It is an improved version of the previous circuit with a voltage follower that reduces the load impedance. The circuit was found in American documentation from the 1980s.
Found in an older Radio Electronics, this circuit generates signals that can be used with regular...
This circuit was obtained in a manual of operational amplifiers of 1973. The circuit uses...
This is a battery powered 3W power amplifier using germanium transistors. The circuit is from an...