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RE: first coil
- To: tesla@pupman.com
- Subject: RE: first coil
- From: "Tesla list" <tesla@pupman.com>
- Date: Thu, 02 Oct 2003 12:27:36 -0600
- In-Reply-To: <3D74B6131C67CA48B6AD345B21CCA8BF2A961A@EMSS04M19.us.lmco.com>
- References: <3D74B6131C67CA48B6AD345B21CCA8BF2A961A@EMSS04M19.us.lmco.com>
- Resent-Date: Thu, 2 Oct 2003 12:32:56 -0600
- Resent-From: tesla@pupman.com
- Resent-Message-ID: <WFSF3.A.IlE.W9Gf_@poodle>
- Resent-Sender: tesla-request@pupman.com
Original poster: Terry Fritz <teslalist@twfpowerelectronics.com>
Hi,
At 11:45 AM 10/2/2003, you wrote:
>10meg 1/4W resistors are fine if you have more than 10 resistors in
>series in your MMC. Thats what most use anyways.
>Continuously, 10 resistors in series at 21000kV (peak voltage of 15kVAC)
>would be about 0.44W per resistor, but the 21000kV is not continous so
>power dissipation will be much less.
The 1/2 watt types, (DigiKey # 10MH-ND) have been well tested for power,
arc-over, destructively tested... I have no idea if 1/4 watt types would
be "ok". The voltage across them is about 14kVrms. Since they are in the
charging circuit, they see the 60Hz high voltage.
However, I have thousands of the 1/2 Watt resistors here that I am happy to
send for free to anyone that needs them. Matthew's will be on the way
tomorrow ;-)
Cheers,
Terry
terrellf@qwest.net