Author Topic: Get it right!  (Read 4674 times)

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Offline rossw

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Re: Get it right!
« Reply #15 on: March 01, 2012, 04:30:26 pm »
Oh hell, I get your point now Ross.  Regarding the 100% duty cycle. 

Yes, just pointing out that a great many diodes are rated for their half-wave, sinusoidal current - a totally different animal.

Quote
What about these instead of a schottky?

Well, first off - the bulk of the reason I used schottky in the first place was the lower V(f). Double the V(f) and you double the power the device has to dissipate. So the diode with the lowest forward drop that'll do the job, is the best option for the job IMHO.

Second - the device you quoted, claims 16A - however the tech specs say:
"Average Rectified Forward Current Per Diode, (Rated VR), TC = 150C"  .....  8A

In your case, the DC current IS the "Average Rectified Forward Current"

You could use either device - but if you want some safety margin, I think I'd be using both halves of a pack PER ARRAY, whichever device you settle on.

Offline Watt

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Re: Get it right!
« Reply #16 on: March 01, 2012, 04:41:19 pm »
Thank you Ross.  I can stand to shed a few volts at times to keep within the classics voc rating but, I will resort to that if I have to.  I think I will just double the number of schottky diodes and use two per array at a 10 amp rating.  Thanks again for your time.
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