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ANENG AN8008/AN8009 Current Sense Resistor

Somewhat to my surprise, Aneng AN8008/AN8009 multimeter PCBS sport what looks like a reasonably accurate current sense resistor on the 10 A input:

AN8009 10 A current shunt - top view
AN8009 10 A current shunt – top view

The legend says 0.01R and the conductor doesn’t look quite like pure copper:

AN8009 10 A current shunt - side view
AN8009 10 A current shunt – side view

The indentations look like clamp marks from the bending jig, rather than “calibration” notches made while squeezing the wire with diagonal cutters and watching the resistance on another meter.

One might quibble about the overall soldering quality, but one would also be splitting hairs. I doubt the meter leads could withstand 10 A for more than a few seconds, anyhow.

If you buy enough of something, you can buy pretty nearly anything you want, even cheap precision resistors!

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  1. #1 by Vedran on 2019-04-03 - 11:35

    I have both 8008 and 8009 and use them all the time. 8008 has a finicky rotary switch and sometimes it takes a few tries to switch to resistance measurement, but otherwise it’s been a champ. 8009 is issue free so far.

  2. #3 by Vedran on 2019-04-04 - 11:39

    It got some semi-quality workbench time but I couldn’t identify anything as obviously wrong at the time and concluded it was an error in design or production tolerances. Now that I have a known good sample I could go back in and compare, but by now I actually learned the correct tongue angle and wrist flick to get the thing to cooperate, so I’d be solving a non existing problem :)

  3. #4 by Glenn on 2019-07-24 - 05:37

    Wow, my 8009 doesn’t have the beefed up solder traces nor the M-shaped current shunt. It just has normal green tracks and a wimpy U-shaped current shunt. I have other meters for anything more than a couple amps anyway but sometimes if this is the closest it might get used for small stuff like checking short-circuit voltage of a small 12V solar panel. And today I finally tried to measure a car battery voltage while the leads were still in the 10A position from previous use :-(

    There wasn’t any explosion, or even any little bang. Nothing. In fact I repeated my mistake several times thinking I didn’t have a good enough probe connection to read the voltage. Then I saw the jack position and kicked myself :-) I’m usually so careful about putting them straight back to voltage jacks but I guess it can happen. I found this page while looking into replacement fuses.

    We scold at these tiny fuses and they’re certainly not up to the CAT rating printed on the front, but mine did it’s job safely and quietly today with no smoke or scorch marks. These are handy little meters for lower power stuff.

    Would be interesting to know if your beefed up 10A arrangement is a later enhancement, or if mine is later ‘cost efficiencies’. Both my serial numbers are 744044xx.

    • #5 by Ed on 2019-07-24 - 07:49

      voltage while the leads were still in the 10A position

      Wear the t-shirt proudly! We should have a parade! [grin]

      If serial numbers mean anything, mine seem much higher:
      AN8009 = 901019xxx
      AN8008 = 908006xxx

      Perhaps the first three digits are a year-week date code?