maybe i need transformer - plotter power!!! - Electronic Circuits Projects Diagrams Free

Clyd3 · 10th January 2007, 03:58 PM

i was given a plotter recently, a roland dxy-1200
it supposedly still works, but i do not have the transformer i need for it.
it has a 3 pin power connector, saying it needs 9v and 31v.
i take it the middle, and higher pin is the gound???
can i hook up my variable pwr supply and a separate 9v supply to this, or is it a naughty, not so wise, silly thing to do???

evandude · 10th January 2007, 04:19 PM

Unless someone here happens to have that plotter or the manual for it, nobody can say for sure which pins are which, and it's a bad idea to just guess. If you open it up, perhaps you can find some markings on the PCB or at least look at what kind of circuitry each pin goes to. Ground should be easy to identify, look for any chips in the plotter, find a datasheet, see which pins are ground, and use a multimeter to see which of the power pins connects to it. 9v and 31v will probably be trickier, but I'd expect one to go to some power/motor driver circuitry and the other to go to control circuitry.

Not knowing the current requirements of the power supply, it may not work to just hook up any old 31v and 9v power supplies to it, however if the supplies are capable of a reasonable amount of current it's probably worth a shot.

All in all, unless you can find some documentation, it would be all about making the most educated guess you can before hooking power up to it, so you don't blow anything up.

Clyd3 · 17th January 2007, 08:29 PM

i followed the pcb tracks - one was easy - ground - cause one lead to 7805s and the other to twentysomething volt relay

i was scared to open it, but being such a simple shape, it all went well, thanks for the advice napoleon

Hero999 · 20th January 2007, 06:48 PM

Do you know what current it needs?

Are there any fuses which might give you an indication.

It's probably quite easy to build a PSU for it, an LM317 regulator, transformer, rectifier and smoother capacitor will probably do the job.

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10th January 2007, 03:58 PM	(permalink)
Clyd3	maybe i need transformer - plotter power!!! i was given a plotter recently, a roland dxy-1200 it supposedly still works, but i do not have the transformer i need for it. it has a 3 pin power connector, saying it needs 9v and 31v. i take it the middle, and higher pin is the gound??? can i hook up my variable pwr supply and a separate 9v supply to this, or is it a naughty, not so wise, silly thing to do??? __________________ Under the terms of the GPL - General Posting License [Meaning mods may modify, delete and redistribute any of the posts herein contained, 'cause there's no stopping you]

10th January 2007, 04:19 PM	(permalink)
evandude	Unless someone here happens to have that plotter or the manual for it, nobody can say for sure which pins are which, and it's a bad idea to just guess. If you open it up, perhaps you can find some markings on the PCB or at least look at what kind of circuitry each pin goes to. Ground should be easy to identify, look for any chips in the plotter, find a datasheet, see which pins are ground, and use a multimeter to see which of the power pins connects to it. 9v and 31v will probably be trickier, but I'd expect one to go to some power/motor driver circuitry and the other to go to control circuitry. Not knowing the current requirements of the power supply, it may not work to just hook up any old 31v and 9v power supplies to it, however if the supplies are capable of a reasonable amount of current it's probably worth a shot. All in all, unless you can find some documentation, it would be all about making the most educated guess you can before hooking power up to it, so you don't blow anything up. __________________ EEgeek.net

17th January 2007, 08:29 PM	(permalink)
Clyd3	i followed the pcb tracks - one was easy - ground - cause one lead to 7805s and the other to twentysomething volt relay i was scared to open it, but being such a simple shape, it all went well, thanks for the advice napoleon __________________ Under the terms of the GPL - General Posting License [Meaning mods may modify, delete and redistribute any of the posts herein contained, 'cause there's no stopping you]

20th January 2007, 06:48 PM	(permalink)
Hero999	Do you know what current it needs? Are there any fuses which might give you an indication. It's probably quite easy to build a PSU for it, an LM317 regulator, transformer, rectifier and smoother capacitor will probably do the job. __________________ I also post at the following sites: http://www.stop-microsoft.org http://www.heated-debates.com Screen name: Aloone_Jonez And http://www.silicontronics.com, same screen name as here.