temperature control switch circuit
A temperature control switch and circuit technology, applied in pump control, non-variable pump, machine/engine, etc., can solve the problem of high cost
Active Publication Date: 2018-05-18
OCEANKING DONGGUAN LIGHTING TECH +2
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Problems solved by technology
The traditional temperature control circuit needs to set an integrated chip to realize the function of temperature control fan speed, and the cost is relatively high
Method used
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[0016] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0017] Such as figure 1 As shown, a temperature control switch circuit is provided, which is used to control the working state of the cooling fan according to the ambient temperature so as to realize the adjustment of the ambient temperature. A temperature control switch circuit includes a temperature sensing module 110 , a voltage dividing module 120 , a three-terminal voltage stabilizing module 130 , a switch module 140 , and a shunt module 150 .
[0018] The temperature sensing module 110 is connected to the power input terminal VCC of the temperature control switch circuit. The temperature se...
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The invention provides a temperature control switch circuit, which is used to control the working state of the cooling fan according to the ambient temperature to adjust the ambient temperature, comprising: a three-terminal voltage stabilizing module; a temperature sensing module; a voltage dividing module; a switch module, including an electronic switch , a bias resistor and a positive feedback resistor, one end of the bias resistor is connected to the high voltage end of the electronic switch, the other end is connected to the control end of the electronic switch, one end of the positive feedback resistor is connected to the low voltage end of the electronic switch, and the other end is connected to the three-terminal stable The reference terminal of the voltage regulator module, the anode of the three-terminal voltage regulator module are grounded, and the control terminal of the electronic switch is connected to the cathode of the three-terminal voltage regulator module; when the three-terminal voltage regulator module is turned off, the electronic switch is turned off, and the fan is not work; when the three-terminal voltage stabilizing module is turned on, the electronic switch is turned on, and the fan is controlled to work to dissipate heat and cool down the environment. The above-mentioned temperature control switch circuit does not need an integrated chip to realize the temperature control function, and the cost is relatively low.
Description
technical field [0001] The invention relates to the technical field of temperature control, in particular to a temperature control switch circuit. Background technique [0002] In many environments where temperature needs to be controlled, when the actual temperature is higher than the allowable temperature, it is necessary to start the fan for heat dissipation and cooling. In the traditional temperature control circuit, an integrated chip needs to be installed to realize the function of temperature control of the fan speed, and the cost is relatively high. Contents of the invention [0003] Based on this, it is necessary to provide a low-cost temperature control switch circuit for the above problems. [0004] A temperature control switch circuit, used to control the working state of the cooling fan according to the ambient temperature to adjust the ambient temperature, comprising: a three-terminal voltage stabilizing module, including a reference terminal, an anode and a...
Claims
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IPC IPC(8): F04D27/00
Inventor 周明杰徐亮亮
Owner OCEANKING DONGGUAN LIGHTING TECH