Drive and Control Circuit two.Voltage stabilizing circuit is by integrated regulator piece IC, R
1, C
1And C
2Form, power supply is from V
CPoint meets the people, through current-limiting resistance R
1Be input to IC voltage stabilizing output after the current limliting, C
1, C
2Be power filtering capacitor, the interference signal in the external power supply of filtering.Drive and Control Circuit is by R
2, R
3, R
4, control triode TR and light-emitting diode D
1, D
2Form.R
2, R
3Be light-emitting diode D
1, D
2The driving current-limiting resistance, as can be seen from the figure, light-emitting diode D
2The light that sends is only to photo resistance GR
2Work D
2Luminous intensity be subjected to R
3Control to be fixed on desirable value constant, photo resistance GR
2The power of the light that receives is only relevant with light regulator (4).And photo resistance GR
1Then different, outside the Pass the power of the light that it is received is removed and is had with light regulator (4), also with control triode TR to light-emitting diode D
1Control current relevant, promptly adjust light-emitting diode D
1On size of current can change photo resistance GR
1On resistance; At light-emitting diode D
1And D
2Two ends also be parallel with two capacitor C respectively
4And C
5,, strengthen antijamming capability to improve the stability of circuit; C
3Then be provided with in order to prevent that interference signal from entering from the control end N that controls triode TR.
The control end N of control triode TR is controlled by external control signal or command signal, when N receive be a signal that progressively descends by high level the time, under the control of control triode TR, light-emitting diode D
1On electric current progressively rise photo resistance GR then
1Internal resistance gradually from large to small, I
1With O
2Between the amount the also corresponding reinforcement of transmission, otherwise corresponding weakening; If N is directly linked to each other with ground, the complete conducting of control triode TR, light-emitting diode D
1Shinny, photo resistance GR
1The resistance that keeps light regulator (4) to be regulated and control is constant; When N links to each other with the anode of power supply, then control triode TR and end, light-emitting diode D
1Last no current passes through, D
1Extinguish photo resistance GR
1Internal resistance be infinitely great, be equivalent to O
2With I
1Disconnect.
During use, light-emitting diode is shinny behind power connection on the one hand, by rotating shaft (3), light regulator (4) is rotated, variation along with light regulator (4) printing opacity position, the power of the light that sees through changes, thereby the resistance of photo resistance (7) is changed, and light regulator (4) is thinner with the pairing position of loophole (10) material, the light that then sees through is stronger, the resistance of photo resistance (7) is less, otherwise resistance is bigger; On the other hand, light regulator (4) is kept a certain invariant position, change operating current on the light-emitting diode (6) by regulating control triode TR, operating current is from large to small the time, the light that light-emitting diode (6) is sent will be changed to dark by bright, and the internal resistance of photo resistance simultaneously (7) also can ascending thereupon change.When the current break of light-emitting diode (6) was zero, the internal resistance of photo resistance (7) suddenlyd change to infinity, was equivalent to potentiometer and disconnected; Light-emitting diode (6) is when being conducting to maximum operating currenbt, and the internal resistance meeting of photo resistance (7) is reduced near zero, and be equivalent to potentiometer and connect, thus the action and function of realization potentiometer.In fact, can also utilize and adjust these characteristics of light-emitting diode operating current, add a simple control circuit and realize and little Processing Interface, come the size of regulating and controlling resistance and functions such as connecting and disconnecting by little processing signal.
Claims (8)
1, a kind of light-operated non-contact point potentiometer, partly form by shell, resistance part and resistance regulation and control, it is characterized in that in shell (1), design has two light-emitting diodes (6) and two photo resistance (7), the light transmission light regulator (4) that light-emitting diode (6) sends shines in the photo resistance (7), control the power that shines the light in the photo resistance (7) by rotation light regulator (4) and adjusting by the operating current of light-emitting diode (6), thereby change the resistance of photo resistance (7).
2, light-operated non-contact point potentiometer according to claim 1 is characterized in that rotating shaft (3) is fixed on the shell (1) by supporting sleeve (2), and light regulator (4) is fixed in the rotating shaft (3), rotates with rotating shaft (3).
3, according to claim 1,2 described light-operated non-contact point potentiometers, it is characterized in that light regulator (4) is shaped as cylindrical shape, material is even semi transparent material, the material gage distortion, the thickness degree is involute shape.
4, light-operated non-contact point potentiometer according to claim 1 is characterized in that the inner bottom part in shell (1), is fixed with a branch light shield (8) and a circuit board (5), and light-emitting diode (6) and photo resistance (7) are contained on the circuit board (5) by wiring.
5, according to claim 1,4 described light-operated non-contact point potentiometers, it is characterized in that branch light shield (8) is cylindrical shape, the middle part separates by demarcation strip (11) in the tube, and on a minute light shield (8), design has two loopholes (10).
6, according to claim 1,4,5 described light-operated non-contact point potentiometers, it is characterized in that in a minute light shield (8), two loopholes (10) on two light-emitting diodes (6) are put the position and divided light shield (8) are corresponding, outside a minute light shield (8), the storing position of two photo resistance (7) is also corresponding with two loopholes (10) on minute light shield (8).
7,, it is characterized in that light regulator (4) design is between a minute light shield (8) and photo resistance (7) according to claim 1,2,3 described light-operated non-contact point potentiometers.
8, light-operated non-contact point potentiometer according to claim 1 is characterized in that circuit theory diagrams are with R
2, TR, D
1Series connection, R
3, D
2Series connection is with D
1, D
2Two series loop parallel connections at place, resistance R of series connection before parallel circuits
1With integrated package of pressure-stabilizing IC; In IC input both ends of power capacitor C in parallel
1, at IC out-put supply two ends, capacitor C in parallel
2In resistance R of TR control end N series connection
4, make TR control end N pass through R
4O joins with ground wire, between the emitter and the control utmost point of TR, and the capacitor C of connecting
3At D
1Two ends, capacitor C in parallel
4, at D
2Two ends, capacitor C in parallel
5D
1, D
2The light that sends shines photo resistance GR by light regulator
1, GR
2On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00234995 CN2445437Y (en) | 2000-05-27 | 2000-05-27 | Light-operated contactless potentiometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00234995 CN2445437Y (en) | 2000-05-27 | 2000-05-27 | Light-operated contactless potentiometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2445437Y true CN2445437Y (en) | 2001-08-29 |
Family
ID=33596921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00234995 Expired - Fee Related CN2445437Y (en) | 2000-05-27 | 2000-05-27 | Light-operated contactless potentiometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2445437Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236450A (en) * | 2013-04-02 | 2013-08-07 | 吴思齐 | Variable resistor |
-
2000
- 2000-05-27 CN CN 00234995 patent/CN2445437Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236450A (en) * | 2013-04-02 | 2013-08-07 | 吴思齐 | Variable resistor |
| CN103236450B (en) * | 2013-04-02 | 2015-11-25 | 吴思齐 | Rheostat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |