DC-DC converter ...wiring and tolerance?

VvvvvV · 10th January 2008, 02:01 PM

I found some cheap unknown DC-DC converters rated 48/5/2A, they are the block type about 5cm² and with 4 pins...

is it possible to link the output pins in a series to make 10V?

are these things inherently flexible? what will happen to the output if I put a 36V current on there -I can afford to blow a couple up to find out

?

theAnonymous1 · 10th January 2008, 02:14 PM

The outputs are isolated, so two in series should work.

A similar 48v to 5v converter I looked up can take an input of 18v to 75v, so 36v should work fine.

VvvvvV · 10th January 2008, 02:22 PM

thank you so much! I just had a go at 36 the output is perfect, and in series as well! fantastic ...it is to put some lights on an electric bike

VvvvvV · 14th January 2008, 09:22 PM

what would happen if I wired it to a voltage that was outside of specifications? for example too low or too high? Would it just be very inefficient or is there something I could measure to find out what the chips can handle?

Narcisse91 · 23rd January 2008, 04:23 PM

Without knowing ANYTHING about them, there is risk of damaging them, but most of the bricks I have used will just shut off when the voltage gets too low or too high. A lot have their own built in protection for that type of thing.

VvvvvV · 23rd January 2008, 05:38 PM

thanks!

10th January 2008, 02:14 PM	#2
theAnonymous1 diyAudio Member Join Date: Feb 2004 Location: Anonymityville	The outputs are isolated, so two in series should work. A similar 48v to 5v converter I looked up can take an input of 18v to 75v, so 36v should work fine. __________________ "If you don't like funerals don't kick sand in ninja's face."

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10th January 2008, 02:22 PM	#3
VvvvvV diyAudio Member Join Date: Oct 2003 Location: oxfrd	thank you so much! I just had a go at 36 the output is perfect, and in series as well! fantastic ...it is to put some lights on an electric bike

14th January 2008, 09:22 PM	#4
VvvvvV diyAudio Member Join Date: Oct 2003 Location: oxfrd	what would happen if I wired it to a voltage that was outside of specifications? for example too low or too high? Would it just be very inefficient or is there something I could measure to find out what the chips can handle?

23rd January 2008, 04:23 PM	#5
Narcisse91 diyAudio Member Join Date: Aug 2002 Location: NY	Without knowing ANYTHING about them, there is risk of damaging them, but most of the bricks I have used will just shut off when the voltage gets too low or too high. A lot have their own built in protection for that type of thing.

23rd January 2008, 05:38 PM	#6
VvvvvV diyAudio Member Join Date: Oct 2003 Location: oxfrd	thanks!

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