This circuit was found in documentation from the 90s. The operational amplifier admits an equivalent. The circuit has frequency ranges up to 5kHz determined by R1.
Using an operational amplifier of the time, this circuit was obtained from a 90s Radio...
Equivalent transistors like the BC548 can be used on this 1969 Mullard circuit. The circuit has two...
This circuit is from 1995 documentation. The power depends on the transformer, which in this case...