Operated directly from the power grid, this detector was found in an 80's RCA documentation. The sensor is an ionization chamber. The SCR triggers a warning siren.
This circuit was obtained from an 80's documentation from General Electric. The circuit uses an...
July 2017 - The new Surface Mount SM0402xx LEDs from Bivar can be found on Mouser. The new...
Found in a 90s American documentation, this circuit that was used in cars of the time, detects low...