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I'm getting a 12kV 30mA neon sign transformer, How do I make the output variable so I can turn the power up or down?? Answered

Title says it all how do I make it so I can turn the power up or down? thanks for any help =D

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steveastrouk
steveastrouk

Best Answer 9 years ago

A classic method would be to use a "variac" to drive the input to the transformer, every experimenter should have at least one.

Here's a UK supplier I found
http://www.maplin.co.uk/module.aspx?moduleno=6476
but Variacs are available from everywhere.

Steve.

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j.hawkins
j.hawkins

Answer 9 years ago

Do you know of any stores that sell these? cause I can't order much or my parents start asking questions and freak out haha don't worry they know this could be lethal

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steveastrouk
steveastrouk

Answer 9 years ago

THat depends where you are in the world, in the UK, you can go to Maplin and buy one of the shelf. I'd look at online surplus places, or Ebay.

Steve

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j.hawkins
j.hawkins

Answer 9 years ago

I'm in the US so.. 

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j.hawkins
j.hawkins

Answer 9 years ago

Ok don't immediately dismiss this thought, but Could I simply use a 120V light dimmer?? 

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steveastrouk
steveastrouk

Answer 9 years ago

Not a good idea. These transfomers won't like it.

Steve

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steveastrouk
steveastrouk

Answer 9 years ago

And it may fail hard-on, so its a dangerous method.

Steve

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Re-design
Re-design

Answer 9 years ago

And an isolation transformer would be a nice accessory to this bit of stuff.

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framistan
framistan

9 years ago

I believe you would need an item called a VARIAC to do that.  Please be carefull because that unit puts out 3 hundred and sixty WATTS of electricity!  That amount of voltage and amperage can kill you.  Some experimenters build TESLA coils and ....  even though they are HIGHER voltage... it is almost ZERO AMPERES and somewhat safer than a neon sign transformer.