3 Sound activated switch and Detector Circuit with PCB
This is Sound switch circuit,using IC-1458 and SCR-C106D It will work only if the loud is overdue,for player cameras, can apply to a Burglar alarm circuit Read more
LM1458
1458/4558 Dual OP-AMP Circuits Diagram Datasheet
This is a sample pulse generator using op amp. We often use 555 timer to build a simple pulse generator. The op amp is also easy in oscillator form. More! Read more