Taken from a 1967 RCA publication, this circuit maintains a low current in the battery when it is charged. The components are from the era.
This circuit for igniting gas flames was found in a 1967 Electronic Design. The SCR firing device is a...
This circuit was found in an 80's documentation using an NE5514, operating at the time. The font...
This circuit uses three inverters to generate a rectangular signal whose frequency depends on R1...