This 6-transistor commercial radio with 6 V supply was found in a Japanese publication from the 1960s. The circuit is a commercial superheterodyne with 150mW to 200mW of battery powered output.
We found this circuit in the 1990 Philips Databook. The circuit is a commercial application of the...
This low power circuit was obtained from an American 80's documentation. The circuit indicates the...
This circuit was obtained in an old Elektor and can be adapted to use white power LEDs. The...