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This is function generator using op amp. As usual the function generator will be expensive and difficult.However, this is a simple circuit with only two ICs. This circuit is suitable…
When we have low current current output of OP-AMP, so cannot use any circuit output. We can increase output current by this. In circuit the OP-AMP IC-LM324 up current to 85mA size max.
This circuit acts rectifier the ACV signal.This circuit usually requires two op-amp, but this circuit uses only one op-amp.
This is all simple LM741 circuits, it's so useful, LM741's general purpose single OP-AMP. UA741's high performance monolithic OP-AMP on single silicon chip.