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 also makes use of a field effect transistor (JFET) which can be the BF245 and has an...
We can use this circuit to connect low impedance microphones and even small speakers used as a...
When S1 is in 1, the circuit operates with of half the total power applied to the load. When in...