This small receiver for the medium wave range was found in Radio Electronics magazine from July 1958. The circuit is for listening to headphones and powered by batteries.
We found this circuit in a publication on operational amplifiers from 1978. The circuit is made...
This circuit was found in a Philips documentation from 1970. The components are of the time,...
Found in a 1967 documentation this circuit can be applied to any operational amplifier. Components...