Found in the September 1998 issue of Electronics Now, this circuit uses an encoder with reed switches. The circuit indicates the position of a “indicator” and thus the direction of the wind.
Found in a Philips documentation from 1968, this circuit detects the trimpot set input voltage....
This circuit can be connected to the output of alarms or sirens with the 555, CMOS or TTL,...
This simple capacitor tester, already covered in other articles in this section and on the...