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.
We found this telephone amplifier in a European publication from the 1980s. The transistor can be...
This circuit is one of many that we have in our section. It was taken from the Electronics...
This circuit is from a 1980s Motorola documentation. The circuit can be set to fire from 60 to 120...