This circuit is from an American transistor book from the 60's. The transistor is germanium of the time.
This circuit is from a Radio Electronics from 1950. The transistor was still new and called a...
This low power metronome produces pulses in a small loudspeaker. Pule rate is adjusted by P1 and...
Found in 1967 General Electric documentation this circuit appears elsewhere in this section. SCRs are...