We found this tube receiver in a 1950s Japanese publication. The circuit uses 5 tubes and has an RF amplifier stage for greater sensitivity. The power supply is not shown on the circuit.
SAM D5x and E5x MCUs Provide Powerful Performance and Enhanced Security Features CHANDLER, Ariz.,...
This circuit compresses the dynamic range (amplitudes) of an audio signal. The circuit is passive and...
We found this circuit in an old Linear Technology manual. It makes use of the LTC1329 and can be...