Model railway

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18

raschemmel:
The downside is that if you make a mistake , instead of a 5V/1A regulator shutting down, your P.S. will deliver enough current instantly set any component on fire (melting the breadboard of course). Have fun with that. I watched an LM555 timer chip burst into flame and go incandescent with only a 10A supply, so 20A would be even more spectacular. Just don't make any mistakes and you should be ok.

P= I x V
= 3A x 16V
= 48W

Let I = 48W/12V
I = 4A

Is the ATX 12V rated for 4A ?
Is the voltage booster rated for 4A ?

Robert

Thanks rasch...

I’ve certainly considered the possibility of over-powering the more delicate parts of my layout, To the extent that I’ve been viewing ‘afrotechmods’ youtube on current limiters. I will probably install them on the more expensive circuits.

Many thanks for your help. I was hoping to find someone who's played with ATX PSUs and is used to going ‘off piste’ with them.