Power supply issue

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Daniel Quinn
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#16 Re: Power supply issue

Post by Daniel Quinn »

That’s the conclusion I’ve come to . 2 transformers will give me 2 plus rails simples 😉
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pre65
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#17 Re: Power supply issue

Post by pre65 »

So, with the two transformer secondary's and two bridges as per DQs original idea could one just connect the two neg terminals from each bridge to make the 0v line ?

Must admit that's not something I've tried before.
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shane
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#18 Re: Power supply issue

Post by shane »

Voila!

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Nick
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#19 Re: Power supply issue

Post by Nick »

Look how much simpler it is to show with a diagram.
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#20 Re: Power supply issue

Post by Daniel Quinn »

It’s not the diagram that’s complicated it’s the forum software

Shane your diagram is spot on except there are 2 wires to the 0 .

As it’s a vigotronix transformer that will be red and orange
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pre65
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#21 Re: Power supply issue

Post by pre65 »

Daniel Quinn wrote: Sun Jul 31, 2022 4:17 pm
Shane your diagram is spot on except there are 2 wires to the 0 .

As it’s a vigotronix transformer that will be red and orange
ALL four wires from the transformer secondary's go to the two bridge rectifiers.

The 0v is made from the negative terminals on each bridge.

All this poncing around because you can't, or won't, post a diagram.

For diagrams I scan (on my printer) a piece of A4 with the hand drawn details and upload the image to Imgur, which is still free. Or you could take a photo of the diagram and upload that to Imgur. It's simple, it must be if I can do it. :lol:


https://imgur.com
Last edited by pre65 on Sun Jul 31, 2022 4:34 pm, edited 1 time in total.
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Nick
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#22 Re: Power supply issue

Post by Nick »

If you have a problem posting a image ask and I will try and help.

The second part of your post makes no sense. None of the transformer leads connect to the output.
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#23 Re: Power supply issue

Post by Nick »

Just keep the image size small and attach it to the post.
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shane
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#24 Re: Power supply issue

Post by shane »

Daniel Quinn wrote: Sun Jul 31, 2022 4:17 pm It’s not the diagram that’s complicated it’s the forum software

Shane your diagram is spot on except there are 2 wires to the 0 .

As it’s a vigotronix transformer that will be red and orange
Two wires to which zero? And do you mean in my diagram, or in your setup? In the diagram, the two negatives on the two rectifiers are joined together to make a common earth. They could just as easily be separated if your application required it, but from your original description, it doesn't.

For the diagram, I took a photo of it on my phone, loaded it to the Postimage app and copied the resulting link into my post. Took about two minutes, as you can see from the quality of the drawing...
The world looks so different after learning science. For example, trees are made of air, primarily. When they are burned, they go back to air, and in their flaming heat is released the flaming heat of the Sun which was bound in to convert air into tree.
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#25 Re: Power supply issue

Post by Daniel Quinn »

https://app.photobucket.com/u/DanielQui ... 94ba389da6

It as to be apple , I’m sure it weren’t this complicated with an and android

Image
Last edited by Daniel Quinn on Sun Jul 31, 2022 5:49 pm, edited 2 times in total.
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pre65
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#26 Re: Power supply issue

Post by pre65 »

If you want, you can Email me the image and I'll post it for you.

I'll send you a forum PM with my Email address.
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Nick
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#27 Re: Power supply issue

Post by Nick »

Daniel Quinn wrote: Sun Jul 31, 2022 5:32 pm https://app.photobucket.com/u/DanielQui ... 94ba389da6

It as to be apple , I’m sure it weren’t this complicated with an and oid
I have removed the img tags, just post a link to the website for photobucket.

Anyway as I suspected you have taken how you make a split rail supply with one bridge and confused that with what you need to do for a single rail supply.

What Shane posted is what you want.
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#28 Re: Power supply issue

Post by shane »

Using your layout, I get this. I don’t think you’d normally connect either end of the secondaries to ground, but I’m happy to be corrected.


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Nick
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#29 Re: Power supply issue

Post by Nick »

Using your layout, I get this.
That's exactly what you posted before and so both of them are correct. Though with vigotronix the white is yellow.
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#30 Re: Power supply issue

Post by Daniel Quinn »

I’ve found a picture I took when I initially did it, think what I’ve done wrong is joining the red and orange 0v . They should not have caps that are linked .

Will it work if I connect red and orange to negative terminal on the bridge ?
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