Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Oh it's great here, I'm up in the mountains of Asheville and I like it. Coming from UK the weather here can't be beaten. My wife's from New Haven CT but I don't like it up there, too busy for me and too much traffic.
The "magnet wire" has a clear insulation called Formvar on it. Where the brush contacts that insulation is removed and the wire flattened. Corona dope or some sort of liquid insulation needs to be used at the splice (on the side) as Ron said.
I was rather hoping that you would follow the fault finding procedure that I started, so that we could establish the nature of the problem and hopefully repair your Variac.
The way that the Variac was originally wired (terminal 1, 0V in and out, terminal 6, 120V input and terminal 3, wiper output) was correct for the step up mode, which is the most useful because, as I stated, it gives an output range of 0V to 280V, a standard range for a 240V Variac like the one I have. By having this range you will be able to operate UK devices. The way the Variac is connected now only gives an output range of 0V to around 140V
The diagrams for this connection are shown on the data sheet.
? & don't be patronizing or I will have a pop at you- then you will know
Just to clarify the information in my post 63 about the Variac connections is correct as is clearly stated on the Variac data sheet and the extracted images which were posted to make it even clearer- there is so much flak on ETO from certain parties, it is unbelievable and probably untenable for me!
As a bit of fundamental stuff: a Variac is just a transformer- most are auto transformers- and like all transformers you can connect them any way you like with one caveat, you must not exceed the maganatising force. In practical terms this means you must have sufficient turns per volt to ensure that you do not saturate the core. Before anyone pops up and contradicts what I say, remember I am talking in general terms. There are many specialist transformers where other factors must be taken into account.
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