Simple to build isolation transformer that consumes less power than it gives out

[FatBird]

It looks like you are Right On Target JouleSeeker.

They sell Watt Meters on Ebay.com for $20 with free shipping.
The Kill-A-Watt meter measures Watts, Power Factor, Amps, Voltage, Line Frequency, etc.

[baroutologos]

Did you actually MEASURE the current ("some 0.1 amps")?
Did you actually MEASURE the input and the output POWER?  If so, what were the results (numbers)?

Would you provide a photo of your set-up?

Hey,
i did some actual measurments of my setup and reached some conclusions for me (even though i speak them loudly). then the setup is dismantled.
I do not see the merrit of re-assembling that poor setup of mine or even purchasing a 220 1:1 trafo to "see" and scientifically explain.

i do not ask anyone to "believe me" or to give up experimenting or even influence to do so. It's just my fetich to speak my oppinion (even though based on my facts and judgement and i feel no obligation at all at giving exact figures anymore to anyone.

Happy experimenting

[JouleSeeker]

  Thanks, FatBird, good to hear from you.   I have three of the kill-a-watt meters in my home lab.
Ebay also has a Chinese watt-meter at less than $20 that I use -- I have a couple of these, too.

There is some discrepancy between the two types, calibration differences I suppose.  Thus, it is important IMO to use the SAME type of meter for both the input and output power; and to switch the meters from input and output as a further check.

No numbers, no photo then? -thanks anyway, baroutologos.

  (Note: Jack N is on vacation.)

[wattsup]

@all

@JN asked me to take a look at this but I only had transformers that are 120/117 VAC, so the first secondary that supplies the second transformer cannot act like a perfect isolated transformer.

I tried it anyways and here are the results.

First coil feed via mains and a Variac is 108.4 VAC at 0.54 amps.
Second coil output is 62.8 VAC at 0.5 amps.
Obviously no OU there.

Again of course this trial is not as per the prescribed requirement of an isolated transformer. I tried all possible variables of connections to consider any polarity effect. This was the best of all of them with some even consuming up to 6 amps (really bad). The use of the capacitor doe snot change anything at all.

Since they are not perfect isolated and since I have four of these transformers I tried the primary-secondary-secondary-primary method to pair up two transformers to make two sets to again test. Nothing. There is just too much mass of everything to expect it to work that way. Light did not even go on at full power and tried various connections.

This does not discount @JN claims. It is still rather interesting that the output had anything at all given the connection method. The first secondary output is going in series with the second primary then both are shorted by the second secondary that has the parallel output across it, all under an alternating current. Maybe there is something there but with these transformers, I could not do it. I will find some suitable isolated type but I gather they have to have the highest inductance possible.

Photos of each are shown below.

wattsup

[AbbaRue]

A suggestion concerning getting a 1:1 ratio Transformer. 
Just get 2 rolls of wire the same awg. and wind a bifilar coil. 
Wind as many windings as you need to get the right impedance.