PSU alternative?

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Paul
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Re: PSU alternative?

Postby Paul » Fri Jul 10, 2015 3:14 pm

vanpeebles wrote:Can it have a blue LED too? 8-)

As long at it's shape is a rectangle 8-)


RWAP
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Re: PSU alternative?

Postby RWAP » Mon Jan 11, 2016 4:36 pm

Has any progress been made with regards to offering an alternative QL PSU?

I seem to get asked every couple of weeks if I have any in stock - there must be plenty of QLs out there waiting for a PSU....


dex
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Re: PSU alternative?

Postby dex » Fri Feb 17, 2017 10:35 pm

New 3D model of the QL PSU connector for 3D printer.

Image
Image
Image

2 EUR per piece.

http://oldcomp.cz/viewtopic.php?t=4831&p=58746#p58746 (czech only)

(I am not involved in this.)


Paul
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Re: PSU alternative?

Postby Paul » Sat Feb 18, 2017 5:57 am

Is someone registered in that forum?
I'd really be interested in five of these plugs.
Any help appreciated.
kind regards Paul


dex
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Re: PSU alternative?

Postby dex » Sat Feb 18, 2017 10:33 pm

Paul wrote:Is someone registered in that forum?
I'd really be interested in five of these plugs.


I am "read only" member in OldComp forum (cannot post, but can send private messages).
There are two possibilities,

1) ask for the data for 3D printer, and someone with 3D printer and enough time can print sufficient amount of connectors,

2) arrange a group buy (if Pavel will have sufficient time to print required amount).


Paul
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Re: PSU alternative?

Postby Paul » Sun Feb 19, 2017 12:00 pm

Both would be ok for me.
I have a 3D printer at work.
kind regards Paul


dex
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Re: PSU alternative?

Postby dex » Sun Feb 19, 2017 9:13 pm

I have got response from the author:

"The model is not ready to be released, the printed piece was not tested on real QL already.
It will be released, but not now immediately. First it must be debugged (complex shape, small details).
Tell to all interested, that I'm working on it, just wait a moment.
They can also send e-mail to ..."

(I will send e-mail address upon request via private message, just to avoid spam)


dex
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Re: PSU alternative?

Postby dex » Mon Mar 13, 2017 9:13 pm

Ready and finished:
http://oldcomp.cz/viewtopic.php?t=4831&p=59648#p59648

Image

CZK 75 (including screw and 4 contact pins - one is spare) . approx. EUR 2.75, plus postage.


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Cristian
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Re: PSU alternative?

Postby Cristian » Tue Nov 07, 2017 1:34 pm

1024MAK wrote:As I said above, you would need two transformers.
One with a 15V secondary

On the contrary, the service manual says: "supplies 9 volts d.c. at 2 amps and 44 volts peak-to-peak a.c. to the board input on connector". Is this a mistake (or a big misunderstanding of mine)?


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Re: PSU alternative?

Postby Martin_Head » Tue Nov 07, 2017 2:29 pm

Cristian wrote:
1024MAK wrote:As I said above, you would need two transformers.
One with a 15V secondary

On the contrary, the service manual says: "supplies 9 volts d.c. at 2 amps and 44 volts peak-to-peak a.c. to the board input on connector". Is this a mistake (or a big misunderstanding of mine)?

44 volts peak to peak would be +22v and -22 v. Remember it's used to create a +12v and -12v rails. Also if I remember correctly to convert peak to peak to RMS (as the transformer would be specified in) you multiply by 0.707 which gives 15.554v. So I think the original quote should have been a transformer with a 15 - 0 - 15 secondary.



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