With a unijunction transistor and a tunnel diode it is possible to obtain rise times of 1 ns with the circuit shown in the figure. The circuit is from a 1965 Electronic Design.
This protection circuit for standing waves was found in a manual of high frequency circuits and...
We found this circuit in a Popular Electronics of the 80s. Used integrated circuits are uncommon...
This experimental circuit with Nixie tube was found in the Radio Electronics magazine of March...