I’m sure you guys are hip to this ...

[DarkHorse]

...but this tester is dirt cheap, pretty darn accurate, and super handy ! I got it off eBay for like $20-25 or so. It tests transistors, caps, resistors, Diodes, etc....

A VERY handy companion to a multimeter, and extremely useful !

[willienillie]

How many cats do you have?

[antonis]

pretty darn accurate

Compared with..

[Marcos - Munky]

Yep, it's a nice tool. Cheap, can measure lots of stuff, shows transistors pinout, blinks leds so you can check their colors, some of them measures ge transistors leakage (mine doesn't ).

The only thing to be aware is the battery. It starts to be innacurate with a not so big battery voltage drop. Not a big deal for stompbox buildings, but once I had trouble measuring a very low value resistor (less than 1r). A fresh battery solved the problem.

[MaxPower]

Got a cheap careless version primarily for the pf cap range. Not reliable with jfets though (d and s pinouts often wrong). Haven't tried mosfets yet.

[anotherjim]

Got a cheap careless version primarily for the pf cap range. Not reliable with jfets though (d and s pinouts often wrong). Haven't tried mosfets yet.

You can swap D & S on most JFET's without any ill effect  - still works. So, you can imagine the test box is not going to be able to tell you if they're wrong ways about.

[duckduckgoose]

I got one that I think is based on the same software but it's a black and white screen with a green backlight. clear acrylic case. i think it was only 8 dollars on amazon lol

[Marcos - Munky]

I got one that I think is based on the same software but it's a black and white screen with a green backlight. clear acrylic case. i think it was only 8 dollars on amazon lol

This is the exact one I have.
https://pt.aliexpress.com/item/32810272625.html

Probably there are cheaper ones, I just copied the first link I came across. The keyword to find them is mega328.

[DarkHorse]

pretty darn accurate

Compared with..

Comparing not only to my MM, but also using it to measure known value parts to check accuracy.

[DarkHorse]

How many cats do you have?

Zero.

Two dogs.

[Electron Tornado]

I think I posted this, but here it is again:

pretty darn accurate

Compared with..

I have one of these as well as one of those pictured in the first post. I set up R.G. Keen's method for testing transistor gain on a breadboard and tested a bunch of germanium transistors*, then compared the gains given by both of those testers. The results were very close, with the largest difference being about 6%.

The one in the video is fussy about battery power, while the one in the first post has a rechargeable 5V battery. 



*A couple of Russian GM28 and a bunch of AC176.