Re: Expensive hobby

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Mike" <induction@xxxxxxxxxxx>

Hi Paul,
             Yes, there is a much safer way to determine the secondary 
voltage, hook it up backwards so the 125 or what ever your local supply 
voltage is, now connected to the high voltage side. When you meter that 
voltage with the digital meter, you will know and record the input. Then 
simply read the voltage on the now stepped down original primary and you 
will get a nice, safe, low voltage. Record that, do a ratio and you know 
what to expect from the unloaded transformer when you hook it up in the 
normal way.
Mike

-- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Thursday, April 21, 2005 11:54 AM
Subject: Re: Expensive hobby


> Original poster: "Paul B. Brodie" <pbbrodie@xxxxxxxxxxxxx>
>
> Mike,
> I doubt it because this MOT is substantially larger than the other coils 
> and it has a lot more turns on the secondary. Also, the 4000 V is labeled 
> right on the transformer with the manufacturer's data. Since the 
> manufacturer doesn't know how the end user is going to wire the 
> transformer, they wouldn't put the 4000 V assuming it is going to be 
> driving a voltage doubler or anything else, for that matter.
>
> I'm curious, where did you get the 1650 vac figure? Almost everything I've 
> read on this list and on countless web sites say that the majority of 
> MOT's are 2000 vac and the heavy duty ones 4000 vac. I am going to drive 
> them with my variac set to 10 vac and measure the output from the 
> secondary. Then, I can extrapolate the output at 100 vac on the primary. 
> Anyone have a better idea of determining the secondary voltage on MOT's??
>
> Paul
> Think Positive
>
> ----- Original Message -----
> From: "Tesla list" <tesla@xxxxxxxxxx>
> To: <tesla@xxxxxxxxxx>
> Sent: Wednesday, April 20, 2005 6:31 PM
> Subject: Re: Expensive hobby
>
> > Original poster: "Mike" <mike.marcum@xxxxxxxxxxxx>
> >
> > Odds are the 4000v is dc after the 1650vac or so from the mot is > 
> rectified
> > and doubled under the load of the magnetron.
> >
> > Mike