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Low resistance measurement

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rnjcurtis(at)charter.net
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Posted: Wed Sep 16, 2015 9:44 am Post subject: Low resistance measurement

Bob,

I am interested in constructing a low resistance measurement adaptor.  I have a LM337.  Can I use this device, in place of the LM317, with a small modification to your schematic?

Roger

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nuckolls.bob(at)aeroelect
Guest

Posted: Wed Sep 16, 2015 10:31 am Post subject: Low resistance measurement

At 12:38 PM 9/16/2015, you wrote:

  	  Quote: 	
		  Bob,



 I am interested in constructing a low resistance measurement adaptor.  I have a LM337.  Can I use this device, in place of the LM317, with a small modification to your schematic?



 Roger



 

  	


   Sure, any of the 3-terminal, adjustable regulators

   can be adapted to this service. Here's the schematic

   for the AEC9008-3 adapter



 [img]cid:7.1.0.9.0.20150916132723.0609fe38(at)aeroelectric.com.0[/img] 



   If you choose to include the 1.0 Amp excitation

   option, be aware that the regulator chip warms

   up rapidly. Make QUICK measurements or include

   appropriate heat sink. 0.1A measurements 

   require no heat-sink.



 

 

   Bob . . .

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nuckolls.bob(at)aeroelect
Guest

Posted: Wed Sep 16, 2015 11:27 am Post subject: Low resistance measurement

At 01:54 PM 9/16/2015, you wrote:

  	  Quote: 	
		  The LM337 being a negative regulator, can this circuit be used by reversing the battery polarity, or there other issues?



 Roger

 	


   Ooops . . . missed that. Yes, you can turn the battery

   around and it will work fine . . .



 

 

   Bob . . .    [quote][b]

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