Variac !!!

pre65 · Post by **pre65** » Tue Sep 04, 2007 5:25 pm

Hi-having bid on several variacs on e-bay recently,and not bid high enough (last one was £101) i noticed Maplin do a 0.75A model for £31.14.

Is 0.75A enough ?

I see they do an 8A version for £59.98 -now discontinued !!!

http://www.maplin.co.uk/Search.aspx?cri ... E&DOY=#DOY#

or these from Rapid (i need some bits from them !)

http://www.rapidonline.com/productinfo. ... leno=62116

pre65 · Post by **pre65** » Tue Sep 04, 2007 5:40 pm

Hi-i have a Rapid order to place so i am going for their 2A enclosed model
88-1990

Andrew · Post by **Andrew** » Tue Sep 04, 2007 6:27 pm

2A is about 500watts at mains voltages, so at 500v you should be able to draw 1 amp, or 500mA at 1000v or at 250v 4 amps and so on.

I don't think anyone but perhaps Paul, Nick and Darren with their SE behemoths needs that much HT at that kinda current.

cheers,

-- Andrew

Post by **Nick** » Tue Sep 04, 2007 6:31 pm

2A should be good for most things.

pre65 · Post by **pre65** » Mon Sep 10, 2007 12:54 pm

Hi-as my Bluebell parcel (no-not the flower) has not come today i have managed to get my variac up and running.

I have mounted it on a bit of ply and made a terminal block from delrin.

Also i have left space for a 3 pin socket.

Tested it out on the Yamaha DD turntable,and they both work fine.

http://i111.photobucket.com/albums/n146 ... variac.jpg

ps notice the clip leads,i'm learning !

pre65 · Post by **pre65** » Mon Sep 10, 2007 8:22 pm

Hi-now i have the variac can i ask about "re-aging" capacitors.

Is it just ramping them up to the max specified voltage ?

Post by **Nick** » Mon Sep 10, 2007 8:40 pm

http://www.vcomp.co.uk/tech_tips/reform ... m_caps.htm

audio-talk

Variac !!!

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