[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [TCML] MOT ballasting options
It would be good to stick to capacitors or inductors for ballasting, since
they don't dissipate any power (ideally). A resistor such as light bulbs or
salt water will reduce the power available from the source. It would only
be practical for small coils. The most efficient resistive ballast would
dissipate half the power in the resistor and half in the TC. Using a DC
supply and controlling the firing rate is probably the best ide, needing no
ballast. Have to watch out for the large energy storage in the C-W
capacitors, though.
BTW, the rectifier circuit in the drawing is a center-fed Cockroft-Walton.
---Carl
-----Original Message-----
From: Jim Lux
Sent: Wednesday, January 02, 2013 8:53 PM
To: tesla@xxxxxxxxxx
Subject: Re: [TCML] MOT ballasting options
On 1/2/13 6:58 PM, Andy Cobaugh wrote:
On 2013-01-02 at 17:17, Jim Lux ( jimlux@xxxxxxxxxxxxx ) said:
the "500 ft spool of wire" as an inductor has some simplicity and
appeal.. I can't recall what it's inductance is, but it's on the list.
(copper being expensive these days, it's not as cheap as other means)
I think the 500ft spools of #12 THHN stranded copper measure around 9mH.
The mostly complete spool that I use with my potential transformers
measures 8.5mH.
9mH = 3.4 ohms at 60 Hz, 2.8 @ 50
1 spool = 35 Amps at 120 V, 60 Hz
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla