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MMC Design UK Bulk Order
>11 x 1600V 47nF caps in series
>with 4 strings in parelel. 10Mohm resistors across each cap for safety.
11 in series for 10kV AC should be fairly bullet proof
>I intend to use Philips 378 or 376 series caps, from farnell.<
I've been doing some tests with the Axial 47nF, 1500V from LCR
from Farnell its 5+ 46p, 25+ 0.40p 100+ 0.35p
dv/dt 2000V/uS. A string of 4 alongside my 0.067uF cap withstood
The philips 376 would be ideal - dv/dt 10000 V/uS
but the value we want isn't there - closest is 47nF at 1000V 54p 100+
philips 378 series 47nF 1600V dV/dt 900 V/uS
I would go for the 22nF 1600V dV/dt 1600 V/uS that dV/dt has to
be doubled in comparison to the 47nF (twice as many strings)
I've also got some 47nF 1500V from RS, axial by Acrotronics,
which are physically very similar to the Farnell ones, dV/dt 1800 V/uS.
Ritchie has been getting good results from these.
I'm hoping to abuse mine soon!
they are 35p at 100+ but I'm trying to get together a bulk order for 1000
25p if enough folks are interested. Email me directly if you are
Hopefully folks will come to Corby to pick them up so that I don't have
to make up parcels.