This circuit was found in a 1965 General Electric manual. What it does is give a warning if you leave the vehicle with the headlights on or lights inside.
This circuit uses two TTL trigger inverters to generate signals that can be adjusted at R1. The...
These reset circuits when the power is turned on were found in an 80's EDN. The circuit also...
This stage was used in old audio ampliiers and radios from the 1950s and 1960s. It uses one of the...