This commercial receiver from the year 1958 uses two AA cells as Power supply. The circuit is intend to receive MW station and the transistors are germanium types not easy to find today.
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...