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Solenoid is Pulled High to 24V, Freewheels Low to a Schottky Below Ground

The large input common mode range of the LT6105 makes it suitable for monitoring currents in quarter, half and full bridge inductive load driving applications.This circuit shows an example of a quarter bridge. The MOSFET pulls down on the bottom of the solenoid to increase solenoid current. It lets go to decrease current, and the solenoid current freewheels through the Schottky diode.