Meter Horror: Fuke (not Fluke) A830L - Page 1
Forum section: electronics / testgear

author: technix
author_rank: Super Contributor
timestamp: April 24, 2015, 06:17:56 pm
content: This meter is what I bought from a local hardware store when I was in high school. The battery clip broke so I had to tear it down and give it a repair, and the piece of crap inside scared me.(I still repaired it, since I really don't have a backup when my Zhenxing DT-890 decided to stop working.)That thing will blow up in my face sooner or later...How can I mod it to make it safer, if possible?

author: rollatorwieltje
author_rank: Unknown
timestamp: April 24, 2015, 06:55:47 pm
content: At least they're only claiming CAT II 600v. Doesn't look too bad for an 830 clone, a lot better than those with the vertically oriented banana sockets.

author: technix
author_rank: Super Contributor
timestamp: April 24, 2015, 07:52:56 pm
content: Quote from: rollatorwieltje on April 24, 2015, 06:55:47 pmThe problem is, where the hell is the fuse?!?

author: tszaboo
author_rank: Super Contributor
timestamp: April 24, 2015, 07:58:51 pm
content: Quote from: technix on April 24, 2015, 07:52:56 pmFuse is only for weak people, real men measure currents by the explosions in their bare hands.

author: wraper
author_rank: Unknown
timestamp: April 24, 2015, 08:02:43 pm
content: Actually it's pretty good for 830 style meters. It even has PTC, wow. Strange that they didn't put the fuse there, considering it is fairly decent for such kind of multimeters.

author: JBaughb
author_rank: Regular Contributor
timestamp: April 24, 2015, 08:13:33 pm
content: Are those JTAG headers or some sort of programming/diagnostic port on the top right next to the buttons?

author: wraper
author_rank: Unknown
timestamp: April 24, 2015, 08:29:08 pm
content: Quote from: JBaughb on April 24, 2015, 08:13:33 pmFor transistor hFE testing.

author: Grapsus
author_rank: Regular Contributor
timestamp: April 24, 2015, 09:12:37 pm
content: Notice the COB in the middle which is rotated by a very weird angle, not sure the electrons like it.

author: technix
author_rank: Super Contributor
timestamp: April 25, 2015, 05:22:41 am
content: Quote from: wraper on April 24, 2015, 08:02:43 pmI don't think that is a PTC.

author: retiredcaps
author_rank: Super Contributor
timestamp: April 25, 2015, 06:17:54 am
content: The component circled in red could be a PTC. If you measure the resistance of it, it should be between 500 and 1500 ohms.

author: smjcuk
author_rank: Frequent Contributor
timestamp: April 25, 2015, 09:22:33 am
content: Quote from: technix on April 24, 2015, 07:52:56 pmMy father said to me once: if you can't see the fuse then you are the fuse.

author: technix
author_rank: Super Contributor
timestamp: April 25, 2015, 10:07:54 am
content: Quote from: smjcuk on April 25, 2015, 09:22:33 amObviously I don't want to be the fuse myself...

author: ruffy91
author_rank: Regular Contributor
timestamp: April 25, 2015, 10:24:35 am
content: The fuse is on the breaker panel. It's Cat II, it's only safe to use it in fused circuits.

author: oldway
author_rank: Super Contributor
timestamp: April 25, 2015, 02:38:49 pm
content: My Fluke 73 I bought in 1993 has no fuse.(Input 10A unfused, no 400mA input.)Yet I have used it for many years in power electronics measurements (up to 550Vcc 5000A drives !!!) ... and I am still alive !Quite simply,neveruse the current inputs of your multimeter to make intensity measurements on the power-network or on other high voltage circuit ...Use a current clamp. That's the only secure way to do it !

author: Smokey
author_rank: Super Contributor
timestamp: April 25, 2015, 08:11:11 pm
content: Why are all the screws in the pictures floating over the table?

author: radioFlash
author_rank: Regular Contributor
timestamp: April 25, 2015, 09:30:24 pm
content: There's a glass panel on top of the table.

author: SL4P
author_rank: Super Contributor
timestamp: April 25, 2015, 09:44:35 pm
content: Quote from: Smokey on April 25, 2015, 08:11:11 pmGlass protecting the tablecloth?

author: Smokey
author_rank: Super Contributor
timestamp: April 25, 2015, 10:18:34 pm
content: Nice! That is a killer effect. I thought maybe you dropped the stuff and had some sort of camera trigger. That or you bashed the table so they all hopped up and snapped the picture. A glass table top make a lot more sense though

author: broderp
author_rank: Regular Contributor
timestamp: April 25, 2015, 11:11:12 pm
content: The pictures look cool...the screws and stuff look like they are floating in the air, like you dropped it and snapped the picture at just the right moment...