This type of configuration can be seen elsewhere in this section. This is from a 1965 General Electric Hobby Manual. The circuit applies to most modern triacs.
This circuit is from a 1980s Motorola documentation. The circuit can be made with modern...
This well-known circuit triggers a relay when light striking the phototransistor is cut off. The...
This circuit generates a pulsed tone whose frequency depends on C2 and whose flashing depends on...