Does anyone have any ideas on what kinds of stores, if any, you could find a variac? i need one in a hurry and cant wait for an online purchase. i think radioshack used to sell a variac, but i dont think they do anymore. no luck in the home depot / lowe's either.
Look in the yellow pages for electronic surplus or salvage. I typically see those things in boneyards... and they're way less than the 300-400 bucks a new one will set you back..
They sell new at Newark for $150 CDN. You don't normally need, or want a 10A model. For those, watch auctions, hamfests and surplus houses.
-Chris
-Chris
Thanks for the replies, I did mean I needed a variac locally, I'm aware they can be purchased online.
I was trying to slow down a motor but came to the conclusion it was not the kind of motor that would slow down just by lowering the wall voltage.
I know what I would need to do without modifying the motor, but I don't think I can find a 2000W amplifier locally =)
I was trying to slow down a motor but came to the conclusion it was not the kind of motor that would slow down just by lowering the wall voltage.
I know what I would need to do without modifying the motor, but I don't think I can find a 2000W amplifier locally =)
W.W. Grainger might have what you need -- they are !OUCH! expensive but even my skin-flinted relatives use them when they need a component in a hurry.
A new 3PN2210B (20A, 120V single phase) will set you back around $700 from the Variac store.
Like everyone else, I got mine off EBay -- and use it every day.
A new 3PN2210B (20A, 120V single phase) will set you back around $700 from the Variac store.
Like everyone else, I got mine off EBay -- and use it every day.
Jeez,Are Variacs really that expensive?
I got one of the ones Radio Shack used to sell years ago,a Micronta..
I got it unused,in the original box,On Ebay for like $35..I think it's 5A.
I also have a smaller 3A? one that I got in a box of "junk" that a friend gave me..Havn't used that one yet though,it's just the variac (no case,plug,cord,etc.) but it looks brand-new also.
Dang! I didn't realise they were so much $$!
I got one of the ones Radio Shack used to sell years ago,a Micronta..
I got it unused,in the original box,On Ebay for like $35..I think it's 5A.
I also have a smaller 3A? one that I got in a box of "junk" that a friend gave me..Havn't used that one yet though,it's just the variac (no case,plug,cord,etc.) but it looks brand-new also.
Dang! I didn't realise they were so much $$!
Can you run the motor with pulse-width modulation ? -- International Rectifier (among others) have some very nifty and inexpensive products for motion control -- www.irf.com -- search under "motion control".
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