On http://www.autosite.com/garage/encyclop/ency04b.htm I found: The Hall principle states that if a constant current flows through a thin conducting material, and that material is exposed to a magnetic field, voltage will be generated, and the amount of voltage will depend on the strength of the field. In an ignition system, this phenomenon is put to work by the action of a shutter wheel in the distributor that interrupts the field created within the Hall generator by a permanent magnet (this is mounted across an air gap from a magnetically conducting element with a thin semiconductor layer). The wheel has as many shutters as there are cylinders, and they can be compared to the flat spots on a distributor cam. The ignition control unit is designed to supply current to the coil's primary winding while the shutter wheel is blocking the field. When the shutter moves out of the way and Hall voltage is produced, the control unit cuts off primary circuit current, the coil's field collapses, and induction produces high voltage in the secondary winding. Check for more! Helmut '80 Camper ---------- >From: us014471 To: Multiple recipients of list Subject: i dont know! Date: Friday, 20 Sep, 1996 2:41 so What is a hall generater??? Dave wr3i 86 westy (many many miles)
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