This circuit is from 1999 documentation. The integrated circuit used is not very common today. Both transistors are used if the motor current is greater than 500 mA.
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...