Eric M. Jones
Joined: 10 Jan 2006
Posts: 565
Location: Massachusetts
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 Posted: Wed Jun 06, 2007 7:34 am Post subject: Voltage Conversion |
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I see this subject going around occassionally, usually 12 to 5, 12 to 28, or 28 to 12. I would like to add the critically important parts of the question....
1) Most important--What is the current? This is important because the conversion technique depends on the current required. If you need milliamps, just add on the requisite batteries and change them at the annual. If you need amps continuously, use a little power supply from Astrodyne (my favorite online power supply store).
2) What is the duty cycle? If you need 100 amps for several seconds, that takes a big battery. If you need 100 amps for milliseconds, you need a capacitor.
3) Weight? Some techniques are lighter than others. Lighter usually means more expensive and sometimes less reliable.
"Democracy is the theory that the common people know what they want and deserve to get it good and hard." -- H. L. Mencken
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_________________
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net |
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