This circuit was obtained from the March 1994 Electronics Now magazine. The circuit uses a common transistor which can be a low noise type such as the BC549.
This circuit was obtained from a Radio Electronics magazine from June 1969. The circuit uses a...
This circuit synchronized by the power grid can be used as a shield. We found it in an 80's...
This well-known circuit is another version of a 2-transistor transmitter found on the Internet. In this...