RE: MMC Caps

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Ted Rosenberg by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Ted.Rosenberg-at-radioshack-dot-com>

Dave:
An RQ gap, made generally of copper sweat coupling tubes arranged in a
circle or side by side linearly, is essentially a static gap (nothing is
moving). A static gap can use a total value of slightly more than resonant
but it does not require LTR to be efficient.
An SRSG, Synchronous Rotary Spark Gap, is generally 120 breaks per second
and requires a Larger Than Resonant value. In a 15/60, for example, resonant
is .0101 µF. Slightly LTR is .0117 (which is what I have been using with my
static gap). But now that I will be using a triggered gap, which is 120 BPS,
I am switching to a value of .028µF which is LTR.

All of the above assumes a 60 Hz mains.

Hope this makes sense.

Saftey First

Ted

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Wednesday, August 29, 2001 1:13 PM
To: tesla-at-pupman-dot-com
Subject: MMC Caps


Original poster: "David Boss by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<d.boss-at-Center7-dot-com>

I'm saving up some money to buy the GeekGroups MMC Caps but I have a
question regarding the table on their website.  The table has three columns:
resonant cap, static gap LTR cap, SRSG LTR cap.  I understand the difference
between static and SRSG but what does LTR mean and how many would I need?
I'm running from a 12k 30ma NST with a RQ spark gap.
Thanks
Dave