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.
This is a voltmeter with high input resistance. The transistor is germanium. We found it in an...
Found in old American documentation, the components used are still common. The circuit directly...
This circuit was found in an Electronics World magazine from 1990. The circuit can be mounted...