This circuit was found in a 1964 Electronic Design. The components are of the time, and modern equivalents can be used. Note the multi-emitter transistor.
This circuit was found in the July 1969 issue of Radio Electronics magazine. It also appeared in...
This circuit can function as a high-power shield completely isolated from the power grid. We found...
This circuit has as a critical component the transformer that has low voltage windings for the...