[TCML] (TCML) MOT to MMC

[Tesla <tesla@xxxxxxxxxxxxxxx>]

Hi

IMHO the use of MWO caps and diodes arranged to have similar ratings and 
values as the original cct is practical and cost effective. I personally had 
some reservations about the chokes used in that design as not being able to 
maintain 7.5Hy at the currents encountered and strongly suspect the 
inductance of those 4 in series would be considerably less at the charging 
current peaks . The cheap and practical approach IMHO is to use slightly 
gapped  MOT secondary's as inductors. I used two un-gapped MOT secondary's 
in series in my version.

I note the diodes used in the original were 1N5403 types (1kV PIV 3A) not 
1N4009 as you suggested, those diodes are rated at 25v PIV.  There is a 
possibility that the considerably lower 0.5 amp rating of the MWO diodes 
could be an issue. My version used 20 1N4007's in series for the DC diodes 
without any resistors or capacitors across them and the D-Qing array had 24 
in series.

I believe MWO caps can withstand short periods of stress at several times 
their rated voltage  and all the MWO caps I've found have an internal 
bleeder included. I would welcome feedback from others about their life if 
stressed that far in operational designs.

Ted in NZ

-----Original Message----- 
From: vatercox@xxxxxxx
Sent: Monday, April 16, 2012 1:52 AM
To: tesla@xxxxxxxxxx
Subject: [TCML] RE:RE(TCML) MOT to MMC


with regard to the schematic shown in 
http://scopeboy.com/tesla/tc2schem.html is there any reason why the four 
1n4009 diode/snubber cap/ resistor chains cannot be replaced by four HVR 3xT 
or equivalent microwave oven diodes rated 9kv 500ma continous plus six 
microwave oven capacitor -two in the input (from the MOT) and four in the 
output of the voltage quadrupler -with appropriate bleeder resistors. Would 
this not make for a tidier assembly?

Jolyon
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