LCR-T7 Transistor Tester TFT Diode Triode Capacitance Meter LCR ESR Meter for Measuring Triodes Diodes Resistors Capacitors, Inductors, Thyristors

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If you thinking about this because it might be handy or even fun, get one! For the price, you need one. AITRIP LCR-T7I ordered primary for checking transistors. I am using it for a lot more! The LCR capability is much better than I expected!As regards accuracy it is surprisingly good but hardly a lab or even bench test instrument, but for parts checking and sorting it is more than accurate enough. I find myself reaching for it often. As soon as I start to squint to read the lettering on a cap, or having trouble deciding if the that decade ring on a blue background is red, brown or orange, stick it in the socket, push the button, and I know. I also have a lot of old transistors with markings long gone. This device almost instantly tells me if they are any good and what they are. Of course if I need to verify a precise value or characterize a device, I need something better and I have it, but that requires too much effort when I just want to know what it is or if it's dead.To be fair it is not terribly robust but it is even more useful than I expected. The first one I received was flaky, I am pretty sure it had a bad battery or some kind of always on power drain as it went wonky after few component tests or just a few hours of no use but it worked fine when connected to a charger. The vendor immediately offered to refund my money, but I had already decided it was useful enough that I just exchanged it via Amazon. The second one is fine,I would recommend it to anyone casually or seriously works on or with electronic components. If/when the second one fails I will repair or replace it!Would buy again.

I've tested this with all manner of components, modern and vintage. It does a great job of identifying them and giving the correct pinout for semiconductors. You can watch it test if you hook up an LED -- it will flicker as it determines the polarity and other info. I've tried it with old germanium devices too and it correctly identifies them and gives you the gain.My only complaint would be it's not super accurate with capacitor values, but it's not meant to replace a proper LCR meter.For the price paid, it's a great addition to my basement workshop.

This isn't a professional device but is surprisingly handy for the hobbiest.One thing to note, if it just blinks and blinks when you get it, it's not dead. It's just that the LiPo battery is super flat. Leave to charge for a few minutes and after a bit it will be charged enough to be able to boot up the device.

I can't speak to the accuracy but this device it's a quick and easy way to identify unknown electronic components. I am using it to identify components I am salvaging from old equipment prior to recycling. Quickly identifies various type of transistors. Considering its low price, very well worth having. It did not come with any documentation but the user manual is available online; search for LCR-TC2.

When checking transistors there is no indication if good or bad. I’ve had shorted power transistors show up as good.I’ve also blown up two of these with electrolytic caps. The instructions are absolutely correct on this-discharge first. However the second blew up AFTER I discharged the cap. I simply chose to never test capacitors again.