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Testing of Overvoltage Module

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hivanhaecker(at)gmail.com
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Posted: Mon Nov 30, 2015 3:46 pm Post subject: Testing of Overvoltage Module

I have a need to test my ov module. I found a link from the aeroelectric connection detailing the method. Not having a variable dc power supply, I have ordered one (Tekpower TP3005T). My question is what purpose is the precision voltmeter shown in the link for the test. Doesn't the dc power supply setting tell you what voltage you are supplying to the ov module? Sorry if my question displays a lack of basic knowledge, but that's how I learn.



Ivan Haecker

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ceengland7(at)gmail.com
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Posted: Mon Nov 30, 2015 5:28 pm Post subject: Testing of Overvoltage Module

On 11/30/2015 5:44 PM, H. Ivan Haecker wrote:

 	  Quote: 	
		   I have a need to test my ov module. I found a link from the 

 aeroelectric connection detailing the method. Not having a variable dc 

 power supply, I have ordered one (Tekpower TP3005T). My question is 

 what purpose is the precision voltmeter shown in the link for the 

 test. Doesn't the dc power supply setting tell you what voltage you 

 are supplying to the ov module? Sorry if my question displays a lack 

 of basic knowledge, but that's how I learn.



 Ivan Haecker


	


Answer is, it depends.  Lots of 'old school' variable supplies had 

analog meters that, even if inherently accurate, didn't have enough 

resolution to read less than ~1/2-1 volt of change; not good enough when 

you're trying to set something to the nearest tenth of a volt. Even if 

the PS has a built in digital meter, it'd be a good idea to verify it's 

accuracy with a known good digital meter before trying to set up 

something like the OV module.



Charlie

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nuckolls.bob(at)aeroelect
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Posted: Tue Dec 01, 2015 5:43 am Post subject: Testing of Overvoltage Module

At 05:44 PM 11/30/2015, you wrote:

  	  Quote: 	
		  I have a need to test my ov module. I found a link from the aeroelectric connection detailing the method. Not having a variable dc power supply, I have ordered one (Tekpower TP3005T). My question is what purpose is the precision voltmeter shown in the link for the test. 	


   If your power supply voltmeter is of sufficient

   resolution/accuracy, then the external voltmeter

   is unnecessary.



  	  Quote: 	
		  Doesn't the dc power supply setting tell you what voltage you are supplying to the ov module? Sorry if my question displays a lack of basic knowledge, but that's how I learn. 	


   The TP3005 is adequate to the task 'barefoot'.



   Just turn the current setting all the way up,

   then hook the ovm across the power supply output

   terminals. Slowly increase the voltage until

   the ovm 'trips' (Current jumps up, voltage goes

   down). The trip should be in the range of 16.0

   to 16.5 volts.



 

   Bob . . .

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