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Forum Index : Electronics : Bryan's Inverter build

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disco4now

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Joined: 18/12/2014
Location: Australia
Posts: 773
Posted: 05:16am 01 Aug 2023
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Hi Bryan,
I am interested in the answer to this as I have one of these toriods , but my understanding is you would need to add extra turns to get both windings up to the same number of turns. i.e need to add 18 turns to the 197 (230V) to get it to match the 215 on the 250V winding.

Gerry
 
Bryan1

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Joined: 22/02/2006
Location: Australia
Posts: 1111
Posted: 07:29am 01 Aug 2023
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Finally got around to making the Anderson connection and with only 25sqmm in a 175 amp lug it is a loose fit so plenty of solder needs to go in. I used one of my stands to hold the wire nice and upright and got a good solder joint done.

Then onto the positive cable and on stripping the end I went WTF   water damaged cable that in noway will suck up any solder.

So back to the 12 volt shop where they made me a new cable with a 6mm hole in the lug and gave me a pair of 25sqmm x 6mm lugs for free.   So in the morning the negative lead will get a 6mm lug cause as far as a M5 bolt securing a lug with a 10mm hole doesn't appeal to lasting.

I do have my old Fluke 865 scope meter so I will use that for setting the voltage and looking at the waveform to make sure it's running properly.

Cheers Bryan
 
Bryan1

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Joined: 22/02/2006
Location: Australia
Posts: 1111
Posted: 08:19am 03 Aug 2023
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I was looking at that old hercus cnc lathe I have here which I'm stripping and when I saw the mains transformer it was like WOW look at the size of it.




Shown in the centre is the smaller inductor off the aerosharp so from the size of them should be able to get some thick wire going thru for my next inductors.

Cheers Bryan
 
Murphy's friend

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Joined: 04/10/2019
Location: Australia
Posts: 477
Posted: 08:34am 03 Aug 2023
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If those cores are from a "mains" (50Hz) transformer then the laminated core might not be suitable for an inverter choke unless its a warpinverter.

There is more to cores than the hole size Bryan.
 
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