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Old 26th January 2007, 08:17 AM   #11
sajti is offline sajti  Hungary
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Old 26th January 2007, 09:14 AM   #12
Merlinb is offline Merlinb  United Kingdom
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Quote:
Originally posted by nhuwar

Does anyone remimber off hand the formula for figuring minimum required capatitance for stated ripple I cant find it in my arrl book?
C = (t * I) / V

Where:
I = average load current drawn
V = ripple voltage peak-to-peak
t = duration between charging cycles and is equal to: 1/mains frequency.
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Old 26th January 2007, 09:33 AM   #13
EC8010 is offline EC8010  United Kingdom
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Quote:
Originally posted by Merlinb
t = duration between charging cycles and is equal to: 1/mains frequency.
If it's full wave rectification, then twice mains frequency.
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