07-15-2014, 09:09 PM
OK,
so the current through your 280 plus 70 is roughly the same as the current through the field coil.
Take the sch document, deduct B+ (SG of 41) fom the table from the 84's K voltage, and divide it by 2000, this is you current.
Use I-square times R to detemine your 280 and 70 dissipation, use comfort factor of two or more to determine ratings.
so the current through your 280 plus 70 is roughly the same as the current through the field coil.
Take the sch document, deduct B+ (SG of 41) fom the table from the 84's K voltage, and divide it by 2000, this is you current.
Use I-square times R to detemine your 280 and 70 dissipation, use comfort factor of two or more to determine ratings.
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