This circuit was suggested by a 1967 General Electric manual. The waveforms of the generated signals are shown next to the diagram. Equivalent modern SCRs can be used.
This circuit is from a Popular Electronics from 1992. It uses two SCRs and can be triggered by...
This is the transmitter for the previous circuit. We found it in a 90s Electronics Now. The...
For reference only, this is the second IF amplifier stage of a common transistor radio from the...