1-minute delay (CB21408E)

This circuit with PUT is from a 1967 General Electric manual. The relay must have voltage according to the supply.

800 Hz Pulsed Tone Generator (CB25519E)
This circuit is recommended for alarm systems since it has a good output stage. The circuit is...
Gain 150 000 amplifier (CB6636E
) Suggested by Philips in a 1968 documentation this circuit has very high 10 ohm on-load voltage...
7 W amplifier (CB8946E)
No information is given about the transformers in this circuit suggested by Motorola in a 1968...