<DIV><BR><BR><B><I>Dave Andruczyk <djandruczyk@yahoo.com></I></B> wrote:
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<P><BR>--- Frank Kumro <FRANK@DIGITAL-IGNORANCE.COM>wrote:<BR>> I have a 19" Dell Trinitron monitor and occasionally the actual picture <BR>> will begin to move only a small amount from left to right but its enough <BR>> to annoy the hell out of me. The only time it happenes is when I need to <BR>> get some serious work done, anyone know what might be causing this <BR>> problem? Anything generic ?<BR><BR>(((((((((((I've seen this mainly in places with poor wiring, or too much stuff on <BR>one circuit. The issue lies in that the ground line (the round pin on the<BR>plug)<BR>and the neutral line (the bigger blade on the same plug) are differing in<BR>voltage. The severity of the difference in potential between the two lines<BR>causese the jitters and "jiggles" commonly seen in monitors. You can<BR>demonstrate<BR>it by loading down the circuit more (turn on more things.) The main current<BR>always<BR>flows across the hot/neutral lines, and basic electricicty theo!
ry states
that <BR>as current goes up, so does voltage drop. In home electrical systems the<BR>neutral (white)<BR>and ground (green or bare) wires are ties TOGETHER in the fuse box (Also to a <BR>grounding rod attached to the building). On a loaded circuit the neutral which<BR>can be <BR>carrying significant amperage will begine to "float" above the potential of the<BR>ground<BR>line, This causes issues with computer monitors and leads to the "jiggles".<BR><BR>Loads that have motors (fridge, dishwasher, etc..) make the effect more<BR>pronounced if they<BR>are on the same circuit as the computer.<BR><BR>A good true UPS (an "off line" one that is constantly running off the inverter)<BR>can usually<BR>solve this issue and cleanup the power going to your monitor. The problem is<BR>most UPS's are<BR>completely pass through devices until the power fails and then they switchover,<BR>which doesn't <BR>help the problem..<BR><BR>The best solution is to move the computer/monitor to it's own cir!
cuit
that<BR>doesn't have <BR>any other big loads on it. (loads like incandescent lamps cause the least<BR>problems, anything<BR>with a motor causes the most issues. (my monitor jiggles when the fridge comes<BR>on..))))))))))))))))))</P>
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<P><FONT face="arial black" color=#0000bf size=4>Hi all, I've run into this problem all the time. Clients often have EMI, RFI, Voltage, or Circuit problems. The only way around this is to set up your equipment on it own Circuit line and hope for the best.</FONT></P>
<P><FONT face="arial black" color=#0000bf size=4>TheCactusKid:)<BR></FONT><BR>sorry for such a long winded response... :)<BR><BR><BR><BR>=====<BR>Dave J. Andruczyk<BR><BR>__________________________________<BR>Do you Yahoo!?<BR>Find out what made the Top Yahoo! Searches of 2003<BR>http://search.yahoo.com/top2003</P></BLOCKQUOTE></DIV><p><hr SIZE=1>
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