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.
We found this circuit in an 80's manual. The same configuration can be adapted to make use of...
This circuit uses a 7-segment display to indicate the logic level of a test circuit. The power...
This General Electric circuit was found in a 1964 documentation. The circuit triggers a relay when...