This anti-bounce circuit was found in a 1967 US documentation. Modern transistors such as the 2N2222 can be used. The circuit acts as a shield.
The 4093 or any other NAND gate can be used for the very sensitive configuration of a R-S...
This circuit was obtained from Radio Electronics magazine of June 1964. The SCR may be a modern...
This circuit causes an LED to flash if the monitored voltage exceeds the value set in the pot. The...