We found this circuit in an article that describes several alarms that are in the sequence in our section. The article is from the Radio Electronics magazine of May 1971.
This circuit was obtained from a Popular Electronics of 1994. The magazine no longer exists in its...
This circuit is from Motorola documentation on 1976 power devices. SCRs are powered according to...
This latching alarm using SCR was found in a Popular Electronics from 1992. The circuit triggers a...