Malcolm, I've just been trudging through the snail's pace web site that is Maplin Electronics ;) They don't have that particular connector, nor could I find it on Radiospares, so I've plumped for two 3 pin PCB header connectors which have the same pitch and can hopefully be glued side by side to do the job. I don't like doing it this way, because I'd really like to restore the PSU as close as possible to its original state, but also I need to find out if this NewBrain actually works. ;)
Regards, Adrian --- On Tuesday, October 27, 2009, 6:38:02 PM, you wrote: MC> In message <[email protected]>, Adrian D. Ives MC> <[email protected]> writes MC> Hi Adrian, MC> I have a Grundy NewBrain PSU, that is labelled as - 6.5v at 1.2A - with MC> the other information rubbed over with a black marker of some sort. MC> It is enclosed in a brown thermoset plastic ( a longer rectangular shape MC> that the original Sinclair PSU ) and has two proper metal heating MC> distribution fins. MC> I have used it with my QL machines for many years, with no problems - it MC> a lot quieter and cooler in operation than an original Sinclair version. MC> It has the 3-pin connector to fit the QL machine. MC> So, this will be the "converted" version for the QL. MC> Which you also appear to have, too. MC> Try Maplins, for example, for the correct connector that you are MC> seeking. MC> Good luck with the "NewBrain" ... I hope your "old brain" is up to the MC> task ... :-) >>I recently acquired a Grundy NewBrain PSU with the intention to use it >>with a NewBrain Model A that I had recently purchased second hand. As >>soon as the unit arrived I knew that I recognized it from somewhere, >>yet I have never had any previous exposure to the NewBrain (this new >>interest only came about after watching Micro Men). Anyway, I was >>astonished to find that the computer-side lead terminated in a QL >>power connector. Needless to say this will not fit the 6 pin BERG >>connector on the NewBrain and, anyway, three pins can't carry three >>power lines and a ground return. >> >>I did some research on the internet and discovered that it's possible >>to use a NewBrain PSU to power the QL by connecting directly to the >>transformer secondary for the AC source and shorting out the >>temperature trip to allow the unit's 6.5V DC output to overrun enough >>to run the QL's 9V input (QL needs 1.8A, the NewBrain PSU is rated to >>1.2A). I have to say this seems like a rather dubious arrangement to >>me, but, anyway, my real question is this: >> >>I'm sure I have a vague memory of using a PSU just like this to run a >>QL in the distant past. Were these ever converted and sold >>commercially as alternative QL PSUs? I'm just interested. >> >>And I don't suppose anyone could recommend a source for the 6 pin BERG >>connector (two rows of 3, keyway centre top, opposite side to guide) >>so that I can put this PSU back to its original state? >> >>Regards, >> >> >> >>Adrian >> >> >>_______________________________________________ >>QL-Users Mailing List >>http://www.q-v-d.demon.co.uk/smsqe.htm _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
