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Why do we want fast continuity detection in a multimeter?

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Fungus:
The best continuity test of any meter I know, Brymens and Flukes included, is the $8 ANENG AN9205A.

https://www.aliexpress.com/w/wholesale-aneng-an9205a.html

It's quite scratchy, the beeper is loud and it has a very bright LED on the front for continuity.

For that price you could tape one to the back of your workbench and just use it for that.

It consumes about 2mA in open continuity mode and about 13mA when beeping with the LED lit up. The battery will last a loooong time.

The only bummer is that it has APO and switches itself off after 40 minutes.  >:(

(dons asbestos underpants and waits for the meter nannies to tell me "it's unsafe!!")

Fungus:
I made a video of the AN9205A in action, with stock, never-cleaned probes:



Was I "zipping" fast enough???  :popcorn:

Fungus:
I did another test of the continuity on the AN9205A because I saw a flaw in my methodology on the previous one - by inserting the probe between the pins on the edge connector I was connecting with maybe two or three pins on the MCU - a big advantage.

This time I connected to a single pin and tried to beat the tester - and failed! I zipped so fast that the beep became almost too short to hear but it always flashed the LED (the LED is much brighter IRL than it seem in the video and is really easy to see).

I zipped about as fast as I could and it never failed once. It's not because I'm pressing hard, it does it with just the weight of the probe (see video). Who needs gold plating??  :-//



I tried the same test with mu Brymen and Fluke meters and they did OK but the bright LED is a big plus.

So.... I'm calling it, this is the best continuity tester of any meter.  :box:

Edit: I measured the threshold resistance, it beeps below 48 Ohms.

vk6zgo:

--- Quote from: BeBuLamar on June 04, 2023, 07:53:08 pm ---I use the resistance measurement to check for continuity normally. It would tell me how good the continuilty is. I use the contnuity function when it's intermittent and it happens to quick to take a reading.

--- End quote ---

Same here--I was brought up on analog meters & don't trust "continuity", as many of them will still beep with 50 or so \$\Omega\$ resistance, which in some circuits may affect its function.

Another thing is, that with some DMMS, the diode test & continuity are the same functions, so any semiconductor junctions may be turned on. The resistance range is normally too low in voltage for this to happen.

Caliaxy:

--- Quote from: Hogwild on June 04, 2023, 05:14:41 am ---In many of the Dave's reviews, we watch him check the continuity test function of a meter by shorting the two leads and listening for how quickly the meter beeps. Faster is better, apparently.

--- End quote ---

Instant gratification. Kids these days…

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