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.
Created to serve as a booster for TV signals in the UHF band, this circuit was found in the March...
Higher power for an operational amplifier can be obtained with a step with complementary output. The...
This circuit generates rectangular and triangular signals up to a few megahertz. The circuit is...