This windshield wiper interval switch was found in the April 1990 issue of Radio Electronics magazine. The circuit uses integrated circuits that are still readily available.
This circuit provides a multiplexed signal to be applied to the input of an FM transmitter. The...
This simple TTL circuit indicates which was the first to press one of the four pressure switches. The...
We found this circuit in a documentation from the 90s, which can be adapted in most cars of the...