CN204271110U - A kind of controllable light sensitive resistor - Google Patents
A kind of controllable light sensitive resistor Download PDFInfo
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- CN204271110U CN204271110U CN201420653073.6U CN201420653073U CN204271110U CN 204271110 U CN204271110 U CN 204271110U CN 201420653073 U CN201420653073 U CN 201420653073U CN 204271110 U CN204271110 U CN 204271110U
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- electromagnetic relay
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Abstract
The utility model discloses a kind of controllable light sensitive resistor, comprise: resistance, triode, electromagnetic relay, photo resistance, power supply, key switch, metal connection post A, metal connection post B, circuit board, resistance, triode, electromagnetic relay, photo resistance, power supply, metal connection post A, metal connection post B is fixing on circuit boards, electromagnetic relay divides electromagnetic relay solenoid and electromagnetic relay switch two parts, key switch is fixed on operation control place, metal connection post A is electrically connected with one end of electromagnetic relay switch, the other end of electromagnetic relay switch is electrically connected with one end of photo resistance, the other end of photo resistance is electrically connected with metal connection post B, metal connection post A and metal connection post B external control circuit, when needing photo resistance to work, as long as key switch is in off-state, triode operation electromagnetic relay solenoid obtains electric, electromagnetic relay switch connects circuit, photo resistance is worked, otherwise photo resistance is inoperative.
Description
Technical field
The utility model relates to a kind of controllable light sensitive resistor.
Background technology
It is little that photo resistance has the resistance when there being illumination, the feature that during unglazed photograph, resistance is large, be commonly used in light automatic control circuit, but sometimes there is the circuit that will add some complexity when not wanting to allow light-operated circuit work in addition, the design provides a kind of controllable light sensitive resistor, can control photo-resistor flexibly.
Summary of the invention
The purpose of this utility model is to provide a kind of controllable light sensitive resistor, can control photo-resistor flexibly.
The purpose of this utility model is achieved through the following technical solutions:
As a kind of technical scheme, a kind of controllable light sensitive resistor, comprise: resistance, triode, electromagnetic relay, photo resistance, power supply, key switch, metal connection post A, metal connection post B, circuit board, resistance, triode, electromagnetic relay, photo resistance, power supply, metal connection post A, metal connection post B is fixing on circuit boards, electromagnetic relay divides electromagnetic relay solenoid and electromagnetic relay switch two parts, key switch is fixed on operation control place, metal connection post A is electrically connected with one end of electromagnetic relay switch, the other end of electromagnetic relay switch is electrically connected with one end of photo resistance, the other end of photo resistance is electrically connected with metal connection post B, metal connection post A and metal connection post B external control circuit.
As a kind of technical scheme, a kind of controllable light sensitive resistor, it is characterized in that, one end of resistance is electrically connected with the positive pole of power supply, and the other end of resistance is electrically connected with transistor base, the positive pole of power supply and one end electrical connection of electromagnetic relay solenoid, the other end of electromagnetic relay solenoid is electrically connected with transistor collector, the emitter of triode is connected with the negative electricity of power supply, and key switch one end is electrically connected with transistor base, and the key switch other end is connected with the negative electricity of power supply.
As a kind of technical scheme, power supply is 6v lithium battery.
This kind of controllable light sensitive resistor has can the feature of control circuit flexibly.
Accompanying drawing explanation
With reference to the accompanying drawings the utility model is described in further detail below.
Fig. 1 is the electrical block diagram of a kind of controllable light sensitive resistor described in the utility model embodiment;
Accompanying drawing 1 symbol description: 1 resistance, 2, triode, 3, electromagnetic relay, 31, electromagnetic relay solenoid, 32, electromagnetic relay switch, 4, photo resistance, 5, power supply, 6, key switch, 7, circuit board, metal connection post A, metal connection post B.
Embodiment
The utility model is specifically introduced as follows below in conjunction with drawings and Examples:
As one preferably as a kind of embodiment, a kind of controllable light sensitive resistor, comprise: resistance 1, triode 2, electromagnetic relay 3, photo resistance 4, power supply 5, key switch 6, metal connection post A, metal connection post B, circuit board 7, resistance 1, triode 2, electromagnetic relay 3, photo resistance 4, power supply 5, metal connection post A, metal connection post B is fixed on circuit board 7, electromagnetic relay 3 points of electromagnetic relay solenoids and electromagnetic relay switch two parts, key switch 6 is fixed on operation control place, metal connection post A is electrically connected with one end of electromagnetic relay switch, the other end of electromagnetic relay switch is electrically connected with one end of photo resistance 4, the other end of photo resistance 4 is electrically connected with metal connection post B, metal connection post A and metal connection post B external control circuit.
As a kind of embodiment, one end of resistance 1 is electrically connected with the positive pole of power supply 5, the other end of resistance 1 is electrically connected with triode 2 base stage, the positive pole of power supply 5 and one end electrical connection of electromagnetic relay solenoid, the other end of electromagnetic relay solenoid is electrically connected with triode 2 collector electrode, the emitter of triode 2 is connected with the negative electricity of power supply 5, and key switch 6 one end is electrically connected with triode 2 base stage, and key switch 6 other end is connected with the negative electricity of power supply 5.
As a kind of embodiment, power supply 5 is 6v lithium battery.
When needing photo resistance 4 to work, as long as key switch 6 is in off-state, triode 2 working electromagnet electromagnetic coil relay obtains electric, and electromagnetic relay switch connects circuit, and photo resistance 4 is worked, otherwise key switch 6 is in on-state, triode 2 base stage and ground short circuit, triode 2 does not work, electromagnetic relay solenoid dead electricity, electromagnetic relay switch open circuit, photo resistance 4 is inoperative.
Claims (3)
1. a controllable light sensitive resistor, it is characterized in that, comprise: resistance, triode, electromagnetic relay, photo resistance, power supply, key switch, metal connection post A, metal connection post B, circuit board, above-mentioned resistance, triode, electromagnetic relay, photo resistance, power supply, metal connection post A, metal connection post B is fixing on circuit boards, above-mentioned electromagnetic relay divides electromagnetic relay solenoid and electromagnetic relay switch two parts, for above-mentioned key switch is fixed on operation control place, metal connection post A is electrically connected with one end of electromagnetic relay switch, the other end of above-mentioned electromagnetic relay switch is electrically connected with one end of photo resistance, the other end of above-mentioned photo resistance is electrically connected with metal connection post B, above-mentioned metal connection post A and metal connection post B external control circuit.
2. according to a kind of controllable light sensitive resistor described in claim 1, it is characterized in that, one end of above-mentioned resistance is electrically connected with the positive pole of power supply, the other end of above-mentioned resistance is electrically connected with transistor base, the positive pole of above-mentioned power supply and one end electrical connection of electromagnetic relay solenoid, the other end of above-mentioned electromagnetic relay solenoid is electrically connected with transistor collector, the emitter of above-mentioned triode is connected with the negative electricity of power supply, above-mentioned key switch one end is electrically connected with transistor base, and the above-mentioned key switch other end is connected with the negative electricity of power supply.
3., according to claim 1 or a kind of controllable light sensitive resistor according to claim 2, it is characterized in that, above-mentioned power supply is 6v lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420653073.6U CN204271110U (en) | 2014-11-05 | 2014-11-05 | A kind of controllable light sensitive resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420653073.6U CN204271110U (en) | 2014-11-05 | 2014-11-05 | A kind of controllable light sensitive resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204271110U true CN204271110U (en) | 2015-04-15 |
Family
ID=52805958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420653073.6U Expired - Fee Related CN204271110U (en) | 2014-11-05 | 2014-11-05 | A kind of controllable light sensitive resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204271110U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576069A (en) * | 2014-11-05 | 2016-05-11 | 南京化工职业技术学院 | Controllable photosensitive resistor |
-
2014
- 2014-11-05 CN CN201420653073.6U patent/CN204271110U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576069A (en) * | 2014-11-05 | 2016-05-11 | 南京化工职业技术学院 | Controllable photosensitive resistor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20151105 |
|
| EXPY | Termination of patent right or utility model |