This circuit was obtained in an Electronic Engineering of the 90s. The operational amplifiers and the sensor are from that time. The circuit has symmetrical power supply.
This LED signaling circuit uses a programmable unijunction transistor (PUT) as a relaxation...
This decoder filter was found in a 1975 documentation. The integrated circuits can be 741. The...
We found this circuit in the January 1997 Electronics Now magazine. The triac determines the...