parallel chokes in a power supply
On Mar 18, 2:17*am, Don wrote:
I need opinions on the use of two chokes in parallel in an otherwise
standard Pi type filter. *c - L//L - c
Assuming nearly identical chokes, ie, same part number and
manufacturer, will there be any problems?
I know the combined parallel inductance and resistance will be one half
that of a single choke, and the current capacity will be doubled.
Will one choke "take over" and burn out?
I have "space in the chassis problems", so I can't use one big choke.
-Don
Two parallel chokes in a CLC supply should have nearly equal winding
resistance so the heat generated in each is the same.
If they have equal inductance, the total L for 2 becomes half the
value.
Total L= 1 / ( 1/L1 + 1/L2 )
Would you still have enough L if you parallel 2 chokes?
The Vac across the chokes causes negligible winding heat.
Patrick Turner.
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