Found in Popular Electronics from the 90s, this circuit is intended for a radar emitting pistol. The circuit is very critical for the frequency at which it operates.
This switched stepdown regulator was found in a 60s documentation. It makes use of unusual...
We found this active crossover in a Radio Electronics magazine from June 1961. Note the different...
This spot gun or spotlight for cars with a distributor (old models) was found in a publication from the...