This circuit is intended to detect when current flows through the opening of a car door. The circuit fires the horn for 90 seconds. The FET can be the BF245 and the NPN transistors can be the BD135.
Suggested by Amperex in 1968, this circuit is intended for hearing aids. The integrated circuit...
This "debouncer" was found in Popular Electronics, using TTL technology. For this reason, it can be...
November 2016 - Lumileds' new high power Luxeon 5050 LEDs can now be purchased from Mouser...