Scrap Marathon Variable Speed Drives 

A choke is constructed the same way than a transformer, copper windings around a ferromagnetic core.

I watched this on my phone & my t.v. IDK why but this stuff fascinates me & I'm a chick, a 65 year old one at that. I never got into computers, except on learning how to use them but I use to read books on them. How they are put together, the different parts, the different languages, programming, code, etc. I took computer graphics in college, I was in my late 30's. I took classes on how to use them just for normal use & also for computer graphics. I loved it! At first it felt like I was learning a new language, I was lost! But going to computer lab & just plain reading the books & practice I started picking it up pretty quickly. It also relaxes me watching you take things apart & listening to your banter. Last night I watched a 5 hour video of yours trying to get your garage straightened out before you went on holiday! That's how sick I am! LOL 😂🤔 yeah 🤣

Glad the hot sauce arrived without damage and very quickly. I found a bottler not far from me and we "cooked" up a private label relationship. Lot's of fun and something a little different. Hope you enjoy.

A DC choke is an inductor that blocks higher frequencies while passing DC and lower frequency AC.

In electronics, a choke is an inductor used to block higher-frequency while passing direct current (DC) and lower-frequencies of alternating current (AC) in an electrical circuit. ... The name comes from blocking-"choking"-high frequencies while passing low frequencies. Nice Stripping Session - all that Copper - Alu and Steel - You sounded very Happy !!!! Stay Safe and Greetings from us in Australia - we love it !!!!

Wow, its interesting to see parts made in Czech Republic all the way in Australia. Greetings from the Czech Republic :)

Two hours plus - this is going to take more than one cup of coffee 😂☕

The gel blocks are power transistors(the logic board controls them so they take power from the capacitors and from it they create the sine waves going to the electric motor with different frequencies bellow 50hz thus generating the variable electric motor speed).

Ben the sauce is Shark Scrappers very own recipe which he now has professionally bottled 👍I can't do anything hotter than a korma myself lol but I'm sure you'll like it as I hear it has a bit of a kick😁

Chokes are an economical means of filtering and controlling the DC bus voltage and current in a variable speed drive /inverter They help reduce AC input line current harmonic distortion while absorbing DC bus voltage spike's

Thanks for sharing Ben, I love your videos

Amazing. Love it

Cheers for posting Ben making my time with a beer and scrap feel like it's flying by

You come up with the most uncommon electrical devices. Thanks a lot for demonstrating the disassembly and the generous information.

Ben, now I'd like to watch you put that second one back together! LOL 🤔😂 Or any of them. 🤔 😁 Years ago my brother in law took something apart on his car & he couldn't figure out how to get it back together. LOL He was pretty young still & hadn't worked on cars that much like my husband always did. My husband started working on minibikes & go carts when he was a kid. He worked his way up to motorcycles & car/trucks etc. He could fix anything. One time we got stuck out in the middle of nowhere one time. No gas stations, cars or people anywhere to be seen. I watched that man get the car running with a stick & some other stuff & we slowly made our way to someplace where he could fix it properly. Probably Auto Zone or Pep Boys, someplace like that, so he could buy the proper part he needed to fix it. I was in disbelief! I called him McGyver after that & joked with him that he could fix anything with a stick & a rubber band. LOL 😂 IDK what he did because I couldn't see exactly what he was doing from inside the car. Whatever he did was amazing to me.

Good stuff man!!!

dc choke In electronics, a is an inductor used to block higher-frequency while passing direct current () and lower-frequencies of alternating current (AC) in an electrical circuit. ... Its low electrical resistance passes both AC and with little power loss, but its reactance limits the amount of AC passed.

Nice copper Solids in there buddy! The extruded is gonna break the back lol. Shark, Johnny great stickers! I wished ya melted the tin copper! Coffee was actually exciting this morning Ben! Stay healthy!

A choke is inherently an inductor. There is indeed a coil like a transformer, but it is just a large inductor.

jeezz that burnt out one was well blasted! 😳 the high voltage ratings on the caps are due to using 3 phase mains (hence the 3 power blocks, 1 per phase) most residential places just use 1 phase

You find the coolest stuff

45:15 that chicken :) helping in scrapping

I’d say the Justice League movie was the biggest DC choke I’ve seen.

in electronics a choke is an inductor used to block higher frequency while passing direct current

Heyo, BigStack D sent me here and I'm glad I did. I'm probably your newest sub. Haha! Good stuff! I'm enjoying what you've made. 🍻

A dc choke is basically a coil ...those caps are measured in micro Farrads uf ...good to see your scraping so much stuff ...I use to work at an ewaste facility here in Tasmania but because of freight cost across the ditch to Melbourne it's gone belly up now .all ewaste gets shredded now ....divu ever get damaged macbook air s

This was a cool video very interesting to watch

😂😂 freaking 13kg alum heat sink! Good one

This is great content

Special tool that does miracles.

good blog ben keep them coming gary from crewe England

Good job

Didn´t expect you ever saying Czech republic :D Greetings from heart of Europe :)

hope u keep all the bolts, and any nuts, always handy for other things

here in Virginia its a nice cool breezy autumn day...definitely sweater weather

FYI l have become a VSD addict thanks to you mate

Those are something I fix and refurbish rather than scrap. You can get several hundred bucks a piece if you fix them up. Plus the big IGBT bricks in them are rather fun for DIY projects. 😜

chokes are employed in various electronic filters to separate signals of different frequencies, blocking or decoupling higher frequencies. In combination with one or more capacitors they make tuned choke circuits for radios and receivers. These are low-pass bandwidth filters since they weed out high frequencies and pass lower ones through. bigger the volt/amps bigger the windings and size.

Very interesting it's like a giant jigsaw puzzle I keep thinking you should pull that gold bar back gold looking bar love your chickens I add to your your videos I love your videos

They are a DC line choke to stop high spikes of AC current from damaging the electrical unit

nice board, square things are bridge rectifiers, ac volt in to dc volts, loads of caps to store dc volts, nice...

Whenever I run across those tinned copper flat pieces. One side is usually rubber like the other paper. I show a scrape mark on each piece and take it as number two copper.

Something to watch with my Sunday pancakes.

I wish there were 90F 850V capacitors this size :)

I think that was the first time I remember that you said "Keep Scrapping" but you forgot to say "Have Fun". Lol

Some of those bigger bolts look like they might be intended to conduct electricity. Could they be tinned copper?

Now that's a heat sink

Have you tried one of those extractor bits? I think you should give one a try

love it boxy things lol

In electronics, a is an inductor used to block higher-frequency while passing direct current () and lower-frequencies of alternating current (AC) in an electrical circuit. ... Its low electrical resistance passes both AC and with little power loss, but its reactance limits the amount of AC passed.

Ben, at 1:10:41, that symbol that looks like a lower case cursive "u" means micro (10 to -6), so that was 90 micro-farads.

Wow that pickup is really paying off big time Ben. Just a hint, put a couple drops of Sharks Spicy Hot Sauce on the chooks tail feathers for better egg production and maybe some spicy eggs too. One never knows! 👍👍 Really enjoyed and looking forward to your next Scrap-A-Thon.

Can I ask why you would not smelt tin plated copper. With the much lower melting point of tin is it that difficult to separate?

What do you do with all the screws, nuts, bolts, washers and stand offs?

I wished I lived in Melbourne and was able to stop by to sell you some boards and talk for a few hours!! Have a Great Day My Friend!!!

looks like a 3 phz unit, 4 inc netural. those brown things are bus bar tansformers 3 of them, might have feed a meter on each bus.

Love ur chicken🤣🤣

I would try a heat gun/torch on the insulated copper plates, maybe if you get it warm itll peel off

Consider Keeping that heat sync to sort documents?

You could use the heat sink as a boot scraper!

were in australia mate. of course there will be alotta dust. i dusted out my laptop last week and i have to do it again because i live near the super pit here in kalgoorlie. its f***king insane how much dust that hole produces.

Variable speed drive power AC and DC motors to run at a set speed. The most expensive part is the SCR. Many of these drives use 3 phase electric power.

These Infineon power double Schottky diodes are worth some money if they are OK.

Why choke coil Cannot be used in DC? The choke is used only in alternating circuit. because for direct currents, The inductive reactance , of the coil is zero. only the resistance of the coil remains effective which is too almost zero.

Those brown things in the first scrap could be semiconductors (not sure, look up the number). Might be worth big bucks. Could be $100 ea (guessing on price).

Ben, I suggest you check the large nuts and bolts aren't plated brass.

1:15:48 wonder if that gel is to prevent the silver from oxidizing

buzz bar terminals, I'm thinking could be high voltage fuse, ya ya maybe, what say you?

do any of the people you get these items form watch your show to see exactly what it is you're doing with all of this?

you don't seem to do the melting of copper or ali any more and i know what you are going to say you will say i haven't got the time maybe you should take a bit of time out from the scrapping and do some melting i miss it.

the round transformer on the next to the last unit is a choke cut the handle off one of your special tool and chuck it in the drill

If only i could have purchased one of the smaller units i would have happily

👍nice amount of aluminium be interesting to know the weight of them all when done👍

An electrical choke blocks high frequency AC and passes low frequency DC current

More videos please uk still in lockdown. Out in December the 2 wep wep

The choke is built like a transformer it's full of copper. I think those resistor blocks are actually diode blocks? Definitely check to see if they have part numbers if any of those are diodes they're worth money.

Can u do another wire chopping please

a choke is 1 or 2 or even 3 winding of copper wire or copper band, iron core, i wud think big thick copper windings, some times there incassed in tar type stuff, to stop vabrations with in, it has something to do with interferance on the circute, cut it open, we wanna see lol.

looks like the problem was under the caps, u can test a cap with a test meter that has uF setting.

1:26:00 woow its come ;) awsome thanks ;) i alwsays watch you videos ;) great video ;)

Hey, Ben! Wee you able to sell any of the parts to your electronics friends from the previous scrap of the variable speed drives? Just interested if they are worth anything like people say.

brown things? solid state relay maybe?

They put that together to stay together

Hey bud, you call them buzz bars, us yanks call them bus bars! Ha!ha!

that heat sink would be great on top of a log burner

Hey my friend next time instead of worrying about getting the shock of your life get out your multimeter and check it and make sure they have leaked down! You do have a multimeter right? I hope so working with electronics. And if not get a cheap one and done now no worries! Also is they have been out of use for a while they will naturally leak off. Nice video thx

Choke is just like a transformer with copper windings.

The shark said the sauce is HOT.

Igbt driver expensive to replace brown rectangle

ok ben 5'100 volts on thos compastors charge them up and you will light up

you might wanna be careful with high volt caps, there is a possible danger if the caps are charged, always short the cap teminals before u get stuck in, a dc charge of 300v dc is heart stopping power,

you know when they put scrap on a lable its defo knackered

the coating could be powder coating. if it is heating it up should soften it

How would someone contact you about buying some stuff you find

Some parts on this VFDs can be sold by a good money ... but they need proper testing .. you need to locate a buyer for this kind of parts, who will eventually test and sell them without going into much trouble.

Solid state relays

Just looked up what a DC Choke is lol! Big capacitor that buffers the AC voltage spikes by converting it to DC & then back again preventing and back flow of power and a smooth steady flow once it’s converted back to AC....cool part!

DC Choke = copper coil. Sell new = up to $400 US

👊🏻🇦🇺🍻🍻🍻😁

The 3rd one has been screwed to last