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.
This sensitive microammeter was found in documentation from the 1980s. The accuracy of the circuit...
This circuit produces modulated tones in a loudspeaker. The effects can be adjusted by the...
We found this circuit in an old documentation from the 70s. The circuit can use any varicap and...