Re: Multiple toroid capacity

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Dr. Resonance by way of Terry Fritz <teslalist-at-qwest-dot-net>" <resonance-at-jvlnet-dot-com>


Due to the "shielding effect" when multiple toroids are used the value is
always less than the value of two separated individual toroids added
together.  With two toroids a rule of thumb is you deduct from the total
separate added capacitance approx. 50% of the value of a single toroid's
capacitance.  This will give you a good ballpark figure assuming both
toroids have the same physical size.

If the sizes are different then it's usually easy just to measure the total
with a Wavetek or equiv. meter.

Dr. Resonance

Resonance Research Corporation
E11870 Shadylane Rd.
Baraboo   WI   53913

 > When running stacked toroids on a coil, how is the total combined
 > capacity of them calculated?  Surely it isn't as easy as adding
 > together the individual capacities...or is it?