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Forum: Fossil Fuel Free

05-10-2012, 09:47 PM

Replies: 3,480

Paul and Sabrina's Cheap 3 Phase Inverter (AC Controller) with Field Oriented Control

Views: 914,832

Posted By drbobwoolery

If the current sensors are not too high, actually...

If the current sensors are not too high, actually measuring all three, and seeing that they add to zero may be the easiest way to detect a number of parts failure faults at once. Whenever the three...

Forum: Open ReVolt: open source DC motor controller

03-14-2010, 12:38 AM

Replies: 7,381

Sticky: Paul & Sabrina's cheap DIY 144v motor controller

Views: 2,408,324

Posted By drbobwoolery

Paul, have you considered getting 16 oz dead soft...

Paul, have you considered getting 16 oz dead soft copper flashing and gluing it on each side of a piece of bare fiberglass or carbon fiber? Since you can mill the open spaces, the thickness of the...

Forum: Fossil Fuel Free

11-27-2009, 11:02 PM

Replies: 542

Paul & Sabrina's Cheap EV Conversion

Views: 205,251

Posted By drbobwoolery

noting the mention of using 00 copper as a shunt....

noting the mention of using 00 copper as a shunt. The TC of copper is just over 1/3 % per degree C. I begged some Manganin from a metals supplier and made a couple of shunts to send to Paul. I...

Forum: Open ReVolt: open source DC motor controller

10-11-2009, 04:52 PM

Replies: 7,381

Sticky: Paul & Sabrina's cheap DIY 144v motor controller

Views: 2,408,324

Posted By drbobwoolery

Paul, check out AD623 for the shunt amplifier. ...

Paul, check out AD623 for the shunt amplifier. You should have two shunts in the mail in the next few days. Don't be dismayed that the first is so big; that's for testing. The second fits between...

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