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@roelvangompel500 Ай бұрын
Heel helder verhaal. Heb je nog triacs over? Ik wil er wel een.
@AJApper Ай бұрын
Ja, ik heb ze nog. Is goed.
@AJApper Ай бұрын
Stuur je adres even via alfreddotapperlooatgmaildotcom
@roelvangompel500 28 күн бұрын
@@AJApper Alfred, alle e-mail wordt steeds gebounced. Is het e-mail adres wel goed?
@AJApper 27 күн бұрын
@@roelvangompel500 het e-mailadres klopt helemaal maar is een beetje anders genoteerd, op internationaal voor hetzelfde doel gebruikelijke wijze, om te voorkomen dat het account teveel door bots veroorzaakte spam krijgt. Dot = punt, at is @. Groeten, Alfred
@teflon_ptfe Ай бұрын
Good video! It's worth noting that pancake GM tubes are calibrated to 662 keV gammas, and will over respond to sub 200 keV gammas including the 60 keV gammas emitted by am241. So the device is still probably over responding a fair bit, but it does give you a reasonable rough idea of the correct does rate. It's also a bit weird to measure dose rate on contact, measuring it from a couple feet away with additional calculations to correct for the over response would give you an accurate risk assessment of the external gamma rate (which is almost zero). Of course special precaution should still be taken for Am241 foils, as the internal dose is extremely high, so not messing around with the foil and preventing contamination is the biggest concern.
@AJApper Ай бұрын
Thanks for your comment. I was not aware that GM counters are even capable of distinguishing between different gamma energy levels. I always use a scintillator and MCA when I want to determine gamma energies.
@HansRoelofs-di3fn 2 ай бұрын
Is er een uitleg hoe de motor te testen buiten de regelaar om? Ik denk dat ik ook een defecte Triac heb, maar ziet er aan de buitenkant nog goed uit.
@AJApper Ай бұрын
Als de triac kapot is blijft hij in geleiding en werkt de motor dus op maximaal vermogen. Bij mij bleek de motor met de triac in positie al te draaien op 10 V gelijkspanning, wat mij onmiddellijk had moeten leren dat de triac kapot was. Een triac hoort niet te geleiden bij zo’n lage gelijkspanning. Hoe de triac er van buiten uitziet zegt niets over zijn functioneren. Als je de triac unit verwijdert kun je de motor aansluiten op een lage DC of AC spanning en kijken of ie goed is.
@DanieldeKraker 2 ай бұрын
Mooie uitleg van demontage in deze video. Het probleem van mijn C3 is niet alleen de triac maar ook de thermosensor. Kan echter geen leverancier vinden voor een complete stekker (triac en sensor). Enig idee?
@AJApper 2 ай бұрын
Misschien is een losse clixon wel te vinden. De triac’s die ik heb zullen ook wel in de C3 passen, ik kan je er eentje sturen 😉
@DanieldeKraker 2 ай бұрын
@@AJApper Mede door uw uitleg om de triac te testen bleek det het niet aan de triac lag maar aan de thermosensor waarvan één aansluiting was afgebroken. Met wat soldeerwerk de verbinding weer herstelt. Alles weer gemonteerd en hij doet het weer als ervoor. Nog dank voor het aanbod van de triac
@AJApper 2 ай бұрын
@@DanieldeKraker Mooi dat het gelukt is !
@DrBest-dm1vc 2 ай бұрын
Unnecessary
@denifnaf5874 2 ай бұрын
"Shit wrong lever"
@jwb6583 3 ай бұрын
Zelf heb ik een Miele complete c3 (black diamond ecoline) op FB marketplaats gekocht. Hij vindt echter dat die oververhit raakt(terwijl dit niet zo is) en gaat dan lager toeren en stopt zelfs na een minuut of 10 met stofzuigen. Weet u waar dat aan zou kunnen liggen? Kan zo'n triac vervangen dit misschien verhelpen?
@AJApper 3 ай бұрын
Lastig. Je zou erachter moeten komen of er een temperatuursensor is die het systeem gebruikt om die ' oververhitting' vast te stellen. Vlak bij de motor bevindt zich alleen de triac die gekoeld wordt door de luchtstroom. Ik heb bij de mijne geen sensor aangetroffen. Ik weet niet of de regelprint kan vaststellen of de triac te heet zou worden. Het is eenvoudig om de triac te vervangen, maar ik weet niet of dat de oplossing is.. ik ben hobbyist en medicus, maar hoogstens ervaringsdeskundige op stofzuigergebied.
@jwb6583 3 ай бұрын
@@AJApper Ok, bedankt. Ja haha herkenbaar. Ik heb ook een KZfaq hobby en techniek kanaal en mensen denken gelijk dat ik een cvketel monteur of een loodgieter ben, maar ik ben een ict-er.
@hansvandermade6045 2 ай бұрын
@@AJApper Bij een Miele C3 zit er in de module in de motor een triac en een temperatuurschakelaar (klixon/sensata 3MP, een klein bimetaaltje in feite). De module in deze video heeft ook zo'n platte klixon naast de triac. Als de motor smerig is, zorgt de extra trilling (onbalans) soms voor afgebroken pootjes bij de triac of de klixon, heb ik gemerkt.
@AJApper 2 ай бұрын
@hansvandermade6045 Bedankt voor je commentaar, Hans. Mij was die klixon niet opgevallen. Nuttige aanvulling !
@hansvandermade6045 2 ай бұрын
@@AJApper Het is ook een erg klein ding! :-)
@hermanngerhold7572 3 ай бұрын
nice thx
@cornenho 3 ай бұрын
Hoi leuke video! Ik heb een spit ac1630p. Die gaat aan en dan loopt ie terug in toeren en gaat daarna haperen en valt dan helemaal uit. Na een seconde of 20 kan ik hem weer starten en dan weer hetzelfde riedeltje. Wat zou dit kunnen zijn?
@AJApper 3 ай бұрын
Ik weet het niet goed. Misschien is het de motorregel-elektronica. Om na te gaan of de motor zelf intact is zou je hem kunnen aansluiten buiten de regelaar om.
@craigrushforth2967 3 ай бұрын
I just bought a ‘broken’ C3. I removed the motor and cleaned out the fan (filthy). Reassembled and the motor runs, but speed is variable and strong smell. Time for new motor or faulty triac do you think ?
@AJApper 3 ай бұрын
I don't think it's the triac. Did you remove the block brushes ? The variable speed and smell might be a brush problem or a bearing problem. Does the motor armature rotate smoothly in its bearing when turned by hand ?
@guyeshel9316 4 ай бұрын
You just solved my problems in life
@konstruct11 4 ай бұрын
Cesium 137 use the main byproduct of a nuclear explosion that’s harmful to humans. It releases gamma rays 5 cm of concrete will drop the gamma radiation by half I think 20 feet is deep enough unless you’re right underneath the explosion.
@AJApper 4 ай бұрын
@mikevandoesburg7346, ik neem aan dat je een triac bedoelt voor de Miele stofzuiger ? Je reactie staat namelijk niet bij het filmpje 😉. Die heb ik nog wel liggen.
@mikevandoesburg7346 4 ай бұрын
Heb je nog zo,n onderdeel over? Die van mij is ook defect. Mvg Mike
@anthonyshort3437 4 ай бұрын
Does this work if my temperature is running at room temperature
@basvanriel1806 4 ай бұрын
What do you mean? Your beer is not getting cold? Or do you want your beer to be at room temperature? Because this adjustment makes your machine think your beer is at 3°c when its actually not that cold (the temperature depents on how high your resistance is). So you can controle the temperature (3°c-10°c) If you want your beer at room temperature. Just turn your machine off after getting a beer. But this is not good for your beer so your beer will taste like shit within a couple days. If your machine isn't cooling your beer. Call Philips and hope they fix it for you
@yaykruser 5 ай бұрын
Iridium has twice the density of lead, does that mean that 1cm of Iridium offers the same protection as 2cm of lead or more? for lets say cobalt 60.
@AJApper 5 ай бұрын
Yes, linear attenuation coefficient (µ) for Iridium is lower than for lead, but its mass attenuation coefficient (µ/rho, in cm^2/g) which corrects for density is only slightly less than for Pb. So, indeed, for 1.25 MeV gamma rays, a 1 cm Iridium layer would be as effective as a 2 cm layer of Pb.
@bentleybrabec 5 ай бұрын
4:04 4:27 amazing view of the Alaskan mountains
@bentleybrabec 5 ай бұрын
6:17 nice landing
@bentleybrabec 5 ай бұрын
2:59 fantastic view of the other 747s
@philipmcnally39 6 ай бұрын
Great video ,very good graphic on the Triac .
@AJApper 6 ай бұрын
Thx
@lkm1999 7 ай бұрын
how much is that device cost? r they for commercial or consummer ?thanks
@AJApper 7 ай бұрын
RadAlert Inspector $200 on Ebay, NE Tech electra ratemeter $250 on Ebay, Bicron NaI scintillator $120 on Ebay.
@The-One-and-Only100 7 ай бұрын
Does the same principle happen with radium
@AJApper 7 ай бұрын
Yes, it does. However, Ra-226 decay is more complicated than Cs-137 and Co-60, generating lots of peaks in its gamma spectrum. Apart from the famous Pb-214 peaks at 242, 295 and 352 keV there are also Bi-214 peaks. They all will generate their own backscatter peaks, Compton continuum and Compton edges, making it difficult to interpret the spectrum. Nevertheless, a higher than usual backscatter peak due to gamma ray reflection in the aluminum block might occur, but it might be obscured due to the many other peaks. I did not test this. I thought it would be better to look at simple isotopes with clear photo peaks.
@The-One-and-Only100 7 ай бұрын
@AJApper I tested it myself with a radium source and a cast iron skillet (I don't have an aluminum block lying around), and the source was point blank on the skillet with a radiacode 102 an inch away and let it run for 90 minutes Results were inconclusive
@AJApper 7 ай бұрын
@@The-One-and-Only100 Could you identify a backscatter peak ? To enhance the backscatter peak a very massive block is needed, I assume the cast iron skillet is not thick enough.
@The-One-and-Only100 7 ай бұрын
@AJApper the only blocks I have are lead, but I don't want to get false readings from bremsstrahlung
@peterbuntinx6140 8 ай бұрын
Deze video heeft mij zeer goed geholpen. Dank U. Groeten peter Buntinx repair-cafe Zonhoven.
@f0lzen 9 ай бұрын
hi! do u think a secret stash made from lead and attached to a car/suv can manipulate x-ray machines and scanners at borders (in the stash there will be cigarettes lots of packs like 2000 which is rougly 40 thousand cigarettes) is it possible bro?
@AJApper 9 ай бұрын
@bibilapetite. I just cleaned the metal fan as shown. I did not replace any parts. You could try. It’s rather simple.
@Pedro-rh4jp 9 ай бұрын
The last 26 seconds show nothing :(
@AJApper 9 ай бұрын
That is to let the acquired information sink in so that it stays with you better 😉
@Telyron 10 ай бұрын
Hello I tried to replicate your experiment using radium watch dials as a source and I obtained an average factor of 0.63, which sound far off the 10 you wrote for 200keV gamma rays (radium has a peak of 182 I’m told), do you have any idea of why my coefficient is so far away from literature?
@AJApper 10 ай бұрын
Hi Lorenzo, a Radium-226 source not only emits 186 keV but a lot of higher energy peaks also, the famous 241, 295 and 352 keV from Pb-214, than Bi-214 at 609 and 768 keV and Pa-234m at 1001. That is why you measured a low factor. Ra-226 is a component of the U-238 decay chain. Radium-226 is a difficult source to use in this experiment because its decay involves so many different gamma energies. It is easier to use an isotope with one prominent photopeak.
@Telyron 10 ай бұрын
@@AJApper but the average of the peaks you described (relative to how intense each peak is) shouldn’t be around 600KeV? So about the attenuation factor for shielding cesium which is 5.5… Mine is still too far off right? I know that radium is not ideal, but it’s what I have (in large quantity) and I need to shield it to at least 1/8 of original activity… Should I use the factor I found or it’s wiser to use a higher factor? (To save expensive lead)
@AJApper 10 ай бұрын
@@Telyron Mean value is not useful since µ value declines sharply with increasing gamma levels. Thus the effect of the higher gamma energies contributes more to the measured attenuation value. Besides, I forgot to mention their are a lot of peaks in the gamma spectrum of Radium-226 above 1000 keV arising from Bismuth-214 : 1120, 1238, 1377, 1407, 1729, 1764, 1847, 2118, 2204, 2293, 2447 and 3053 keV. Your value is probably a reasonable approximation. The relative contribution of the different energy peaks to the total spectrum also plays a role of course.
@Telyron 10 ай бұрын
@@AJApper thank you you have been of great help, that tells me I need to spend a lot of money on lead sadly
@AJApper 10 ай бұрын
@@Telyron Or keep a safe distance. Radiation level quadratically declines with distance.
@TrainwaySons 11 ай бұрын
Great cello techniques
@AJApper 11 ай бұрын
I did not realize. My daughter practicing, 12 yrs ago. Now she is a professional cellist
@jeroentabor4760 Жыл бұрын
Volgende keer originele zakken gebruiken word beger gefilterd en blijft je machine schoon
@AJApper Жыл бұрын
Klopt wel Jeroen. De originele zakken sluiten waarschijnlijk beter aan. Bij niet-origineel, verleidelijk want 4x zo goedkoop, moet je goed opletten of de slang goed aansluit. En als dan ook het motor filter wat gaten heeft …. . Hoe dan ook, dit probleem zou niet ontstaan zijn met originele zakken en origineel motor filter. Maar het was ook wel weer aardig, hoewel time consuming, om dit op te lossen.
@bibilapetite 9 ай бұрын
I just got a vacuum on the street that seems to have this problem. Would you recommend that I try? Did you just clean the metal part as shown? After you cleaned it I saw that you got another part out but did not understand if you changed it, cleaned it or just replaced it.
@rafagleich2258 Ай бұрын
@@bibilapetite Hi there,I'm in the same situation. Just found it on the street, the same problem. Did you managed to clean it that way? did it helped?
@marcokohler7709 Жыл бұрын
Hello, I wanted to know if I can also use a 10k potentiometer with a built-in switch for this or does the switch have to be separate
@marcokohler7709 Жыл бұрын
Hi 1 question I have built the porous one in between but the temperature cannot be adjusted
@AJApper Жыл бұрын
No, you need a separate switch to short the potentiometer in order to restore original settings and to read true beer temperature. A pot with a built-in switch if switched off interrupts the circuit.
@arthurmead5341 Жыл бұрын
So glad to see you posting videos again!
@AJApper Жыл бұрын
Thank you, Arthur !
@tnwnl Жыл бұрын
Love it. How much do these cost at Scionix?
@AJApper Жыл бұрын
2K
@marcokohler7709 Жыл бұрын
Hello, I think the idea is great, I would like to install the parts exactly like you did, can you send me the links to the parts, thank you
@AJApper Жыл бұрын
It is only a 10 K potentiometer and a switch. You can buy them everywhere.
@KarbineKyle Жыл бұрын
Awesome video! I finally got a 1" NaI:Tl GammaSpectacular spectrometer kit, and I use the PRA software with it! It works great, even though the efficiency is lower, since I'm using a smaller crystal. I'd love to try CeBr3, from Berkley Nucleonics, but it's so expensive! HPGe would be the best of the best! I was able to identify Kr-85 (514 keV) from some old Western Electric electron tubes, ca. 11/1973, 15 μCi, which both only give me about 500 CPM on my Inspector USB Geiger-Müller counter, now that the activity is only about 0.637 μCi, 49 years later. I'm going to try Pu-239 next (17.1 μCi, total) from old Soviet smoke detectors, to see if I get any of the low-energy gamma energies, like Am-241 and _maybe_ U-237 from Pu-241, which undergoes β- decay, which emits very low-energy-about 20 keV β- particles, and on occasion, α decay to U-237. The problem is that plutonium isotopes have low branching ratios for gamma rays. It's easily detectable up close, with my Inspector USB Geiger-Müller counter, however, a sheet of paper blocks _almost_ all of the radiation, being mostly α particles. Even my CD V-700 on "X1" only goes up to about 100 CPM (β and gamma) per source. I was able to detect some gamma energies from my trinitite, but at a lower efficiency, since your NaI(Tl) crystal is twice the diameter of my detector. Anyways, _excellent_ video on my favorite hobby! I'm glad to see when you post a new video, as they're very well done! You're a smart man, and your methodical approach is paramount! Very well done! Thank you for making this! Have a Merry Christmas and a Happy New Year! 👍
@AJApper Жыл бұрын
Thank you for your nice and detailed message and your compliment. Enjoy this exiting hobby. Happy New Year !
@LKDesign Жыл бұрын
Does the machine control the speed of rotation? Can you make it spin way slower?
@AJApper Жыл бұрын
Yes, it is a rotating magnetic field. Perhaps lowering the voltage will slow the rotational speed, but I did not try. Depends on the circuitry. Realistic speed will be difficult ;)
@JohnDuraSSB Жыл бұрын
thanks
@MalcolmJames-sg3zg Жыл бұрын
Well i wouldn't have thought it was the switch 🤨 thanks
@AJApper Жыл бұрын
I remember suspecting the switch because smoke was coming from the vicinity of the switch.
@RobertNesius Жыл бұрын
Wondering if you still have the schematics to share... if so my email is my last name at gmail...
@AJApper Жыл бұрын
It is only a simple drawing. I will send it to you. Regards, Alfred
@sinnella1 Жыл бұрын
So aesthetic
@AJApper Жыл бұрын
@Muonium 9 years ago I made my first video on gammaspectroscopy. kzfaq.info/get/bejne/Z5l4aq1nzJPcoas.html At 1:48 you can see the primitive device I mentioned to connect the scintillator to a PC o r laptop soundcard.
@Muonium1 Жыл бұрын
Do you believe this would be possible to replicate with a Raysid or possibly even Radiacode 101 spectrometer?
@AJApper Жыл бұрын
Perhaps. The scintillator crystals in these devices are small : Raysid has a 5 cm3 CsI(Tl) crystal and RadiaCode 101 contains a 1 cm3 CsI(Tl) crystal. This means efficiency will be low. I registered the Trinitite gammaspectrum with a Scionix 2" scintillator, around 100 cm3, and it took several hours to get a decent spectrum. Although efficiency is not linear with respect to scintillator size I assume it will take many many hours to get an interpretable spectrum with the devices you mentioned. After all, gamma radiation level of the Trinitite is only slightly above background. Circumstances, especially temperature, should also be perfectly constant during these hours, because otherwise energies will be shifted a bit which deteriorates the spectrum accuracy.
@Muonium1 Жыл бұрын
@@AJApper this is what I suspected might be the case. thanks. looking for the cheapest way to start doing spectroscopy, but worried about resolution of the tiny portable devices and the fact that the Raysid is totally sealed and will become a paperweight once the battery inevitably dies in a few years.
@AJApper Жыл бұрын
@Muonium, you could start with a 1 “ NaI(Tl) detector from Ebay. Connect the scintillator to a laptop running PRA software. A few years ago I used a very simple device to connect the scintillator to the computers soundcard. A capacitor to block the scintillator’s high voltage and a 220 kOhm potmeter to adjust the level. Although rather primitive, it is a cheap solution.
@Smartgasm 2 жыл бұрын
Hello! Can I use snippets from your video? I'm making a video about neutron bombs and it would help me explain nuclear physics better by demonstrating alpha particle emission from americium 241.
@AJApper 2 жыл бұрын
That is OK if you show citation/source and a link to the original video
@Smartgasm 2 жыл бұрын
@@AJApper Yes, of course, i will indicate the source directly in the video and in the description below it. Thank you!
@RyanMcDonald 2 жыл бұрын
Do you have the V and A values for IN-16 tubes?
@AJApper Жыл бұрын
I did not try with IN-16 tubes. Voltage will be the same, but I assume mA value should be a bit lower, start with 3 mA burning current at 170V.
@boompresentation2468 2 жыл бұрын
Fiskw HD
@SqueekyBums 2 жыл бұрын
Thanks. It's ridiculous that the temperature isn't controllable from the factory when they intend the pump to serve many ales, all with different ideal temperatures. 🙄
@jimgallaher458 2 жыл бұрын
I've installed this hack, but when the temperature display is over 3C the fan (and cooler ?) continues to run, is this normal ? Surely the PD machine is factory set to cool to 3C and if you change the NTC resistance it will only make the machine sense a higher temperature and try to cool it ?
@AJApper 2 жыл бұрын
The combined resistance of the NTC and the potmeter determines the PD's cooling behaviour. If the NTC resistance declines, due to increasing environmental temperature (remember, NTC means negative temperature coefficient, the higher the temperature, the lower the NTC value, also demonstrated in the video) the PD starts cooling until NTC value rises and resembles 3 gr C. But we artificially add an extra resistance, the potmeter, and thus are able to shift the setpoint for starting the cooling to a higher temperature. The PD senses a higher resistance value and thus "thinks" temperature is low enough and cooling is not necessary. This way beer temperature can incline to 7 of 8 degrees before cooling starts.
@TheXone7 2 жыл бұрын
I am using Radiascan 710A, however when measuting Am241, covering with sheet of paper of even a thin plastic, there is half of uSv/h still coming. I thought this would be gamma, but the thing is, as soon as I put the beta shield on, there is almost 0,5 uSv/h registering, so very low alpha. Does this mean there is some beta radiation coming out of Am241?? Or is it gamma, but it is just so weak, that it cannot penetrate even the beta shield? Thanks for any advice. Tried to google this, but couldn't find answers, why Am241 could be emitting beta radiation or if the gamme can be so low it cannot penetrate even a thin plastic cover.
@AJApper 2 жыл бұрын
Am241 emits alpha particles and low energy gamma, mostly at 59.5 keV but also at even lower energies. It emits no beta. The pancake geigerdetector is able to measure the alpha particles but is not very sensitive with respect to gamma rays. I think your beta shield, usually a few mm of aluminum, also shields a substantial amount of the low energy gamma radiation from Am241. A thin plastic layer doesn't attenuate even low energy gamma.
@TheXone7 2 жыл бұрын
@@AJApper Thank you for reply. That would explain it exactly, why that happens. The gamma is low energy and the beta shield just stops it almost all.
@geologulup8986 2 жыл бұрын
Can you share the input data?
@guidob2007 2 жыл бұрын
Respect for how fast you can place the globe. It takes me at least 5~6 minuten with a lot of swearing.
@AJApper 2 жыл бұрын
Perhaps the internal design of my device is more monkey proof ;)
@aldotube88 2 жыл бұрын
Would love to do this but looks far too much above my head