Tony's latest traffo DIY build

this is a power traffo using a 2inch center leg stacked to 3 1/4 inch DEECO silicon steel (noss) irons..
specs are as follows:
primary: 220 volts 60hz.
secondary1: 250volts at 2amps.
secondary2: 100volts at 0.5amps
secondary3: 12.6volts at 10 amps
secondary5&6: 6.3 volts at 3 amps






completed, there are 3 chokes sitting on top, 1/2inch, 5/8 inch, aqnd 3/4 inch.


testing prior to dipping in polyuretahne varnish
110629a-021.jpg


line voltage:
110629a-026.jpg


magnetizing current:
110629a-025.jpg


unloaded core apparent power:
110629a-023.jpg


actual unloaded power in watts:
110629a-024.jpg


power factor:
110629a-027.jpg
 
Very nice work! I wound 1000s of stators for my company but this is truly a work of art. Where can I get parts and is there a site that shows how to wind these?

Thanks
WO

parts are all available locally in manila, the irons used costs P110 per kilo, this traffo used about 9.5kgs. so total cost of irons is P1045 or U$24...

stateside, you can get then from Thomas and Skinner.........Thomas and Skinner

this is a good read: http://www.geofex.com/Article_Folders/xformer_des/xformer.htm
 
Big? not really, core is a 1 1/4inch squared, core rating of about 75VA,

primary at 220volts,60hz, 950 turns of #24 magnet wire, layer wound.
secondary1 at 120volts, 0.4 amps, 570 turns of #27 magnet wire, layer wound
secondary2&3 at 6.3volts center tapped, 3.0amps, 28turns of #18 magnet wire..

CIMG8508.jpg
 
Last edited:
update:

after painting the traffo, i had some aluminum covers made, since no end bells can be found anywhere for 2inch cores that i know of:
 

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wow...nice build sir....it's really nice building your own trafo especially if u have those equipments....customizing trafo for you own use is really a factor and sometimes cost saving rather than buying ready made trafo that not exactly as u want...some store sell trafo of false VA rating just voltage and amperage and you dont know wether it for a single wind rating or dual...if you not familiar with the core size you can be fooled.