This circuit was obtained from Linear Technology documentation from the 80's. Powered by 5 V it can be used as a shield. The components are from the era.
May 2017 - Mouser Electronics is providing Murata MHM306, 305 and 500 ionization and ozonation...
Relays from 20 mA to 200 mA can be driven by this sensitive circuit.6 or 12 V relays can be used...
This circuit uses two sensors that are placed at the intersection of a miniature railroad, causing the LED...