The guy who designed the multi component tester is a real hero. Nice for him to share that. Nice from Tony too to share his knowledge

Quite ironic that FNIRSI went to the length of lasering off the IC markings for a device no one will want to replicate!

I have one of those cheap component testers like yours.
It is absolutely the best eight bucks I ever spent. A magnificent device.

I had bought this meter from an estate sale for pennies and was noticing that it was giving off readings as well. I'm glad these two videos came up on your channels Tony.

When the best part of the tool is its case :D

I have the same yellow component tester since 2017. I wanted to have as you said, something to identify a component as good/bad and if good, how good it is (ESR, hfe, etc). After using it for many years, I get to trust it .
Last year, for my birthday, I got another component tester, TC1. The main differences are the color display, the plastic case and the rechargeable battery. As functionality, the TC1 seems to give me nore details about transistors, but its measurements are in par with the old one, maybe some 5-10% difference. However, now I can not swear that a resistor is 220 or 226 Ohm.
What I say is that you should trust the one that give you the most consistent values when test a component; I see that your DSO-TC3 gives different values at each testing, that hints to a error in firmware or in the schematic or the comonents they used.

Thanks, saved me the money for a bad product (Finirsi)

I have 2 of those kind of component testers. They work ok for semiconductors, but for caps, resistors and inductors, I trust my dedicated LCR meters way more. If I want more detailed swept frequency measurements of LCR’s, I use my Analog Discovery with its impedance-measurement attachment. When I worked in a development lab, there I ahd access to very high-ended LCR-bridges, that are unaffordable to a normal mortal on retirement, but the Analog discovery comes close, except if you want a DC bias. Those cheap component testers are great for simple semiconductor tests, but for more detailed tests, curve tracers are the way to go. With all that being said, wish those component testers were available when I started in electronics in the 1970’s.

Just discovered both of your channels and i am enjoying your content. You do a great job with both the video production and the explanation of your process.

Thanks Tony, I use the 100Hz frequency as I find it results in a clearer result between good and bad caps, higher frequencies result in a narrower spread in ESR between good and bad caps, making it less obvious what their condition is like.

Thanks. Good info I can use.

Fnirsi random number generator. Might be useful for picking your lottery numbers. 😅

Very confusing...but it needed to be said. Thank you. I would have never considered any of this. Must See TV is back, baby! Cheers

Nice Thinking. Informative.

Thank you for you time and information.  Jerry Fox

to the ESR of the Panasonic Co the contact resistance (you can see at "calibrating try" on the old one) is added - as you soldered the 33Ohms.

I have an separate esr meter and ive watched it with osc. Can confirm it can test at 10khz and even 100khz. Other bonus is that it has leads and in most cases desoldering isn't needed for caps, it doesn't trigger any semiconductors

Awesome.

excellent

On the lcr-t4 device we see a platform for testing the necessary SMD elements in Sot-23, TO-252 and other cases. This completes the comparison of the necessary device with the toy from finirsi. Someone may object that this platform can be made independently, because the manufacturer of the toy did not understand why it is needed and did not even include it in the kit. I will say that I have been using the lcr-t4 device for many years, I use new custom firmware that is freely available.