5-tube 3W Amplifier (T478E)

This circuit was obtained from a 1947 amplifier manual. The circuit makes use of a transformer source, but it can also be battery powered.

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40m Band CW transmitter (CB17666E)
This circuit, found in a 2008 documentation, is intended for operation by radio amateurs in the 7...
Stereo FM Transmitter (CB16538E)
This small FM transmitter for short distances has a stereo multiplexer and can be used over an...
15V symmetric power supply (CB21188E)
This circuit was found in a Radio Electronics from the 90's. The maximum current is 1 A. | Clique...