This circuit was found in Motorola documentation from 1966. The lamps are according to power and current according to the components used which are uncommon today.
This circuit allows to increase the output power of a 741 as an amplifier. The circuit is from a...
This high voltage circuit was found in a 2005 Linear Technology application manual. The circuit...
This circuit for multiple sound inputs was found in a Radio Electronics from January 1992. It...