Suggested by a 90s Radio Elecrtronics, this circuit is intended to supply mobile equipment of the time. The transformer data is given next to the diagram.
This precision full-wave rectifier used in instrumentation was found in a technical documentation from the...
In the figure we have the way to control the frequency of an oscillator with a NE602 using a...
This filter was found in a publication for radio amateurs in 1977. The components can be changed for...