Products > Test Equipment
Mastech MS5308 LCR meter with ESR measurement - on discount at the moment
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alm:
Good review! I agree with your decision to limit the length, it's better to do a follow up video for extra content. Is the (loaded) voltage from the AC power supply the same as from the 8 AAs? Based on your results, it seems to me that the current in resistor test mode changes with the power supply voltage (someone screwed up the constant current source?). Try hooking it up to a bench supply and varying the voltage from AC power supply voltage down to 8 almost empty cells (~8 V if they're all in series) and see how this affects the results.
KD0CAC John:
When I noticed the length of the video , I was a little concerned .
But once I started watching , I felt like it could go longer , much like a good movie , its hard to be too long :)
chickenHeadKnob:

--- Quote from: jwrtiger on November 29, 2012, 09:18:37 pm ---Hi Shock,

I haven't done anymore testing of  the problem with the power supply, DCR, RP, and Rs.  I hope to check it out further in the next couple of days and will post my results.  I also would like it to be connected to the mains most of the time.  I actually like that it is big and bulky because my main interest was in a bench LCR meter.

--- End quote ---

Something occurred to me as I watched you plug in the external power - does the unit perhaps require a recalibration after a change in power source? I couldn't tell if you tested for that.
grenert:
Hi, John.
Great, informative video!  For what it's worth, I did a very brief test using my DE-5000, which has the same chipset, and it does not vary resistance measurement with internal or external power source.  It runs on a 9V battery, and the external DC pack (a switcher) is also 9V.  Hope you can sort out your problem.
FrankenPC:
Hi, noob here looking for a LCR/ESR meter.  Question is, why would you opt for the Mastech when you could spend a few bucks more and get the smart tweezers?  Is it because of the large screen readability?  Or is it the higher frequency range? 

These tweezers: http://www.ebay.com/itm/170952376553?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649
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