This circuit uses CMOS integrated circuits and can operate with CMOS logic from 3 to 15 V or TTL with 5 V power. The power is obtained from the circuit under analysis.
This circuit uses two Raytheon RC4558 operational amplifiers that are similar to the 741. The...
This circuit was obtained in the publication 101 Electronics Projects from 1979. The circuit can...
This circuit was found in Japanese documentation from the 1960s. The coil must be 4 mH and the...