Found in a 1967 Electronic Design, this transistorized circuit compresses and then expands a pulse. The circuit has a double adjustment and the transistors are of the time.
This shield circuit was suggested by a 90s Popular Electronics. The circuit can use either a triac for a...
Circuits similar to this can be found in this section. This is from 1967 General Electric...
Using neon lamps, this circuit from a 1969 publication provides 17 V of maximum voltage or else...