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Powerin Up Problem

 
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Pasto



Joined: 11 Jul 2006
Posts: 1

PostPosted: Tue Jul 11, 2006 4:54 pm    Post subject: Powerin Up Problem Reply with quote

Hi guys....

I have a question related to powering up a circuit I have ....

Actually it is the circuit of Vehicle tracking unit.... it is capable of Input voltage of 9 - 28 VDC...

My problem is that: the power source I have provides me with negative voltage ( or I how only the negative voltage available or reachable)... now my question is:

How can I power up my tracking unit using this negtive voltage source,,, what are the possible options that can be done??

thanks for ur help Smile
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vtech



Joined: 08 May 2006
Posts: 1264
Location: USA

PostPosted: Wed Jul 12, 2006 9:10 am    Post subject: Reply with quote

Your DC voltage source can either be used as a positive or negative source by simply reversing poles as long as there is one ground reference.
In other words, a negative supply measured from point A to B is simply positive when measured from B to A. So by reversing polarity you should be able to run your device-----unless I misunderstood your question. Cool
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