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.
The National Semiconductor LM675 operational amplifier can provide up to 3 A of output current. In the...
The idea of this circuit is that when the device in SO1 is turned on, the device connected to...
This transistorized receiver was manufactured in the 1960s and distributed worldwide. The diagram is...