Dinleme: 91,391 22:21320 kbps, 11,5 MbTür: mp3Şarkçı: Mr Carlson's LabDinleMp3 İndir Loading... Şarkı Hakkında Yorumlar ssharath nayak 2019-07-13T10:01:41.000ZI saw simple and clickedRRoflcopter4b 2019-07-10T23:34:26.000ZForgive me if I'm a little ignorant of transformers, but wouldn't the transformer itself work as a bit of a filter reactor by virtue of it's own inductance? And with capacitors on each side you would have a pi network here anyway. Do transformers just not work that way?CCharles Angell 2019-07-10T16:34:53.000ZSchematic & recipe? pdf or some such?ooverbuilt automotive 2019-07-10T02:11:50.000Znoisy fans do not bother me at all quit to opposite loud means its working with in resin of course ..good videoLLM 2019-06-19T17:33:02.000ZGood morning Mr. Carlson! I need to build a 115 VAC 300 Hz-800 Hz variable frequency power supply. Any tip or a schematic I could start this project? Thanks in advance, LewisAAslam Batcha 2019-06-16T06:06:22.000ZU at a space station bro?!😳CCobra Dallas 2019-05-29T15:45:49.000ZYou should build LF (low frequency) high voltage inverters with big amp capacity or ups function. A/C induction motors are 2 phase or are they one phase and have a soft start i think with rings to point direction so square wave will work or do you have to have a shine wave? I want to learn about battery chargers to build a high current charger on a solid state relay with boost or current limiting to run a 96v dc or its really 3 phase permanet magnet generator with double stator and windings (for low winds) 48v wild ac turbine. I want a 220v 3 phase because there probably no patent pending.TTommy Jensen 2019-05-22T20:08:45.000ZTalk like robot 😴😴RRobert Thomas 2019-05-03T18:27:05.000ZThat's a pretty cheap and simple way of doing that, and I am a little surprised that it works as well as it does, although single ended flyback power supply's are quite common and work quite well, they are simply rectifying and filtering the output, and using negative feedback to control the duty cycle of the mosfet to provide regulation, those power supply's use a powdered iron core that is non saturable meaning that it has a good Q factor as an inductor, which is generally not the case with low frequency laminated iron core power supply transformers such as the one you are using, they tend to be very saturable unless you take the core apart and re stack it with all the "E's" in one stack and the "I's" in another and then place a thin piece of cardboard such as that from the back of a notepad between the "E's" an "I's" to break the magnetic circuit so it won't retain high levels of residual magnetism, thereby allowing it to have a much higher "Q", and as someone else commented, about the current pulses that occur when that mosfet turns on and those capacitors in parallel with the transformer primary are at zero volts or even worse opposite polarity, you might consider adding a resistor of say 10 ohms or so just to limit the current peek a little, it'll reduce the stress on the capacitors and the mosfet.JJerry Mont 2019-01-27T12:27:20.000ZFabulous, Mr. Carlson. I'm getting an understanding about the differences between a SCR drive and the VFD drive. Thanks !LLaharl Krichevskoy 2018-12-18T17:04:58.000ZOne thing, you used 4 5W resistors to power the ic, I think a much better solution would be a circuit i saw on an emergency lamp board. Its just a capasitor as a reactance followed by a small resistor, a zener and a transistor and an electrolitic cap, all low voltaje. The circuit had a fault that the electrolitic cap was too small and so if you plugged it in at the peak of the sine wave it would overshoot and burn the transistor. The solution was to make the cap bigger so it wouldnt be able to overshoot.br />The input capasitor takes the bulk of the voltage drop and then its a simple zener-transistor regulator with a resistor to dump the power the IC isnt using. (the resistor should handle a bit more power than the peak the ic can consume just to be safe).br />Maybe its a bit more complicated but at least its not a 20W heater inside a case. This board had a 2W resistor which suplied the charger circuit for some 4V SLA batteries that powered the leds strips.KKeith Whitehead 2018-11-15T07:33:07.000ZWait, you are using green wires for something other than earth, and the VFD has a male plug on it to connect it to the Hakko... I would have used some 4 core flex too rather than individual wires cable tied together. Otherwise an interesting design.JJean Paul Aliaga 2018-10-29T15:40:30.000ZAwesome video and technical and enginering information!!! Thank you for sharing. Is there a replacement part or something equivalent for the MOS-FET APT5022BNFR? I tried buying, but many electronic manufacturers do not carry it or it seems that is an obsolete part or no longer being made. I am trying to develop a VFD learning kit for students at my college. Thank you.JJ Bearss 2018-10-26T21:39:43.000ZWell I must say that was really cool, Over the years I have souped up many things but never a piece of bench equipment. that got me thinking, I have a small drill press (AKA) a harbor freight nightmare it's too slow to drill PCBs and I'm considering building a unit like yours but the question comes to mind, why not just a frequency doubler inside the hako unit? I do like the stock plug option! So as I understand this a bit more the external power will not supply any voltage out unless the opto is triggered. So that would mean that the original voltage supplied to the motor inside hako unit is used to signal the external power supply, Nice they work together or not at all. Another cool design! Love your videos!MMonel Funkawitz 2018-10-22T23:16:09.000Za href="https://www.youtube.com/watch?v=mEiUt56elAw&t=10m50s">10:50/a> He says dooty cycle. Uhh huh hhuhh huh.... dooty.MMorris Goldin 2018-10-07T14:14:46.000ZDo you mind sharing how much this project cost and where you sourced parts?AAndrew Gems 2018-09-28T18:33:10.000ZExcellent tutor! I learned more in 4 of your radio alignment videos, and how to use my dust collecting oscilloscope than I ever did in years before! Thank you so much, you are very eloquent and informative. I never get bored with anything you present, and never saw two hours or more go so quickly! I am a subscriber to your channel because you put so much interest in other people learning from you, and felt I owe you at least that much!PPaul R 2018-09-01T05:45:54.000ZWhen changing the speed of an AC motor it is better to change the voltage along with the frequency to speed up or slow down a motor. Higher frequency means the voltage needs to be higher, and a lower frequency means a lower voltage to the motor.PPacero 2018-08-11T22:43:07.000ZI`ve seen a VFD, on a Brazilian Electric Shower Head, made only with a Dimmer and a Triac.BBeach&BoardFan 2018-08-06T03:12:40.000ZCould this be scaled up to run say a 3hp motor?