Re: {Collins} (no subject)



Put a 200W lamp in series. It will protect the radio and the variac. As you crank up the variac, look at the lamp filament. As long as the bulb doesn't get bright, you are fine.  

Sent from my iPhone

> On Oct 25, 2017, at 11:36, W6ph--- via Collins <collins@xxxxxxxxxxxxx> wrote:
> 
> Put an appropriately rated fuse between the variac and the radio.  If  
> there is a direct short in the radio, the current going through the small wire  
> in the variac can burn out the winding.  Protect your variac.  Don't  ask me 
> how I know.
> 
> 73, Kurt W6PH
> 
> 
> In a message dated 10/25/2017 8:51:28 A.M. Pacific Daylight Time,  
> collins@xxxxxxxxxxxxx writes:
> 
> I'd  point out that, normally, most things don't start happening until you
> get  to 100 volts -- and by then it may be too late. If you have a variac
> that  measures current or some other ammeter that is always very  useful.
> 
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