1050 DC in plug size

[adam1977]

Can anyone please tell me the diameter of the centre pin on a 1050 disk drive please? I've bought a couple of new 3a 9v AC transformers and the plugs supplied are slightly too small and i'd like to see if I can get a small adapter for the plugs instead of cutting them off and soldering on new one's

[russg]

Can anyone please tell me the diameter of the centre pin on a 1050 disk drive please? I've bought a couple of new 3a 9v AC transformers and the plugs supplied are slightly too small and i'd like to see if I can get a small adapter for the plugs instead of cutting them off and soldering on new one's

You have a 1050, so you can see it's approximate size. I would guess 1 mm. I don't have a micrometer to measure it with.

Cutting off a 1050 AC adapter plug would be straightforward. You don't have a stock1050 power adapter to get the plug from.

Wait.. you have a busted 1050 power supply, Using that would be easier than getting an exact plug.

Edited October 8, 2018 by russg

[manterola]

Check this:

http://atariage.com/forums/topic/281972-replacement-psus/page-2

 

#32 post you can see the adaptor you are looking for. Not 100% sure of the size, but I guess that is what you need.

 

Another option (I did this). It to get this cable from ebay. You get 2 barrel connector at a very cheap price. Then cut and replace the original ones.

https://www.ebay.com/itm/1xDC-5-5x2-5mm-1-Female-to-2-Male-Power-Splitter-Cable-For-Camera-0-7M-Copper-S1/263598960099?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

Edited October 8, 2018 by manterola

[adam1977]

Many thanks, 2.5mm x 5.5mm it is, now sorted

[xrbrevin]

FYI, i bought a 9v AC 2amp "Line 6 Variax 700" from amazon for £8.50 quid and its a straight fit for the 1050 - no modding required.

There is a forum post on herre where someone did an oscilloscope test on the current draw of the 1050 and found it only needs 1.2amp

[adam1977]

Thanks for letting me know, I didn't know they only needed 1.2 amps, is that in all modes? I have found a UK eBay seller that is selling 9v 3amp AC transformers at £14.19 each, I bought two from him, but the plug size is 2.1mm x 5.5mm, but i've sorted that now.

 

Here's the link if anyone wants an original spec Atari one: http://173560426585

[+Nezgar]

3amp is good if you use that splitter.

[_The Doctor__]

3 amp is good if you use the splitter as well as have any dragging disks, experience a locked rotor or motor for a brief period or all of the aforementioned situations.. also depending on what mods or additional circuitry you have added to a drive... many many reasons that the choices should be in that realm.

[adam1977]

The link I posted isn't right, here's the correct link to the UK seller of 9v 3amp AC transformers: https://www.ebay.co.uk/itm/173560426585