This circuit is the receiver for the transmitter from the previous project. We also found it in the Radio Electronics Experimenter magazine, 1989 issue.
When the light falling on the sensor is cut off, the SCR fires, powering the lamp. Remember that...
We found this circuit in Radio Electronics from October 1968. The circuit drives headlight bulbs...
This 8.2 V voltage reference was found in a 1968 Electronic Design. The op amp is from the time,...