This receiver was found in a 1924 book by Gernsback. The circuit uses three tubes and is powered by 3 batteries of different voltages, common at the time.
This circuit was obtained in a Texas Instruments 2012 documentation, which consists of a current...
This circuit was found in a 1964 Electronic Design. It generates opposite phase signals from an...
This circuit uses a 7-segment display to indicate the logic level of a test circuit. The power...