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 circuit was found in old publication from 1958. The circuit uses germanium transistor, common in...
This asymmetrical crossover filter was obtained from an 80s integrated circuit manual. The...
This circuit was originally designed for communications applications. We found it in a 1980s...