Products > Test Equipment
AN8008 US $19, 9999count, 1uV, 0.01uA, 0.01Ohm, 1pF resolution meter
floobydust:
That shunt measures about 0.015 ohms.
If I turn the rotary switch back and forth a few times, it can go down to less than 0.2 ohms but after a month it goes back up to several ohms or worse. Once it was over 50 ohms.
It seems to be the chinesium copper alloy the wipers are made of, with it's dull brown look and high sulphur content. The PCB has good gold ENIG finish still.
For the meter I bought it from the ANENG store, it seems the metals are such low quality I consider it too unreliable. I could try electroplate the wipers with something.
HKJ:
--- Quote from: floobydust on August 25, 2019, 10:05:43 pm ---That shunt measures about 0.015 ohms.
If I turn the rotary switch back and forth a few times, it can go down to less than 0.2 ohms but after a month it goes back up to several ohms or worse. Once it was over 50 ohms.
--- End quote ---
You are definitely doing something wrong, the shunt is not switched but permanently connected to the input terminals.
The Soulman:
--- Quote from: HKJ on August 26, 2019, 06:59:05 am ---
--- Quote from: floobydust on August 25, 2019, 10:05:43 pm ---That shunt measures about 0.015 ohms.
If I turn the rotary switch back and forth a few times, it can go down to less than 0.2 ohms but after a month it goes back up to several ohms or worse. Once it was over 50 ohms.
--- End quote ---
You are definitely doing something wrong, the shunt is not switched but permanently connected to the input terminals.
--- End quote ---
Read the post on the previous page. :-X
Edit: I cant get the link to work, but its a couple of posts back.
001:
--- Quote from: floobydust on August 25, 2019, 10:05:43 pm ---For the meter I bought it from the ANENG store, it seems the metals are such low quality I consider it too unreliable. I could try electroplate the wipers with something.
--- End quote ---
Try to add simple solder bloob
Why not?
ebastler:
--- Quote from: The Soulman on August 26, 2019, 10:07:26 am ---Read the post on the previous page. :-X
Edit: I cant get the link to work, but its a couple of posts back.
--- End quote ---
Hmm, which post? Could you indicate the reply number please?
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