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Day 1: Power supply

A project log for 1970ies Pinball like it's 2023

I have a rather beaten up pinball from the 70ies. Let's make it ready for the doomed century...

tilloTillo 02/05/2023 at 16:260 Comments

I wanted to check the flippers today, but unfortunately the transformer died as I found out. 

But I learned (again probably) that they run on 24V AC.

All the other coils run on 24V DC.

Then there ar parts which run on 110V AC.

And lamps and the whole logic runs on 6V AC.

And since I don't live in square inch per freedom eagle country I have 230V AC.

Oh, boy.

Since 110V is mainly used for the score motor (great piece of technology, but unfortunately I don't think I'm ready to rebuild the whole thing from scratch) so I can leave that aside for the moment.

Since I will replace the lamps with LEDs anyway the whole 6V DC isn't needed too.

So for now I need.

* Something between 20 and 24 V DC for the coils.

* 5V DC for the IO

* The weird 24V AC for the flippers. Unless someone can point me to other coils.

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