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*To*: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>*Subject*: Re: [TCML] Calculating transformer output at lower voltages*From*: <mrapol@xxxxxxxxxxxx>*Date*: Thu, 7 Jun 2012 10:51:30 -0400*Delivered-to*: teslaarchive@xxxxxxxxxx*Delivered-to*: tesla@xxxxxxxxxx*List-archive*: <http://www.pupman.com/pipermail/tesla>*List-help*: <mailto:tesla-request@pupman.com?subject=help>*List-id*: Tesla Coil Mailing List <tesla.pupman.com>*List-post*: <mailto:tesla@pupman.com>*List-subscribe*: <http://www.pupman.com/mailman/listinfo/tesla>, <mailto:tesla-request@pupman.com?subject=subscribe>*List-unsubscribe*: <http://www.pupman.com/mailman/listinfo/tesla>, <mailto:tesla-request@pupman.com?subject=unsubscribe>*References*: <3F5A22145E63410598266E01C7A8C458@johnmorelandPC> <1338925422.7339.YahooMailNeo@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> <4FCEAD50.1070201@xxxxxxxxxxx><4FCEDB3C.5080904@xxxxxxxxxxx> <1339011882.57727.YahooMailNeo@xxxxxxxxxxxxxxxxxxxxxxxxxxxx><4FD02107.8020805@xxxxxxxxxxxxx><4FD08A1A.7030504@xxxxxxxxxxx><B65A168721474DCCA197A23D5575B118@owner1bbb44764> <4FD0BCE3.7020409@xxxxxxxxxxxxx>*Reply-to*: Tesla Coil Mailing List <tesla@xxxxxxxxxx>*Sender*: tesla-bounces@xxxxxxxxxx

To: <tesla@xxxxxxxxxx> Sent: Thursday, June 07, 2012 10:38 AM Subject: Re: [TCML] Calculating transformer output at lower voltages

On 6/7/12 6:29 AM, mrapol@xxxxxxxxxxxx wrote:I know the usual formula Vs/Vp = Ns/Np for calculating transformer voltages, but I have a problem in that I am dealing with a sealed NST and don't know the number of secondary or primary turns. What I am trying to do is calculate the output of a 12kV NST when it's getting less than 110 volts input. For example, if I feed the NST 30 volts AC, what does it put out? Is there any way to figure this out without a high voltage meter (which I don't have) and without knowing the number of primary or secondary turns?with no load, and with the voltage LESS than the nameplate input voltage,it scales linearly (the turns ratio isn't changing, after all)12kV out for 120V in 3kV out for 30V in

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