This circuit was found in a Motorola documentation from 1975. Modern equivalent transistors such as the BF245 can be used. The circuit is powered by 9 V voltage from cells or batteries.
This circuit provides a signal that is twice the frequency of the input signal. The circuit was...
This unusual amplifier configuration is from 1986. The circuit has a high resting current given the...
This circuit is from an 80's American documentation. The circuit uses components of the time which...