Re: [TCML] Bleeding resistors for MMC

[jimlux <jimlux@xxxxxxxxxxxxx>]

Brandon Hendershot wrote:
> For t=RC, what are the units for Capacitance? nf, uf, etc? Also, If I'm 
> using a 10M ohm resistor, would I use 10 for the value of R, or 10,000,000?
> Thanks Tyler,
> Brandon

R in ohms, C in farads.
Or, more conveniently, R in Megohms, C in microfarads.  (the 1E6 on one 
cancels the 1E-6 on the other)


for the popular 0.2 uF or 0.15 uF caps in MMCs, 10 Meg gives you a time 
constant of a couple seconds, so in 5 or 6 time constants, you're way, 
way down, voltage wise.

And, 10 Meg doesn't dissipate huge power at 2kV  (2E3*2E3/10E6 = 0.4 Watts)

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