ISO transformer test rig

I have a B&K TR-110 that I bought on eBay.

You can also find them on Facebook marketplace and Craigslist.

 
What exactly are you looking for?

A cheap ISO can be had for 20 bucks. The unit Jano posted above is nice, as it can do both 120 and 100V. But it depends what you're trying to do. And you'll have to build some wiring either way.
 
@andrewb I want to test older crt arcade monitors, ones that required an ISO transformer. I don't have any arcade cabs, so I wanted to build a little test rig.
 
FWIW, I have powered up 19"
& 25" K7000's, G07's, K4600, STD & MED Res K4900's, TM-202G's, EZ20's with the TR-110. 🤷🏻‍♂️

I took a grounded 18awg power cord, .093 Molex and spring clamp for ground. I also made adapters for .084 Molex & 2 Prong Nintendo's.
 

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He's asking for the monitor's power requirement in VA (not just the voltage) so he can size the transformer.

VA = volt-amps
(It's not the same thing as watts,btw)
I don't want to hijack this thread but I was just thinking about this today as I was running into the same issue.

I've never given it 2 thoughts until now but I just learned that isolation transformers have different VA ratings.

I'm I safe using a isolation transformer that outputs 120VAC 100VA on most (or all) chassis?

Is there a chart anywhere that shows all the common chassis power input requirements?

Is what I'm asking even correct? lol?
 
I don't want to hijack this thread but I was just thinking about this today as I was running into the same issue.

I've never given it 2 thoughts until now but I just learned that isolation transformers have different VA ratings.

I'm I safe using a isolation transformer that outputs 120VAC 100VA on most (or all) chassis?

Is there a chart anywhere that shows all the common chassis power input requirements?

Is what I'm asking even correct? lol?

I have experience with only a few monitors so I can't answer directly. But each monitor operator's manual should give the power specification. In amps or watts probably.
That VA rating need to be higher but you need to know the power factor which probably isn't specified.

If you have a Kill-a-Watt tool you should be able to find the PF for a given monitor.

If you just want to guess….assume a horrible PF of 0.50. So multiply watts used by 1/PF to get the minimum VA needed.
 
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