LCState

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@denisconnolly5064 5 күн бұрын

This was a great piece of equipment. I was working in the 1980's when TTL logic was dominant, and this tool was one of the best ways to detect faulty IC's. That was because TTL logic most often fails with a parasitic leak to ground developing between an IC pin and ground, usually the input pins would fail this way. It was a very fast method of fault diagnosis too, you could connect one pin of the Tracker to ground and simply wipe the other pin on the IC's pins, one after another. As soon as you saw something unusual, a strange looking curve (most of them were right angle diode types) you could stop and investigate.

@gamersonlydotvip5337 2 ай бұрын

Thanks for doing a video about this component

@kwgm8578 2 ай бұрын

That circuit is so very noisy. Coupling caps are a good idea, a quick fix. The design engineer would want to know where the noise was coming from and reduce it. I hope that you follow-up with this, however, as a student there was never time on the academic schedule for design iteration. The exercise was left to the student and he or she neither had the time nor the foresight to know how much time a working engineer spends finding and fixing little problems like this. Perhaps it's the problem solving that builds confidence and keeps life interesting in these years of "learning the hard way?" Someday soon design software will use deep learning to find these design problems and offer a superior alternatives. Then young engineers will have to find new ways to add value and keep learning. Engineering builds our world. It is the most difficult profession with the greatest impact in society -- if the bean counters let us do it right. 🧙🏼‍♂️

@andutei 4 ай бұрын

What a wacky setup😂. A car alternator is a synchronous machine and requires vector control. U/f is not stable, when you load the generator, the motor might stall and trip your inverter.

@Superdonko 4 ай бұрын

What do you use the output for?

@Mosfet510 4 ай бұрын

😎👍

@manoranjanroy323 5 ай бұрын

Ytcfibbbebsjj😇😇😇😇😇😇😇😇😇😇

@electronicphilia1687 6 ай бұрын

Amazing video sir

@ravishanker7370 6 ай бұрын

Hi, Can this be made to work with 240V ac mains voltage?

@kalmadolang3583 7 ай бұрын

I wish to have one of this🙏🙏🙏

@matthewoneall8179 8 ай бұрын

The INA126 seems to have a cut in requirement before it begins to increase the output signal. Mine reads 0.645V with no weight on the cell. As I slowly add pressure it holds 0.645V until reaching a force threshold and then the voltage slowly climbs as anticipated. I have a different style load cell reader and it does not do this. It will read a force increase as soon as its applied. Why does the instrumentation amplifier have this cut in requirement? Changing out the resistor for a higher gain reduces the cut in, but then the output becomes saturated too soon.

@catharperfect7036 9 ай бұрын

Can you put it up on PCBWay?

@lcstate_eet7381 4 ай бұрын

The board layout file is here: www.ibiblio.org/kuphaldt/socratic/model/apps/LED_oscope_v2c.pcb (using the open-source program "PCB") The schematic is shown in PDF here: www.ibiblio.org/kuphaldt/socratic/model/apps/LED_oscope_v2_schematic.pdf Note: these do not show the student's waveform-generating circuits built on the board's "prototyping" areas, only the bare board with the LED array and vertical/horizontal driver circuits

@jesusaguilar5708 9 ай бұрын

grate eXplanation Sir

@dequadim 9 ай бұрын

How does SCADA sounds if received with an analogue receiver?

@dr.crazysdallekstudio8585 10 ай бұрын

This is an in circuit tester correct?

@ReginaldoReginaldoMendes Жыл бұрын

O amigo eu sou um escrito no teu canal e esse projeto de osiloscopio de Leds ficou top Eu já tentei fazer igual mais não consegui você passaria o esquema elétrico desse?

@ponymoore6140 Жыл бұрын

I used to be a Technical Support Engineering on the Huntron, among other test devices :)

@Chevroletcelebrity 26 күн бұрын

uh, ok…..good for you. 🤷‍♀️

@ThriftyToolShed Жыл бұрын

Analog Signature Analysis is super helpful. Great explanation.

@petwillcox3934 Жыл бұрын

Promo-SM

@You_Know_Who_I_Mean Жыл бұрын

Have you ever seen a video where the refresh rate of a camera matches the spin speed for one blade of a helicopter to move to where the blade in front of it was when spinning (bad explanation) either way it’s sick and refresh rate is an amazing thing to mess with

@Serkizzy Жыл бұрын

I always loved the strobe effect

@shoneyhulsey6124 Жыл бұрын

My dream test rig

@justinruth9729 2 жыл бұрын

Nice

@gonzagaribotti9852 2 жыл бұрын

Excellent!.. I have it all clear now

@ARBB1 2 жыл бұрын

Great demonstration

@patty1991 2 жыл бұрын

LM and 4017 ????

@tourdhorizon97 2 жыл бұрын

no theory, this is what should be taught

@wanpanman5492 2 жыл бұрын

clear and concise thanks bro

@saivindhya9304 2 жыл бұрын

What are the resistor values you are using for instrumentation amplifier and can I know the gain as well?

@lcstate_eet7381 2 жыл бұрын

This student used an INA126 which is a self-contained instrumentation amplifier (laser-trimmed internal resistors!) and lets the user control gain through a single external resistor labeled Rg, in this case Rg = 500 Ohms.

@narayanbandodker5482 2 жыл бұрын

Very nice, but why was it made with LDR if its so inconsistent anyway?

@lcstate_eet7381 2 жыл бұрын

We needed a means of controlling the crane through a glass window pane, and this was the method we chose. Other methods would have required the use of some hand-held device such as a remote-control unit or magnet, and the purpose of this was for random visitors to be able to control the crane from the hallway outside our classroom.

@narayanbandodker5482 2 жыл бұрын

@@lcstate_eet7381 Oh that's pretty cool. Magnetic or capacitive touch would probably be overkill for this yeah, so LDR might be the cheapest approach for this. What if you add a small white LED facing the LDR above it, so that it gets kind of constant light till blocked with finger, that might improve things I think

@timhofstetter5654 2 жыл бұрын

That's far too complicated a sweep section. It could have been done much more simply.

@lcstate_eet7381 2 жыл бұрын

Indeed, the simplest way would have been to sequence the columns of LEDs digitally using a decoder or shift register. However, the main LED board was designed to use analog driving signals in order to mimic the operation of a legacy CRT display. That way we can do things like Lissajous figures driven by two analog AC signals.

@timhofstetter5654 2 жыл бұрын

@@lcstate_eet7381 I still hold to my statement that your sweep generation could have been done far more simply. One 8-pin IC, two resistors (one being a potentiometer), one fixed capacitor and one switchable array of capacitors for various sweep frequencies. OK, probably a small series of trimpots to accurize / calibrate it. Maybe throw in a CMOS opamp buffer if it acts like it needs one. All analog, as they should be. Nothing digital (digital doesn't belong in an oscilloscope and nearly never even belongs in a multimeter). B&K Precision did that in a commercial oscilloscope, and it worked remarkably well. I had one for a long, long time.

@lcstate_eet7381 2 жыл бұрын

@@timhofstetter5654 Agreed! There are definitely simpler ways to generate an analog sweep signal, and your proposal works fairly well. A student in a previous course tried something similar using the sawtooth waveform from an astable 555 timer circuit as the sweep and found that the non-linear ramp profile created a noticeable "compression" of the waveform toward the right-hand side of the display. Regulating charging current through the 555's capacitor fixed that problem and gave a nice, linear ramp. One detail I didn't mention for this project is that it was done in a course focused on microcontroller applications, so it's more or less a gratuitous use of a microcontroller to generate a linear ramp analog waveform using an R-2R ladder network.

@timhofstetter5654 2 жыл бұрын

That would be W. Forrest Mims to you. 8) Why did you use discrete LEDs instead of integrated LED arrays? Just so your array would fill the real estate you laid out for your drivers to make your board tidy? It could have been about 40% of this surface area. BTW... an ever-so-simple 555 timer can be used for the horizontal sweep. The charge on its timing capacitor is easily linear enough for a purpose like this, and you have all sorts of control over its sweep frequency, especially if you use a CMOS version of the timer.

@lcstate_eet7381 2 жыл бұрын

The lack of a standardized LED array was one reason for using individual LEDs. The main board itself is something I call a "half-project" where students assemble the components on the pre-etched PCB and then they add their own vertical and horizontal driving sections. As such, I wanted a "motherboard" design that would not have to be re-done every time my favorite LED array became unavailable. Another reason for individual LEDs is simply to give students LOTS of soldering practice!!

@timhofstetter5654 2 жыл бұрын

@@lcstate_eet7381 I'll certainly grant the lots of soldering practice! 8) ...and desoldering, when three of the LEDs get installed backwards... 8) That's hair-raising in the middle of an array, where it's so difficult to tell which pin you're heating up. I'd almost be tempted to suggest wire-wrap. Oh, but wait - they could test each row of LEDs as they solder them down, couldn't they? That'd help a lot.

@lazaroramirezmorales7311 2 жыл бұрын

Me gustaría que compartieras el diagrama. Es muy buen proyecto. Gracias. Saludos desde Puebla, Puebla México.

@spaceghost8327 2 жыл бұрын

Just started my 3rd year as a computer engineering major, can’t wait to start diving into stuff like this!

@jackson4861 2 жыл бұрын

Fantastic video, extremely comprehensive. Lots of videos on the bird meter, but nobody shows the in-depth data on the different slugs, and reading the meters different scales. Thank you for taking the time.

@memyselfandi6422 2 жыл бұрын

Is the Huntron Tracker 2000 an actual professional piece of test equipment, because it looks like a childs toy with that tiny screen.

@onkarprasad4450 2 жыл бұрын

Mai aap se jur jau tab karishma ho jaay 💜

@raghuarmani8341 2 жыл бұрын

Can you check on board? And can you check ICs transistors

@rfdave3980 2 жыл бұрын

Good work. Well explained. Thanks

@treadmillrepair754 2 жыл бұрын

In this video you can't see the real power of Huntron tracker. Is an amazing tool for testing boards.

@circuitblog01 2 жыл бұрын

Nice I built a LED oscilloscope based on the lm 3914 from 13 years ago, Back then i use smd led in order to make it it was 20 horizontal × 30 vertical That gave me a 600 dot . with two signal inputs and a trigger circuit. It served me very well with maintenance until I replaced it with an oscilloscope with a tube screen any way thanks for posting