Was hoping you would wind it up to the full 12v

@pear7777

3 жыл бұрын

My thought, the motor is rated 3-12V

@thomasesr

3 жыл бұрын

Missed opportunity

@LiamHindYT

3 жыл бұрын

@@thomasesr Its strange to see people that you recognise from MaTn live streams on other videos :-) Hi

@AppleReviews

3 жыл бұрын

me too :/

@eliotmansfield

3 жыл бұрын

I was like TURN IT UP!!!

Rubber flaps? I barely know 'er!

@thedevilinthecircuit1414

3 жыл бұрын

Most of my dates are like an illicit gambling bar: liquor in the front, poker in the rear!

@zachbruner481

3 жыл бұрын

Rubher flaps?

@fatmanbravo6

3 жыл бұрын

Who have you been talking to?

@fatmanbravo6

3 жыл бұрын

@@zachbruner481 I should have been so lucky.

@fatmanbravo6

3 жыл бұрын

Pinned flaps? I hear alot of girls are doing that these days....

From led bulbs to air pumps, I always seem to come back to your videos even though I search for something completely different. You explain well so thank you!

6:22 I hate to correct you but that was an eccentric shaft. Not concentric.

@frankjackson2439

3 жыл бұрын

Hate to correct you but that was an eccentric comment.

@BobWidlefish

3 жыл бұрын

*@Frank Jackson* I don’t mind correcting you at all: he’s a pedant, not an eccentric. :)

@bdf2718

3 жыл бұрын

So all these years I should have been thinking of Clive as being a bit concentric?

@andricode

3 жыл бұрын

Such an excentric comment

@dollyhadbraces9361

3 жыл бұрын

you guys talk in circles

Why didn't you go up to 12V? I wanted to see bubbles! :)

@garethkemp84

3 жыл бұрын

Hey how

@garethkemp84

3 жыл бұрын

Io

@johnpossum556

3 жыл бұрын

RPMs tend to destroy most rubber pumps. They sell self-priming ones for use on a drill and if you look at the directions you see it says to use like 1200rpm and if you look at the comments you'll see a bunch of people complaining how their pump died so quickly when they run it off a 2200rpm drill. The key to longevity in these things is definitely low rpms. If you want more air it'd be better to use more pumps.

@ozzymandius666

3 жыл бұрын

Is not the resistor 5.0 * 10^1 5% accuracy?

@delcat8168

3 жыл бұрын

@@ozzymandius666 I think the "not" is superfluous. (Mr A pedant of Harlow)

I've had one of these running as the sole air pump on my aquarium since this video came out. I have it plugged into a power bank that is always charging so in the event of a power outage I get about 3 days runtime before the power bank is depleted. I was originally very sceptical of the longevity of the pump, but a year later at 24h/day run time it's still going strong.

I've bought a few of these. Some are sold as "used" and seem to have been recovered from coffee machines where they're used as frothers.

@michaelthibault7930

3 жыл бұрын

@DARK So, link to the video?

@thomasesr

3 жыл бұрын

A espresso machine uses pure vapour from a presure vessel to heat up and froth milk.

@Chrisamic

3 жыл бұрын

@@thomasesr but you can hear a pump running when frothing (domestic units, which is what we're talking about). I've always thought they are just pumping water into a chamber with a hotplate. I think the pumps are probably a bit different to this one, because they are designed for (1) liquid) (2)potentially high temperatures and (3) extremely high pressures. The cheap ones only have one motor that is switched between brew and steam, so the pressure they can work at is several bar.

@smittzero8463

3 жыл бұрын

Huh. I'll keep that in mind next time i see someone throwing out a coffee machine. Might be worth tearing one down if there's a chance that one of these is inside it.

@cctrollz5706

3 жыл бұрын

I believe they are also used in the powder fed coffee machines to blow air threw the powder tanks to keep things flowing.

the Same construcrion of the pump is used in my old "Fischertechnik" pneumatic compressor(it was running for more than 200h in the last years. My one Runs always at 9v (0.8 to 1bar max) and I had to clean the Rubber flaps for 2 times now, becourse it cant get the full pressure if there is dust on them (They cant realy close ) I as i had it open i Use a little Bit oil on the Motorshaft. on the Rubber flaps and the other moving Parts i used a little Bit of Silikonfat. Now i much more silent and the pressure and airflow stays the Same. Also the Powerdraw Got decresed a lot. So i like it 😉

Welcome to 2020, where appliances have resistors specifically to waste energy _when on battery power_

@vylbird8014

3 жыл бұрын

Because the most common means of supplying power now is via an interface that was never designed to supply more than the most trivial amount of power.

@Basement-Science

3 жыл бұрын

@@vylbird8014 Well in this case if you ran it off a PC's USB port, no resistor is needed. It's just those horrible power bank circuits that cant properly figure out whether they should run or not without causing lots of problems.

@beargun42

3 жыл бұрын

Same with lightbulbs, so they don’t glow when the lightswitch is off. Or nightlights that actually use more power when “off”

@resneptacle

3 жыл бұрын

@@vylbird8014 Maybe not in the earliest versions, but later USB revision certainly were. Those power banks are just not designed and sold for low power devices

@user255

3 жыл бұрын

Yeah, really stupid design.

That was a really cool stroboscopic effect! Almost like you had a high speed camera.

Thank you so much. This video answered so many questions I had about this pump. I'm building a micro fog machine for electric RC airplanes and needed a micro air pump that would meet certain specs. This video saved me from having to test a bunch of motor combos. This setup will do exactly what I need.

Shove 12 volts into it. I bet that will pump some air then

@LiLi-or2gm

3 жыл бұрын

Yeah, they really do! I've been playing around with one over the past week. I even hooked it up to an audio amplifier and played music through it (the idea is to make a cheap talk-box). It does reproduce music- not very well but it is audible and recognizable and does work as a cheap talk-box effect!

@yellowwasanimposter520

3 жыл бұрын

@@LiLi-or2gm Cool.

Fishy Fun Fact: It's not the bubbles coming up through the water that adds air, it's the movement in the surface of the water they cause that does it.

@dian2n

2 ай бұрын

this can be verified very easily. To make it so that the bubbles do not shake the surface. Has anyone tried this?

Got ten of these. Not only can you use them in emergencies or when shipping fish, it is very valuable as a standard air pump because it is alot more quite than other air pumps. Air pumps are usually noisy!

@AzulaisQueen743

7 ай бұрын

My Tetra Whisper 60g is practically soundless

Clive I absolutely love how you make yourself laugh with Innuendos. Little rubber flaps is just funny no matter what context but to add in shafts sucking, blowing, silicone covers and pinned flaps is priceless.

@stewartcaldwell5299

3 жыл бұрын

I'm just waiting for a cow joke.

Big Clive! Cheers mate fron Texas! You teach me alot, and I have been a commercial high voltage electrician 30+ yrs, 480/277 3 phase...Now, Im into micro-circuitry beyond PLCs! Thank You!!!

would have liked to see it run at its maximum rated voltage. i think 12 volts it said on the label

@michaelthibault7930

3 жыл бұрын

I would like to see at what factor of the maximum rated voltage the magic smoke gets pumped out. These are data-driven times.

@chrisprobert6

3 жыл бұрын

that is an excellent idea and should be done at the end of every video unless already failed. well done and mr big clive please take these comments on board

My roommate in 1993 had a fish tank. During a multi day power outage we took turns sitting next to the tank blowing air in. This device would have been much appreciated

@BrainiumBasher9001

2 жыл бұрын

all you're doing is blowing more co2 into the tank lol

Works like an RV water pump, just much smaller and pumps air. Thanks for explaining the need for that resistor. Love your channel.

Looks an excellent pump - little to go wrong and a great little motor that even starts at 1V.

Thank you for the idea! I got one of these for my fishing bait bucket. Removed the resistor, attached 4 AAA batteries in a pack with a switch, and am now giving it a longevity test. Way smaller and lighter than the pump I was using that took 2 D cell batteries. I'll report back with success or failure.

@badmonkey0001

3 жыл бұрын

It lasted 5.5 hours before I turned it off and went to bed. The batteries still test as good after. This is an ideal replacement for my old bait pump. Thanks again!

@Bpreppye

2 жыл бұрын

@@badmonkey0001 I am planning to buy one of these, do you recommend i remove the resistor? i am planning to use it with a power bank for keeping bait alive on saltwater...

@badmonkey0001

2 жыл бұрын

@@Bpreppye Definitely remove the resistor. First thing I do.

That is an excentric shaft and no 12 V test?

@FnordOok

3 жыл бұрын

My thoughts exactly, I was hoping for a ramp up to 12V

@iainmason9034

3 жыл бұрын

*eccentric

@deelkar

3 жыл бұрын

@@iainmason9034 You are correct, it is not a plant.

This is exactly what I was searching for. Thank you.

Now this was a good recommendation from KZread. I am about to buy some of these. So I am glad you made this video. Nice to see how it works

I love my pinned flaps with air holes, also the vibrating is a nice option too.

@CrazeUK

3 жыл бұрын

Don't vibrate on your flaps though

@franksmith7271

3 жыл бұрын

@@CrazeUK Lol made that mistake once... Still studder sometimes.

I want to hear BigClive say "Rubber Flaps" more.

That motor is incredible!!

Amazed it actually started up on just over a volt! Wow. Great video.

Everyone wants to see 12V. I myself want 20V

@good-ql6un

3 жыл бұрын

I want 240 lol

@tncorgi92

3 жыл бұрын

240. Let the smoke out.

@Leroys_Stuff

3 жыл бұрын

Start at 3 and go until it welds itself 😂

@Basement-Science

3 жыл бұрын

Let's do a miniature Photonicinduction video lol!

@good-ql6un

3 жыл бұрын

Basement Science yes yes and yes

Hey, that's the electric supercharger for my Kia Rio.

@legoman8960

3 жыл бұрын

lol

That is a neat little pump. Good review.

I know this is an older video (relatively speaking), but just saw this come up. Aquarium Co-Op actually sells a usb air pump. Several uses in the aquarium trade are: low power outdoor pond aeration, low power alternative for running a sponge filter, transporting live fish in a bucket (larger fish for example would be one benefit or as a breeder transporting to a local store to sell), and as mentioned, a backup way to at least keep water flow going.

"3-12V" I'm unfulfilled!

That pump would be perfect for agitating PCB etchant.

@handlesarefeckinstupid

3 жыл бұрын

It's so much easier to use a tiny CNC to machine the PCB now.

@Scrogan

3 жыл бұрын

Colin Newman Only if you have a tiny CNC router/mill. Be cheaper to use a small CNC laser to ablate away a solder resist, which is probably more accurate and could also be used for a solder mask.

@rpavlik1

3 жыл бұрын

That's exactly what I thought. I might go looking for one.

@frogz

3 жыл бұрын

i just set my tiny cnc up to go back and forth a few hundred times, no need of a fancy air pump to agitate the ferric chloride

@HannesMrg

3 жыл бұрын

@@rpavlik1 I have one of that 50€ Neje lasers. It sounds terrible when homing (the axis just smash in the end for a few seconds), but for small surfaces its perfect.

I’m in an electronics of automation class in college and I am learning resistors rn. That resistor is a 5 band resistor. If my colors are correct, that is a 51 Ohm resistor. The first three bands are numbers, the 4th band is a multiplier, and the 5th is for tolerance (black means it has no +/- tolerance.)

Well Clive. I have been looking for one of these to use on my scroll saw to blow the saw dust away. Scroll saw have a bellows pump that run off the arm as the blade runs, but they put out enough air to remove the dust. This one would work perfect. Just need to hook it to the main off/on switch. Thanks for the reminder.

the holes on the back are not intakes. They are breathing wholes, they allow the under-piston space to breathe, so that it doesn't have pressurise the chamber.

I was expecting 12v and some dish soap in the water. What a disappointment.

@CrashM85

3 жыл бұрын

A powered Foamy Whoofler™!

A lot of us in the aquarium hobby use these for brine shrimp hatching, good to know the resister is sucking a lot of power, and hell we all use them plugged into the wall XD

4:41 Definitely almost gave my laptop a good beer based baptism!

Ditto on the 12v, but I would also love to see it with as well as without the silicon wrap to see how affects its ability to move air.

I’ve gone through 3 of these in 6 month. Really quiet but don’t last long. I don’t think the motors are designed for constant running.

@rogerborg

3 жыл бұрын

Did the motors die, or did they stop pumping? I can see that eccentric shaft wallering out pretty quickly.

@miniwarrior7

3 жыл бұрын

I'd like to run at a lower voltage like 4.1v 24/7

@nyny

3 жыл бұрын

I have one running in a small aquarium for almost a year, guess I got lucky!

@Sayid112

3 жыл бұрын

More than a year on first and everything is lasting fine

@vgamesx1

3 жыл бұрын

Did you try cleaning it? It may not have been at the top of the comments when you wrote this but someone else pointed out that it stops working if it gets dust in the rubber flaps.

Thank you

Effective and efficient designers are cool and skilled

In case I want to take my goldfish backpacking.

@Peter_S_

3 жыл бұрын

Also suitable for taking goldfish skydiving.

mmm, this with a vape pen and I could finally have a slow-smoke generator to visualize airflow over heatsinks & such 😳

@mtb0519

3 жыл бұрын

Definitely I use them in rc boat an trains

@progenitor_amborella

3 жыл бұрын

You would want to make sure your vapor is clean though, no nicotine or flavorings. Not sure if VG/PG alone leaves residue, but I would assume it does before going and trying without research first.

@mtb0519

3 жыл бұрын

@@progenitor_amborella wd 40 works well 😂 smells lovely as well

@PeterAbt

3 жыл бұрын

use an ultrasonic mist maker instead of the vape

thanks! i really need to know what inside of those air pump ! great useful video

really enjoyed the format and info there. i wish i knew how to play about with ohms law as good as yourself. You can find out many interesting parameters from using it

No water splashing everywhere at 12v? =(

@gile849

3 жыл бұрын

:(

@cptcrogge

3 жыл бұрын

:(

@r7z859

3 жыл бұрын

:(

@nightshadelenar

3 жыл бұрын

it's MDF for his bench, so it would take up the water really quickly and swell.

@1marcelfilms

3 жыл бұрын

Even moooore vooooolts.

I think it's called a swashplate pump; fairly common in hydraulic systems, though running much higher pressures. Interestingly, some hydraulic motors also use this to take compressed fluid and produce rotary motion from it. Though, the construction is slightly different, rather than an eccentric drive, they use two plates parallel but at an angle to the axis of rotation, and the pistons align the plates with ball and socket joints on the driven (load) end, and fluid intake / outlet split. Particularly handy as you also get a universal joint built into the motor.

@simonhopkins3867

3 жыл бұрын

Cool i had a look at Google images. 👍🏻

@cambridgemart2075

3 жыл бұрын

I think you mean pressurised fluid, compressed fluid is a physical impossibility!

@carneeki

3 жыл бұрын

@@cambridgemart2075 compressed fluid is totally possible, however, compressed liquid is not; so I'll give you partial credit :)

@cambridgemart2075

3 жыл бұрын

@@carneeki But it wouldn't be a hydraulic system if the fluid was gaseous!

@carneeki

3 жыл бұрын

@@cambridgemart2075 that's why I gave you partial credit.

Good video! 👍🏾

These are really useful. Last year most of the fish in my aquarium died as the power tripped out when we were on holiday. I have connected one of these to a solar panel I put by the window in case the same happens. Disconnecting the resistor improves the performance no end.

You could use it to bubble your drink on this nights stream...maybe exchange air by something different :)

@MichaelZP1

3 жыл бұрын

But type of rubber disqualified this device even for 🐟 because black rubber mean lowered quality, no suitable for saturated drinking water

@Basement-Science

3 жыл бұрын

@@MichaelZP1 It's only pumping the air, not water, so not sure it would be much of a problem.

Ooh, hey, an "X" rated Big Clive video! - Steady laddie, you'll be getting censored!

Very good video!!

I'm using the same pumps for our outdoor "water feature" that somehow got some gold fish in it. It's running off solar power battery citcuit ..... that resistor is getting chopped off tomorrow ! I should add that one of them survived for almost 12 months and only the recent -5 degree C managed to kill it :) Thanks Clive :) 3 months later... Just took another one apart and fixed the motor brushes to keep it working until a replacement arrives. Noticed it works at 30mA only when there is no load on it. If you stick the stone in water it rises to 70mA. This is without the resistor. Still a lot better than without chopping it off :)

A continuous Foamy whoofler!

@roderickwhitehead

3 жыл бұрын

This comment needs more likes.

@bigclivedotcom

3 жыл бұрын

Only if fed with combustible gas or oil based whoofler foam liquid.

@Basement-Science

3 жыл бұрын

@@bigclivedotcom There are near-identical pumps being sold with an intake port. So that would be an option I guess.

That's a 3 phase air compressor! I was just taking apart a similar pump used for bait - it takes 2 D batteries. Not having any I was trying to modify it to take AA. To my surprise, the batteries were wired in parallel, only 1.5v total, and the pump pumps as much as yours does with full voltage. The motor is smaller and only has one chamber though. Runs forever on a pair of 1.2v rechargeable AAs, but I didn't measure the current. I've taken several of these apart over the years and never could quite figure out where the air intake is!

@westinthewest

3 жыл бұрын

The problem with 2D batteries is that they're always flat.

@ryanroberts1104

3 жыл бұрын

@@westinthewest That's why I changed them to 2x AA. Works the same with one battery as two, but obviously lasts longer...

@slm60uk

3 жыл бұрын

@@ryanroberts1104 woosh!

@SeanBZA

3 жыл бұрын

@@ryanroberts1104 AA batteries are ultra cheap, not do the D size, even though the regular zinc carbon has the same capacity as the alkaline AA. I bought some battery adaptors so I could use a AA cell in my AVO, as buying a D cell every few years is not great, as I only need one, and it is likely to leak long before it is used up, but AA cells are used all over. Also replaced the 15V battery with a stack of CR1212 cells in a PTFE block , with some brass contacts screwed onto the PTFE to emulate the rectangular 15V battery. Likely to last 20 years in there, and the cells are cheap as well, unlike that AVO battery.

I like it..Lots of uses..

I live on a narrowboat and am off mains electricity when I travel for four months in the summer. I have four fish tanks onboard and I run five of these pumps on power banks. The pumps run 24/7 and so far this summer they have run for over three months without failing. Brilliant little pumps that can easily replace mains powered units and not just be used for fish transportation etc. Added bonus is they are virtually silent.

It occurs to me that, if the current draw is low enough, you could get one of those Dollar Tree (or Poundland, etc... I live in the US, plz don't judge lol) solar pathway lights and replace the LED with one of these. Obviously a little circuit trickery would be necessary to make it run continuously, since the pathway lights generally turn off in daylight... and of course a bigger battery would be in order as well. If you then completely sealed the motor and the mechanical connection from motor to pump, so water absolutely couldn't get into the motor, you'd have a submersible pond pump for an incredibly low cost overall... and with a few bits, here and there, of outdoor rated plastic (or stuff that isn't, such as polypropylene food containers, but covered in something that is, like a cheap tarpaulin or UV-resistant black plastic sheet for the garden, if you can get it in non-perforated form), along with a bit of rock and some cheap plants... hey, water garden on a "the rent is too **** high" (which it always is :-/ ) kinda budget. I may have to do that myself someday. I'm not so great with plants, to say the least (I have stories... ohhh, believe me, I have stories!) but, hey, if they water themselves... ;)

@bansheemania1692

3 жыл бұрын

I love my koi pond. Started in 1993 with a 190gal Now Up to 7,500gal. But Now My Father took it over And they Are His Babies 😂 Good Luck in the Future with A Water garden/pond project..✌️

@PSUQDPICHQIEIWC

3 жыл бұрын

Just add soap, and you can have your very own foaming garden lights!

@kaydog890

3 жыл бұрын

I was thinking similar but for an off grid deep water culture hydro set up.

What is the load with it at the bottom of the aquarium?

Very nice pump.

Hi Clive, I have just pulled exactly the same pump out of an old faulty blood pressure meter (battery leakage damage). The one I pulled from the meter also came “other goodies” including a miniature 6V air solenoid valve and a pressure relief valve.

@FlammableElectronics

Жыл бұрын

I took mine too from a blood pressure machine, mine was a professional

I'd be interested in seeing it at lower voltages with the rubber condom installed. It might reduce the air flow. When you come right down to it, at 1.5V it made plenty of air for a 1 gallon (4 liter) fish tank.

I guess the motor is a typical DC brushed motor, which creates some interesting high voltage spikes as the commutator disconnects, so I wonder if the resistor is there to suppress those voltage spikes. A capacitor would have been easier and more reliable so perhaps not. Either way, I don't think I would risk it putting noise back down the USB 5V line to a PC. A remarkably efficient wee beastie though.

@Basement-Science

3 жыл бұрын

The capacitor that is usually across any USB supply somewhere would probably be enough to get rid of any danger. It's also only a few mA, so even worst-case the energy those high voltage spikes have wouldnt be massive. But yes, a (10uF 50V ceramic) capacitor across the motor would be a good idea.

I'm glad you looked at these I've been trying to come up with a economical air pump for my fish tanks the comments are inspiring AC pump etc

@MD-scorpion

3 жыл бұрын

Aquarium co-op sells these pumps but I think they may be upgraded for durability

Just found your channel - as an electronic numpty I envy your knowledge - but excited by the knowledge I will gain by watching your channel - reverse engineering at its best ! Thank you !

Interesting, looks like a miniature car ac compressor.

@charleshines6155

3 жыл бұрын

It is similar in a way

@piwex69

3 жыл бұрын

I think car compressors mostly use "G" compressor type -> kzread.info/dash/bejne/e52NyK-Ao9bKaaw.html

@NurdRage777

3 жыл бұрын

Looks similar indeed. kzread.info/dash/bejne/hayl28h7aJbag9I.html

5-1-0 is 51ohms

@cvr007

3 жыл бұрын

Gold band is the tolerance... Am I correct?

@drydoc3077

3 жыл бұрын

@@cvr007 yes

I think one of your piezo air pump videos was one of the very first ones I ever saw, so this brings back good memories. If you could somehow isolate the motor from the pump section I wonder how well this would work to pump water. Motor would probably draw a lot more current.

oh such a handy video for my main hobby.Thanks clive

By the way: The pump current consumption will be reliant on the backpressure so deeper water means more current.

@Basement-Science

3 жыл бұрын

Yep, he blocked the output with his finger at some point and the current more than doubled. Still not bad.

I would assume the resistor is either to increase the voltage dropped across the cable and thus slow down the motor or a poorly conceived back EMF protection device. If so, not sure why they didn’t just use a diode, maybe they got a good deal on 2W resistors that day in the Shenzhen? Also not that it matters with the symmetrical design but looks to me like they're running it in reverse, red dot on the motor isn't connected to the red wire?

@cambridgemart2075

3 жыл бұрын

@WizardTim, no it's there to keep 'intelligent' power banks turned on.

I actually wanna buy this, this video make me more confident

3:20 Notice the current draw increase when blocking the output.

I've got one of these air pumps disassembled on my desk right now. It's a really clever design! If you put the end of the hose in your mouth, you can make talk-box sounds! :) Also, the motor windings measure 3.6 Ω.

@lwilton

3 жыл бұрын

That's DC resistance, but 0.036A at 5V indicates it has an actual running impedance more like 140 ohms.

@miniwarrior7

3 жыл бұрын

Running under load of 12-14" of water will change load current quite a bit

WAT NO 12v?!

What a lovely thing.

Nice little backup pump. and it would be perfect for fishing!

With that resistor removed it looks like a great candidate for running off a small solar cell with a couple of NiHM... Clive, cross-breed it with an LED garden lamp!

@SeanBZA

3 жыл бұрын

Would provide air at night, just right because then the plants have stopped making oxygen as well, so the fish would be happy. Might need one of the bigger solar cells and a bigger battery (or 3 in parallel) to run all night, but will work, and you can run a LED in parallel as well to get a little light out as well.

@stewartcaldwell5299

3 жыл бұрын

Would that even be ethical?

1:45 circumcision on screen man you gotta censor that kind of thing these days

@johndododoe1411

3 жыл бұрын

That's not circumcision, it's normal uncircumcised movement at that timestamp.

Cool ! I have a few of those. Had yet to take mine apart

I'm sold!

When the pump was running open, those looked like the pistons in a tiny Wenkel Rotary engines like the one in the Mazda RX cars!

@goldpipe2003

3 жыл бұрын

For fuck sakes man. Wankel engines have rotors.

@evaluateanalysis7974

3 жыл бұрын

A bus company did build an engine like this, but didn't put it into production. It was very compact for its power. Wankel engines have a figure-of-eight shaped chamber with a triangular (with curved sides) wobbling rotor. Trochoids!

Are you sure that component was a resistor? I've seen several inductors in that package, size and colouring. Saying that not sure what use an inductor across a dc motor would be as the obvious choice for noise suppression would be a capacitor.

@simontay4851

3 жыл бұрын

Yes, it was definitely a resistor. He measured it at 51 ohms.

@bigclivedotcom

3 жыл бұрын

Definitely a resistor. And purely to increase the load to hold on smart power banks.

Awesome tear down, i have this running my nano shallow tank, connected to a 27000 mah powerbank with pass through charging.

Now you know how a car air conditioner pump works. It’s just a smaller version. Great video 👏

I beat Clive to working out the pump resistor value! The gold multiplier on the resistor is 0.1 so 510 x 0.1 = 51 Ohms. Do I get a gold star?

@dahahaka

3 жыл бұрын

No gold star for you But a gold ring!

@dogwalker666

3 жыл бұрын

I was surprised Clive did not know that gold ÷10 silver ÷100

@cambridgemart2075

3 жыл бұрын

As did I, quite surprised he hadn't encountered gold and silver multiplier bands.

@FarleyHillBilly

3 жыл бұрын

Green brown black is 5,1, no multiplier ie 51 ohms, gold band is 5% tolerance

@MattThompsonOnGoogle

3 жыл бұрын

@@FarleyHillBilly YOU win.

I have an almost identical pump that's ment for water instead of air. The only difference is that it has a second intake nozzle on the front, as a result it has a slightly different valve setup but apart from that it's the same (though it's a lot more powerful and A LOT louder when pumping air). I'll check if it also has those passages that this one uses for the intake.

Never mind the pump, you just sold me a Banggood USB power meter!

There are a lot of impressive things in modern consumer electronics. But one of the things that consistently surprises me the most is what can be done by a simple DC motor like this.

I've been using these on my aquarium for some time. Great little air pumps that are so quiet compared to others. Good to know about the resistor!

@nsasimallik

2 жыл бұрын

How long does the DC motor last if I run it continues for my fish tank. It is sound less and less power consuming and a small pump

@steviekehoe

2 жыл бұрын

@@nsasimallik I've been using one for about a year and half now. It still runs fine and quiet.

@nsasimallik

2 жыл бұрын

Curious where did you get it from

@steviekehoe

2 жыл бұрын

@@nsasimallik I not sure as I've a few now from different places either Amazon or eBay.

@nsasimallik

2 жыл бұрын

@@steviekehoe I am from India and I buy it off Amazon. They are expensive here and only last few months. Tickling sound keeps coming from the air pump after a few days and the motor freezes after few months

That's an impressive little air pump indeed! :-)

That's quite the powerful little pump

I use one of these for a little hydroponics setup in a noodle pot. I grow a chilli plant, it's small but nearly 2 years old. I can't wait to see inside. I almost forgot to add I run it from a solar panel when I can.

Thay are amazing little pumps when fishing

I have a couple of usb power backups that don't do mains passthrough, though they do allow solar passthrough. This would be perfect for those because as soon as the mains went down it would power the pump. Since they are also solar you could set it in the window and it would give you a little more time.

Impressive