This 1968 EC&G circuit generates high voltage pulses for firing a gas LASER of the time. The components are rare nowadays.
This lead-acid battery charger was found in a Popular Electronics from the 90s. The circuit has a...
This three-chanel remote control transmitter uses a unijunction transistor as low frequency...
This circuit was found in the 1990 Motorola Linear Databook and can use almost any operational...