This circuit is the receiver for the transmitter from the previous project. We also found it in the Radio Electronics Experimenter magazine, 1989 issue.
This circuit with integrated TTL 7400 has a good teaching purpose, drawing one of two LEDs. The...
This simple circuit causes an LED to light up when the battery voltage drops below the voltage set in the...
This circuit was found in a Popular Electronics from the 90's. The circuit has gained 10 to 20 dB...