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Re: [OM] modification for silver oxide battery

Subject: Re: [OM] modification for silver oxide battery
From: "Neil Bell" <neil.bell@xxxxxxxxxxx>
Date: Sun, 16 May 1999 10:22:35 +0000
>unfortunately there is no polarity "standad" for ohmmeter test leads
>but very frequently for DVM's they do seem to have the positive tied
>to the positive test lead. (I seem to remember old analog 
>multimeters are often the other way round) If the meter red lead is 
>positive when testing Ohms then your assumption above is correct. If 
>you want to do a very simple test before soldering it in, so that 
>you are guaranteed to get it right do the following: get a resistor 
>of about 1K Ohm (any value from 1 to 10k would also work). hook it 
>up to the silver oxide battery positive terminal . Connect the other 
>end to your terminal X . Connect terminal A to the battery negative. 
>You can just get somebody to hold the pieces in contact. Measure the 
>voltage accross the diode it shouild be about 220mV or so (if 1k is 
>used, or 160mV or so if 10k used). If it is 1.55-1.6V then you need 
>to swap terminals for your installation (or you are not making good 
>contact with the resistor!)

Thanks Tim, I'll give that a go.


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