Subject:
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Re: Help with converting voltage on circuit board
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Newsgroups:
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lugnet.robotics, lugnet.technic
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Date:
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Sat, 8 Apr 2006 00:12:19 GMT
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Viewed:
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2814 times
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In lugnet.robotics, Dustin Jones wrote:
> I'd like to try to convert the output of the voltage on a 9750 from 4V to 12V
> (to control 12V trains :).
>
>
> Dustin
Hi Dustin,
I am an EE. Before I give you some advice, I need a bit more information about
9750 (I have never seen one in person):
- I see a power jack: I assume this powers the electronic circuit, not the
loads, right? What voltage is applied to this power jack?
- I see a plug marked 4V on the ouside of the box. Is this the supply for the
loads?
- I see groups of three plugs: is each plug in a group an independant output or
are the three plugs wired in parallel?
- Can the polarity of the ouptus be changed or are they just on/off outputs?
- Could you let me know what the various markings on the chips and transistors
are (I can't quite read them)?
- Could you take a picture of the back of the PCB (so I can figure out the
circuit)?
Greetings,
David Wegmuller
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