This circuit was suggested by Sprague Electric in an 80's documentation. The circuit uses a tachometric sensor for feedback. The current was not indicated in the original documentation.
The basis of this circuit is a National Semiconductor operational amplifier that functions as a...
This circuit for 12 V relays was found in the July 1992 Radio Electronics magazine. The circuit is set...
This circuit, which can be used as a shield, was found in a 1980s documentation. The circuit can be...