How to build a pulse generator circuit using operational amplifier, very basic, it is the circuit stable multi vibrator or square wave oscillator. It uses a dual operational amplifier IC, one in 1458. The output frequency set by the value of R1 and C1. The calculation is Frequency = 1 / (2R1.C1.ln3)
The capacitor C1 1uF to change capacitance value by the frequency of 8 Hz, = 0.1uF 50Hz, 700Hz = 0.01uF, 0.001uF = 6kHz. In place of 1458 4558 may be used, LF353, etc.
Pulse Generator using Basic Operational Amplifier Circuit Diagram
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