This automotive circuit was found in the September 1992 issue of Radio Electronics magazine. The circuit directly drives a relay that must have a coil resistance greater than 65 ohms.
Written in an article in Radio Electronics magazine in April 1987, this circuit triggers an alarm...
This is the receiver circuit for the previous transmitter. The circuit has a programming key to...
This is an example of a temperature sensor shield using the Texas Instruments TMP390 obtained from...