本文介绍一种能使温度变化保持在±0.1℃的温度控制电路,它能对精密仪器提供一个恒定的环境温度.为了满足精密温度控制的要求,电路必须保证在加温阶段输出较大电流以获得足够的加温功率;在进入温度稳定阶段时,电路的电流输出量须适时控制,放大器应有比较大的增益.考虑到电路的效率,应使电路本身的耗散功率尽可 This article describes a temperature control circuit that maintains a temperature change of ± 0.1 ° C and provides a constant ambient temperature for the precision instrument.In order to meet the requirements of precision temperature control, the circuit must ensure that a large current is output during warm-up Access to sufficient heating power; enter the temperature stable phase, the current output of the circuit to be timely control, the amplifier should have a relatively large gain. Taking into account the efficiency of the circuit, the circuit should be dissipated as much power as possible