LCR meter - MTester T7 - Transistor tester review
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- Опубликовано: 30 июл 2019
- This is a LCR meter review. In this component tester review I am showing how the
(Multi Function Tester) M-tester T7 is a more evolved prototype than the already known T4. Over the past 4 years these component testers evolved into good bench tools every technical person should have around. Since I wanted to buy myself a T7, I took the necessary time to review it and to make this video so more people out there could see how it's behaving and to take better decisions when needing to acquire this model. The video describes its good parts as well as its limitations.
The new T7 has the following features:
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Hi, thanks for this video! Also your 3d printed black case is really nice. Do you share the STL file?
It is not my design. I think I printed a remix of this file:
www.thingiverse.com/thing:2484675/remixes
@@FunElectronicsToday Cool 👍 Thank's
@@FunElectronicsTodayHi, do you know if the meter can test IGBT's with damping diode from collector to emitter?
@@treadmillrepair754 I would suspect that it does. I mean, most of the IGBTs have that inner diode and they claim in the datasheet that this device is able to recognize IGBTs. The logic implies that this tester can identify them. Unfortunately I don't have any IGBTs with me at the moment and I cannot check.
@@FunElectronicsToday Hi, I bought ond yesterday.
I use the Peak Atlas DCA75, I have 2 units, one fail some days ago and I looking for something cheaper.
I use it gor test IGBT's modules.
If not work I will buy a new Peak Atlas again.
Best Regards.
Thank you for a great review on the T7. Just ordered one of these. Your video is very helpful in understanding the multi tester.
Thanks! Just ordered one for my Marantz 2225 project!
I was looking into getting one of these, so thanks for the video!
Nicely done. Thanks
Does anyone know at which Frequency is Inductance tested with this unit? thank you so much
Very good review. Thank you, think I will look for something a bit better.
Anyone know where these things originated from? Have all these many ones you see on retailer sites all come from the invention or release of an IC?
hello. I purchased the LCR-T4 LCD tester and it worked great for a short while. then started giving crazy information 🤪
So here goes the purchase of the LCR-TC2 Transistor Tester High-precision Upgraded Version V2.3E 😎 thanks.
I love this thing. I'm guessing the strip of three connected pins that comes with this thing is for self-testing (and maybe it does calibration at the same time) when pushed into 1, 2, and 3.
Yes, or you can take the pins apart from the metallic strip and just use them to build yourself some clip leaded wires to help you test larger components.
@@FunElectronicsToday Well, if I had the correct crimp tool :-) Otherwise, I will just tin the ends of some wire with solder :-)
what is the lowest RDS-on it can test from a mosfet ?
Measure discrepancy for the low RDS (sub 100mOhms) is most likely heavily influenced by the contact resistance of the plug/header connection. Just a guess.
I was wondering about this too, but luckily most capacitors have ESR in the ohm range. So values under 100 mOhms are not so important.
I just bought one .. and I tried 3 different inductors, but they are all recognized as resistors :( Is it broken?
Good video! Thank you,
Can it measure igbt of higher gate voltage
With older models, when they having problem to identify ex transistors, i use to swap them around so the pinout is connected in reverse or some other order in the testers socket, and most of the time that helped the tester to correctly identify the right component every time.. This feels like a halfbaked bug in my opinion but i dont know the real reason for why this works almost every time the tester is confused...
I am looking to buy one. Confused between TC1 and T7. Someone please help. 😢
Nice video. How to show the IR decoder? I have a similar model but it only shows a blinking dot on the display without the decoded info.
Maybe you use a weird remote that uses a very new transmission protocol, or something. It would be interesting to take it and decode it using a real oscilloscope and see what it does.
@@FunElectronicsToday Yeah, at the end that was the conclusion. The M-tester shows the codes for other popular brands but not for the remote I initially tested which is a strange brand. Thanks for pointing that out!
Thanks for the video. I'm looking at this: TC-T7-H High Precision Transistor Tester ESR Diode Triode Capacitance MOS/PNP/NPN LCR MOSFET TFT LCD Screen Tester Multimeter T7. Do you know what the "H" is for? Do you have it - if yes, can you compare them?
Sory for the late reply. I don't know what the H stands for in the other ones. I saw online shops which are selling the H ones with the non H ones at the same price under the same label. So I personally think there is no difference. If anybody has other thoughts or info, please reply to this message so we know.
@@FunElectronicsToday Thank you for your reply. I think it is a faster version sold under TC-T7 High Prec. Tester. Happy holidays to you and the people who are subscribed here or watch your videos!
I have the pcb only but it measures mosfet capacitance not well, it is double the normal value. if does not igbt and darlingtons.
Can you post a link with what you have? Maybe we can help. Maybe you have the T4 or even previous versions.
hello, can this tester check electrolytic capacitors over 100μf?
Yes. According to the user manual (which I posted somewhere in this comments list) it can measure between 25pF-100mF.
Thanks! Subscribed!
hello funelectronicstoday
LCR meter - MTester T7 vs TC1. which is the newest version and which is the better version for bangs of bucks??
thanks in advance
Did you find out the difference?
@@martinstockbridge3449 T7 is better
Mosfet rds measured at 200milli ohm. .so how so you ensure the issue is on the LCR tester, rather than a fake mosfet?
I don't know. Ask the manufacturer. In the video I used a new(ish) mosfet that I just took out of the box. So technically it should have had the proper RDSon.
Well the issue is, fake mosfet is commonly sold in my country (Indonesia) that some sellers need to add title like "original mosfet" to convince people to buy it, the reason why I'd like to buy this LCR tool. Both assumed issues (inaccurate LCR or fake mosfet) rooted from single source: made in china products. I think i'lll still buy the LCR and do manual compare for the result with my digital multimeter (which is, china's made too..lol)
I understand now. Well, please post some updates with your findings when you do so.
Can we test a ZENER DIODE
A diferença entre 3 versões T7 / TC1: Tela colorida, suas funções são iguais! T7 é um pouco mais rápido! A tela do tc é um pouco maior eles são alimentados por baterias elem1. Além da resistência configurada, capacitância, indu, diodos, transistores mos, tiristo, também pode medir medidores de tensão adicionais, decodificação por infravermelho (limitado ao formato hitachi) T7H: É uma versão atualizada do T7, versão atualizada/mais rápida
Can it test 4 pin bridge diode rectifier?
Good question. Well, it only has 3 testing leads. This means that you cannot connect all 4 pins of the rectifier bridge at once. But you can connect it twice in sets of 3 terminals and make 2 different tests in order to verify all of the diodes inside. For instance, you can connect the - ~ + pins to 123, test, and then connect the other ~ pin in the - ~ + configuration to 123 and test. The screen should show 1 --->|--- 2 --->|--- 3 in both cases and display the forward voltage of each diode.
T7 Very Good Sir..
This tester needs for short and open circuit calibration before doing the test.
LEDs have a backward avalanche voltage around 16V
ty to u
Can this test components in circuit?
I don't think so.
Mesr100 NoT Good Sir..
You say that you accept the fact that it can't identify the [part correctly but that's OK? How much did they pay you?
Does it check IGBT?
Yes, it does. I had several cases when this tester couldn't identify them properly and instead it was mistaking them for MOSFETS. Moreover, of course, IGBTs are very vast. They come in different internal structures. I expect that maybe beyond some certain sizes or parameters it will not be able to tell them appart anymore.
@@FunElectronicsToday Thanks. Mine LCRT7 just arrived today and i just test two IGBTs now their numbers are RJP63K2 and 30F132 both TO-220P, the 1st one tested ok by the LCR meter showing all parameters and the symbol but 2nd one is just showing capacitor and its value connected to two terminal that shows in the LCR meter, what do u think?
I think mostly all IGBTs have the inbuilt reverse protection diode installed between emitter and colector. And the T7 tester shoud detect at least that diode and the Gate capacitance. If I would test an IGBT and find that it behaves like a capacity between two of the pins (G to E) and I don't see anything with the third pin, I would say the IGBT is bad.
@@FunElectronicsToday ok, i hope this IGBT is bad. Thanks a lot chief
@@FunElectronicsToday Hi hello! one more thing chief, when i test this IGBT using DMMeter on diode setting, im not sure if my testing is correct, i charge/touch the gate momentarily and then positive probe on collector and negative on emitter, and shows low resistance and touching the gate and collector the same time, reading back to infinity, is this correct chief?
Please, don't add music!
I will try to add less music in the future videos. Thank you for your honest suggestion.
it is crap protection.it brakes if it is a smallest charge in a cap and it is broken and has to swap a componet and a smd diode. same as tc 1-.The best and solid tester with fuction gen etc is transistor tester esr02 pro.real good tetser.Just swap pluss and minus at power jack input if you want it to be positive in the middle pin as most devices have
Thanks for sharing this here.
the real one is dca 75 pro
does it test darlintons?,my old atmel 328 one would report a tip122 as max hfe of 40!
OBSERVATION >> when you plugged in the HIGHER CURRENT MOSFET..it gave you readings you were concerned about...BUT I DIDNT SEE YOU CLIP IT IN PLACE as you DID the rest before and after it ))...(that may have been the reason why )) ive been looking for REVIEWS on the best cheap HOBBYist tester...and this part scares me into not buying one )
It was making very good contact. The MOSFET was having thicker leads and I literally had to force it in. I didn't want to turn the leverage and clip it in place. I was afraid I was going to bend the contacts inside the socket if I do so.
@@FunElectronicsToday ahh well that makes sense!! thank you!
T7 Good or not ?
Like I say in the video. It has good parts and downsides all together. It is better than T4 in my opinion but given the fact that it’s only 20$ it cannot compete with other fancier and more expensive tools on the market. It can be used by all sorts of technicians and engineers from beginner to advanced level but I don’t expect this tool to be used in industrial design.
@@FunElectronicsToday thank you sir🙏
And What name you esr,,??
ESR stands for Equivalent Series Resistance.
multi tester t7 not test power igbt and mosfet.
multi function tester T7H thinks it's a resistor ( bt134 triac)
hi sir,,me order MESR100 Too
Feel free to post a review about it here when you have time. Tell us about it.
I can send the photo of the cards to an email.
Jak musisz to chociaż po polsku słownik
I just received mine today. Needless to say your demo and opinion was very helpful. BTW that data sheet is here: www.circuitspecialists.com/content/430516/csi-tc1.pdf Thanks!