八几年,曾经买了一堆那种一头带螺纹的单向可控硅,价极便宜,大约1角一个。用下图的电路制成调光开关,效果不错。此电路只有2个可控硅加1个电位器,估计没有比它再简洁的电路了。因价格便宜,做完后到处送人,评价 ...
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