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键控数字音量调节器林长浩采用电位器进行音量控制的音响设备，使用一段时间后，由于灰尘或其他原因，往往造成音量控制不灵或在调音量的时候引入令人厌烦的“沙沙”声。本文介绍的键控数字音量调节器可克服以上缺点，它采用轻触型按键来控制音量的增减，利用电子开关来选...
Keying digital volume regulator Lin Chang-ho potentiometer with volume control of audio equipment, after a period of time, due to dust or other reasons, often resulting in ineffective volume control or adjust the volume when the introduction of annoying “rustling” sound. This article describes the keying digital volume regulator to overcome the above shortcomings, which uses touch-type keys to control the volume change, the use of electronic switches to select ...