A circuit for controlling the self-heating of a power amplifier under low temperature

A self-heating, low-temperature technology, applied to power amplifiers, improving amplifiers to reduce temperature/power voltage changes, etc., can solve problems such as failure to start normally, and achieve the effect of simple circuit and low cost

Pending Publication Date: 2018-12-11
南京拓途电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing technologies are technologies to speed up heat dissipation, or methods of adding additional heating devices. There is no technology involving power amplifiers that cannot start normally due to low temperature or use the circuit to heat itself during work.

Method used

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  • A circuit for controlling the self-heating of a power amplifier under low temperature
  • A circuit for controlling the self-heating of a power amplifier under low temperature
  • A circuit for controlling the self-heating of a power amplifier under low temperature

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention.

[0025] see figure 1 , is a schematic circuit block diagram of the present invention, including a power amplification module 10 , a...

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PUM

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Abstract

The invention discloses a circuit for controlling heat generation of a power amplifier under low temperature, which is suitable for a power amplifier with an output buffer circuit. The circuit comprises a power amplifier module, a buffer module, a heating module and a temperature detection module. The power amplifier module receives the input signal, amplifies the input signal, and outputs the amplified signal after passing through the buffer module. The buffer module includes a first capacitor and a first resistor. The temperature detection module includes a temperature control switch and a preset threshold. The temperature detection module detects the outside temperature. When the temperature monitoring value is lower than the threshold value, the power amplifier module is turned off andthe heating module is turned on to heat the buffer module. When the temperature monitoring value is higher than the threshold value, the power amplifier module is turned on and the heating module isturned off, so that the power amplifier can be in normal operation. When the external temperature is low and the power amplifier can not start or work normally, the circuit is pre-heated by using thecircuit characteristics , has low cost and is simple, and can be widely used in cold areas.

Description

technical field [0001] The invention relates to the field of electronic circuits, in particular to a circuit for controlling self-heating of a power amplifier with an output buffer circuit at low temperature. Background technique [0002] Power amplifiers have a wide range of applications in production and life, involving different fields and regions. In most cases, since high temperature will cause irreversible damage to some components in the power amplifier, heat dissipation has always been a problem that must be paid attention to from the design to the use of the power amplifier. However, in some alpine regions and special application scenarios, the heat dissipation of the power amplifier is no longer the main problem, and how to make the power amplifier start and work normally has become the biggest problem. [0003] In the prior art, most power amplifiers include filter circuits and buffer circuits, etc., and the values ​​of components in these circuits are usually ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/30H03F3/20
CPCH03F1/30H03F3/20
Inventor 张成张晨
Owner 南京拓途电子有限公司
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