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本文介绍的显示器电路,它能直接推动彩色灯泡随着音乐强弱而闪烁。整机电路如下图所示,立体声收录机输出的音频信号经B_1、B_2耦合到驱动器 SL332,由它去触发可控硅使彩灯发光。输入端每增加0.65V,就会多点亮一盏灯,至3.5V时便可点亮十盏灯。SL322有两个独立的输入端[17]及②。
This article describes the display circuitry that can directly push a colored light bulb to blink with the strength of the music. The whole circuit is shown as the following figure. The audio signal output from the stereo tape recorder is coupled to the driver SL332 via B_1 and B_2, which triggers the silicon controlled rectifier to make the lantern glow. Each additional 0.65V input, it will light a light, to 3.5V can be lit ten lights. SL322 has two independent inputs [17] and ②.