The power supply diagram I made is on my website now - http://www.dilwyn.me.uk/docs/hardware/qlpsu.png - and has been altered to add the power supply label from a USA QL as well as a British one.
Next, can anyone help me with the details from a European QL? I presume the output voltage to the QL will probably be the same, but the nominal mains input details may be a little different to the British one.
I was a little surprised to find that this information wasn't already in the public domain, at least if it is I haven't found it yet. There are a load of photos of QLs and accessories on Urs's photo gallery website but haven't yet found a photo of the label on a European QL PSU.
Solved: QL psu cord
Re: Solved: QL psu cord
Mine is originally from Finland and has the following information on the label:dilwyn wrote: Next, can anyone help me with the details from a European QL? I presume the output voltage to the QL will probably be the same, but the nominal mains input details may be a little different to the British one.
IN: 220V ~ 50Hz. 0.22A
OUT: 9V. D.C. --- at 1.8A
OUT: 15.6V A.C. ~ at 0.2A
Re: Solved: QL psu cord
Mine (German MGG QL, Samsung made) says the same. And, in contrary to what is on the Computer label, it also says: "Made in England". So they are probably all the same.
Tobias
Tobias
ʎɐqǝ ɯoɹɟ ǝq oʇ ƃuᴉoƃ ʇou sᴉ pɹɐoqʎǝʞ ʇxǝu ʎɯ 'ɹɐǝp ɥO
Re: Solved: QL psu cord
I got my transformer which i planned to use in QL but find a problem there's four wires coming out of the transformer two is 12vac and other two is 9vdc how can i connect those to QL because it only have tree pins, i know now the midle one is gnd(0V) but how does it affect if i connect dc gnd and one of the ac lines together, does my transformer go boom after that?
Re: Solved: QL psu cord
If you're building a whole new PSU, things get interesting. The QL on-board power regulation was never the best, but it's now approaching 30 years old.
You can safely feed >13.5v DC into the 15.6v AC line and it will work just fine. As soon as it hits the bridge rectifier inside, it's all the same.
You can safely feed >13.5v DC into the 15.6v AC line and it will work just fine. As soon as it hits the bridge rectifier inside, it's all the same.
Re: Solved: QL psu cord
Thanks for the information of the dc current it makes it little easier now to build new transformer.