An article in Radio Electronics magazine from November 1958 showed the construction of this tube audio oscillator. Note the use of lamps as a stabilizer to obtain better sinusoidal signals.
This circuit was found in documentation from the 70s. The transistors are from that time, but the...
Epcos TDK TB2569 Film Capacitor EPCOS / TDK offers through Mouser Electronics are line of film...
A very interesting integrated circuit for step-down converter designs (voltage reducers) with an...