The most useful tool ever for electronics repairs - (PWJ212)
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- เผยแพร่เมื่อ 29 ก.ย. 2023
- The Octopus tester (or VI curve tracer) is a very simple but extremely useful device for repairs of analog circuits. It comes in many varieties... as an add-on to your oscillocope, with a built-in CRT, with LCD displays or selfmade with a few components.
It is so easy to use that we call it "Tubelitester" (Swiss German: Idiot tester). It's so simple that everyone can use it...
I’m not going to touch the phrase “Play with Junk”.
SUCH
Love that desoldering Iron .. which I have never seen before .. Very cool tool indeed ..
OMG! Amazing watching this. Like back to basics and really well explained. I love it when people EXPLAIN EACH STEP AND WHY. I find many videos leave this out _ suppose to protect their art. Thanks buddy! Subscribed.
The Value in this video ☝️ is priceless.
Very elegant in its simplicity. A dedicated digital curve tracer is more accurate but I apreciate the ingenuity of making something so useful from only a transformer, couple of resistors and an osciloscope.
That reverse mounted transistor is a weird choice. But so is mounting the power switch
Beautiful work. Such skill & intelligence. Perfect lab you have too. What a plessure to see this. Thankyou
I’ve used curve tracing most of my days, using a Hameg HZ65 external add on for scopes. However, it could potentially destroy (pun intended!) digital circuits. I then bought an ABI System 8 BFL and AICT module that can curve trace dozens of pins at the same time and even store the traces for comparison later. Really powerful power off diagnostic technique!
Very neat, this shows that you don't need a super expensive Tektronix curve tracer. I have not seen the Huntrons before, they look awesome. I like your test load.
We used this type circuit at NASA and WSMR starting in 1970 onward, to repair TTL logic.
Thank you very much sir. This is the first tool I’m building to go with my BK Precision 2120B.
Excellent video, really interesting and well narrated. I’ve always fancied a VI curve tracer & will certainly be lookin to build the version you’ve shown. Thank you & God bless.
Thank you for this, it's another thing to learn more about. 😀
Really neat tool!
I built the simple add on for my scope to do the same thing with junctions, as used Huntrons are priced more than your scope, if you can find one. But the home made one is simply two selectible AC voltage levels and 60 Hz. A fixed frequency is very limiting when you want to test stuff like inductors or capacitors with it. So I may devise a way to connect a function generator to same sort of test circuit so I can clearly analyze different capacitors and coils with the most appropriate frequency range. With diodes I can screen them for knee voltage and reverse leakage if I have a pile of diodes that are untested and cull the duds. OR match diodes.
Very nice. Thank you for sharing your work with us.
Wow, such an interesting video. Thank you very much! And really cool devices you built and use :)
Amazing. I saw the Tracker demonstrated by a salesman at a company I was with in about 1978 or 79 I think. I was very impressed and it was too expensive. I have been curious about them ever since.
Beautiful work. fantastic.