ESR Capacitor tester

B

bryan

Member

• Nov 17, 2009

• #1

Hello:

Looking to build a ESR cap tester. Wondering if anybody has built this one and can comment on it. Seems like an easy build.

Capacitor ESR Tester

Thanks

 

EN0

Member

• Nov 17, 2009

• #2

It certainly looks like that project is well worth the time, but instead of an analog display you might find a digital one more satisfactory.

Austin

 

B

bryan

Member

• Nov 17, 2009

• #3

True, but haven't been able to find many on the web. There is one from Elektor magazine that I found, but uses a double sided board and a lot more work.

 

crutschow

Well-Known Member

Most Helpful Member

• Nov 17, 2009

• #4

If you don't need the precision of a digital readout, an analog readout is generally easier to read and observe trends. Since you usually aren't interested in high accuracy in measuring ESR, I would stay with the analog readout.

 

EN0

Member

• Nov 17, 2009

• #5

Yes you could still go with an analog display if that would make things easier for you; but to truly get the most accurate reading possible a digital display is the way to go.

Austin

 

Last edited: Nov 17, 2009

crutschow

Well-Known Member

Most Helpful Member

• Nov 17, 2009

• #6

Accuracy is sometimes overrated.

 

B

bryan

Member

• Nov 17, 2009

• #7

Just need to find aa source for a cheap 50ua meter. Not cheap if buying from the major retailers like newark or digikey. I suppose I could connect the output to my dvm

 

M

mneary

New Member

• Nov 17, 2009

• #8

A digital meter might have better resolution, but that has little to do with accuracy.