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Post by peter guglielmo on Sept 23, 2015 18:03:49 GMT -8
hi all, in the course of building the mosfet inverter project, gary makes reference to rewiring a MOT. in the process of rewiring it, one cuts off the hv secondary winding. also included in the transformer core are two magnetic current shunts. what are they? what are their purpose and should they be removed when rewinding the secondary. thank you for your time. pete g
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Post by Gary Lecomte on Sept 26, 2015 6:12:06 GMT -8
Yes you Must REMOVE those 2 Current Shunts.
In this transformers Normal Mode of Operation in a Microwave, They Prevent Excessive Current Draw.
(Even with the Output Totally Shorted Out.)
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Post by peter guglielmo on Sept 26, 2015 12:41:35 GMT -8
oops! I didn"t take them out and have already rewound the transformer(to be used in a car battery charger) for 20 volts. should I unwind and remove them?
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Post by Gary Lecomte on Sept 26, 2015 14:35:04 GMT -8
Yes they Should be Removed.
What Output Voltage do you want from the Inverter?
110 VAC to run your charger?
If so, your Winding should be designed for about 10 Volts on that 12 volt Primary.
What Size of Wire did you use on that winding?
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