Gents
Well b4 Tony, W4ZE passed away, he gave me the mouser part # for superb
100 k 3 watt mof EQ resistor's, used across all my lytics in HV supplies.
They are rated at 1 % Tol... and come 100 per box. I bought 3 x box 's of
em.. and all 300 of em measure EXACTLY 200 ohms below 100 K [different lot
#'s too]
IE: They are ALL .02% on the low side. [ 99,800 ohms] They are also 50
ppm per deg C types.... and have a 500 vdc rating. Tony found em buried in
the
online Mouser catalog. Tony got fed up with playing..."match-up" all the
time... and wanted eq resistors with better tol to start with.
These ones are superb..,.. just grab em at random.. no need to muck about
playing matchup. We used sta-kon terminals on each end, hole type, not a spade]
and simply crimped em... then soldered em as well. These are used with
10-32 machine screw connections used on a lot of lytics.
We have also used em on 3900 uf lytics. that use the larger 1/4-28 machine
bolts. Also used on CD brand lytics, [ 400 series], that have the pins out
the top... in which case the resistor
[and also the RVS connected 6A10 safety diode] are simply wrapped and
soldered.
Mouser cat # CPF-31003FB14
VISHAY # CPF3100K00FHB14
Cust PN 71-CPF3-F-100K-T2
The kicker is.... when you measure the DC voltage across each individual
cap, with a HP dvm / fluke DVM, they are all the same dcv ! Be very
careful if you do that test. For test purposes only
I measure just a few of em at the cold end of a string.
Later....... Jim VE7RF
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