This driver for audio signals using the TAA435 integrated circuit was found in Philips 1968 documentation. The integrated circuit is difficult to obtain today.
In the figure we have a wireless wiretapping circuit for the frequency range determined by L1. For FM...
This voltage follower or amplifier with unit gain uses an unusual operational amplifier nowadays. The...
Found in a 90’s Electronics Now, this circuit has its output connected to an audio amplifier. The...