This simple digital circuit tester can work with TTL technology when powered by 5 V and with CMOS when powered by voltages from 3 to 15 V. The circuit provides LED indications and uses current ICs.
Found on an 80's Radio Electronics, this circuit is designed to pass the 300 to 34,000 Hz voice...
This is the target for the CB18793E infrared firing gun. The circuit can be powered by voltages from 5...
This experimental AM radio circuit was found in a 1979 English magazine. It can be fitted with a...