When I was a kid we used to get grab bags from Poly-Paks and Olson Electronics. Mostly floor sweepings, but they were fun to dig through and learn about the parts. My house was only about two blocks from the Knight Kit factory, I spent a lot of time digging in their dumpster. My mother didn't appreciate that.
Wow you must be about the same age as me (78). Growing up it was always tough to choose between Heathkit and Knightkit since I grew up in the Chicago area so Allied & Knight kit had the home town advantage. I'm sure I probably still have some of the Poly-Pals and Olsen stuff hanging around.
I wonder if you're applying the judgement on the ESR right because I see some caps of a brand in your "bad" pile that I have come to trust to compete on quality with the best known brands. ESR is highly dependent, not only on series, but also on capacity and voltage ratings. Applying a blanket 1 Ohm limit is therefore just wrong.
New general purpose 100uF 16v capacitors from Rubycon test as 1.3 ohms ESR, so that limit was way too low. I think the "good" pile was all Low ESR capacitors.
Small value caps do indeed have esr higher than 1ohm, even can be more than 5 ohms and be fine. Tolerance spec on capacity can be 20 % even more. So all you got, is ptobably well within spec.
We had a lot of this in UK back in the 1950s/60s and I used to buy these. It can be fun sorting through the bits but the reality is that it's only a good buy when you can use all the parts. It is much better to buy just what you need for a particular project and leave these "bargains" well alone! Best wishes!
=== It is much better to buy just what you need for a particular project === That does make sense if you're talking about expensive components. However, there's also the convenience factor of "having a bunch of different components on hand". Sometimes, you don't actually know what capacitor or resistor value will work best in your circuit, especially if it's your own new design which is being prototyped. So, a collection of common value resistors, capacitors, diodes, can be a good investment, saving you time and the shipping charges you'd incur if buying "just what you need".
Unless they leak current between plates, they're fine, 2 ohm is nothing. Anyway, obviously these packages intended to be used for art projects or alike, instead of electronic design.
As a buyer and reseller for Chinese made components , I think you were wrong about what you bought... In fact, The Electrolytic caps are all good since the common tolerance for Electrolytic caps is +50/-20% even for European manufacturers...
Glad you took the time and did a 100% test inspection! Was it worth it? Yes, the experience is highly valuable when sharing with your viewers. Note: Buyer beware!
What is that components tester which you were using for checking the capacitors? Where from this tester can be purchased? Please share the details. Thanks.
Perhaps you could test a couple of those failed capacitors with a scope and conduct a >100kHz square wave ESR test to see if they indeed exhibit a high ESR drop in their waveform when switching the square wave.
To be honest I think the tester machine does pretty much that, plus imagine the patience needed to prove that a crap cap is crap indeed, or to prove it's not and save like one cent.
You can not measure caps with that gadget and compare them to the datasheet because the datasheets give capacitance for 100/120Hz and tan d, that is the dissipation factor for the same frequency. Many datasheets give the impedance |Z| for 100 kHz. They do not state the ESR. You probably used one of the random lists.
Similar to you, I purchased a bulk lot of resisters. Each strip of 20 was poorly marked with values and there is a lot of variance between what they should be and what they are. For example, a strip of 20 560k resisters varied between 540 and 565k
I have an experience of buying random bag of resistors and (no electroliic) capacitors on a radio bazaar. It was a really good deal, totally worked for me.
I don't know why you eliminated capacitors more that 15% out. That's within spec for most aluminium electrolytic capacitors. I double-checked at Digi-Key just in case I was in error.
as an electronic component distributor, i'm curious about people prefer buying those items from online shop or distributors? maybe prefer online platform like amazon and aliexpress bcz more convenient？
Shipping fees can be too high for a hobbyist, some distributors require a VAT number otherwise they won't sell to you, Amazon already has your card number (or you can pay using coupons), certain kits have the appeal of a certain variety. Of course when you find out the parts are either factory rejects, or fakes with inferior characteristics the advantages do not look that appealing anymore.
ESR is not the correct criteria to filter out bad capacitors. Small electrolytic capacitors inherently come with large ESR. Get a LCR tweezer and measure the DF at 100Hz and 1Khz. The DF should be less than 0.2 at 100Hz and less than 1.0 at 1Khz.
Some of the "bad" capacitors are not really bad. They are just low quality. Meaning that you sould not use it for timing as such and only for simple power supply cucuits. I ordered brand new ones from Ali and they were just like that.
If you know what you're doing it might be a great deal. Mica, polystyrene, ceramic capacitors are be pretty stable. If you find a handful of those capacitors then yes you got a good deal. Relays are $5 each. For the experimenter it's probably a small gold mine!
I buy relevant components to building guitar pedals and AliExpress are excellent. The electronics kits are better value. Thanks for the video. Great capacitors by the way
I wonder how and why they sell these. If they're rejects they buy from factories then this is a horrible deal, but since most of them work i'm guessing theyre more like things dropped in a production line that weren't sorted back or the ends of pick and place rolls that weren't fused
Ok but you need to then go through them all to check they work or are the value they say they are not worth the time they even try to pass of second hand parts with short leads and solder on them
I did the same at a local electronics fair. Good value for the money since it came from stores that had closed and had to empty their warehouses. But I would not do that with parts out of china where even the 'new' stuff is mostly garbage.
These capacitors aren't useful for anything that's supposed to work for any serious time period. Only for prototypes, testing and experiments. In my experience they often fail after 2-5 years of use. For repairs or making devices quality japanese capacitors should be used. The parts seem cool tho.
I am planning to make a video vith LED projects for beginners later this year. I think you will like it. Until then, if you want to watch basics tutorials, I can recommend the AfroTechMods and GreatScott youtube channels
Cheap fireworks in Chinese new year. I hated those electrical leakage capacitors in O days. I used a wooden clothes clip to fired it up with matches, boom like a canon firing shell. With smoke and a pop sound. Great ! Nowadays capacitors are still used as timing machine in electrical appliances. Cap failed, U don't know how to repair, buy a new one.
i have several boxes of various boareds with random el. 💩 on it. 🤣 sometime i relax by depopulating those boards. but anyway. how can ali even allow such merchandize. it's literally a mystery purchase. 😅
I'd never touch chinese capacitors. Always buy quality capacitors preferably the japanese ones like Panasonic, Nichicon or Nippon Chemicon. They cost more, but it's worth paying the extra.
The reason why you don't like buying from Aliexpress is because you don't know how to buy there, or at least you pretend you don't, so you can make this video. kek
That depends. Sorting them might be quite meditative and relaxing affair. With excitement thrown in, when a rarer useful parts are found. By and by, it's for beginners. Old f@rts already have buckets and buckets of similar stuff.
from your 1 kg stuff all parts have errors , you cant see it with your toy ,trust me , all parts are checked from million doller high speed automation maschines sorry for my bad englisch , 1kg waste
When I was a kid we used to get grab bags from Poly-Paks and Olson Electronics. Mostly floor sweepings, but they were fun to dig through and learn about the parts. My house was only about two blocks from the Knight Kit factory, I spent a lot of time digging in their dumpster. My mother didn't appreciate that.
Wow you must be about the same age as me (78). Growing up it was always tough to choose between Heathkit and Knightkit since I grew up in the Chicago area so Allied & Knight kit had the home town advantage.
I'm sure I probably still have some of the Poly-Pals and Olsen stuff hanging around.
Not to mention the joy of sorting through all those caps, really streamlines everything
Basically these are lootboxes for electronic enthusiasts.
the idea of these is so funny like just random crap in a bag it trully condenses the ali express experience
LOL
Some of us think random crap is a lifestyle
Chinese businessmen really know what they’re doing if they can sell 1Kg of E-waste floor sweepings for $15
😂
I wonder if you're applying the judgement on the ESR right because I see some caps of a brand in your "bad" pile that I have come to trust to compete on quality with the best known brands. ESR is highly dependent, not only on series, but also on capacity and voltage ratings. Applying a blanket 1 Ohm limit is therefore just wrong.
New general purpose 100uF 16v capacitors from Rubycon test as 1.3 ohms ESR, so that limit was way too low. I think the "good" pile was all Low ESR capacitors.
Where did you buy these parts? I want to buy also for myself?😊
Is this available in sakatoon?
@@antoniomayo1973 I bought my capacitors from LCSC, but other reputable suppliers include DigiKey, Mouser, RS Components, and Farnell.
ESR is highly dependent on the manufacturers specifications and suggested application
So like if you wanted to make a toy gun powered by vaporized capacitors then I would say this is an effective thing to buy for it.
😂 1kg of bullets
Nice firework für new year's eve
Small value caps do indeed have esr higher than 1ohm, even can be more than 5 ohms and be fine. Tolerance spec on capacity can be 20 % even more. So all you got, is ptobably well within spec.
We had a lot of this in UK back in the 1950s/60s and I used to buy these. It can be fun sorting through the bits but the reality is that it's only a good buy when you can use all the parts. It is much better to buy just what you need for a particular project and leave these "bargains" well alone! Best wishes!
=== It is much better to buy just what you need for a particular project === That does make sense if you're talking about expensive components. However, there's also the convenience factor of "having a bunch of different components on hand". Sometimes, you don't actually know what capacitor or resistor value will work best in your circuit, especially if it's your own new design which is being prototyped. So, a collection of common value resistors, capacitors, diodes, can be a good investment, saving you time and the shipping charges you'd incur if buying "just what you need".
They are 15china yuan in taobao and they sell USD15 in aliexpress.
Unless they leak current between plates, they're fine, 2 ohm is nothing. Anyway, obviously these packages intended to be used for art projects or alike, instead of electronic design.
As a buyer and reseller for Chinese made components , I think you were wrong about what you bought... In fact, The Electrolytic caps are all good since the common tolerance for Electrolytic caps is +50/-20% even for European manufacturers...
the solar cells and motors seem kind of worth the first bag for some projects, but not much else
Glad you took the time and did a 100% test inspection! Was it worth it? Yes, the experience is highly valuable when sharing with your viewers. Note: Buyer beware!
What is that components tester which you were using for checking the capacitors? Where from this tester can be purchased? Please share the details. Thanks.
I love these goody bags if they were sold for 5 dollars it would be amazing
electolityc capacitors are normally +- 20% ... ???
"I bought them at dumpster prices and only half of them are grade A or better, what a scam..."
Perhaps you could test a couple of those failed capacitors with a scope and conduct a >100kHz square wave ESR test to see if they indeed exhibit a high ESR drop in their waveform when switching the square wave.
To be honest I think the tester machine does pretty much that, plus imagine the patience needed to prove that a crap cap is crap indeed, or to prove it's not and save like one cent.
You can not measure caps with that gadget and compare them to the datasheet because the datasheets give capacitance for 100/120Hz and tan d, that is the dissipation factor for the same frequency. Many datasheets give the impedance |Z| for 100 kHz. They do not state the ESR. You probably used one of the random lists.
Similar to you, I purchased a bulk lot of resisters. Each strip of 20 was poorly marked with values and there is a lot of variance between what they should be and what they are. For example, a strip of 20 560k resisters varied between 540 and 565k
That is well within +-5%
1:12: Are these adapters?
these are probably good for like art projects or crafts
I have an experience of buying random bag of resistors and (no electroliic) capacitors on a radio bazaar. It was a really good deal, totally worked for me.
Thanks for letting me know this Types of offers a available online...... And thanks for sharing your thoughts 🙏
Great analysis. Well done
have you ever thought of putting them for sale? can you provide a link for that ESR tester? as not sure what to get from AliExpress - thank you
I don't know why you eliminated capacitors more that 15% out. That's within spec for most aluminium electrolytic capacitors.
I double-checked at Digi-Key just in case I was in error.
Thanks for sharing ❤
High ESR in low capacitors is OK.
Odd they mostly were focused on the esr. The pile on the right was also out of tolerance. Old i know but a good video.
as an electronic component distributor, i'm curious about people prefer buying those items from online shop or distributors? maybe prefer online platform like amazon and aliexpress bcz more convenient？
Shipping fees can be too high for a hobbyist, some distributors require a VAT number otherwise they won't sell to you, Amazon already has your card number (or you can pay using coupons), certain kits have the appeal of a certain variety.
Of course when you find out the parts are either factory rejects, or fakes with inferior characteristics the advantages do not look that appealing anymore.
Thanks for doing all the legwork
😁
ESR is not the correct criteria to filter out bad capacitors. Small electrolytic capacitors inherently come with large ESR. Get a LCR tweezer and measure the DF at 100Hz and 1Khz. The DF should be less than 0.2 at 100Hz and less than 1.0 at 1Khz.
Some of the "bad" capacitors are not really bad. They are just low quality. Meaning that you sould not use it for timing as such and only for simple power supply cucuits. I ordered brand new ones from Ali and they were just like that.
were thy "new" *cough* or parts ripped out of things and cleaned up?
Good question. All parts look new to me.
A saw a few desoldered legs in there. 1:46 on the extreme right. The purple one.
Если esr больше одного ома это не значит что они совсем негодные.
If you know what you're doing it might be a great deal. Mica, polystyrene, ceramic capacitors are be pretty stable. If you find a handful of those capacitors then yes you got a good deal. Relays are $5 each. For the experimenter it's probably a small gold mine!
Components electronic. Using?
I will keep this in mind next time I have eWaste, or sweep the floor in my lab. I'd even sell it for $ USD 10 per kilo.. :-)
You from Italy?
How i can bought it
I buy relevant components to building guitar pedals and AliExpress are excellent. The electronics kits are better value.
Thanks for the video.
Great capacitors by the way
Thanks. I almost bought them
Interesting, thanks.
the biggest downside to Ali is really the shipping, it takes way too long, it's better now but it's still not great
It's like the idea of a big kit with several values of each passive, but... crap they can't sell basically.
I wonder how and why they sell these. If they're rejects they buy from factories then this is a horrible deal, but since most of them work i'm guessing theyre more like things dropped in a production line that weren't sorted back or the ends of pick and place rolls that weren't fused
They could also be perfectly good high-quality parts that are "surplus", left over after a production build was completed.
Ok but you need to then go through them all to check they work or are the value they say they are not worth the time they even try to pass of second hand parts with short leads and solder on them
This gentlemen spent $15 and a whole day for the messed stuff with unsure quality .... My Gawd! 🙄
they sold you whatever fell on the floor in a recycling facility in the last month for $15 lmao
The answer to this is no. If its not sorted specifically, no. My time is worth so much.
What do you use your time for? Dive deeply into that and question everything.
buying old electrolytics is such a bad idea.
Looks like bits they swept from the floor that the workers dropped.
Back in the day when dinosaurs 🦖 roamed the earth and tubes (valves) ruled electrolytic capacitors had a tolerance of -20% and +80%!
I bought 1kg of components on a flea market for 20 euros, it was a bargain, the total value was more than 100 times that
I did the same at a local electronics fair. Good value for the money since it came from stores that had closed and had to empty their warehouses. But I would not do that with parts out of china where even the 'new' stuff is mostly garbage.
The components in the video are only like 1 dollar on Taobao in China.
it's more of a mystery box experience that's funish i guess? It's definitely not practical
These capacitors aren't useful for anything that's supposed to work for any serious time period. Only for prototypes, testing and experiments. In my experience they often fail after 2-5 years of use. For repairs or making devices quality japanese capacitors should be used. The parts seem cool tho.
good for bench testing not for actual final test
If you find a SN76477 then you have a deal.
I NEED this!!!!!!!!!!!!!!
Can you make a tutorial series
Excuse my bad English
Anything in particular you'd like to know more about?
@@LeftyMaker electronics in general
I am planning to make a video vith LED projects for beginners later this year. I think you will like it. Until then, if you want to watch basics tutorials, I can recommend the AfroTechMods and GreatScott youtube channels
@@LeftyMaker thx
Cheap fireworks in Chinese new year.
I hated those electrical leakage capacitors in O days.
I used a wooden clothes clip to fired it up with matches, boom like a canon firing shell.
With smoke and a pop sound. Great !
Nowadays capacitors are still used as timing machine in electrical appliances.
Cap failed, U don't know how to repair, buy a new one.
i have several boxes of various boareds with random el. 💩 on it. 🤣 sometime i relax by depopulating those boards.
but anyway. how can ali even allow such merchandize. it's literally a mystery purchase. 😅
I'd never touch chinese capacitors. Always buy quality capacitors preferably the japanese ones like Panasonic, Nichicon or Nippon Chemicon. They cost more, but it's worth paying the extra.
thats actually nice, it would take me years to build a spare capacitor box, now it's just a couple dollars at your door next morning
it is a good deal for new electronic hobbists.
Kamera çözünürlüğünüz çok kötü
I bought this shit and thankfully i got rare shit
Electrolytic caps are the only components I won't buy secondhand or NOS.
To me 999999999999999999999x good
Gambling for hobby electronics people.
you get what you pay for lol
We are a global distributor of electronic components since 2002 with our own lab for QA! :D
The value of this pile of junk is 0$
Umm, did you try flipping the capacitors? Maybe half of those are where you put in the polarity incorectly?
The reason why you don't like buying from Aliexpress is because you don't know how to buy there, or at least you pretend you don't, so you can make this video. kek
The time you spent to sort capacitors you would have paid for Japanese capacitors.
:-)
was it worth it? No way.
100's of parts of unknown quality, and just identifying them will take a LOT of time.
That depends. Sorting them might be quite meditative and relaxing affair. With excitement thrown in, when a rarer useful parts are found. By and by, it's for beginners. Old f@rts already have buckets and buckets of similar stuff.
Now it's your countries responsibility to dispose of the e waste, and they lost money in the process not gained, brilliant!
from your 1 kg stuff all parts have errors , you cant see it with your toy ,trust me , all parts are checked from million doller high speed automation maschines sorry for my bad englisch , 1kg waste