The input represents a mic , powered by 9v , modulating the signal by 20mv.
This is amplified 100 times by the op amp. ( LM324) giving out 1v ( only amplifying the + side )Switch on and off the oscilloscope ( the eye button ) to see the signals.
The amplified clap is fed into a comparator ( use ref to set level of back ground noise) this turned on an LED .( could use an optometrist coupler to drive a camera Flash).
The loop back from the output of the comparator to the input , should latch the output , but in the simulation this does not happen!
