Electronics > Beginners

9V AC power supply

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Jwillis:
Everything we do is inherently unsafe depending on how we approach it and how much we respect it.But you can't be afraid of something just because someone says so.Find out and learn the procedures of safe practices.Taking the appropriate precautions and knowing the risks removes the mystery.

Signal32:
Can find tons of used (and maybe some new got through) ones on eBay / thrift stores / probably already have a few / etc ...

mtimmermans:
Thanks for all your suggestions!

Inspired by your ideas, instead of trying to find an AC adapter, I tried to find an appliance which needed the AC power. I stumbled across https://www.poweradaptorsuk.co.uk, where they list many UK AC/AC adapters and the intended appliance for each adapter. Using this I managed to find the European equivalent power supply and found this one:
https://www.thomann.de/nl/studio_projects_spps_netzeil.htm#bewertung

It's a lot more expensive than a PCB transformer, but I like the added safety since this is my first big electronics project.

tooki:

--- Quote from: Seekonk on August 26, 2018, 11:38:42 pm ---You must have second hand thrift stores where you are. The place I go when I need one sells them for 50 cents.  They have lots of transformer based ones from a bygone era.  Higher output voltage can be easily dealt with. You can always sub in an opto isolator for you clock and use a switch mode wall wart for power.

--- End quote ---
That’s a good point, I should check out the thrift stores for adapters!!

edy:
Please excuse me if this newbie question, but if all you can find is a 230VAC to 46VAC transformer, and I chain two of them together... would that also work? I figure 230:46 = 5:1, and then 46:9.2 = 5:1... so if I feed in 230VAC into the first transformer, the output of the first (46VAC) going into the input of the second, causes output of the second to be 9.2 VAC? Is that too simplistic and for practical reasons is there a reason why this is a bad idea?

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