Re: variac voltage out (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Fri, 15 Jun 2007 14:00:01 +0800
From: westland <westland@xxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: variac voltage out (fwd)

In Hong Kong (and I presume other 240V locations) it's common to pick up 
Variacs that have both 240 and 120 V taps (in fact I've not seen one 
here without a tap on the primary)





Tesla list wrote:
> ---------- Forwarded message ----------
> Date: Thu, 14 Jun 2007 05:55:47 -0500
> From: BunnyKiller <bunnikillr@xxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: variac voltage out (fwd)
>
> Hey Chip,
>
> you are right to a degree about the low voltage part...  you can in fact 
> wire a 240 V variac on 120 V and it will function rather well  until you 
> start wanting to use the full output range on the variac.
> For example, at 0 out you get 0 output , as you increase the  "output" 
> to about 85% you will get a matched true output of the input voltage. 
> Once you pass the 85% mark, the output voltage doesnt climb much higher 
> ( especially if you have a load on the output side) .
>
> Most likely the core is "too big" for 120Vac on a 1256D
>
> How do I know ??  I tried it with a 1256D variac on 120 V in ...  :)
>
> Scot D
>
>  
>   

-- 

___________________________________________________

J. Christopher Westland, PhD CPA
Professor, ISMT, University of Science & Technology, HK Clearwater Bay,Kowloon, Hong Kong
Tel: 852 2358 7643
Fax: 852 2358 2421
Mob: 852 9528 1745
URL: ihome.ust.hk/~westland
Mobile e-mail: chris.westland@xxxxxxxxxxxx