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Vichy VC99 Multimeter Review and Teardown

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Kevin.D:
Thats a nice common sense , objective review ,giving only the information nescessary .
Like you say it's very easy these days to make an accurate meter ,  something like this ideal if your only using it on low voltage electronics or as an often needed  second meter  to your expensive high cat rated one .

Rick:

--- Quote from: retiredcaps on October 22, 2012, 07:19:17 pm ---For USA members, this Fluke 77 IV for $35 USD Buy It Now may be a good deal (with the usual ebay caveats) if you don't mind a missing battery door and no probes.

http://www.ebay.com/itm/160907013378

--- End quote ---

Besides that it is quite risky to buy from people who have many negative and neutral comments... even if I were in USA I wouldn't buy from him.

Amarbir[Lynx-India]:

--- Quote from: electronupdate on October 21, 2012, 11:58:00 pm ---This is a  $35 auto-ranging  multimeter.   I have seen it on lots of blogs and online discussion and it seemed like a pretty good value.  It was hard to resist buying at that price...

The meter's measurement functions and specification are good on paper.   I put it through the paces and indeed, it seems to be as advertised.

It's definitely built down to a specific price however. 

It's interesting how you can buy a multimeter anywhere from  $10 to $100 in $10 increments these days, with each increment in $'s buying just a bit more quality.  Good measurement accuracy, however, seems to be common even in these very low cost meters.




--- End quote ---

Sir ,
    can you share that website link of vichy please

electronupdate:
Hi Amarbir,

Their english web site is: http://vicimeter.com/en/index.asp


To the person who asked if the autoranging of the  meter can be speed up: The main controller chip appears to be a  "FS9922-DMM4" from Fortune Semiconductor.  If you google it, a pdf data sheet is readily available.  The only oscillator control appears to be crystal.   In theory that that could be replaced with a higher value, however, this would be overclocking outside of the data sheet so there is no guarantee it work(and the frequency counter, for sure, would now be inaccurate).

GEuser:
Thanks electronupdate , i'll look at it a bit later but i gather it'll have a crystal there that is already at maximum ratings(speed)i hope , did you notice the frequency in the review? but don't fret if you did not as i'll look in mine at a later date ,  yet it will be interesting to have a look anyway of the data sheet of the ic .
cheers....
edited>added> just took a quick look and 4mhz in data-sheet , and wow , alot of features in that small ic imo ...

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