From: Marco Denicolai
Date: Wed, 27 Jun 2001 13:27:22 +0300
Subject: Re: [TSSP] Toroid breakdown voltage indirect meas.
Hi Paul Paul wrote: > > Marco Denicolai wrote: > > > - Feed voltage 18 kV or less (i.e. toroid 585 kV or less): no streamers, > > NO CORONA anywhere. > > - Feed voltage 18.35 kV or more (i.e. toroid 598 kV or more): streamers, > > NO CORONA anywhere. > > Marco, > > This is interesting. Could you let me know your primary tapping > point and primary cap size? Primary tap at 7.5 turns, primary cap is 0.0967 uF. >My simulations, so far using guesses > for these numbers, lead to generally around 450kV for 20kV feed. > > Amazing how suddenly the streamers appear. Does further increase > in feed above 18.35kV increase the streamer length, or does it > increase their number or brightness? I don't know, because at this operating point I am at the limits of the CCPS: 1 - The CCPS max output voltage is 20 kV 2 - To go higher than 18.5 kV I have to decrease the bang rate, otherwise the CCPS has not enough time for charging between bangs. Now you surely understand why I used to place a copper rod on the top of the toroid to decrease the leader threshold voltage. Cheers -- _____________________________________________________________ Marco Denicolai Senior Design Engineer Tellabs Oy tel: +358 9 4131 2769 DSL Products mobile: +358 50 353 9468 Sinikalliontie 7 fax: +358 9 4131 2410 02630 Espoo FINLAND email: marco.denicolai@tellabs.com _____________________________________________________________
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.