Volume expander amplifier (T364E)

This circuit was found in the 1961 RCA tube manual. The circuit includes a power supply stage.

Power Supply Using a Burned Transistor (NI019E)
Medium and high power partially burned can be used as diodes in a simple Power supply as shown in...
Beep For Flasher (CB4340E)
This circuit adds a beep to turn on with car flashers that do not have this feature. A 47 ohm to...
Infrared Transmitter (CB4605E)
This transmitter generates modulated infrared radiation and can be used as the basis for a remote...