This circuit is from a 1965 General Electric manual. It uses components from the time that admit equivalents. The SCR can be the TIC106 and the LDR of any type.
This circuit was found in an American documentation from 1969. It serves to trigger circuits by...
This input stage has unit gain but a high input impedance and low output impedance. The circuit is...
The circuit presented was found in the Linear Applications Handbook of the National Semiconductor of 1994....