This circuit uses a 7-segment display to indicate the logic level of a test circuit. The power supply is made with 5 V that can come from the analyzed circuit itself.
This two-microphone amplifier was found in a April 1961 Radio Electronics Magazine. The circuit is...
The integrated circuit of this pulse generator is 4093 and the frequency can be between a fraction of...
Found in 90s Radio Electronics, this circuit is intended for amplifying analog video signals....