adam1977 Posted October 8, 2018 Share Posted October 8, 2018 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 Quote Link to comment Share on other sites More sharing options...
russg Posted October 8, 2018 Share Posted October 8, 2018 (edited) 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 1 Quote Link to comment Share on other sites More sharing options...
manterola Posted October 8, 2018 Share Posted October 8, 2018 (edited) 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 2 Quote Link to comment Share on other sites More sharing options...
adam1977 Posted October 8, 2018 Author Share Posted October 8, 2018 Many thanks, 2.5mm x 5.5mm it is, now sorted 1 Quote Link to comment Share on other sites More sharing options...
xrbrevin Posted October 9, 2018 Share Posted October 9, 2018 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 1 Quote Link to comment Share on other sites More sharing options...
adam1977 Posted October 9, 2018 Author Share Posted October 9, 2018 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 Quote Link to comment Share on other sites More sharing options...
+Nezgar Posted October 9, 2018 Share Posted October 9, 2018 3amp is good if you use that splitter. 1 Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted October 9, 2018 Share Posted October 9, 2018 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. 2 Quote Link to comment Share on other sites More sharing options...
adam1977 Posted October 10, 2018 Author Share Posted October 10, 2018 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 1 Quote Link to comment Share on other sites More sharing options...
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