Hacking a magic pink insect-sucking 220V death ball.
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- Опубліковано 5 вер 2024
- It seemed so simple. A nice safe insect catcher that lured naughty insects in with its tantalising blue light and sucked them into a trap. But then it revealed its dark side and a really dubious bit of design too.
So after a thorough hacking it now draws half the power, runs much brighter with no flicker, but is still a bit of a deathtrap.
This just leaves the question... Was the flicker intentional? To stimulate insects to move towards it? Although it was REALLY dim. And were the resistors for heat? Again I doubt it, I think it was just bad design, which is a shame given the amount of work that has gone into making it.
"It exposes a live circuit board at 240 v. Awesome! That gets the Clive seal of approval. Perfect for small children's bedrooms."
That made me laugh for way too long.
"And it's just going to have to be the finger test. Eh, oh yeah, it's dead."
You seriously have me rolling here. You remind me so much of my dad. He's an electrician.
+kjpmi Considering Mr. Clive is an electrician as well...
Rax Ixor that was my point, yes...
The best line so far
ElectroBOOM Style
That fan is only going to suck in the weak, sick, and dying bugs. Improving the overall breed.
so what you;re saying is, is that i need to build a robot that can decide whether or not it is a healthy bug, and only trap the healthy bugs, while letting the unhealthy ones go. then strap that onto my 220v deathball for maximum results??
i think he was talking about the fan its not that powerful
Depp Yes I know.
ok i was just wondering and even then a robot fly killing death trap would be great
*****
that fan did not sound like it was spinning very fast to me.
1:02 "You get this sort of secondary basket for lifting the insects out." 1:28 "It's got this secondary tray. I don't know why they've got a secondary tray."
I was thinking the same XD
came to post the same thing lol
This is one of the problems with playing with electrickery, it tends to fry the little grey cells.
Think he was referring to the fact that you can just dump the bowl. The tray is just redundant 👍
Was thinking the same but he made no contradiction
"Mains voltage, pink plastic, oriental device."
Ah yes, the good old MVPPOD returns.
Mandrake Fernflower PMD sounds more scientific pink mains device
+Eric Meeson That sounds more dubious than the reality is
+Eric Meeson they never did find the ones in Iraq, did they? ;)
What is MVPPOD?
Maybe this is the revenge of the bugs, who have historicaly been electrified by men and now want to kill some humans with electricity too.
+muh1h1 no need fot this big killer go my bug killer by me a cat
no idea what on about
+muh1h1 i.kinja-img.com/gawker-media/image/upload/s--mWfUK_m1--/dirjwlfjugw3bsidu4pl.jpg
Clive, maybe one day you could investigate why Dyson vacuum batteries fail so often. Of the dozen or so I have dissected, none of the 18650 cells had failed. The problem has to be related to the current limiting circuitry. Most likely due to the "power boost" feature that Dyson recommends only using when needed. What I found in every case so far is the owner leaves it run in power boost all the time because it's the only way it really works well. Just a suggestion. Love your videos.
I think the reason you don't usually see paralleled LEDS is because they have a negative temperature coefficient. The hotter they get the more current they draw. So, when you have a bunch in parallel if there is any mismatch one will begin to get warmer, draw more current, get warmer, etc etc until it blows up. Then on to the next one until they're all dead and gone.
Though that would be pretty entertaining.
I have some harbor freight flashlights that work like that...
Oh you know China'll steal the design shortly and save that extra 10th of a cent on the passives you've removed. Pretty impressive modification though my good man! Never cease to be impressed with your videos.
+Lord Skitch It's Chinese. Can't steal from themselves, can they? Unless it's Ikea. Then, the Chinese don't want anything to do with it.
+Kevin Zabbo That was their design rebuilt to actually function BETTER by Sir Clivington, but they won't give two shits about it working better, they'll just care that there's a tenth of a cent to be saved, and retool everything to match his re-working of it.
Yeah, that's Chinese stuff for ya.
+Kevin Zabbo
This is what you get for all the neo-liberal, trickledown economics that the rich shits manipulated the world into sucking up. A whole lot of shit made of plastic and the flow on consequences.
Neoliberals (a term invented by a disgruntled conservative) didn't start trickle-down economics, though rich shits did. They're actually called "conservative," because a liberal knows right well that money trickles uphill and the only people that make money in a trickle-down economy are the fat cats on top.
Pay a man $15 an hour and you'll get it back within a week: liberal. Pay a man $10... steal his pension, and give it to the CEO as a bonus for being greedy: conservative.
I only partially understand what's going on, but this is fascinating.
MoriyaMug I think that's about 60-70% of us here
Hello
Honestly that's me in every video of his
Very few people actually know much about high voltages,you just pray that it's gonna work like in the simulation lol
It's been five years since Clive got his motorscooter runnin', head on down the highway! Lookin' for adventure, and thirtypoop our cake.
The secondary tray is to allow airflow out of the device, to prevent a high pressure area inside the basket that would simply push insects out and make the fan useless.
We need more hacks like this. I like when you modify stuff after you have explained what was at fault.
yeh especially after removing half the components lmao
A masterful demonstration from a man who knows what he's doing. Superb.
and a chinese man that didnt
He should be an electrical engineer, designing electronics. He would be excellent.
Robert Seviour if you run LED at higher current it is likely to fail earlier , leading to failure of other LEDs which will take more current and then fan will stop spinning since all LEDs would have failed!
you were correct both the flickering and the heat are designed to attract more mosquitoes.
I looked into the basic principles of the leading traps and good ones use a photocatalyst material which generates co2 when exposed to uv. Best ones use timed co2 or propane co2 generator.
Good work with all your videos,
very informative. thanks.
Add some butyric acid in the mix. It was shown in Finland that a steel rod covered with butyric acid and warmed to 37 degrees centigrade was irresistable to female moscitos. Butyric acid is part of human sweat.
I love how you just jammed your hand on that loaded circuitboard to remove the screws without even seeing the caps lol
Sometimes in countryside chinese factories, these sort of small appliances are designed by interns.
Electronics is not a part of the standard education curriculum, so people's electrical engineering abilities are rather dubious.
cool, I was wondering how something could go to market that wastes so many resistors.
Damn, when you said you were hecking it, I was hoping you were going to add an electric grid to kill the insects
+arcadeuk Just pop the lid off and it'll do that anyway.
+bigclivedotcom Thanks for the video(s) - It's great instead of doing just a "teardown" you have given us a different if not better way of implementing a circuit. I doff my hat to you.
+arcadeuk me 2 :(
But it could be a "vegan" insect trap, where the beasties get sucked in and then released over next door's fence :-)
Maybe the 3K9 was added as a safety device just in case the fan was unplugged. That's a first for China.
+PIXscotland I'm thinking the same thing. I wonder if it also can be because these brushless fans are switching a set of coils with hall effect sensors. Not sure if there is always at least one coil pulling current..
+PIXscotland Yeah, that was my take on it too. Without the 3K9 the electrolytic should explode when the load of the fan motor goes any for any reason.
+PIXscotland And the 10R was there to reduce noise caused by the fan switching. At low speeds, the sudden jerking occurring when the coil is energized is what produces most of the noise.
+PIXscotland I believe you are correct. The fan will also power off if held in a stopped position long enough. He stopped it a few times, but didn't hold it long enough to cause the fan to give up. I could see that being a problem for the cap!
Kenji Fox
Nice in-depth thinking, but only good brand fans have that feature, mostly those from Intel. I can promise you that this generic Chinese fan won't stop the torque when held by hand.
Building a better death trap.
Running LED's in parallel so if one fails, the rest carry more current leading to earlier failure in the next, …
Exactly.
Guys, I found Scott Manley #2
+Karl XIV Johan Haha i was so totally thinking the exact same thing. Scott Manley's dad perhaps :P
Was just thinking that same thing. Just as entertaining too, and educational.
+Karl XIV Johan I knew i recognized the voice from somewhere!
+RMJ1984 his father passed recently :C
+Karl XIV Johan I was thinking a younger version of Sean Connery.
I have an idea you could make a competition out of Clive: make a gadget that is purposely made to fail by smoke or other major failure, but not fail right away, something with overloading major components, and the competition is the nearest time guess to the failure explodey part. filmed using time lapse perhaps.
+jusb1066 Something akin to his resistor roulette but longer term, I'm sure he could come up with something.
What was the new power draw? I'm curious to see how close it now comes to its 1.5W rating rather than the original 3W.
+Eric Meeson Ironically it's now bang-on 1.5W.
bigclivedotcom Sweet! Now it's closer to standards compliant. Well, other than the top off electrocutey bits.
+bigclivedotcom How precise is the meter actually with small loads? I've seen some weird measurements on 1 of mine. A clock radio pulled 8 Watts constantly. Using a 60 Watt bulb and then adding the clock radio revealed a 0.5 Watt usage which was more to what it should be. Surely the resistor design is crazy and the fact that you felt the warmth already is an indicator of power usage/waste.
+bigclivedotcom how much voltage is across the fan now?
+James Clark Just under 6V.
Perfect for small children's bedrooms... sarcasm at its finest ;)
Sarcasm? Nah... it helps find darwin award candidates.
As Clive says: "It's an electrical death trap 'cause the top just comes off"
I'm always leary of putting unprotected leds in parallel like that; thermal runaway wants to ruin your day each time.
Otherwise, great circuit hack!
+Senapspiser I was thinking more like 10 ohms. It does not take much resistance to prevent wild thermal runaway. With 68 ohms, you end up dropping 1.36V at 20mA and will lose a fair amount of speed on a fan that is already running quite slow, which means you may need to bump the dropper capacitor to 2.7uF to get the fan speed back up.
+frollard Yes, that's a significant problem. I think the original design, no matter how inefficient, was still better working.
zwz • zdenek If you are that worried about the LEDs dying, add a 1W 3.6V zener in parallel with the LEDs + resistors. Pick the resistors for 10-15mA per LED at 3.6V and let the zener deal with the remaining 40-70mA.
Teardown Dan
That would be inefficient in more than one way, plus Zener diodes don't come in arbitrary values. The knee of the diode is quite wide and the face value will be different from one in your actual circuit. You must design the circuit for at least 10% tolerance for the Zener diode. But as I said, a Zener diode is not called for at all here.
zwz • zdenek
Zener diodes exist in 3.6V and 5.1V values, which is exactly the range one might be looking for as a fail-over in case LEDs start blowing open. Precision is not important since you can pick the LEDs' current limiting resistors based on whatever zener voltage you get with your worst-case current where all LEDs failed open. When all LEDs are working, the zener gets significantly less current depending on how low the LEDs pull voltage across it.
The point of this modification was to make Clive's modified circuit safer in case of LEDs failing open and improve the LEDs' life by limiting current without adding significant complexity that was not already in the original design or drastically decreasing efficiency: the current limiting resistors were in the OD and if you pick the right resistor values for the LED and zener used, the extra power dissipation should be under 200mW without much effort.
You need heat to attract mosquitos.
That's right. Mosquitos are attracted to heat and CO2. Then again, the device might just suck them out of the air.
I'm not sure but you know how he said the board got hot that could be to attract the skeeters
@@noelsnyder9272 clever!
I think I can explain what the 10 ohm blue resistor is about. I had to replace one of those that was in my Dreamcast. It's designed to act like a fuse and break, like when someone connected a shorted controller to my Dreamcast, had to replace the fuse to fix my controller ports.
I love it when someone who puts close to raw socket power in his bath tub to heat the water says something is dangerous because the lid can be screwed off.
Nice video, i liked where you redid the circuit although I was a bit disappoint that nothing exploded forcefully.
Fun stuff as always sir! The tray is I believe a carcass removal device.
As soon as he opened the top, I was like, "I can totally improve that circuit!" Then he did exactly what I had in mind. Good on yah, mate.
Aww hell, I wanted to see the current draw after your modification. :(
1.5W
I think you are right about the heat attracting insects. Mosquito killers in the USA often have heaters or even use propane heaters to warm the units. In the case of the propane versions the CO2 produced also works as an attractant.
Oh boy oh boy, off-the-shelf electronics, simple sircuitry, 100% plastic parts, you can totally 3d-print something like this.
This reminds me of those dodgy, mains charged insect whackers, that look like a shitty tennis raquet. First time I used one, a blowfly flew into it at full charge, (the fly and the whacker), basically nuked itself , making a noise not all together unlike a .303 rifle shot. I was actually terrified everytime someone picked it up because I was scared they would touch me with it. Another quality bit of plastic shit courtesy of, the People's Republic of China.
tbh i used one like that for years and it never let me down. ah how i love the smell of fried mosquito in the morning...
boertje1998
It never let me down, either. It just scared the fuck out of me.
+Sue Mead Wow, really? Man, that would be a cool thing to have.
+boertje1998 I usually stick with toast.
+David Tao (twilysparklez) Americans would love it.
2:04 "perfect for small childrens bedrooms" and im dead XD
The only thing more satisfying than doing a good mod is having it be practical and usable.
They don't always go together but when they do it's magic.
I liked the redesign. At first I thought it was a bit risky to connect the LEDs in parallel like that; if one of them goes bad, then the other five will have to sink more power, which means they'll probably go bad at the same time. On the other hand you saved a bunch of components and, in hindsight, you measured the supply current coming off the reservoir capacitor to be just about right for six LEDs (about 20mA each).
I've only found your channel recently, but I'm liking it so far! Subbed for the circuit diagram and clever redesign.
"Awesome! that gives the clvies seal of approval" LOL
I just bought two, one for each of my young daughters! Heck it has Clive's seal of approval, and they are pink!! ;)
As a bachelor in linguistics I have now acquired some fresh knowledge - certain people can actually take apart electrical thingies they own, analyse the circuitry, *understand* how do its individual parts work together and improve it. Also, apparently, the thingies can come from their manufacturer with weird and irrational mistakes, just like my pupils' essays. Once again I look at this world a bit differently, thank you.
I have discovered that a shot glass with a little apple cider vinegar and covered with tinfoil and a small hole works quite well. It doesn't use any toxic chemicals (well I guess the vinegar COULD be toxic if you drank several gallons) and it draws exactly zero watts. In fact you probably should not plug it in at all. Actually if it's possible to plug the shot glass in find some other shot glass that does not plug in.
Eric Taylor Yeah but i dont want my shit to smell like vinegar so ill pass on that 👌
"...it exposes a live circuit board at 240v....AWESOME!! That gets the Clive seal of approval, perfect for small children's bedrooms..." Damn I needed that laugh. This channel is easily one of my favorite UA-cam subscriptions
Just subscribed. I definitely subscribed because of the way you speak. Not the accent but the word choice You ask questions and point out odd things in such a way that we're walked into the information with a fluid line of thought. I really would love to know your process for these videos. Its very much so informative and is perfect for teaching/instructing. Its probably just a result of speaking out your own thought process after having a mastery of the information. probably something without a process behind it its so perfect.
Wow very cool. This was a good example of the first year in electronics. You can clearly see a Wheatstone bridge and a tank circuit. Probably the only things I remember from school 20 years ago.
+Eric Arson haha you must be joking. Wheathstone bridge...
no, that is the most basic curcuit to change AC voltage into DC voltage for the LED and that DC fan.
just look it up but spell it wheatstone bridge
+Eric Arson I think you mean Graëtz bridge (Wheatstone bridge is the one with 4 resistors)
I believe the brown inner tray is meant to be a filter to prevent bugs from being drawn up into the fan and then spewed out into the world to continue to wreak havoc.
From the Predator how it works: " The mosquito trap mimics a human prey 24/7 by releasing a continuous stream of carbon dioxide (breath), heat (body heat), moist (breath) and scientifically proven Rapid Action attractants to draw mosquitoes to the trap.". And one of the companies selling this thing is also selling octanol. Also, add sugar to the water. They also mention UV-LEDs.
Top marks for the death trap design.
Great hack.
There's something delightfully comical about a device that kills bugs by whacking them with spinning fan blades.
I think the resistor across the fan needs to be there because it s a discontinuous load. They usually have up to four switching transistors in them which fire in sequence pulsing the commutatorless motor around. The fan usually has a ring magnet motor with a couple of drive coils. During the off period, the voltage may rise too high causing voltage breakdown of parts in the fan. The resistor should stop it going into the hundreds of volts.
Love the use of a fuse? If i were cynical, I'd say the drop resistor heat is there on purpose to also act as an attractant.
The design would work better with insects if the capture was above, not below the entry inlet. Insects fly up to escape. Flys jump into the air and cannot fly backward (this is how you get them, always attack from the front). A simple design would be a bottle on top and a motor that vibrated the whole thing every 30 seconds (like a pager motor).
Wow, that would definitely NOT get CSA approval! lol Love your videos - as usual, keep up the great work!
Clive, do the folks at Poundland, et al, roll their eyes when you walk in the door? Do they watch your videos and realize what kind of lovely pink products they are schlepping off on folks round your way??? Love the Clive seal of approval on this particular pink product....
If nothing else, these videos are teaching me that electrical imports from some countries is a real Wild West show.
It's very random. Often dangerously so.
1:53 this got me rolling on the floor.
Clive, you didn't understand the concept. You just ruined the business of the distributor for 100k resistors - perhaps it was the brother of the guy who made this miracle of chinese technology :-)
Absolutely love your work!
Dad had a retail store since the 60's. One of the first Chinese home stereos we got in was subject to a recall. It turned out it got passed customs only because of the UL label on the cord. The guts of the stereo was poorly designed and several had caught fire in homes.
You'll have to run it overnight outside and see if it catches anything. I'd be very curious to see if it works better than the traditional electrified grid style (or if it even works at all).
I wouldn't be surprised if this was someone's high school project and someone thought it was so good that it ended up on Banggood.
One of the most pleasant nice on ears "awesome" I had heard in a long time.
the "secondary" bin/bowl aids in the dehydration/death of the insects. they have no source of liquid and they are being "air dried" just a little quicker.
Well moths and gnats seem to be more drawn toward blinking or flickering lights as opposed to 60hz or upward lights, though generally it's the brightness above that which they go for, so it'd only be useful in the dark.
Certain insects will also go for heat, and the fan sucking it in could increase the attraction.
That has got to be the best video title so far.
I think it was supposed to flicker...
I mean if you use a diode in an alternating current circuit, you get interrupted pulses from one direction with a frequency of 50/2 Hz
Blue strobes, plastic basket, and 80mm computer case fan.
Neat
They couldn't even manage to build a proper SMPS into it, now that is scary.
My guess is that the 10R resistor in series with the fan is to prevent inrush current, and the 3.9K resistor is probably to absorb some back-EMF and protect the electrolytic cap when you turn the unit off.
hahaha, you take something apart, and tell tell how they've done it wrong. Keep breaking stuff apart, Clive! I'll come watch
That's neat, such a great easy servicable twist off access to PCB ^^ other manufactures should learn ^^
channel motto: WHAT COULD POSSIBLY GO WRONG?
Good job! Now you have a more functional bug trap and some free power resistors!
I think the flickering LEDs were intentional.. or at least I can see why it was included...
I tried living in NZ years ago and had to build a pc to house the cpu, gpu and ram I had carried over in my backpack from scotland. I was getting parts shipped over from all across nz, but the selection was ridiculously low compared to the wonder that is uk inet shopping even back then, and in the end the ONLY 120mm fans I could lay my hands on in a reasonable time had blue LED strips wrapped around the inner tube (or outer ?, depends on which way ya look at it :)
I figured sod it, can always cut them out for something else if I hate the look...
That PC was an insect killing machine ! :D... kiwi land has way too many insects but heh, at least the room I worked in was slightly less insanely full of insects, would just have to hoover out the pc case a couple times a week :P
I remember thinking at the time just one of those fans powered by usb aiming its air into a sieve would make a pretty bad ass bug killer.. then promptly forgot about it after I got back to a sane country where a killatron 9000 pc wasn't needed :(... at least not on the east coast hehe.
But yeah, one of the side effects from where the led strip was placed was the fan blades would block them out individually as they passed over, creating a pulse to the light. I have no idea if that aided in the bug attraction, it was just when you mentioned the lights flickering it instantly reminded me of that, and then you pulled it apart to show a pc fan... :)
I'm fairly sure any pc fan can be turned into a bug killer as long as there is enough clearance between the blade and the housing for the thinnest led strip ya can find... Being usb powered ya could lithium ion it for camping.
Edit : though the light would probably get annoying and will only attract more bugs to your tent now that I think about it hehe.. not that sensibility comes into it when you have a product to sell...
I'm not saying I think this is actually a good / efficient bug killer in any way hehe, I think it was mainly moth type bugs good old killatron sucked up.
But when you happen to be in a geographical region where your house is invaded by a thousand moth type things every night and have to hoover them up every morning... having a collection point for when the lights go out is kind of great, even if it is a pc full of gear worth carrying half way around the world :P
It is like a mini version of switching all the lights off in house apart from one and leaving the doors open so you only have to hoover one room in the morning ;)
i don't even understand a bit of electronic
why i found this so amusing?
Why am i here?
I wonder if the brightness and the pattern of the lights was deliberate. Might have been essential in attracting a certain kind of insect.
This is one of my favorite videos of all time.
Hey, wasn't that second resistor in front of the fan a voltage multiplier. Of course the amp would've dropped dramatically. A hot pink death ball, lol, I like that. How about a discharge cap and a zapper grid just below the fan, for a "Tool Man Tim Taylor" approach (man-grunt "oh-oh", more power) Bzzt!
Oh, and discharging a cap with your hand...yea. That reminds me of my experience with my first generator. Two AA batteries an e motor, and some round Neos on a bottle cap makes about 150v ac through a small aquarium air pump coil, and has a nasty bite. Nicknamed the gen "taser" after that. Love that taste.
The not-shitty one i have in the US is called Dynatrap. It uses a small UV flourescent coil and bigger fan. They, at least the Dynatraps, work incredibly well.
HOW MANY WATTS??? after the hack?
+Mikkel Bundgaard 1.5W
+bigclivedotcom Got to wonder what the designers of this were thinking, not only does your design do the job better but surely it should be cheaper to manufacture all those excess components do have a cost.
***** Perhaps xD
2 questions:
1- Does it really catch insects?
2- Does it really draw 1.5 W now that you've modified it?
"What could possibly go wrong?" Based on these videos that must be the motto that many of those cheap Chinese manufacturers use for electrical safety.
I don't know how well that fan will chop up the insects, but maybe the point is to just prevent them from flying back out and thus starving them to death? Well, that's still better than the bug zapper trap I once had - it had a fan as well so it spread the smell of burnt insect all around the room.
I would suggest a 220V metal grid under the fan, it might work better for catching bugs and it's a bonus to safety! :D
Nowt like efficiently hacking Far Eastern goodies!
I do suspect the flickery LEDs might have been a deliberate design feature as bright static lights don't often attract insects, hence the use of florescent tubes in insect zappers and finding insect corpses when changing fluorescent tubes!
I guess insects must just like the delicious flickery, flickery!!
This reminded me of a Christmas tree installation that was running at 220V and I opened it while running without knowing that the transformer is inside not at the socket. And I was like: Hey, a trasformer, TRASNFORMER !?!?! I am lucky to be ok now.
couldn't help but notice the small cut on your knuckles. I have learned this is the true sign of anyone who works with electronics/computers.
Seriously, try working for 30 minutes in a metal case and tell me how many cuts you get on your knuckle's/fingers
0 Cause im careful.
Well sometimes when the computer is on i hit the coolers but it doesnt hurt so i dont mind
1 cut = electrical tinkerer
Many cuts = automotive tinkerer
I don't know what it's like for insects but flickering draws the eye more than constant lighting.
i am now addicted to these videos!!!
please keep making more !!!
Isnt 220v a bit much for a fan and a few LEDs? Or is that just the normal mains voltage in that county?
Our standard supply is 240V here in the UK. China uses 220V.
the fan is probably a standard 12v computer fan, and with what he said of it only getting about 7v or 8v would explain why it ran slowly, but most people have 120 or 220v mains, so its more convenient to just make a PSU to drop it to the correct voltage, otherwise you would have an external transformer (wall wort) or run it on batteries which less people like. But Junk is Junk, we live in a consumer world were we by the most useless things
+bigclivedotcom 240v power supply standard? lucky! its more dangerous for me to get shocked, where I live, but less painful.. XD
Oooops! 240V? 'Fraid not, Clive. From the Electricity Safety, Quality and Continuity Regulations 2002:
"... the frequency declared pursuant to paragraph (1) shall be 50 hertz and the voltage declared in respect of a low voltage supply shall be 230 volts between the phase and neutral conductors at the supply terminals".
The reality is, the numbers were fudged such that 240V is still within tolerance of our new 230V supply, so most power system still put 240V to the home. But we ticked the box of moving to a standard 230V supply, so all's well.
I have no idea what you're talking about but somehow I like this video.
I think you still need some resistors for the LED'S if you run them in parallel coz ptc coefficient and thermal runaway. Better would be to put the LED'S in series reducing the wastage in the dropper resistor after all, then you can be assured all LED'S are running the same current. oh and I read somewhere that LED'S should have around 10mV/ degree C.
I don't think that most insects would see that wavelength of light produced by the leds, or at least not be attracted to the led light. Probably used to resemble the color of a bug zapper vs have any functional use.
Basically what he's saying is: If you're going to cheat, at least cheat properly.
Hi Clive, are you normally fully isolated from ground? I would guess so, otherwise you'd have been zapped a few times in these videos.
+pepper669 Yes I am. I wouldn't be doing stuff like this with work boots on a concrete floor.
What was the current draw after your modification? I'm curious to see. obviously from the mod it'll be lower, but how much?
Mosquitos home in on their target by smell, sight (movement) and thermal sensitivity. A warm, flickering object is probably quite appealing.
Best words ever.. "What could possibly go wrong"
I think you were onto something with the heat generated by the resistors. Many insects are attracted to body heat. Mosquitoes, for example, wouldn't really care about the blue light, but the heat and air movement would appear to be like breath from an animal.
This thing looks like it was rejected from the assembly line as a lettuce / salad spinner thingy, and instead of tossing the thing in the recycling bin, some enterprising Chinese business pirate rebadged it & subsequently sold it as something far FAR worse.
told all my family aboot these mains adapters ,and pointed them to you videos.
At 9.04 your circuit would only have one LED lit. (That would be the one with the lowest internal resistance, stealing whatever current was available,) OR they would all be at differing brightness. Series would ensure even brightness, but if one failed they would all go out.
norm morse if you run Led at higher current it is likely to fail earlier , leading to failure of other led which will take more current and then fan will stop spinning since all LEDs would have failed!
Current will not distribute equally when connecting diodes in parallel, it may kill the diodes.
Fan when turned off can make a big inductive spike and kill the diodes. Short it with a parallel diode in reverse.
+cyberconsumer Big fat capacitor, so when power is turned off the fan runs down and then all the LEDs fade away slowly and evenly.
I'm a bit late, but hey-ho. Did it use less power? All those resistors must have been wasting a lot.
Asking the real questions. Why didn't he measure the power draw afterwards dammit?
We can definitely assume it did. But yeah, getting a number would have been a nice finish.
1.5 watts
Oh Em Gee. Wow, 220v mains ready to show you God. Reminds me of going down town last year on Beale Street (look it up) and this guy asked me (my mother and sister were there with me) if I wanted to go meet God and was luring me off. Well, I could always buy one of these and eliminate the middle man. Two thumbs up indeed.