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A Simple Low Power Controllable Heating Circuit

A heating circuit, low-power technology, used in ohmic resistance heating, electric heating devices, electrical components, etc., can solve problems such as lack of intelligence

Active Publication Date: 2016-02-24
SHENZHEN INFINOVA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that it needs to be adjusted manually and lacks intelligence

Method used

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  • A Simple Low Power Controllable Heating Circuit
  • A Simple Low Power Controllable Heating Circuit
  • A Simple Low Power Controllable Heating Circuit

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Embodiment Construction

[0017] Hereinafter, the present invention will now be described more fully with reference to the accompanying drawings, in which various embodiments are shown. However, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0018] Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

[0019] The circuit logic structure is as figure 2 As shown, it can be composed of two parts: heating circuit and control circuit.

[0020] Heating circuit: The heating circuit is mainly composed of controllable power MOS tube and corresponding regulating transistor, with state feedback function, high level means off, other levels means normal work. Users ca...

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Abstract

A simple small power controllable heating circuit comprises two parts, namely a heating circuit and a control circuit, wherein the heating circuit comprises a power controllable MOS pipe and a corresponding regulating triode, and has a state feedback function; the heating circuit is shut off at a high level, and normally works at other levels; the control circuit is a parameter regulating unit of the heating circuit, and has an enable control signal and a power control signal; when the enable control signal is at the high level, the heating is carried out, and when the enable control signal is at a low level, the heating is stopped; the power control signal is a PWM wave signal; the heating value of the circuit can be changed through regulating the duty cycle of the PWM wave, so that the purpose of intelligent heating control is achieved. The power controllable heating circuit is matched with the control unit to realize the complete intellectualization, does not need manual intervention, is simple, low in cost, flexible to operate, and is commonly used for heating circuit boards, chip ICs and the like.

Description

technical field [0001] The invention is suitable for all electronic equipments that need to be heated, such as surveillance cameras, matrixes, digital (network) hard disk recorders, communication base stations, outdoor switches, large routers, etc. Background technique [0002] Outdoor electronic equipment, especially security monitoring equipment, is often unable to start because the temperature is too low. At this time, it is necessary to heat the entire circuit system to increase the temperature. [0003] Traditional heating circuits: Traditional heating circuits such as figure 1 As shown, it is mainly composed of heating resistance and control switch. The MOS tube is used as a heating control switch to control the conduction of the heating resistor, and the heating power can be controlled by controlling the resistance of the heating resistor. The disadvantage is that it needs to be adjusted manually and lacks intelligence. SUMMARY OF THE INVENTION [0004] The prese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B3/00H05B1/02
Inventor 宋志超
Owner SHENZHEN INFINOVA