Invention Grant
- Patent Title: Pulsed coil drive circuit for a sampled inductive transducer
- Patent Title (中): 用于采样感应传感器的脉冲线圈驱动电路
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Application No.: US11867908Application Date: 2007-10-05
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Publication No.: US07880462B2Publication Date: 2011-02-01
- Inventor: Hans Ulrich Meyer
- Applicant: Hans Ulrich Meyer
- Applicant Address: HK Central
- Assignee: Advanced Sensor Technology Limited
- Current Assignee: Advanced Sensor Technology Limited
- Current Assignee Address: HK Central
- Agency: Leydig, Voit & Mayer, Ltd.
- Main IPC: G01B7/14
- IPC: G01B7/14

Abstract:
A pulsed coil drive for a sampled inductive transducer has at least one drive coil connected in a series circuit with a capacitor having a first terminal connected to the negative terminal of a voltage source. The series circuit is normally open during the intervals between pulses. Sampling occurs once per pulse. Each pulse's sampling interval is preceded by a pre-sampling interval and followed by a post-sampling interval. The supply voltage that is applied across the series circuit during both the pre- and post-sampling intervals is applied by switching a first terminal of the coil's free terminal to the voltage source's positive terminal through a p-channel MOSFET. During the sampling interval, the series circuit is shorted by switching the coil's free terminal to the voltage source's negative terminal through an n-channel MOSFET.
Public/Granted literature
- US20080084203A1 PULSED COIL DRIVE CIRCUIT FOR A SAMPLED INDUCTIVE TRANSDUCER Public/Granted day:2008-04-10
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