We found this circuit in an American documentation from the 80s. In it we have the way to control the amplifier gain by an input voltage.
This circuit is from the Motorola Linear Databook of 1990. The circuit controls a Triac from a...
This circuit was obtained from Maxim documentation. The circuit has 4.5 and 5.5V thresholds for...
This circuit for high power xenon lamps was found in the November 1974 issue of Radio Electronics...