Oric Atmos PSU Specs

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StarshipUK
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Oric Atmos PSU Specs

Post by StarshipUK » Sat Aug 13, 2016 9:42 pm

Please can someone let me know the specs of a Oric Atmos PSU, as I need to buy a replacement and I do not have the one I was using anymore.

I sent my Oric Atmos to someone to do a modification and he sent me back the Oric Atmos unmodified and missing the power supply and does not seem likely I will get it back.

From what I have read here the PSU (when used with Cumulus) needs to be a least 1.2A and 9V. Does anyone know the connector tip size (I am guessing it is 5.5mm x 2.1mm) and the Polarity of the plug please?

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iss
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Re: Oric Atmos PSU Specs

Post by iss » Sat Aug 13, 2016 10:22 pm

On Muso's Oric Site you can find some pictures of Oric PSU's. On the labels are the specs: Output DC 9V, 5.4 VA (or ~600mA).
This is the standard Oric PSU, but it's really recommended to use PSU with 1.0-1.2A output when using Cumulus (or other periphery powered trough the expansion port).
Connector is 5.5mm x 2.5mm, but larger one can be used too important is the internal diameter.
Polarity is '+' inside, '-' outside.
Last edited by iss on Mon Aug 15, 2016 2:26 pm, edited 1 time in total.

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polluks
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Re: Oric Atmos PSU Specs

Post by polluks » Mon Aug 15, 2016 2:03 pm

Our wiki says 2.5 mm :?:
cc65 development
Oric Atmos + Cumulus
Acorn Electron

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iss
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Re: Oric Atmos PSU Specs

Post by iss » Mon Aug 15, 2016 2:25 pm

@polluks: Thanks for correction!

Yes, the jack is 2.5mm. According to Oric service manual it's: SK3 - Jack Socket 2.5mm.

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