Multimeter buy question - Page 1
Forum section: electronics / testgear

author: ecu971
author_rank: Newbie
timestamp: June 30, 2014, 11:20:11 am
content: HiI am little confused over what dmm to buy. I got this "super" china dmm that is not so super, vc97 or something is the name.I want to test electronics like mosfets, caps and stuff(electronic repair mostly). My vc97 cant test my mosfet in my lcdtv im working with right now. Many ppl say fluke. Is true rms something to consider?Will this suit my need? Dont need temp checks and similar.http://www.ebay.co.uk/itm/NEW-Fluke-101-Handheld-and-Easily-Carried-Digital-Multimeter-/161344974090?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&hash=item2590e8ed0a

author: Wytnucls
author_rank: Super Contributor
timestamp: June 30, 2014, 11:29:16 am
content: Watch Alan's video to learn how to test a MOSFET with your VC97.The Fluke 101 is not going to do anything more than your current meter.

author: ecu971
author_rank: Newbie
timestamp: June 30, 2014, 01:22:01 pm
content: I know how to test a mosfet with "his" method. Got an other borrowed dmm that works fine so my vc97 cant do it.Got something similar to this.http://www.aliexpress.com/item/VC97-3-3-4-Auto-range-digital-multimeter-all-function-production/1471304711.html

author: Lightages
author_rank: Unknown
timestamp: June 30, 2014, 02:05:23 pm
content: The VC97 has a 1.5V diode test maximum and therefore is probably not capable of doing this test on many mosfets.Meters that might interest you that will:http://www.ebay.com/itm/Professional-UT71D-Intelligent-Digital-Multimeter-Volt-Amp-Ohm-Capacitance-/161275830720?pt=LH_DefaultDomain_0&hash=item258cc9e1c0http://www.ebay.com/itm/Digitek-DT-2843R-AC-DC-True-RMS-Multimeter-with-Backlight-and-Temperature-/171080136251http://www.ebay.com/itm/Uni-T-UT139C-True-RMS-Digital-Multimeter-with-Temperature-NCV-Backlight-/171213085325http://www.ebay.com/itm/Brymen-BM869-Digital-Multimeter-500-000-count-Dual-Temp-AC-DC-TRMS-PC-Logging-/171272486755http://www.ebay.com/itm/Brymen-BM829-Digital-Multimeter-Dual-Display-AC-DC-TRMS-Dual-Temp-10-000-Count-/201070664254

author: ecu971
author_rank: Newbie
timestamp: June 30, 2014, 03:48:52 pm
content: Thanks a lot, i will check it out!

author: Wytnucls
author_rank: Super Contributor
timestamp: June 30, 2014, 05:03:11 pm
content: Big fail on the VC97. Seems that a 2V open voltage would be the minimum to test most MOSFETs. The Fluke 101 should just manage that. Avoid the Brymen 257 which can barely push out 1.8V.

author: JohnWard
author_rank: Contributor
timestamp: June 30, 2014, 05:56:07 pm
content: Quote from: ecu971 on June 30, 2014, 11:20:11 amNothing wrong with Fluke or plenty of other manufacturers.Is it suitable for you - doubtful, that meter is designed for electrical use, not electronics. It has no current ranges at all.Whether you need true RMS or any other features depends on what you are using it for.

author: ecu971
author_rank: Newbie
timestamp: July 01, 2014, 10:43:41 am
content: Mostly dc, electronic repair, tvs, motherboards, etc. Im thinking of this one, good price.http://www.ebay.com/itm/Uni-T-UT139C-True-RMS-Digital-Multimeter-with-Temperature-NCV-Backlight-/171213085325

author: torr032
author_rank: Regular Contributor
timestamp: July 01, 2014, 10:51:02 am
content: Then better buy ut61e, you have a bargraph and a 22000 count display which often come in handy in electronic.

author: kripton2035
author_rank: Super Contributor
timestamp: July 01, 2014, 12:01:49 pm
content: buy a dmm you want, but also buy a specialized devide to test the transistors (like the $20 one in another thread)and also an esr meter (no dmm does it and it is very useful for repair stuff)