[ARC5] An "Extra Class" Question:

[David Stinson]

I have really messed this thread up!
You got it exactly right, Mike.

Sorry, guys.  I was intending to get fresh insights on
a problem, so was intentionally vague, but that didn't
work-out so well.  Please let me explain.

I meant "Extra Class Question" in the sense of it
being the sort of question one might see on the test,
not that it actually was.

Here's the situation:  the AN/ARC-5 MD-7 modulator
has a G.E. "Thyristor" across the secondary which damps
modulation excursions over 300 V RMS.
I'm rebuilding an MD-7 for a friend which had a blown
mod. transformer.  It was blown because yet another 
doofuss decided to whack it out of the modulator,
break off the mounts for it and doubtless try to modulate
his pair of  P-P 813s with it.
I've got the modulator restored and worked except that
the "Thyristor" and its mounts are missing.  
It was dumb luck that I found a replacement 
modulation transformer and finding another is unlikely,
should this one blow from not having the device installed.

At the moment, I have two series-connect 200 V MOVs
across the secondary.  
This is unsatisfactory because that's 400 Volts, not 300.   
Are MOVs rated RMS or Peak anyways?
I probably knew 20 years ago..... 
And can you series them?  Like a 200 and a 100?

Whatcha think?