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.
In the figure we have a regulator circuit for output voltages of 0.5 to 10 V with currents up to...
This transmitter influences an oscillator that modulates the transmitting stage and at the same...
We find this simple circuit in an English publication called Electronic Circuit Design on spring 3 of...