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Solenoid Current Monitoring

2015-01-22 00:55  
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View Full Size Image View Original Design NoteSolenoid Current Monitoring

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.

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