[Boatanchors] Variac low?

[eldim at att.net]

Hello Stephen,
What is the rating in VA or what is your VARIAC Fused for?
If the voltage output of your variac is 115 VAC with NO-LOAD, and drops to 90 VAC when Loaded, then I would suspect that you have a VARIAC that is of a Lower Rating than that required to support the  LOAD CURRENT.

73,
Glen Galati,  KA7BOJ
Tacoma, WA
eldim at att.net

-------------- Original message from StephenTetorka at cs.com: -------------- 


> Happy Holidays to all. 
> 
> Would appreciate your comments: 
> 
> Testing a low voltage power supply. 
> Looking for +400 VDC via full wave using 5U4. 
> 
> Have its AC via a variac to bring it up slowly. 
> Got the DC there. 
> However, the AC in was only 90 VAC out from the Variac at max control. 
> Variac by itself 115 VAC at max control. 
> 
> Put a light bulb in front of the Variac. 
> Got a slight glow only at full ( 90 VAC ) out into the power supply. 
> 
> What's up? 
> 
> Tnx, 
> Steve 
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