What is DVA

G

g6ips3y

Cadet
Joined
Jul 29, 2005
Messages
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I am trying to test a stator for the 135 Johnson 1976 ,
I don't know what DVA is , Can anyone tell me ?
I Graduated from United Auto workers transmission school , But I have little electronic experience
 
K

KeyWestSkipper

Petty Officer 2nd Class
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Nov 2, 2009
Messages
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Re: What is DVA

direct voltage adapter?

DVA means direct voltage adapter. It's just another name for a peak reading voltmeter. The one I have is made by Stevens instruments. It's different from a standard voltmeter in that it's designed to read voltages that are not constant. It reads the peak or highest voltages from a source that gives a voltage that rises and falls. For OMC and other brands of conventional 2 strokes it's required equipment in service manuals for testing ignition components.

(from http://continuouswave.com/ubb/Forum6/HTML/000915.html)
 
jtexas

jtexas

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Messages
8,646
Re: What is DVA

Alternating current changes direction many times each second (depends on the "frequency"), so "100 volts peak AC", for example, alternately rises to +100V and falls to -100V. Your multimeter, set on "AC", will calculate and display an "average voltage", which will be somewhere around 60 to 70 volts depending on a number of factors. But a peak reading meter, or a your multimeter with a "DVA" attached, will display 100V.

an adapter for use with your multimeter
http://www.stevensinstrument.com/peak_dva.htm

diy
http://forums.iboats.com/showthread.php?t=180482
 
G

g6ips3y

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Joined
Jul 29, 2005
Messages
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Re: What is DVA

Would you believe it if you saw a Multi meter at Harbor freight and tool with a PVA in it for $14.99 ?
I actually bought one for $2.99 I wanted to see a digital read on My battery , before And after start for a general Idea if it was charging . BUT the $2.99 one will work for about 1 minute on a battery that is over 10 AMPs , But it showed me a pre start 11 volts ,... Engine running 13.7 to 14.1 volts variation ,I suppose this means it's charging , But the darn thing blew the fuse . So I suppose I will try the $14.99 one if I can see that it handles the AMP of an out board , do You know what AMPS the meter shold handle ? or is it too good to be true that a multi meter will work for 14.99
 
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