Hi Dave. The last mystery tin box is from a Siemens dual terminal optical fibre system. It's the supervision, alarm monitoring and reporting device. It reports alarms in real time as well as storing past events (there was a limit to the number of events it could hold in memory, but alas that parameter has escaped my memory - no pun intended) The printer port on the front panel connects to a serial printer. We used to use a dot matrix printer as it could print one alarm at a time and simply advance the paper through the printer as required allowing many alarm events to be recorded on a single page of tractor feed paper. Helpful as it provided a permanent record of events which aided fault diagnosis The LT1 and LT2 buttons refer to Line Terminal 1 and Line Terminal 2 hardware equipped to the same subrack. A tech could easily toggle the LCD to display alarms from each Line Terminal independently on the 2 line display using these buttons as well as a facility to scroll through past events. The unit also extended alarms by applying an earth potential via relay contacts to the power and alarms panel in the equipment rack and to the station's generic alarm facility for visual, audible and remote monitoring purposes. The REG buttons refer to optical regenerators along the fibre route between line terminals. You used the buttons to view the alarm events at each regenerator site.
@footrotdog3 жыл бұрын
Yes!!! I remember working on these when I was working for Telstra (Telecom) in the early 90's.
@ranzee3 жыл бұрын
I was going to post that it was specialist comms gear - but you beat me to it! Nice info too!
@td4dotnet3 жыл бұрын
Dave should make a T-Shirt out of his comment though I laughed at "It's full of boards!" :-)
@alanrutlidge47673 жыл бұрын
@@footrotdog Me too. I used to work in Network Construction - Transmission (known as NDC) for Telstra in WA until 1989. I eventually got a package when Telstra closed the training section in 2002.
@romelec3 жыл бұрын
It was probably written in the note he missed: 46:18
@Kevindarrah3 жыл бұрын
wow! trigBoard! That was awesome!
@HOLOGRAPHICpizza3 жыл бұрын
Fellow Ohioan here, I literally built something using an Arduino MKR WiFi a few months ago to do the same thing. It depleted a bank of 6 lantern batteries in just a few months! As soon as I saw your trigBoard on here I ordered one!
@Kevindarrah3 жыл бұрын
@@HOLOGRAPHICpizza cool thanks!
@Damien.D3 жыл бұрын
"I hate cats". "Hong-Kong is not in China". Ho my. This kind of words could start a third world war.
@ArnaudMEURET3 жыл бұрын
Good old Dave comment juice triggers! Works 100% half of the time. 😌
@user-ds2wy2ee9n3 жыл бұрын
@@ArnaudMEURET so, does Dave always deliberately saying that as a joke?
@Wtfinc3 жыл бұрын
To be fair, many cats are horrible. I hate cats myself however have a couple I like allot. Its what happens when u live with too many cats at some point, you hate them. U try living with 20 cats and tell me you still like cats.
@user-ds2wy2ee9n3 жыл бұрын
True. That's horrible
@ArnaudMEURET3 жыл бұрын
@@user-ds2wy2ee9n Well probably not. Most people think cats are assholes anyway. But yes our host leverages all the tricks in the book. Such as the funny faces in thumbnails for example.
@CompuHacker3 жыл бұрын
"Do they still make semis in Mexico?" There's a 10,000 acre reservation for the development of a business/industrial park for semiconductor (aimed at newer nodes) manufacturing on the California U.S./Mexico border, with plans for local power generation, on-site water purification (built), amenities, a hospital, with plans for daily commutes of American and Mexican workers (includes plans for a new border checkpoint). Named "Silicon Border". Seems to have no recent developments of actual industrial facilities or any livable buildings, and may have been by the standards of this channel a giant scam. Enjoy researching that, fellow viewers!
@hernancoronel3 жыл бұрын
Last time I heard they were making walls. LOL!
@charlesdickens67063 жыл бұрын
.....moving the manufacturing of optima batteries into Mexico has not been an improvement. The quality/reliability of the batteries has dropped hugely .
@xbst3 жыл бұрын
46:46 "There is no note" 46:20 *throws note away*
@lpz3sn3 жыл бұрын
Da muß er nacharbeiten...!
@EEVblog3 жыл бұрын
D'oh! Totally didn't see it!
@ZomB19863 жыл бұрын
@@EEVblog So what does it say?
@dumandugu3 жыл бұрын
Thank you for sharing great quality content, I've learned much from your channel and forum. Kind regards from Mexico.
@justin.campbell3 жыл бұрын
welp. Its like 12:25 am where I am and im just sitting here watching an aussie bloke open his mail with an oversized knife...
@mvadu3 жыл бұрын
Rest assured you aren't alone..
@EEVblog3 жыл бұрын
Better than being on Twitter
@redsquirrelftw3 жыл бұрын
Same here! I just saw this in my feed now when I was debating on going to bed. I got off night shift so still in night shift mode... may as well stay up another hour. :P
@HannesSchnaitter3 жыл бұрын
Just what the doctor ordernd.
@dtiydr3 жыл бұрын
Aren't we all..
@p_mouse86763 жыл бұрын
IEEE like most other scientific organizations always give me a VERY bad taste in my mouth. The whole FUNDAMENTAL idea of science is to be objective, transparent and accessible for everyone. So everyone can dispute or discuss any claims that are being made in the field. Putting articles behind a paywall does exactly the opposite and makes science only accessible for those with a big wallet, status or big enough social network.
@MarkMcDaniel3 жыл бұрын
Ooooh senior member. Do you get a 10% discount at the local pancake house?
@ShopperPlug3 жыл бұрын
More like 10% discount at the local electronics house, such as digikey.
@george.b.3 жыл бұрын
Silly Dave, it's not an oscilloscope - it's an oscillosocpe! It's written right there on the box! Totally different beast.
@guffaw17113 жыл бұрын
I know youtr TV background is pretty great when it fools me for a few seconds to believe that you changed your offices and I just haven't heard the news about it. Maybe having just woken up did its part in this trickery as well.
@JWH33 жыл бұрын
It would be nice to see a decent teardown of one of those beefy diodes or SCRs
@PilotPlater3 жыл бұрын
The trigboard is a very cool project I've been following for a while.
@bardenegri213 жыл бұрын
Been following it since the first one, great stuff
@ArnaudMEURET3 жыл бұрын
True, but sadly unaffordable for any scale app.
@sveip3 жыл бұрын
The shelves in Louis' workbench are the legendary IKEA Ivar system shelves. Ivar is a common Nordic first name btw.
@SatprodStudio3 жыл бұрын
Yes, good catch! I confess that my entire house is full of them 😅
@sveip3 жыл бұрын
@@SatprodStudio they're fantastic! =)
@m4dizzle3 жыл бұрын
Definitely loving this new bench of the week style!
@SatprodStudio3 жыл бұрын
Thanks!
@Shawn_White3 жыл бұрын
I was admiring the scopes, 3d printer, and PC setup in the background then noticed it was on a monitor.
@georgemoore53073 жыл бұрын
I'm surprised you didn't recognise your first item the SCR. I have a dud that is about the size of a hockey puck it was rated at 1700v and 600 A. Both sides mounted onto the buss work.
@jma20223 жыл бұрын
Yeah diode with a third signal wire, what could that possibly be?
@dorusan3 жыл бұрын
Oscillosocpe.. on the LCR product case, d'oh!
@testing25173 жыл бұрын
My guess is that the software engineers were having a bit of fun. The "oscilloscope" probably started as a debugging feature and they decided to polish it up, give it a few knobs, and include in the production firmware. I can't imagine there being much supporting hardware specific to the oscilloscope.
@FreezeAU3 жыл бұрын
Yes please for the tweezer shootout, I’m about to buy one!
@goldfingerdash3 жыл бұрын
Good for you on the senior membership. I became a senior member in June of 2020. Now you can run for office!
@stephenwong97233 жыл бұрын
Congrats! Senior Member of IEEE!
@DavidLindes3 жыл бұрын
came here to say that; it's been said, so I'll just second it. :) (re 12:07, for anyone skipping around)
@mrechbreger3 жыл бұрын
12:15 doesn't the IEEE have enough money for a CNC router or are you the first Senior Member and they tried to use it the first time with some furniture wood they've found on the road?
@johncoops68973 жыл бұрын
Not wood, just MDF
@PeterUrbanec3 жыл бұрын
IEEE , ACM, SMPTE, ACS, they're all the same. You keep your membership fees paid up for decades you're good. You skip a year and the love is gone. IMHO there is somewhere between very little and no value in being a member these days when compared to the 90's. What do you think @EEVblog ?
@SatprodStudio3 жыл бұрын
Thanks Dave for the background selection! Thanks also for the good comments! I try to keep it clean and organized because it is how I feel the best to start my day, but it's not always clean as the picture 😅 shelves are IVAR from ikea. Multiple 3d printers are there because they don't have the same specs (nozzles and filament distribution) and I have different usage for them. I often have to design pcbs for really closed space, then I 3d print the space to be sure of the connectors etc. And I use them to prototype boxes and buttons too. I indeed had a deal of a rigol pack when I changed my lab hardware, the spectrum analyser came after though. Have a wonderful day!
@isettech3 жыл бұрын
I have a few of those diodes too, and the companion SCRs. This is from the 1970's and a driver failure resulted in commutation failure, shorted SCRs and blowing some expensive silver element sand filled fuses. We changed the parts as a set for the lead and lag for each of 3 phases. This sure brings back memories. No IGBT fets in those inverters.. They were SCRs and big stud mount ones.
@joseph99153 жыл бұрын
Yay, at last a notification that leads to a video that isn't private or deleted :P :D O_o
@decee11573 жыл бұрын
I actually also recently ordered a DC-6006L Power supply. Looked at it many times and finally pulled out my credit card and ordered it. Curiously enough the idle power is 1.4W, at 57,4W load it draws 60W that means 97,9% efficiency! That is pretty darn impressive! And that is still without calculating the loss in the leads themselve!
@polkijain973 жыл бұрын
Love the lab background today. It lights up your dungeon!
@johncoops68973 жыл бұрын
Looks like somebody who has LOTS of money to buy nice toys, but never actually uses them.
@SatprodStudio3 жыл бұрын
Thanks! And don't worry I use them a lot daily 😉 I just sometime clean the place 😁
@wb5mgr3 жыл бұрын
Congratulations from a fellow Senior Member IEEE USA Section 5
@Wtfinc3 жыл бұрын
Thank you Dave for featuring Kevin's KZfaq where I saw in the screenshot he had a video of how to read from ESP32 and I was on the lookout to learn about the ESP32 since Ive acquired one.
@SeanBZA3 жыл бұрын
Separate cathode sense lead is because of lead inductance and resistance, as you generally trigger those SCR units using a pulse transformer, and the lead inductance of the main lead can slow down the turn on, so you have a separate lead to allow your gate drive to not have a massive step on it as the device turns on. Gate trigger is around 2V at 5A, typical pulse to ensure the slow device turns on very fast, as otherwise they are prone to burning out with poor gate drive, as only part of the junction turns on. Ferroresonant not too common, though I have had a few of them as UPS units, and they are rugged and reliable, though efficiency is really poor, as the power input is almost constant irrespective of load, though they do provide a really decent sine wave output, just with high third harmonic, but excellent isolation. They do tend to be hard on batteries, as they typically use a SCR charger, and they will survive up to 2 cycles mains loss before they switch over, though most are dual conversion, with an always on output stage. 15 2N3773 transistors per half side, and they will blow up very nicely on any fault, blowing the cans off the TO3 packages. Still got a ferroresonant line conditioner, which also serves as a pretty good room heater, as it is a 1kVA unit, so input power is close to that, and the output is totally isolated. You find the capacitor tend to fail, and you need to replace them with the correct part, as they can have up to 1kV across them under certain conditions, and they tend to run at around 600VAC with normal input voltage and output current.
@jaycee19803 жыл бұрын
6:45 Louis has a Big Knob! No... he really does have a Mackie Big Knob mixer :) The Sound-On-Sound review for these is hilarious
@SatprodStudio3 жыл бұрын
Actually having it for years, it has work quite well, but now needs to be opened and fixed, because I loose a channel sometimes 😔 but you know time and envy are not related 😂
3 жыл бұрын
Dave, the signal was bouncing on the scope because the horizontal trigger point is set all the way to the right.
@alexstroud38543 жыл бұрын
Could be the only, and therefore best selling, (active) Amiga magazine!
@jh77sly3 жыл бұрын
Cat person here... I crack cat jokes too because they can be awful jerks. Those that get their nickers in a knot over it can leave. I have no problem with dog jokes either because they also can be bloody lumps too. Keep up the fun and ignore the tossers.
@Wtfinc3 жыл бұрын
the best cat is a dead cat. that said, I have two.
@johnsonlam3 жыл бұрын
Hi Dave, I'm from Hong Kong (Yes, brown tape is the favorite of the logistics ... transportation workers). Hong Kong once is the largest shipping destination, and water is the enemy of the goods, brown tapes work excellent protecting the carton box! Oh, about the letter of the Chinese ShenZhen company, just ignore their name. If they're good enough they probably will have a name like JLCPCB or PCBWay, easier to remember, and they didn't install English input so the apostrophe is in Chinese form (mono space), also no line formatting at all, maybe they should hire a random guy from Hong Kong to fix these "look and feel" problem.
@johncoops68973 жыл бұрын
brown tapes work excellent protecting the carton box? What BULLSHIT. Just shows that you still consider yourselves a chinese state, 3rd world country where labour is cheaper than materials. Which is completely wrong. Just use a plastic bag - that is what they are designed for. Costs less, faster, works better..
@johnsonlam3 жыл бұрын
@@johncoops6897 Anytime Hong Kong is worse than third world countries, and labour is cheap, not the kind of cheap value, it's the spirit is cheap and can lean to anywhere that make money, by selling out their own soul, not too bad if you know brown tape is BULLSHIT, see the BULLSHIT now spread all over the world? Anyone who not tempted to buy from the cheap China? Plastic bag can be removed, torn apart and left behind, think again.
@johncoops68973 жыл бұрын
@@johnsonlam - Hong Kong needs to learn about EFFICIENCY. Brown tape is not efficient, it wastes time and performs poorly. The rest of the world has learnt better ways to waterproof packages. Completely covering a cardboard box in brown tape is the inferior "solution" to a problem that doesn't really even exist.
@johnsonlam3 жыл бұрын
@@johncoops6897 I'm sure the Chinese (now they call themselves Hong Kong people), see the package was mail from Hong Kong, but it's ShenZhen company. I'm quiet sure they'll learn sooner or later, maybe 5 or 10 years.
@travishein3 жыл бұрын
I do really enjoy seeing these random tear downs. I have a sort of nostalia for these old many card plug in board designs. I realize today this can all be probably done a tiny single board with a few high integration pieces. But I still want to design and build something some day that uses these fancy plug in card and chassis and backplane and many discrete parts like this.
@mmemotorsport3 жыл бұрын
DId anyone else notice spelling error on the LCR Reader box? Oscillosocpe :)
@movax20h3 жыл бұрын
Congrats on Senior Member of IEEE.
@chrismorley53933 жыл бұрын
Is the little scope all jittery/wobbly because the trigger is off the screen to the right? IIRC my Rigol 1054Z has problems when the trigger is way off the screen...
@dtiydr3 жыл бұрын
I thought when the heck did he got windows in his lab? Took a second before I realized how. :)
@Wtfinc3 жыл бұрын
I thought he was in his house thru half the video till he put the placard on the shelf lol
@restcure3 жыл бұрын
It looks as if the ends of the plastic bits covering the arms of the LCR tweezer makes contact before the tips do.
@rng88913 жыл бұрын
IEEE Senior Member. Congratulations. I got mine last year. You, me and Grant Imahara! (Yes, I know there are others)
@charlesdickens67063 жыл бұрын
....but for the workshop you show us early I didn't notice fire extinguishers on walls . Smoke alarms would also help .
@SatprodStudio3 жыл бұрын
It's a good point, I have a foam and a gaz extinguishers, and smoke sensor is at the middle of the room (only half is displayed in the picture). I am quite paranoid for that 😅
@landspide3 жыл бұрын
"I squeeze it really hard and it comes on" 😆 Dicky contacts...
@EEVblog3 жыл бұрын
That's what she said.
@lasersbee3 жыл бұрын
0:55 The 3 wire jobbies looks like SCRs...Silicon Controller Rectifiers 13:35... At $335 USD plus shipping it's a bit pricey... A shootout sounds quite interesting.
@jasonk97793 жыл бұрын
Here I am editing videos in Vegas with Dave opening his mail in the background. Brilliant!
@lahmyaj3 жыл бұрын
46:20 - Noooo! There was a note! lol you chucked it on the floor (at least there was something looking like a manual or something lol)
@colinpye14303 жыл бұрын
A cat by any other name is still a sneaky little fur-ball that yaks behind the sofa.
@goddamnmaddog20243 жыл бұрын
@20:14, when you show the tips in close up, on the rear tip, there is something. It looks sike solder beads. If they are not conductive, you would have to apply pressure, until the metal sufaces further behind get contact.
@ColinMcCormack3 жыл бұрын
I love the trigboard. If the power consumption was any lower, it'd be a current *source* :)
@andersthuresson3 жыл бұрын
I would love to get some useful comparison between LCR tweezers. I am interested in buying one.
@octapc3 жыл бұрын
The secret IEEE handshake is only for the top 1%. Lol
@EEVblog3 жыл бұрын
I have to level up to Fellow? :-(
@simontay48513 жыл бұрын
Are there actually any half decent handheld o'scopes that can display their claimed frequency _properly_ . Even at 50Mhz and lower, that thing was jittering/jumping all over the place and the sine wave was not smooth at all. Square wave would be even worse.
@colejohnson663 жыл бұрын
Just use the carrying handle on a regular oscilloscope. Boom! Handheld oscilloscope!
@EvileDik3 жыл бұрын
To be fair, it's good enough for automobile and Arduino work, I made my own awful £18 DSO138 kit, good enuff for PWM. It's very hard to justify/afford the multi-thousand dollar price tag of the big players like keysight for using in dirty environments or for hobby suff.
@DaveRepairs3 жыл бұрын
9:39 No that Amiga Bill, I let him know ur talking about him. We are going to be in the next few issues with a huge article. Seriously, the Amiga scene is live and kicking and its huge right now ! HAHA (I didn't send it to u)... thanks for the laughs
@MaxKoschuh3 жыл бұрын
I love Cats 😍😍😍
@johncoops68973 жыл бұрын
We don't give a fuck. Now piss off, idiot.
@erikdenhouter3 жыл бұрын
@@johncoops6897 That's why I love cats too.
@vhfgamer3 жыл бұрын
@@johncoops6897 Well if this is what this community is like, then I'm gone. -1 subscriber.
@cheeseschrist23033 жыл бұрын
I hate cats - they taste terrible, apart from all of the destruction to native fauna (along with foxes). I love dolphins - they taste just like tuna.
@johncoops68973 жыл бұрын
@@cheeseschrist2303 - Yeah, I like the canned dolphin chunks in olive oil. For my outdoor clothing I much prefer baby seal fur, as it is so much softer and more water resistant than cat's.
@senilyDeluxe3 жыл бұрын
Missed opportunity... (holds up 1N4148) That's not a diode. (2:40) THAT's a diode!
@delinquentdesign3 жыл бұрын
Last device looks like broadcast equipment maybe esa emergency service announcement equipment which prints out instances of test and actual announcement information that is transmitted through said device.
@adeeponionbreath3 жыл бұрын
I don’t understand the utility of a power supply that must be driven by a power supply.
@darer133 жыл бұрын
I think its a "user interface adapter" to a wide variety of power supplies that dont already come with one? Interesting concept if you ask me.
@KB1UIF3 жыл бұрын
Haha, I never thought I would hear Dave talk about a "Big Stud Package" lololololololol I remember showing Diodes and SCR's that size when I was training young apprentices at British Telecom over in England. When semiconductors are that size they make good examples and training props !!
@zman15083 жыл бұрын
There's a Sydney Amiga user group I am a part of its a fun little group of folks around the old computer still
@TheGuruMeditation3 жыл бұрын
Awesome! I know Alpine9000, Invent79, and cTrix are all in OZ. cTrix is in Melbourne. Not sure where there other 2 are. Amiga4Ever -- AmigaBill
@TheGuruMeditation3 жыл бұрын
Oh an of course AmigaCammy in Tasmania
@michael.a.covington3 жыл бұрын
Congratulations on making IEEE Senior Member! I "leveled up" some years ago for doing AI research and don't know a quarter as much as you do about electronics, but, like you, have been into it since age 7 or so (which in my case was a LONG time ago).
@DDB1683 жыл бұрын
An electronic device not made in China ! Oh the humanity !! Go Canada. I'm on board.
@markh52103 жыл бұрын
I suspect the "best selling" active Amiga magazine achieved its status by selling more than zero copies. Never used the Amiga- would probably have been a better choice for the family computer than the Atari ST.
@vidasvv3 жыл бұрын
Yup, those SCR's and diodes are small compared to the ones I got to play with back in 1980 when I started up and serviced the worlds larges (at that time) 1 MW 3 phase 400 Hz UPS. For the 4 MW 60 Hz stuff they used big ass "Hockey Puck" types. The extra red wire was used for connecting to the gate firing control. It was fun having one of them fail ! LOL
@PsiQ3 жыл бұрын
Senior Member ?? Does that mean you get seated closer to toilet and buffet now ? **harr harr harr**
@ernstoud3 жыл бұрын
Why can’t Chinese companies use another font than Times New Roman? Is there a law in China forbidding this?
@mikebarrett26213 жыл бұрын
Given the complexity of their text characters, it probably looks better to their eyes than the 'minimalist' Arial or similar typeface.
@Psi1053 жыл бұрын
Yeah, cats are super common with engineers. I guess we love that they don't give a shit and are pretty low maintenance.
@djbassaus3 жыл бұрын
The cat or the engineer?
@MetalheadAndNerd3 жыл бұрын
Cats are common with psychologically unstable people. Thus their immature reaction to anyone who mentions that he doesn't like cats.
@max_kl3 жыл бұрын
@@MetalheadAndNerd I think that counts as an immature reaction to somebody who mentioned that they do like cats
@MetalheadAndNerd3 жыл бұрын
@@max_kl Yesss!
@ArnaudMEURET3 жыл бұрын
Huh Dave, _you_ are being the Kickstarter for the Amiga Addict magazine ! 🤣
@neilw2O3 жыл бұрын
I notice the USB-PD power supply has go those lovely olive green bulging brand electrolytics. Replaced 2 in other Aldi stuff this week. Give 'em 2 years.
@JoelCHopper3 жыл бұрын
love that shirt! All the old school robots! I'm aging myself by knowing where all of them come from. :-)
@akosbuzogany27523 жыл бұрын
If you use the programmable opamp to select ranges, after a simple two-point calibration Atmel can handle AD conversions surprisingly well!
@BradsGuitarGarage3 жыл бұрын
I reckon those tweezers have lacquer on the probes.
@jamesdk54173 жыл бұрын
Those Prusa i3 printers are something like $1000 delivered to Australia.
@SatprodStudio3 жыл бұрын
Here its 600 delivered without taxes, hence the 3 😅 for the explanation, they are not exactly the same in term of nozzles and filament distribution
@Anonymous-je7qc3 жыл бұрын
3:47 The red wire is actually just cathode connection for gate driving (note that gate voltage is relative to cathode).
@DantalionNl3 жыл бұрын
Prediction: The portable USB-PD supplies use an XLSemi XL4016 Buck convert IC
@Youtronics3 жыл бұрын
21:33 That flat flex connector looks like it's not locked, that could explain the contact problems.
@TheTarkovish3 жыл бұрын
yes please, tweezer showdown!
@eDoc20203 жыл бұрын
A few years ago I hacked a WRT54G router to act as a remote wireless sensor, using the enable pin on the buck converter to shut the unit down and save power. That looked absolutely primitive compared to the Trig Board.
@kevinbroderick37793 жыл бұрын
15:35 IS CONTAMINATED WITH MAPLE SYRUP.
@byronwatkins25653 жыл бұрын
Congratulations, Dave! I think those voltage ratings need multiplied by 10.
@tinygriffy3 жыл бұрын
@ 50:23 .. the 74LS00N would be the perfect designator for a delay circuit ^^ .. like "when will I get my signal ? 74L .. S00N"
@YounesLayachi3 жыл бұрын
Congrats ! Well deserved I didn't know exactly what it means to be a senior member but I think the IEEE is important enough
@johncoops68973 жыл бұрын
Senior means OLD. Ever heard of a "Senior Citizen"?
@YounesLayachi3 жыл бұрын
@@johncoops6897 ever heard that two words put together have a different meaning than either word , especially with context ?
@johncoops68973 жыл бұрын
@@YounesLayachi - ever heard the word "joke" ?
@douglas2lee9292 жыл бұрын
Senior IEEE level is not based on age, it is based on life accomplishment in the field.
@alexandrecouture24623 жыл бұрын
The big diodes are what you can find in 400A Hobart welder
@klightspeed3 жыл бұрын
33:11 it looks like that power supply module is about 95% efficient (dissipating about 3.3W) based on the power source output (64.052V * 0.938A = 60.08W input vs 56.79W output)
@LinuxGalore3 жыл бұрын
For those wondering why many Australians don't like cats, well that is because cats do a horrendous amount of damage to the Australian wildlife. So much so that in many areas of Australia any cat caught outside of the owners property will face massive fines.
@BrendenJohnFilms3 жыл бұрын
Congrats on the IEEE, that is so neat!
@plasmaman95923 жыл бұрын
My cnc plasma cutter with water table came with the ss braided probably the smaller of the 2. My machine is rated 3 phase 300 amps I think. My actual plasma is only 125A though
@MrDoneboy3 жыл бұрын
Summer in Australia? Our asses are freezing down in the heart of Texas!
@healLV3 жыл бұрын
I actually thought that was your real background until you brought up lab of the week
@bartomiej3683 жыл бұрын
Isn't that second wire in scr for measuring current in fact? You measure voltego drop across thick wire and knowing its impedance you could calculate current.
@BogdanSerban3 жыл бұрын
You can actually test short turns in a transformer with an ESR meter. And that power supply looks like a synchronous buck converter using TL594.
@lu3ebw2123 жыл бұрын
As popular wisdom says: If you don't like cats, it is because you have never had one.
@kevincozens68373 жыл бұрын
@15:31 The box says "Oscillosocpe". :) The website of the Canadian LCR meter shows US$ prices. :P
@electronicengineer3 жыл бұрын
Yup, the world is just slipping... Fred
@TheTrashcutter3 жыл бұрын
full bridge rectifier out of the stud power diodes !
@theedspage3 жыл бұрын
Congratulations, Dave!
@mattmatson74273 жыл бұрын
I'm thinking the TV should just be a green screen because I like the idea but the TV is just too small
@EEVblog3 жыл бұрын
People like seeing the shelves as well. Gereen screen would be horrible (think green PCB's among other issues)
@bjtaudio3 жыл бұрын
I have found those mini tweezers multi-meter testers to have reliability issues, they generally are extremely inaccurate when measuring low value inductance.
@tabajaralabs3 жыл бұрын
diodes with an extra wire are scr...
@fieldlab43 жыл бұрын
Triac?
@Digital-Dan3 жыл бұрын
Most such names are easily pronounced by simply saying each of the syllables in order, using the most likely sound of same.
@stheil3 жыл бұрын
Those staggered connectors look weird at first, but admittedly it's an easy and efficient way of "keying" the plug-in boards. I love it! Also what's with the weird angle on that IC visible to the left at ~48:00? Haven't seen that before...