This UAA170 application circuit was taken from Siemens' own integrated circuits manual from 1976. The maximum supply voltage is 18 V.
Found in the 1991 Electronics Experimenter Handbook, this circuit detects voltage variations in...
This RCA commercial radio had its circuit published in Radio Electronics magazine in August 1959....
This circuit can also use other series operational amplifiers such as MC33172, MC33174, MC35171,...