This single trigger circuit has been indicated for photography applications. The circuit is from a 1964 Electronics World. The transistor is general-purpose and the SCR can be of any type.
This circuit was found in a 1980s documentation. It decodes by identifying a certain frequency tone...
The purpose of this 2000 documentation circuit is to decode SSB (BLU) signals to be audible on...
This circuit was found in Electronics Handbook, Vol XIII 1993 and consists of a simple direction...