[Amps] Volt-watt meter

[Will Matney]

Ken,

I'm really not sure just how accurate a fuse would be. My opinion, I doubt very good, maybe like the light bulb. The thing is, one would have to know the surge current it takes to blow the fuse as actually a fuse will not blow right at it's rating or I have never seen one that would unless it was a surge that hit it. In this case I would be bringing the current up slowley with the variac.

What I was hoping to do was use something readily available here like an appliance which I could test easily and get a decent result. I may end up having to go to the bench on it as I just cant think of anything else.

Best,

Will

*********** REPLY SEPARATOR  ***********

On 4/22/05 at 11:32 AM kenw2dtc wrote:

>"I have a Simpson volt-watt meter here I'm thinking about getting 
>calibrated."
>
>Perhaps you could get one of your larger variacs and put in a smaller fast 
>blow line fuse, then slowly bring up the voltage on some kind of a load. 
>Keep taking readings until the fuse blows.  Wouldn't the fuse rating times 
>the input voltage on the variac be your relative watt reading?
>
>OR:  put the fuse on the load side and do output calculations if you think 
>that would be more accurate.
>
>73,
>Ken W2DTC
>
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