通过分析和计算说明老式煤电钻综合保护装置在漏电保护和执行电路中存在的问题。
The problems in leakage protection and executive circuit of synthetical protection set in coal electric drill have been analyzed and calculated.
音量控制电路由编程开关、电脑存储放大执行电路构成，可实现报警音量自动控制；
The volume control circuit is composed of a programming switch and a computer storing magnifying executive circuit, and can realize the automatic alarming volume control.
指令译码器将编码指令信号进行译码，最后由驱动电路来驱动执行电路实现各种指令的操作。
Encoding instruction decoder for decoding command signals, and finally by the drive circuit to drive the implementation of circuit operation to achieve a variety of commands.
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