🔴 A Surprising Result ? - FNIRSI DSO-TC3 ESR Measurement Testing - No.1273

FNIRSI DSO-TC3 ESR Measurement Testing
Tony from the Tony359 channel had an odd result when using his DSO-TC3 to test capacitors, as I had a unit here which I reviewed a while ago I thought I could also test that aspect in more detail, it seems I hadn't done that in the review!
I show comparative testing on some bad capacitors between the FNIRSI DCO-TC3, the DER DE5000 and the Shannon Tweezer ST42, the results are interesting
Tony's Channel: • This motherboard surpr...
I really appreciate the donations and support I get from my Patreon Supporters and TH-cam Members, donations really do help me to make content for the channel and buy broken test gear, this hobby gets expensive !: defs.link/?u=f...
#TheDefpom
#ElectronicsCreators
#FNIRSI
#Electronics
#TestEquipment
#Review
#Defpom
▶ Subscribe: defs.link/?u=f...
Click the Bell Icon to get notifications about my future videos!
Affiliate links: (Bookmark and buy using them)
▶ Aliexpress: defs.link/?u=5...
▶ Kaiweets: defs.link/?u=f...
▶ Amazon Store: www.amazon.com...
▶ Banggood: defs.link/?u=5...
▶ 👕👚🎽☕ Merchandise: teespring.com/...
Donate so I can make more videos for you:
▶ Become a Patreon!: defs.link/?u=f...
▶ Become a TH-cam Member: / @thedefpom
▶ PayPal Donations: defs.link/?u=b...
▶ My Odysee channel: odysee.com/@Th...
▶ My Bitchute channel: www.bitchute.c...
▶ My Utreon channel: utreon.com/c/T...
▶ Test Equipment Repair Videos: • Test Equipment Repair,...
▶ Electronics & Repair Videos: • Electronics & Repairs
▶ Review & Teardown Videos: • Teardown & Reviews
▶ Mailbag / Postbag Videos: • More Mailbag Videos
▶ Electronics Projects Videos: • Electronics Projects
▶ Apple Repair Videos: • Apple Repairs
▶ CB & HAM Radio Videos: • CB & HAM Radio Repair ...
▶ My website: www.TheDefpom....
▶ My Twitter: / thedefpom
▶ My Thingiverse for 3D printed replacement test equipment parts: defs.link/?u=0...
====================
My Electronics Tools (video and purchase links)
====================
Other Equipment
------
Kaiweets KTI-W01 Thermal Camera: defs.link/?u=9... (discount code: Defpom15)
UNI-T UTi260B Thermal Camera: defs.link/?u=f... (discount code: BG45411)
KSGER T12 Soldering Iron: defs.link/?u=6... defs.link/?u=5c...
Quick 861DW: defs.link/?u=1... defs.link/?u=a...
Pro'skit SS-331 Desoldering Station: • 🔴 ProsKit SS-331 Desol...
S-993A: defs.link/?u=0... defs.link/?u=e...
EEVBlog BM235: defs.link/?u=1...
YR1030 Battery ESR: defs.link/?u=c...
Heathkit IT-12 Signal Tracer.
Racal Dana 1992: defs.link/?u=8...
Bird 43: defs.link/?u=4...
Sinadder 3: defs.link/?u=2...
Audio Control SA-3050A RTA: defs.link/?u=a...
Korad KA3305D: defs.link/?u=6...
PDVS2mini: defs.link/?u=8...
Valhalla 2703: defs.link/?u=0...
Feeltech FY6800: defs.link/?u=8... defs.link/?u=34...
Eakins Microscope: defs.link/?u=b... defs.link/?u=2...
Mustool G600: defs.link/?u=b... defs.link/?u=3...
Uni-T UT210E: defs.link/?u=3... defs.link/?u=e...
DER DE-5000: defs.link/?u=0... defs.link/?u=1...
MK-328: defs.link/?u=0... defs.link/?u=7...
MESR-100: defs.link/?u=0... defs.link/?u=0...
ESR Meter: defs.link/?u=0...
HOPI: defs.link/?u=7...
PeakMeter PM6252: defs.link/?u=5...
HS1010: defs.link/?u=1...

[@TheDefpom]

I am talking with FNIRSI at the moment and have shared this video with them, hopefully they can fix this in firmware and issue an update.

[@hjorte.]

Thanks a lot for talking with them. I have this tester and don't really trust the ESR test on capacitors due to the same observation. Say hello to cat from me.

[@pault6533]

Thanks for keeping this information flowing clearly. Extremely valuable for consumers and the manufacturers. Hopefully firmware can fix these problems. Otherwise it’s a door stop.

[@tony359]

Thanks for double checking that! Good to hear it’s another useless tool which will go on a shelf. 🖖

[@AnnaVannieuwenhuyse]

And so goes the cycle of gadget reviews. Thanks for your honesty too 😅

[@pault6533]

Gorgeous case. Tries to do a lot of things and in the process doesn't do well at any of them. Hey Scott, thanks for the in depth demonstration of these types of devices. A little tip for calibrating with hooks, get a smooth gold plated pin, put all three hooks on the pin, press test, and when you need to isolate the probes pull out the pin - releases all three simultaneously without damage.

[@karllangeveld6449]

I own the same fnirsi and DER devices. I came to the same conclusions. The fnirsi is ok for quick testing of small transistors, diodes etc, but I would not trust it to accurately measure caps. It is ok for the money, it can do quite a lot of things, but it does none of them really well. It is battery fed so it has a floating ground, which can be practical sometimes. Thanks!

[@poormanselectronicsbench2021]

Although it is advertised as being able to do an ESR measurement, if you don't worry about doing an apples to apples comparison, and instead, pay attention to the Vloss value it generates from a test, it can still be a useful quick check tool to verify the status of an e-cap. I have gotten the feel for an older TC-1 tester to notice that, a higher Vloss value equates to a capacitor being faulty. The downside is the cap has to be taken out of circuit, as it does not test with the 100KHz frequency that allows for in-circuit ESR testing.

[@pksato]

ESR is not frequency dependent.
But measuring ESR is frequency dependent.
DSO-TC3 testing at unknown frequency.
Other two testing at 100Hz.
DE5000 have option to change testing frequency.
And, these testing just show the measured impedance or doing some maths?

[@TheEmbeddedHobbyist]

time to dive into the firmware to find the issue.
Or take it apart and see if the esr is a function the hardware can do.

[@MiBoxSupik-uk9zs]

It's a software problem, because older DIY tester with 9V battery measuring right ESR values...

[@RensePosthumus]

To compare apples with apples, shouldn't the frequency, voltage from both devices match?

[@NikiBretschneider]

In fact, that tester measures those values utilizing different method. It's much slower than 100Hz used on both RLC meters, it applies DC because it just charges that capacitor to some point, then discharges it using different current and all that values it displays are taken from charge and discharge time, it's completely different to applying a 100Hz signal through the bridge, so it displays different values, esp. when DUT is no longer a properly working capacitor, which is pretty normal, but…well…complex things are complex…especially when it comes to impedance.

[@s_s-g4d]

@@NikiBretschneider yeah this is true. I've just checked the test signal applied by my T7-H component tester (I'm assuming it's pretty much the same as the one shown in the video) with an oscilloscope, and there's no AC signal. it uses a series of DC voltages of opposing polarity, some RC curves can be seen, etc, but no true AC measurement.

[@EHH-FPV]

Bah, i ordered one of these just last week. Hopefully they can fix it in firmware.

[@TheDefpom]

It only seems to be the ESR giving trouble, the capacitance value seems to be working ok.

[@fabiolucca]

What is the frequency used in the fnirsi test? Is it the same as the others?

[@YogeshChoudhary-no7zg]

Hi brother I am your regular subscriber ❤❤😊 I watch your almost all videos.But I have magic keyboard copy that is not working what can I do please reply 😢😢😢

[@guateque1718]

This was my most disappointing purchase. It is crap and can't be trusted.

[@unlokia]

SLOW DOWN, take a deep breath, speak a little slower please ❤ God bless you ☦️

[@ThermalWorld_]

You need to calibrate it first then use it.

[@TheDefpom]

@@ThermalWorld_ I did, I just didn’t show it in this video, all items were calibrated first.

[@ThermalWorld_]

@@TheDefpom that means even a $13 component test do better than that one at this point lol 😄

[@Chris_Grossman]

It's 💩!