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Temperature control circuit and electronic equipment with same

A technology for temperature control and electronic equipment, applied in temperature control, non-electric variable control, control/regulation systems, etc., can solve problems such as electronic equipment cannot start or work normally

Inactive Publication Date: 2014-03-26
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the components of existing electronic equipment can only work normally in the environment of 0-70 ℃, which makes the electronic equipment unable to start or work normally in the low temperature environment

Method used

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  • Temperature control circuit and electronic equipment with same
  • Temperature control circuit and electronic equipment with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Please refer to figure 1 and figure 2 , a preferred embodiment of the electronic device 10 of the present invention includes a temperature control circuit 14 and a system module 12 . The temperature control circuit 14 enables the electronic device 10 to operate normally in a low temperature environment.

[0022] The system module 12 is used to implement the basic functions of the electronic device 10, such as information processing, multimedia playback, etc., but it cannot work normally in a low temperature environment, which are existing technologies and will not be described in detail here.

[0023] The temperature control circuit includes a microprocessor U1, a negative temperature coefficient thermistor NTC, a triode Q1, an N-channel enhancement type Metal-Oxide-Semiconductor Field-Effect Transistor (Metal-Oxide-Semiconductor Field-Effect Transistor) , MOSFET) Q2 (hereinafter referred to as field effect tube) and a heater U2.

[0024] The base of the transistor ...

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PUM

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Abstract

The invention discloses a temperature control circuit, which comprises a microprocessor, a thermistor with a negative temperature coefficient, a first electronic switch, a second electronic switch and a heater, wherein the first end of the first electronic switch is connected to a power supply through a first resistor; the thermistor is connected in parallel with a second resistor and then is connected in series between the first end of the first electronic switch and the ground; the second end of the first electronic switch is grounded; the third end of the first electronic switch is connected to a signal input pin of the microprocessor and is connected to the power supply through a third resistor simultaneously; a signal output pin of the microprocessor is connected to the first end of the second electronic switch and is connected to the power supply through a fourth resistor simultaneously; the second end of the second electronic switch is grounded; and the heater is connected between the power supply and the third end of the second electronic switch. By the temperature control circuit, electronic equipment can be normally started in a low-temperature environment and can keep the normal operation after being started.

Description

technical field [0001] The invention relates to a temperature control circuit, in particular to an electronic device with the temperature control circuit. Background technique [0002] Most components of existing electronic equipment can only work normally in an environment of 0-70° C., which makes the electronic equipment unable to start or work normally in a low temperature environment. Contents of the invention [0003] In view of the above, it is necessary to provide a temperature control circuit that can enable electronic equipment to operate normally in a low temperature environment. [0004] It is also necessary to provide an electronic device that can function normally in a low temperature environment. [0005] A temperature control circuit, comprising a microprocessor, a thermistor with a negative temperature coefficient, a first electronic switch, a second electronic switch and a heater, the first end of the first electronic switch passes through a first A resi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D23/24
Inventor 谢明志
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD