This circuit was found in a 90s Radio Electronics. MOSFETs must have excellent heat sinks and heat and the board layout carefully planned to withstand high currents.
This is an amplifier stage with a typical germanium transistor from the 60's to the 70's. The...
Also suitable for use as a noisy alarm, this Morse Code or telegraph practice oscillator was found...
This circuit was found in ancient American documentation. Diodes are general-purpose types. |...