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Author Topic: Ameritron AL 811H - loud snapping sound  (Read 5049 times)
AE6YB
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Posts: 26


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« Reply #15 on: October 19, 2015, 02:21:11 PM »

I have secured the bead and still happening, but is it possible that the problem is the bead is touching the conductor printed on the board underneath it?
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K8AXW
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Posts: 7039




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« Reply #16 on: October 19, 2015, 07:58:50 PM »

Quote
is it possible that the problem is the bead is touching the conductor printed on the board underneath it?

That potential problem should be easy enough to solve!
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A Pessimist is Never Disappointed!
W1BR
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Posts: 4189




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« Reply #17 on: October 20, 2015, 09:48:56 AM »

As in any series circuit, increased total ESR = decreased ripple current. The same voltage divided across more capacitors x decreased ripple current = less dissipation (and less heat).

I suspect in practice, this would be a "wash."  Ripple current remains the same, regardless of the number of caps in a series circuit.  The more caps, the higher the C value needed for each cap in the string.     And, to be correct, one needs to examine the specifications for the capacitors being used.

Pete
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N0XWR
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Posts: 24




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« Reply #18 on: October 20, 2015, 06:48:57 PM »

I am not sure about issues with the ferrite bead spoken about earlier.  I do know that the advice of
Bill, Peter and Lou was spot on for me.  This AL811 had an open bleeder.  New caps and bleeders and all is well.
Thanks to an insightful and experienced group.  73s  Jerry N0XWR
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