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 standard lamps consist of features of great importance for the test and repair bench. It is...
This good power amplifier was found in a Japanese magazine from the 1970s. The circuit uses...
This circuit for incandescent lamps was found in a 70s documentation. The circuit uses an SCR...