CN2614992Y - Car water tank temperature controller - Google Patents
Car water tank temperature controller Download PDFInfo
- Publication number
- CN2614992Y CN2614992Y CN 03230745 CN03230745U CN2614992Y CN 2614992 Y CN2614992 Y CN 2614992Y CN 03230745 CN03230745 CN 03230745 CN 03230745 U CN03230745 U CN 03230745U CN 2614992 Y CN2614992 Y CN 2614992Y
- Authority
- CN
- China
- Prior art keywords
- resistance
- circuit
- load
- connects
- temperature controller
- 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 - Lifetime
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Abstract
A temperature controller for the water tank of a car is characterized in that the control circuit is connected with the base electrode of an amplifier tube T1 by a resistance R1 and simultaneously connected with the anode of a thyristor T2, the control electrode of the thyristor T2 connected with a sampling resistance R4 and the emitting electrode of the amplifier tube T1 by a resistance R3, the other end of the resistance R4 and the cathode of the thyristor T2 are connected with the negative terminal of a power E, the collector of the amplifier tube T1 is connected with a resistance R2 then connected with the positive terminal of the power E by the resistance R2. When the output circuit makes the load in the state of power on, the output circuit turns into and keeps in the state of short-circuit protection as soon as the load R2 instantaneously or continuously short-circuit, thereby no current passes through the load.
Description
Technical field
The utility model relates to a kind of vehicle water tank temperature control setup, relates to a kind of water box for car temperature controller that is not subjected to overcurrent damage specifically.
Background technology
Existing Fukang Car water tank temperature controller, load short circuits surpasses 15 seconds just might damage output circuit.No matter be in actual use on the assembling line or in the running car way, in a single day load short circuits takes place in the radiator temperature controller, be difficult to guarantee that short circuit duration is not more than 15 seconds, the high power valve of output circuit burns out easily in the radiator temperature controller at this moment.If short trouble need can be eliminated through repairing, short circuit duration drags very longly, and then the power tube of output circuit is easy to burn out in the radiator temperature controller, brings potential safety hazard for the use of car, can feel very trouble for this reason.
Summary of the invention
The purpose of this utility model is the protection to a kind of water box for car temperature controller output circuit excess current, when the long-time short circuit of load, can not damage a kind of water box for car temperature controller of output circuit power tube.
For finishing the technical scheme that above-mentioned purpose is taked: it comprises signal input circuit, the output circuit that control circuit is identical with other the water box for car temperature controller, described control circuit connects the base stage of horsepower output pipe T1 by resistance R 1, the anode that connects silicon control T2 simultaneously, the control utmost point of T2 connects the emitter of sampling resistor R4 and T1 by resistance R 3, the other end of resistance R 4 is connected the negative terminal of power supply E with the negative electrode of silicon control T2, the collecting electrode of T1 connects load R2, connects the anode of power supply E by R2.
The utility model is when output circuit is in when making the load "on" position; in a single day load R2 is short-circuited; no matter be instantaneous short circuit or long-time short circuit, the output circuit on this road all will enter the load short circuits guard mode immediately and remain under this state, and this moment, this road load no current passed through.Before the load short circuits fault was not eliminated, except the output circuit cisco unity malfunction on this road, other output circuits still can normal operation, can not damage any components and parts, and relevant wire fuse can not damage yet.After the load short circuits fault was eliminated, as long as the control signal of the output circuit on this road can make the load of this output circuit cut off the power supply once, then the output circuit on this road can recover normal operation.Or water temperature centring control box power supply " cut-out " once (automobile is lighted a fire again), all protected output circuits can both recover normal operation.
Description of drawings
Fig. 1 is water box for car temperature controller schematic circuit diagram.
The specific embodiment
1 pair of the utility model further describes with reference to the accompanying drawings: be arranged at the temperature sensor in the water tank, be connected to signal input circuit 1, carry out signal conditioning according to the variation of this sensor resistance, then controlled by control circuit 2.Signal input circuit 1 is by constant current source, op amp is formed, control circuit 2 is by power circuit, microcontroller is formed, above-mentioned control circuit 2 can be connected with other circuit 3, as the high speed fan output circuit, cut off air-condition circuits and alarm lamp circuit, it is characterized in that control circuit 2 is by the base stage of resistance R 1 connection horsepower output pipe T1 in the above-mentioned prior art, the anode that connects silicon control T2 simultaneously, the control utmost point of T2 connects the emitter of sampling resistor R4 and T1 by resistance R 3, the other end of resistance R 4 is connected the negative terminal of power supply E with the negative electrode of silicon control T2, the collecting electrode of T1 connects load R2, connects the anode of power supply E by R2.
The utility model is when the moment that load R2 is short-circuited, and short circuit current produces a voltage on sampling resistor R4, triggers silicon control T2 by R3 and makes its conducting, and horsepower output pipe T1 is owing to base stage is ended by clamper.Though this moment, the voltage of sampling resistor R4 was zero volt (electric current that flows through horsepower output pipe T1 is 0), silicon control T2 still keeps conducting state under the holding current effect that control circuit 2 provides by resistance R 1, and horsepower output pipe T1 is in off condition always.Therefore, the utility model can provide lasting protection to output circuit when load is short-circuited, till eliminating load short circuits.
Claims (1)
1. water box for car temperature controller, comprise signal input circuit (1), the output circuit (3) that control circuit (2) is identical with other, it is characterized in that described control circuit (2) connects the base stage of horsepower output pipe T1 by resistance R 1, the anode that connects silicon control T2 simultaneously, the control utmost point of T2 connects the emitter of sampling resistor R4 and T1 by resistance R 3, the other end of resistance R 4 is connected the negative terminal of power supply E with the negative electrode of silicon control T2, the collecting electrode of T1 connects load R2, connects the anode of power supply E by R2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03230745 CN2614992Y (en) | 2003-04-28 | 2003-04-28 | Car water tank temperature controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03230745 CN2614992Y (en) | 2003-04-28 | 2003-04-28 | Car water tank temperature controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2614992Y true CN2614992Y (en) | 2004-05-12 |
Family
ID=34247750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03230745 Expired - Lifetime CN2614992Y (en) | 2003-04-28 | 2003-04-28 | Car water tank temperature controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2614992Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600660A (en) * | 2015-01-09 | 2015-05-06 | 广东瑞德智能科技股份有限公司 | Low-power-consumption short circuit protection circuit |
-
2003
- 2003-04-28 CN CN 03230745 patent/CN2614992Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600660A (en) * | 2015-01-09 | 2015-05-06 | 广东瑞德智能科技股份有限公司 | Low-power-consumption short circuit protection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130428 Granted publication date: 20040512 |