This super regenerative detector circuit was found in an English documentation from 1963. The coil is frequency compliant. The transistors are germanium of the time.
This circuit, from 1988 documentation, allows the use of 15 to 60 W dimmed lamps without the need...
This good quality audio amplifier with an output of about 10 W with the original transistor was...
This circuit is from the LM3914 manual and can be found elsewhere on this site and from other...