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Wide-temperature control method, circuit and system

A technology of control system and control circuit, applied in the direction of control/regulating system, electrical components, adjusting electrical variables, etc., can solve the problems of parameter change of electronic devices, failure of main board to work, etc., to avoid the effect of temperature drift

Pending Publication Date: 2020-12-11
SHENZHEN ITZR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a wide temperature control method, circuit and system thereof, aiming to solve the physical phenomenon of temperature drift of electronic devices in the prior art under extremely cold and extremely hot wide temperature conditions, which causes the parameters of electronic devices to change , a technical problem that prevents the motherboard from working

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  • Wide-temperature control method, circuit and system

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Embodiment Construction

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0026] In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element...

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Abstract

The invention discloses a wide-temperature control method, a wide-temperature control circuit and a wide-temperature control system. The wide-temperature control circuit is used for monitoring a voltage value of a base electrode of a transistor in real time; the monitored voltage value is filtered by using a filtering module, and then the filtered voltage value is transmitted to a main board; themain board judges the interval of the temperature value where the obtained voltage value is located; and according to the determined temperature value interval range, the thermistor R4 in the wide-temperature control circuit is controlled to adjust the base voltage of the transistor and compensate junction saturation conduction voltage change of the transistor so as to compensate parameters of thetransistor and avoid the phenomenon of temperature drift of the transistor under the wide-temperature condition, so the main board circuit can work normally.

Description

technical field [0001] The invention relates to the technical field of motherboard circuits, in particular to a wide temperature control method, circuit and system thereof. Background technique [0002] At present, ordinary motherboards only need to meet the normal temperature conditions (0 ~ 40 ℃) to work normally, but in the field of special computers, due to the harsh requirements of harsh environments, it is often required that the motherboard can operate normally and stably at a wide temperature, such as -40 ℃ to 85 ℃, which is far beyond normal temperature conditions. In this harsh environment of extreme cold and heat, electronic devices such as transistors on the main board will have a physical phenomenon of temperature drift, and the saturation conduction voltage of the emitter junction of the transistor changes with the temperature, thereby changing the characteristics of the circuit and causing the main board to fail. normal work. Contents of the invention [0...

Claims

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Application Information

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IPC IPC(8): H02M3/155H02M1/14H02M1/32
CPCH02M1/14H02M1/32H02M3/155
Inventor 徐茜徐朝阳
Owner SHENZHEN ITZR TECH
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