This very simple amplifier was found in the Philips Databook of 1990. The circuit is suitable for headphones and other battery powered applications.
This simple transistor amplifier is from 1982 documentation. The output transistor must be mounted on...
We found this frequency meter circuit in a 1974 documentation. The circuit is powered by 12 V and...
Found in Radio Electronics from the 90s, this circuit has several outputs with different pulse...