741

This circuit is a mono pre amp circuit, which can be used with a variety of inputs.Can be applied for extending the phone and the other with When AF IN input signal to pin 3 of IC1, and The voltage input to pin 2 of IC1.The IC number LM741 used to amplifier circuit,Output at Pin [...]

This circuit is the sound generator super siren, for use be alarm signal get by live frequency generator circuit that use , op-amp circuit. The principle works to are while still no press switch S1 will still have no the loud sound comes out from a loudspeaker SP1. When do pressure switch S1 then liberate [...]

This is active high pass filter circuit for 327Hz frequency using LM741. It will use to build Harmonic at 3 of 130.81 frequency have the value at least. More than the frequency Fundamental 30 dB, for output be sawtooth wave form for use in sound of music way system Electronic design will use the circuit [...]