BRAND NEW Old Stock
Ex our workshops, a "left over" spare transformer (NEW) as part of an audio amplifier project.
Keep in mind that if 25V (under full load) is not enough "grunt", you can connect the two secondaries (isolated from each other) in phase and you will have 50V AC available.
HARBUCH ELECTRONICS
Never heard of Harbuch? (If not, it is then likely that you have been living in a cave!)
Harbuch Electronics is a very respected Australian (Sydney) manufacturer of inductor products i.e audio, video and power transformers - their products were widely used in the local broadcast and audio industry. Well known for their very high quality, high reliability products - particularly in the field of professional audio.
HARBUCH ELECTRONICS (Australia) - Step Down Transformer
Made in Australia
Toroidal Core
Part # J2417
Completely isolated, primary - secondary AND the two secondaries
240V AC input
2x 25V AC ouptuts
Current capability of EACH isolated secondary is 10.4A!
Total power rating for this transformer is capable of supplying is 625VA
Photograph of the ID label is not easy to see clearly, here is the details
HARBUCH ELECTRONICS PTY LTD
ANTRIM J2417 625VA
PRIMARY 240V ORANGE ORANGE
SEC1 30V/10.4A RED-YEL
SEC2 30V/10.4A BLU-GRY
To the right of this label is one of the OLD "Australian Made" logo graphics
VERY HEAVY: 4.5Kg
DIMENSIONS:
137mm diameter x 73mm height
Donut hole (unfilled with resin) 45mm diameter
Top & Bottom rubber plates and one metal mounting plate IS included, however the centre bolt is not (I can't find it!) - nothing special about these and easily obtainable
COSMETIC CONDITION
BRAND NEW Old Stock
Never been used, tested upon receipt into our stock and again today to make sure all is well.
NO physical damage to the core, windings or the wiring tails
SPECIAL COMMENTS:
I have checked the winding isolation (primary to secondary and also between secondaries) and also the output voltages on the secondaries - all fine.
I "double checked" the secondary outputs, both read 31.1V AC WITHOUT LOAD - thats fine.
DC resistance of the windings, approximation because of the inaccuracies of my meter at such low resistances
TWO WARNINGS!
WARNING ONE:
This is a VERY HEAVY TRANSFORMER, TAKE GREAT CARE LIFTING THIS BEAST! To drop it on your feet would not have a good outcome ...
WARNING TWO:
SAFETY
When using this transformer, your safety (and that of others using the equipment once the transformer is installed) is paramount!
You are dealing with 240V AC at HIGH current (for the domestic scene anyway)
Only a skilled, licensed electrician should be installing and wiring this equipment - this is not something a hobbyist should be playing around with - to do so could be lethal!
A decent Australian approved toroid with this current capability will never be cheap and my original purchase price was in the region of A$150 for these high quality Australian (stay away from the Asian toroids!) designed and made toroidal transformers that are trusted by professional users.
I have no need of this transformer, it is taking a lot of space and and it is DIFFICULT to move around due to the weight. It wants to get "out there" and do some work ...
I can ship it safely (packed with copious amounts of protective sheet foam and bubblewrap within a VERY STRONG outer carton).
