This unijunction transistor circuit was found in Radio Electronics magazine from July 1968. The circuit operates up to approximately 100 kHz depending on C1.
This circuit is recommended for alarm systems since it has a good output stage. The circuit is...
) Suggested by Philips in a 1968 documentation this circuit has very high 10 ohm on-load voltage...
No information is given about the transformers in this circuit suggested by Motorola in a 1968...