In this 2001 circuit we have the way to trigger an SCR with a phototransistor. The circuit appears elsewhere in this section, obtained from publications from different eras.
With a gain of 20 dB, the circuit presented can amplify signals up to 450MHz. The integrated...
This basic circuit was found in the March 1998 issue of Electronics Now magazine. The circuit is...
This circuit is from 80s documentation and makes use of common operational amplifiers. The...