I'm just beginning my studies in Electronics Engineering Technology and I have an assigment to research digital multimeter. Any experienced electronics engineers out there to help. Thank You!!
2007-10-18 10:15:52 · 4 answers · asked by Supa_Sexy1 2 in Science & Mathematics ➔ Engineering
Here are a few places to get you started on your research:
http://us.fluke.com/usen/products/categorydmm
http://www.home.agilent.com/agilent/product.jspx?nid=-536902435.0.00&lc=eng&cc=US
http://www.keithley.com/products/dmm/#4
I like Fluke meters the best -- I personally own two.
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2007-10-18 10:28:11 · answer #1 · answered by tlbs101 7 · 0⤊ 0⤋
It is difficult to answer unless we know what size capacitor you want to test. If the caps are only pF it is impossible to check with a DMM because they will charge up too quickly Larger caps do take some time to charge up when being supplied with volts from a DMM and you can see the resistance rise as it gets charged and then turn the cap round and watch it discharge I use an oscilloscope ( which I guess you do not have - but you can make a simple one from an old TV -portable, B&W is best) I use the signal out put to one side of the cap and the normal probe to the other if the square wave signal show I know the cam is working OK. Th advice to buy a DMM with Capacitance and inductance was good however,expect to pay a lot more for one than suggested if you are in the U K - even I have not got one ! Test equipment in the USA is VERY cheap compared to the UK
2016-05-23 11:29:12 · answer #2 · answered by ? 3 · 0⤊ 0⤋
A wide variety of digital multimeter's are available in all price ranges. A cheap one from Radio Shack is adequate for the homeowner to check voltages and such. An industrial quality meter is for accurate readings in the QC stage of production. A lab quality meter is tuned for the most accurate readings. The technical specifications of a meter are critical to the job you expect them to do. For serious measuring you want a very high Ohms per volt rating. This assures less circuit loading and gives more accurate readings on microcircuits and electronic tuned circuits. A broad range of settings is not needed if the meter is for a specific task. This improves accuracy and lowers the price. A wide range makes the meter more useful overall and the price/quality will determine the accuracy.
2007-10-18 10:32:21 · answer #3 · answered by ToolManJobber 6 · 0⤊ 0⤋
Google anything you can about Bob Pease and A/D converters. An A/D converter is the heart of any digital meter.
Here's one to start with:
http://www.freelists.org/archives/hsdd/02-2006/msg00000.html
2007-10-18 15:04:30 · answer #4 · answered by Anonymous · 0⤊ 0⤋