SPECIAL NOTE:
This toroid is a "bare bones" unit, ex commercial equipment production stores.
This means the mounting kit is NOT supplied (metal disc & 2x plastic washers plus bolt/nut)
You can easily purchase these items from electronic distributors e.g RS Electronics and they have a range of sizes to choose from. I also see that these are sold on sites such as eBay but the prices are crazy high! Better off dealing direct with the distributor!
SAFETY CAUTION: When mounting toroidal transformers think carefully about what you are doing! Remember that it is important that your transformer be mounted in such a way that the mounting screw and the metal chassis will not form a closed loop through the center and thereby create a shorted turn on the transformer Believe me, this is NOT a good thing to do!
Never heard of Australian designer and manufacturer of inductor based products, Harbuch? (If not, it is then likely that you have been living in a cave!)
Harbuch Electronics is a very respected Australian 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) - Toroidal Transformer
HERE is their website (although it doesn't seem to have been working properly for quite some time now)
Made in Australia
Model: A2015
Primary: 240V AC
Secondary: Dual 22V AC @ 0.34A (30VA) windings
All windings are colour coded, Orange is always the primary and the remaining colours are secondary wires.
NOTE: While testing I was amazed that just one transformer has had the incorrect colour coding applied to the wires! (QC failure!)
Just one transformer and I have clearly marked on a label which wires/colours have the correct AC outputs
Epoxy filled
Centre hole has been drilled and one end has had a thread added
NO MOUNTING HARDWARE SUPPLIED
This is raw manufacturing stock, the mounting kits (metal disc, 2x plastic discs and bolt/nut) are NOT included. With luck the new owner may have some of these "around" the workshop or you can purchase them online at RS Electronics and other distributors.
Read up on the correct mounting solutions for toroidal transformers, it is extremely important that you get it right
DIMENSIONS:
60mm diameter x 30mm height
Epoxy potted centre - centre drilled
Primary & secondary flying leads terminated as bare tinned wire
TESTING:
Although brand new, I wanted to check the secondary voltages J.I.C (Just In Case)
Tested using the domestic AC supply, nominally 240V AC (actual voltage today was 238V AC - evening peak hour)
Secondary voltage measured at each secondary varied between 25.2 ~ 25.4V each winding under NO LOAD conditions
I have included a printed paper label for each transformer, with my test results indicated. This same label also is included with the transformer that has incorrect colour coding (1)
Fantastic little toroid transformer to supply your project low power dual rail system.
