Talema toroidal transformer

Try here:

"eatmorepies"

Is it new or used and removed from equipment ?

If the latter, then it is a custom wound job and there will be no published data.

One can analyse a transformer and come up with voltage and currents ratings for each winding - but it aint that simple.

... Phil

"eatmorepies"

The blue/brown pair are bound to be the primary.

Measure all the resistances and get back to us.

... Phil

Assuming its a mains transformer - connect the highest resistance winding to the mains and see what voltages the other windings give.

If you're not sure its a mains transformer - a variac might come in handy.

Thanks for the various suggestions.

I've done some tests. It appears the blue and brown are not the mains input leads, they are open circuit. Input coil of 40R and outputs of 3R8, 0.9R and

It's a gash transformer I took out of something some years ago. A friend has a use for a power supply and I wondered if this transformer would make the basis of a simple PSU. He has now bought a 0-30V, 0-5A, fully adjustable and regulated bench supply for £60 (inc P&P!). It's not worth me bothering to make something.

John

John Fields explained on 11/03/2013 :

ENGLISH Slang surplus to requirements; unnecessary, extra, or spare [of unknown origin]

Collins English Dictionary ? Complete and Unabridged © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003

"eatmorepies"

BTW:

A 40 ohms primary corresponds to an 80VA rating.

.... Phil

I never made any such claim - and in your drug addled haze, you're confusing a bodge for battery charging with an excessive charger.

You admitted being a druggie - I'm merely quoting you.

Eh! - you taunted me for not being able to handle taking drugs like being a dead head was something to be proud of.

In my economic pinching youth I used to keep my car battery trickle-charged with a 100W light bulb and a diode, using a polarized plug to ensure a car body at ground potential ;-)

Then, at Motorola, I'd run the car down the parking lot aisle, jump in and pop the clutch to start it.

Then I would buy a battery on sale at Sears the next week >:-} ...Jim Thompson

Whatever I did or didn't do doesn't alter the fact that you're a washed up boring old druggie.

Ian's incapability and insufficiency reminds of one who's fond of falling back on "cluck-cluck" when cornered. ...Jim Thompson