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Power Supply

Power Supply

2010-02-16 by Dustin T

Ok guys, here's another question for ya; My DTXpress that I ordered doesn't come with a power supply but I have this big ass power supply from my Roland TD-7 that is: AC Adaptor IN: AC120V~60Hz 23W OUT: AC12V~1500mA. Can I use this? Thanks for helping this electronic idiot NOT fry his new brain!

Re: [DTXpress] Power Supply - BS of D

2010-02-16 by S-E-A

Hi Dustin.
Not recommended!!!!

The voltage is ok, but the polarity is reversed, Roland's have the centre pin as -ve. The Yammy has centre pin +ve.
As the current the Roland PSU can deliver is quite high, any protection within the DTXpress module may soon fail.
Blue smoke of death..

Get a 'wall wart' or 'brick on a lead' adapter..
12V 800mA output. Make sure it is regulated!!
Make sure you get the polarity correct.

On 16/02/2010 05:36, Dustin T wrote:
Show quoted textHide quoted text

Ok guys, here's another question for ya; My DTXpress that I ordered doesn't come with a power supply but I have this big ass power supply from my Roland TD-7 that is: AC Adaptor IN: AC120V~60Hz 23W OUT: AC12V~1500mA. Can I use this? Thanks for helping this electronic idiot NOT fry his new brain!


Re: Power Supply

2010-02-16 by keith1200rs

--- In DTXpress@yahoogroups.com, "Dustin T" <dustinorintalley@...> wrote:
>
> Ok guys, here's another question for ya; My DTXpress that I ordered doesn't come with a power supply but I have this big ass power supply from my Roland TD-7 that is: AC Adaptor IN: AC120V~60Hz 23W OUT: AC12V~1500mA. Can I use this? Thanks for helping this electronic idiot NOT fry his new brain!
>

DON'T DO IT!!!  The Yamaha wants 12V DC - the one you described is AC (=big bang).

A generic adaptor will be fine. My UK one is 12V 0.5A DC centre positive (which is the opposite way round to most things).  Most adaptors have a polarity changer.

I wouldn't worry too much about it being regulated - the Yamaha UK supplied one isn't and give out nearly 18V off load!

Keith.

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