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- čas přidán 7. 05. 2020
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Quick 861X: bit.ly/2ypfkBK
Quick 861DW: bit.ly/35DZIXd
Fake Quick 861DW: bit.ly/3fqFaG8
BEST BST-863: bit.ly/2SETQHW
Soldering Tools and Equipment:
Solder Paste: bit.ly/2E1P5jR
Solder Flux: bit.ly/2MQn7we
Quick 857DW+ Hot Air Station: bit.ly/2OWDvf4
T12 Soldering Station: www.banggood.com/custlink/3KK...
AC Version: www.banggood.com/custlink/3GK...
T12 Iron Tips: www.banggood.com/custlink/3DG...
Daniu Tip Cleaner: bit.ly/31VHwWM
KSGER T12-BCM3 Tip: bit.ly/2xgYXCQ
Test Equipment:
Mustool MDS8207 Multimeter: bit.ly/2kKHr7A
FY6900 Generator: bit.ly/2yZI40n
Differential Probe: bit.ly/31xNTOF
Microscope Equipment:
Eakins Barlow Lenses: bit.ly/3aBY5tR
Eakins Black Microscope: bit.ly/2VEcYaW
Eakins Camera Microscope: bit.ly/2x86hnT
Camera Adaptor for Microscopes: bit.ly/2KBZQMQ
Amscope Microscope Head (US): amzn.to/2YmZWNx
Amscope Trinocular Microscope (US): amzn.to/2YdBE8k
Amscope Trinocular Microscope (UK): amzn.to/2V8w9Gh
Swift SS41-WF20 Binocular Microscope US: amzn.to/2VLWEpb
Swift SS41-WF20 Binocular Microscope UK: amzn.to/2GYGYFV
Visit my website: www.sdgelectronics.co.uk/
#quick #flickering #ElectronicsCreators - Věda a technologie
I've noticed flickering on my LED workbench lights from my Quick 861DW, too. Thanks for finding out why!
Great channel. Really loving all these hot air station videos!
The half wave, if not finely balanced or in short time frame randomized is actually MURDEROUS to the main power transformer. Here is a story, (with names removed) about what can happen. When the inverter type welding power sources were first introduced, there was a user who had the utility power transformer "smoke". Of course he called the utility company for help and they came, found the transformer bad and replaced it. So, the welding power source was turned on again and the new utility transformer promptly blew up again. Upon further investigation, it turned out that the welder primary rectifier bridge had failed so that it became a HALF WAVE rectifier and it started pumping DC (average) through the transformer secondary.. The transformer core saturated and the primary current went sky high in spikes. The primary winding RMS current melted the winding or the copper, whatever. Anyway, pumping DC through a transformer is BAD and in some cases even worse. That, along with the human experience of flicker is a reason why the IEC and the European CEE standards list limitations to that kind of loads.
Wow never heard of this happening before
I found the video very useful! 😉
Thanks for posting.
Based in part, on your review, I picked up a BST 863. My lights do not flicker with that unit. I'm happy that I didn't go with the quick for a fair amount more money.
Do you have light on the same phase what BST?
Very informative. Thanks
Interesting.
In my masters school I learned that heating elements are usually controlled via pulse packet controllers (like the Metcal has, and that is not PWM) and not like a dimmer or vfd, just for the effects you have shown. We saw that works as well, but your mains is getting polluted beyond anything your electrical company and your other lab equipment will like...
@SDG Electronics so, can you imagine a fix?
With all of your experience with hot air stations, can you recommend one which can be set
to blow constant cold/room air? Also, preferably with encoders or potentiometers for control
of temperature and air flow. I agree with not pressing up up up up up up up up up up.
Thanks for your reviews.
You could take any hot air station and just add a switch to disconnect the heater's power supply, perhaps?
Hey @SDG what might also be nice is to examine the power supply in your led lights. To see if the flickering issue might be avoided there instead? Or if it will affect any type of leds, since there are different kimd / quality ones available. For example some leds are conventionally 'dimmable' whilst others are not. And some really cut corners with the power supply and generate their own problem interference or 'emissions' to a variety of greater or lesser extents.
I think the problem exists because the current regulation is usually done over multiple cycles. The transient waveform from the Quick station passes straight through because these are dimmable LED lights which can be dimmed with a traditional type dimmer.
@@sdgelectronics so an impulse response then? Shouldnt the quick have some sort of a mains filter or 'snubber' style circuit to try to absorb such transient? Does it happen because when the triacs transistor turns off it is happen abruptly at some point during / in the middle of an AC wave cycle? I wonder about this same issue for my other motor control project. For my fume extractor. Its a massive 8 inch fan that is way too loud and needs to be 'dimmed' somehow. Probably i will try to add snubber to this leading edge dimmer which aparrently (i am told) is best type for an inductive load. However heater elements like in the Quick are purely resistive loads arent they? So no kick back (out of phase) ? So it should just be a straight (0 phase) transient than? Maybe i dont understand properly, for why it cannot be filtered. Or maybe its only possible to be mitigating lessen the spike?. And cannot eliminate it entirely. Sorry for the poor knowledge here. My understanding is not the best. Lol tee hee
Why do these units generally have such large mains inlet filters?
I thought it was because of triac switching at first, before I learned they switch full or half cycles.
Yea the yihua 959d does the same thing.. ive tried massive filtering, isolation transformers, smoothing the power and nothing helps the flicker except adding a few massive capacitors on the power in which is sketchy to have on the device.. plus when it gets unplugged there’s a 50/50 chance that it will weld itself to a piece of metal or hurt somebody on accident.. the minimum capacitance to even effect the flickee for me was 20 μF.. 80 μF to make the flicker barely noticeable but the rework station ends up putting out an extra 100°c and the fan runs like a turbine on full speed.. so not a good fix..
The LED lights in my home office pulse when my wife is on the treadmill at the other end of the house. Never have tracked that down.
Do you think the firmware controls this? Perhaps it could be fixed by updating/hacking the firmware.
Could we please have some commentary on whether standards have anything to say on the matter. Have you checked your circuit resistance ?
My xtronic 4040 rebranded yihua does the same thing
These things cause more problems than just lights flickering; This thing has quite literally blown out the HDMI port on one of my TVs, one of my AV Receivers, and always causes HDMI signal to devices on the same AC circuit to loose signal for the entire duration it is powered on (heating element not even running). Thought it was a grounding issue on the outlets, but everything is wired correctly. It's starting to cause a lot of expensive problems, really irritating.
I haven't had any problems with my Aoyue INT 852A++.
I thought it was my house electricity problem 😔 it's just flickering all lights in my house. Does it have a fix to reduce the flickering lights?
quick 861Dw or 861d plus which is better?
Which is good for iPhone pcb between them quick 861dw or bst best 863..... I want to buy one please sir
Pulse-Density Modulation
Quick 861 origina armonicos en la instalacion electrica
Not grid friendly,
You have 240VAC? maby to much? We have 230VAC and I have worry to plug-in. I have the Same Hot-Air-Station buy. Inside the device are installed 200V Capacitors. Maby I should change this? What do you think?
200V capacitors are not connected to 230VAC ;) They are connected to DC just check the voltage there, I'm sure it's fine, else yes change them to a higher voltage.
By the way, with a full bridge rectifier at 230VAC you got 207VDC. 200V capacitor seems too low.
have money to was for all these toys then get halogen lights not he cheap LED crap lights.
Halogen lighting is very power hungry and runs hot.
The difference is that the hot air station will pay for itself and some people buying one only have money to invest and not just throw at things that won't generate their own money.
Seriously, not a good investment. Sigh. Get what you pay for? if only