Such a nice basic tutorial. And the output looks very stable so good feedback! Keep up!
@Mateo-vl3zv
6 жыл бұрын
Electronoobs i see that another channel i subscribed to is here too 😊😃
@1337PANDA
6 жыл бұрын
Both of you just uploaded the video
@ihabhamad8290
6 жыл бұрын
you and he very important channels on youtube thanks a lot
@shutdahellup69420
6 жыл бұрын
Need a dispenser here! no puns intended lol
@TheSupertecnology
6 жыл бұрын
Holy... fist I saw Afrotechmods comment, and now you too? Damn is KZitem heaven
@Hasitier
6 жыл бұрын
I like this new series. Why go the easy way if there is a difficult one. Shows really good why just using a micro is so much better. Go on with the great work. Greetings from Dresden. Michael
@PsiQ
6 жыл бұрын
I always recommend taking a look at the joule-thief ( BigCliveDotCom ) and/or the pr4403 / pr4402 (and similar) for some interesting and easy projects around boost circuits which can recycle/use old batteries.
@northshorepx
6 жыл бұрын
An old school Great Scott electronics video -always a treat when the Patreon feed fires :-) May I ask about the ramp function please? Why not a sine wave there? Isn't it easier to create a sine wave oscillation? Hope this is not too dumb a question.
@greatscottlab
6 жыл бұрын
Since the feedback needs to be linear we have to use a triangle signal.
@vylbird8014
6 жыл бұрын
A sine would result in nonlinear feedback. It'd sort-of-work, but output voltage stability would be poor. To work properly you need a triangle or a ramp.
@grantgiesbrecht2236
6 жыл бұрын
To address your other question, sines can also be trickier to make. Triangle waves are very easy to make with a relaxation oscillator. Sine waves require a little more effort, enough so that many function generators instead filter a triangle wave into something similar to a sine rather than generate the actual thing from scratch.
@vylbird8014
6 жыл бұрын
Really good triangle waves are difficult. You need to do things involving a constant current source. But unless you're making something that needs a really precise triangle/saw wave (an oscilloscope perhaps, or CRT display), a relaxation oscillator is a close-enough approximation.
@RexxSchneider
2 жыл бұрын
@@vylbird8014 The oscillator used in the circuit (see 6:02 ) charges/discharges the 10nF capacitor with a constant current via the 1K resistor which has either +2.5V or -2.5V across it, That's because the 1K resistor is driven by the rail-to-rail (0V to 5V) square wave from a Schmitt trigger and the other end of the resistor at the inverting input is kept at the same voltage as the non-inverting (around +2.5V) by opamp action. It's the really good triangle wave you're looking for.
@kornelillyes2848
6 жыл бұрын
This is offically the first episode of "WCCCWMBUTDNMWLS" aka. the "We can create circuits without a microcontroller but usually that does not make a whole lot of sense!" edit: this comment is the first episode of "We can create long and complicated acronyms but that usually does not make a whole lot of sense!"
@ahmedelwan9129
6 жыл бұрын
HAHAHAHAHHA
@ljfaag
6 жыл бұрын
We can create pointless answers to more or less pointless comments but that usually does not make a whole lot of sense!
@kornelillyes2848
6 жыл бұрын
ljfa We can create a copypasta out of a joke GS made, but it is usually even less sensible and funny than the original joke so it does not make a whole lot of sense
@reggiep75
6 жыл бұрын
So largely like hand building a car long after autonomous assembly lines were introduced!? Damn that's so retro hahaha! One thing I really do like about this channel tho is a MASSIVELY RELEVANT SPONSOR that doesn't have to be sold to the viewers as it's 100% relevant to the content! You are saluted for a good sponsor!
@sayantanmaiti2513
6 жыл бұрын
Bro...the feedback method impressed me a lot!!!! I really loved the method by which you designed the feedback.. A nice, decent and cheap approach
@camilienbeaudoin7907
6 жыл бұрын
6:35 is that magic smoke ? :D
@kaiserindustries5567
6 жыл бұрын
6:35 you said it works, but i saw in the background smoke 😂👍🏻
@generalbutz8477
3 жыл бұрын
Soldering iron?
@ishigamiyu1991
3 жыл бұрын
@@generalbutz8477 a dying component
@Metroid1890
3 жыл бұрын
My hopes
@stevejagger8602
Жыл бұрын
“We can create circuits without a micro-controller....” in my case this is my natural choice because thats where I started in the mid to late sixties. From my perspective, starting with analogue design gives you more understanding of circuit theory and signal processing. Often when you are beginning a new design you have to research to gain the fundamental understanding. Putting those building blocks together in discrete form gives a better understanding of what works and what doesn’t and starting point for experimentation and optimisation. That is what I enjoy most in watching your videos. I gain a new or better understanding.
@__MINT_
4 жыл бұрын
We should use microcontrollers for such a simple circuits only, when we don't have other solutions for that. You can easily build the boost converter using 555 timer, an optocoupler and tl431 or a zener diode. I have built one and it was as simple as the microcontroller version. Building the boost converter on discreet transistors is also possible. You just have to make a multivibrator, connect it's output to 2 transistor mosfet driver, make a feedback with tl431 or a zener diode and a transistor, and modify the resistance of one of the base resistors in a vibrator with it. Just add a paraller transistor to that resistor and you're done.
@janek4913
6 жыл бұрын
Great video - btw. it does make sense, because when using an uC you need a programmer, computer, etc and also its not available everywhere and little more expensive and harder to replace when broken (reprogram, needs the code etc)
@MrJason005
6 жыл бұрын
on what device did you watch this youtube video?
@janek4913
6 жыл бұрын
android phone, why?
@DoomRater
6 жыл бұрын
A programmer's job is to get fired as quickly as possible. Put another way, a programmer should be looking to have the project done so he is not needed- a programmer is an automator. If your code needs reprogramming later on, either your needs changed or it wasn't done right the first time!
@abdulazeez.98
6 жыл бұрын
PolskaDojczland You have a good point. But I (as an electronics hobbyist) usually prefer the programming approach, I feel it's easier to test and debug, especially if you come from programming into electronics. But I noticed that the hardware approach is somewhat more "robust" than microcontrollers.
@janek4913
6 жыл бұрын
Abdulaziz Salam - For a hobby project you can use whatever parts that you have and want, but for professional use a standalone ic would be used - a uC is just too unreliable, not "robust" enough as you mentioned. But both approaches are valid, i just wanted to clarify it DOES make sense to use only ICs, because in the video he wrote it doesnt make sense.
@yucelkucukcirkin4252
6 жыл бұрын
this the type of content that I want to watch please continue doing things without microcontroller.
@dnorby6990
2 жыл бұрын
I finaly made one with only one analog ic and some pasive components and a tl432 and 817c opto and its more stable and efficient than you'd think.
@sajalsnanda6209
10 ай бұрын
Can u send the circuit diagram of it please
@UpcycleElectronics
6 жыл бұрын
Lol,, let's kiddingly complain more! ;)) Why are you using these newfangled IC-thingys? Real men build their boost converters out of discrete transistors!! ...or so I've been told... *buys 5 converter modules on AliEx for $0.99 like everyone else Personally, I usually grab an old phone type car charger with an MC34063 and put the original components in a boost configuration. Then I simply change the feedback resistors to set the voltage. It's not a clean voltage rail or capable of serious current, but it works for powering a relay or something like that with around 12-15 volts from a 5v supply. I don't worry about the inductor size or anything like proper SMPS design. Just throw it on super cheap perf board and hide it in the back corner of an enclosure. I've never used a uC though. Thanks for the upload ;) -Jake
@meowcula
6 жыл бұрын
LOL no way, tubes!
@czmik
6 жыл бұрын
Relay logic is the only way!
@thewolfin
6 жыл бұрын
Very impressive, but can you do it using only passive and electromechanical components?
@UpcycleElectronics
6 жыл бұрын
Wolfin Heck yeah!!! I ball George Jetson style. *Button push + Button push + Button push = boost. You can call my thumb *Mr Mosfet* Sir. Good day! ;))
@moth.monster
6 жыл бұрын
Real men build their boost converters using only a pencil, tin foil, and a razor blade
@rahulkushwaha1984
6 жыл бұрын
Please demonstrate current mirror.
@IrishSkruffles
6 жыл бұрын
uC are very handy, but they suck compared to dedicated IC's (and the discrete component method too).. For DCDC converters, a high switching frequency is sometimes very desirable. With uC's the PWM frequency is often too low or if it can be increased, the discrete steps that the duty cycle moves in is absolutely rubbish for maintaining a decent output voltage.
@somejoe7777
2 жыл бұрын
In addition to that mentioned disadvantage (quantized PWM steps that a microcontroller supplies), a much larger problem with using a microcontroller is that you cannot tune the feedback loop for high gain and high speed. Designing a proper feedback loop for an SMPS is the hardest part. Using a microcontroller will work, but the microcontroller will respond very slowly to output voltage changes, often taking hundreds of microseconds or even milliseconds to bring the output voltage back to the design voltage after a transient. This is unacceptable in most applications. An SMPS using a dedicated SMPS controller IC can be designed to bring output voltage back to the design value in single-digit microseconds for voltage-mode control, or down into the nanoseconds for current-mode control. In this circuit shown in this video, the error amplifier looks to have a gain of around 1 (10K input resistor, 10K feedback resistor). While that will indeed be stable, the output regulation will be very poor (several tenths of volts or whole volts of change with a load change).
@skrame01
6 жыл бұрын
Word of advice: You need to use flux so you don't get the sharp spike tails when you re-solder anything to a joint. Use a syringe of flux paste and apply it Every time you solder anything. Joints will be much better and it's easy to do.
@electron-1979
6 жыл бұрын
Stephen Kramer Yea, paste or liquid flux is really helpful!
@0x8badf00d
6 жыл бұрын
I think he has bad solder. The flux core in the solder is usually enough in my experience.
@thekamakaji
6 жыл бұрын
I bought PCBs through JLC and was super happy with the price and the quality. Thought I'd lyk!
@thekamakaji
6 жыл бұрын
I had looked into ordering custom pcbs before but they were all too expensive. JLC actually is reasonable somehow
@punpck
6 жыл бұрын
Nice tutorial - but I wouldn't recommend the microcontroller version either ... Use a simple MC34063 for this task :) A step-up / step-down normally does more than just adjusting the PWM ... They have some safety circuits built in - for instance limitting the current through the coil and mosfet ... A year ago (or so ...) I used the cheap MC34063 as boost converter for 50W LED (12V to 48V @ 1A) which worked quite nice and it is cheeeeeap :)
@davestorm6718
Жыл бұрын
temperature compensated, too!
@vincentstuchly8021
6 жыл бұрын
Awesome second part of We can create circuits without a microcontroler, but usually that does not make a whole lot of sense! series. I really enjoyed every minute.
@rodrigo_dm
6 жыл бұрын
now that i watched i wanted to ask you GreatScott: why not use a single chip quad opamp that is rail to rail like a OPA4342 or a LMV324?
@shangen2783
6 жыл бұрын
Rodrigo D Madruga you could
@MCSGproject
6 жыл бұрын
maybe he just had other chips on hand, nbd either way
@araibirshad8294
6 жыл бұрын
I think the uC approach is usually preffered by hobbyists and non engineer people coz learning to code is easier than studying the analog design methodology and creating a solution around it. The applications of hobbyists do not usually require the level of efficiency that should be present in industry standard engineering design so this approach is usually easier and just werks. I may be wrong here but that is just my opinion. Also mixed signal design like a mcu controlled boost converter is tougher to design to strict tolerances than analog design of the same topology. Atleast it is to me. Great video btw !
@electron-1979
6 жыл бұрын
A I Yea, probably
@MarterElectronics
6 жыл бұрын
Intro music is bartlebeats - 2011 Lookalike
@rohandabir1588
6 жыл бұрын
Your videos are so nice that i watch them three to four times
@tunahankaratay1523
5 жыл бұрын
Can't wait for the fpga version.
@Darieee
6 жыл бұрын
The drawing is superbly done !
@grillpig3860
6 жыл бұрын
Yes but thats also possible without op-amps! I want to See you make this circuit with Basic components! (Transistors, mosfets, capacitors and resistors) XP
@researchandbuild1751
5 жыл бұрын
Radio Shack used to sell a book "build Switching power supplies" i have one, shows how to build using basic components. I built one back in the day to step 12volts up to 30 with 100watt capacity, using a single IRF510 as the switch along with a high speed diode and a toriod. The control was a 555 timer
@tejav1160
5 жыл бұрын
You could've have used TL494 IC which does both Gating Pulse generation and feedback. Works flawlessly.
@derknistermann5613
6 жыл бұрын
I suggest building a decoration Binary Counter and showing how these work! They are interesting and useful after all.
@anonymousyoutubemember
3 жыл бұрын
His way of teaching is awosome.
@noobulon4334
Жыл бұрын
This is an excelent follow up project to my pwm generator using a dual opamp as a relaxation oscilator/comparator
@hjups
6 жыл бұрын
I think you made that way more complicated than you had to. Whenever I have built boost / buck converters for projects, I typically use a PMIC which if you do the calculations in the datasheet correctly, will end up needing fewer parts and no potentiometers. Alternatively, you could try using TI's Webench tool, which lets you put in your input voltage range, output voltage range, and output current (it automatically detects boost / buck), and then will give you a list of specific value parts for different designs with various efficiency curves. While the main PMIC would be a TI part, you can usually find comparable parts from other manufacturer's which don't require component value changes. Also, all of the webench designs are SMD based, so they give you a recommended compact PCB footprint for the converter, though you should be able to do the same thing using perf board and THT components.
@jamest.5001
5 жыл бұрын
Irresistorible!! I wish I got into this when I was younger, its hard to teach a old dog electronics!!
@__dm__
6 жыл бұрын
I have a feeling with good design regarding the PWM frequency, output filter and loop compensation, you'll get a boost converter that has a better loop response compared to the microcontroller design, so that's one reason to use the analog version.
@Wezlite
Жыл бұрын
hello sir, I want to know what component is that which looks like a mosfet but has a slight indentation in the corner, and is pin 4 and 8 of the mcp602p opamp connected to another power source?, if so how can you connect it with only one input voltage (boost in ). I want to try to make this circuit. Thank You
@bhoopathis9660
6 жыл бұрын
Really you are great Scott. You are making great videos and also you are a inspiration for many peoples including Me😍
@basiledavanna2532
6 жыл бұрын
Hi sir.Your pcb works are outstanding.super soldering.
@tiger.98
6 жыл бұрын
I think that we learned a lot more here, since real boost converters are made like this. Semplicity isn't everything. And let's be honest, if I NEEDED a boost converter i would buy one anyway, building one is not for pratical use. More, I and other people find complicated and/or analog projects a lot more interesting, since electronics are not (only) coding. I Hope that you change your mind about not-mcu projects.
@iblesbosuok
4 жыл бұрын
Circuit around U1.2 need to be configured into integrator amplifier. Take out R8 and replace R10 with capacitor which has 10mS with R9. Cheers from Indonesia
@benjamincrall8065
6 жыл бұрын
Please continue this series!
@ernestuz
6 жыл бұрын
The MC34063 is extremely cheap and, with just a few components, make very nice boost converters.
@hubmartin
6 жыл бұрын
I would suggest newer switchers. The old 34063 has bipolar switching transistor with all its inefficiencies.
@electric_mix
4 жыл бұрын
Very nice
@amalmjames2884
6 жыл бұрын
I just thought about building a boost converter you are awsome🔥🔥🔥
@MaxintRD
6 жыл бұрын
If you want to build a simple miniature boost converter using the MT3608 chip and only a few passive components, you can find a video about it on my channel. Have fun building your own!
@amalmjames2884
6 жыл бұрын
Maxint R&D thank you
@giacomo1191
6 жыл бұрын
Nice, it would be interesting a comparison of the ripple and noise voltage between the two versions
@willyou2199
6 жыл бұрын
add negative feedback from the output back to the input, put an opamp comparing the output to a stable reference voltage, let the op amp output control the duty cycle.
@Michael_Michaels
6 жыл бұрын
Dude, lend me some of your knowledge!!! It's impressive!!!
@m.palanisamy5212
6 жыл бұрын
U can use lm 358 dual op amp ic instead of using separate op amp
@DolezalPetr
6 жыл бұрын
very cool, more projects without a microcontroler please
@th3d3wd3r
6 жыл бұрын
Boost converters intrigue me. I run an electric bike with a 100v battery pack. How can you boost to those sort of voltages to charge the pack? Conversely, how can you buck from 500vdc down to 100vdc, enabling the use of EV fast chargers? This is becoming a much discussed topic in the high power ebike world. Especially for motorcycle conversions. A lot of chargers that do this are available, most are from china, so I question the claimed specs lol
@dharmakissoon
3 жыл бұрын
great vid friend, can you please show me how to make an adjustable input and out put current limiter? thanks
@i.apilado
6 жыл бұрын
Finally! Without using the microcontroller
@electroideas3255
5 жыл бұрын
Thanks for the idea with the tl431 transistor to get a stabil 2.4v ,nice video!!!!!!!
@f.a3202
3 жыл бұрын
if you don't want to use a microcontroller you can use a pwm ic like the tl494 sg3525 and so on. the only problem is the frequency. they can't really get to more than 150kHz
@MCSGproject
6 жыл бұрын
Making circuits out of bare bones discrete components makes a lot of sense in a lot of applications. It can be a lot cheaper, and a lot more impressive to put on your resume. Firmware exp. also nice tho
@ProfessorFartsalot
6 жыл бұрын
Hey GreatScott! Great video! Can we get a tutorial for making a 12 volt power supply that would power a computer? I know its very ineffecient and would drain a standard SLA battery too fast and it'd be easier to drive one from an inverter, but I think it'd be interesting to see how many boost and buck converter stages you'd need to do it. Edit: I should specify, for a desktop computer, so ATX power. Maybe for an older machine since most modern computers require a lot of power?
@electron-1979
6 жыл бұрын
SirDovahBearYT You would be better off replacing the ATX supply with a 12 to 12, 5 and 3.3 volt supply/converter.
@rohitpathya4284
6 жыл бұрын
Hi scott, can you make video on xl6009 or lm2577 step up switching regulators with external mosfet or transistor for more current..
@yalgret
6 жыл бұрын
I like no uC videos!! Solder beats c++ !
@user-yw8sr3uj1w
4 жыл бұрын
Try to make the linux kernel in hardware. Yeah thought so
@yalgret
4 жыл бұрын
@@user-yw8sr3uj1w No uC, beats deploying a raspberry pi running GNU-Linux just to turn a light on and off or something.
@thebluemarauder
6 жыл бұрын
This was very cool and informative! That said when in doubt just use the MC34063A. It's stupidly cheap and works like a champ, even on a breadboard!
@rolandberendonck3900
4 жыл бұрын
But you cannot connect a Mosfet with that IC as far as I know.
@ohmslaw6856
3 жыл бұрын
You know what else doesn't make sense? Climbing Mt. Everest.. but it's still an amazing accomplishment
@aleksandermasluk3507
6 жыл бұрын
I like the new series title.
@PerKroon
6 жыл бұрын
Even if building a Boos Converter without a Mocricontroller "... does not make a whole lot of sense!" it was rather educational to watch. It's sometimes hard to realise how easy Microcontroller makes life sometimes.
@JonLeeCon
6 жыл бұрын
When's the next addition to the series lol. Nice video
@Cambpictures
6 жыл бұрын
And then there is me. I just buy them... Btw to you other guys. I can recommend JLCPCB. The circuits are dirt cheap but looks like a million! We use the circuits for power supply monitoring and after receiving the first 10, bought 50 more the same day and got them 20 days later.
@saulo5216
6 жыл бұрын
Using MCUs or "common ICs" for that stuff is usually a waste of time, as there are tons of ASIC for that application already, but I think you already know that, because you even showed us one of them. Either way, nice video.
@MrTest-dc8je
Жыл бұрын
Hello Sir, Why you didn't use the "555 timer ic" as a Square Wave generator. To control the mosfet
@rahul-fl2zc
4 жыл бұрын
@GreatScott! you design a compensator only a differentiall amplifier and with gain of only 1. How your circuit is giving correct output corresponding to feedback i didn't understand. please check voltage output from feedback.there must be offset between set value and output you are getting because it is only proportional controller with gain of 1. Also designing of better compensator is good such as pid. For better response and stability.
@michaeltimothy9046
6 жыл бұрын
As usual your projects are great but would like to see u do something different plz dont add no adriuno or rasberry pie lets see something different plz thank u
@shivashankar28
5 жыл бұрын
Yup i highly recommend that too
@kriskeersmaekers233
6 жыл бұрын
Without a microcoulomb?? Woah
@ConnorNess
6 жыл бұрын
Does GreatScott have a video discussing whether or not to use a MOSFET driver IC as opposed to just driving with PWM?
@oniruddhoalam2039
4 жыл бұрын
Yes, in his video about MOSFET as a switch.
@ArtaxXP
6 жыл бұрын
Hey there ;) It would be awesome if you could show, how to mod a cheap 12V DV to 230V AC converter to output a pure sine wave instead of a modified sine wave. Keep up your great work!
@jemand771
6 жыл бұрын
I like the title of this series
@alexloktionoff6833
2 жыл бұрын
Just one NE555 + TL431 could be enough! Of course NE555 would not provide 'pure' PWM, but it could do the job. Taking in account the price of NE555+TL431 vs ATTINY it might have a sense. Especially if TL431 salvaged from dead PSU/charger.
@avejst
6 жыл бұрын
Thanks for sharing 😀👍 Nice project, well done 👍😀
@ahmedsiddiqui9515
5 жыл бұрын
In schematic you used 4 opamp( 6:03 ) but in final setup you used only 3 opamps ( 8:02). Why and which one you eliminated ?
@RexxSchneider
2 жыл бұрын
The MCP602 has two opamps in an 8-pin package, so the three 8-pin packages you saw at 8:02 comprised two dual-opamps and a mosfet driver (TC4420). The TL431 is in the TO-92 3-pin package and the two TO-220 devices are the MOSFET and (I assume) a 5V regulator to supply the MCP602s.
@ArvindRao33455
4 жыл бұрын
Whats that blue thing you were tuning with your screw driver and the voltage level was changing
@willgower
6 жыл бұрын
What is the name of the connector at 6:31 that pinches a wire? I am looking to buy one for a multimeter.
@electron-1979
6 жыл бұрын
William Gower Good question!
@endothermicexothermic4051
5 жыл бұрын
you have a clear diagram, good drawing!!
@nsfa19
6 жыл бұрын
I'm a huge fan. You're the man!!
@BillySugger1965
6 жыл бұрын
Nice explanation. However I would argue with the basic premise that microcontrollers are usually the best way to control power circuits. If control bandwidth is important, along with high switching frequencies, then most microcontrollers will limit circuit performance. And a carefully designed and laid out PCB solution with an integrated power controller is by far the best solution. But for a simple circuit, with simplistic control strategies, it may be easier to implement and adjust with a microcontroller. For example, I would be interested in the transient response of your ATtiny based circuit against the 99c integrated solution, particularly voltage overshoot (which might damage a load) when load current instantaneously drops by 50%.
@greatscottlab
6 жыл бұрын
I think I should have said it differently. I think uC are easier to use for small DIY projects. Not commercial power electronic products.
@Loundre3
6 жыл бұрын
That reminds me, you can also use the serial interface of the microcontroller to set the voltage/current limits or other parameters.
@andrewzuy6012
6 жыл бұрын
Great video! Could you make a tutorial of using DDS or PLL chips?
@AnOrangeECat
6 жыл бұрын
What a brand new long series name
@b10s
6 жыл бұрын
I like this new series :D please, make more... and keep the name :D :D
@jakobkatrasnik8684
3 жыл бұрын
I have a question. How to bust up dc 0,18 V to 65 V? And very efficient. I need to power up a 32,5 mW load with thermal pads with warmth of a hand. of course only for a few second or so.
@revimfadli4666
5 жыл бұрын
What about making another one based on the MT3608 or the like? Would that make sense?
@LEO-xo9cz
5 жыл бұрын
So a Buck converter stores the current in a capacitor instead of a coil?
@gromosawsmiay3000
3 жыл бұрын
Good work, you used operational amplifiers, next project please use only transistors ;-)
@MrFlexxip
6 жыл бұрын
what about battery desulfator ? do you have any ideas or circuit using regular 555 or pic microcontroller ? are they worth to build ? please make a video about that desulfators
@matthiashertz3768
6 жыл бұрын
Can you make a video how to calculate the components for a boost converter? I want to build one from 1.5 to 4.2v with about 300mA. I found some calculators, but have no idea what I have to enter for e.g. ripple voltage, etc. Maybe you can help me out.
@broboard9658
6 жыл бұрын
in your next video can you create a distortion pedal effects for guitar or other similar guitar pedal effects? its fun
@RobynTapps
6 жыл бұрын
Ok so how do i use the attiny to boost 12vac to 600vac with out using a big ass transformer? Trying to build a small tube amplifier but having trouble finding a supply for the plate voltages that will fit in my enclosure.
@marmathic9874
6 жыл бұрын
Wouldn't it be possible to just trigger a pulse of defined length at the MOSFET gate everytime the output voltage falls below the desired voltage? The off-time of gate-signel would just be the time it takes for the output voltage to fall below the desired voltage again (dependend on the load).
@vylbird8014
6 жыл бұрын
You've just invented the low-drop-out voltage regulator. You can indeed do that, but then you won't get continuous current flow in the inductor, which means your efficiency plummets.
@roman65536
6 жыл бұрын
Scott, did you tried Proportional control using uC ? This may help avoiding overshooting/undershooting when load changes more quickly. As far I remember, it was back then incremental/decremental. Would be cool thing to try ;)
@hadinossanosam4459
6 жыл бұрын
Could you just eliminate the triangle wave and comparator and just use the error-IC's output as the input to the MOSFET (using the inevitable oscillations of the whole system to balance it)?
@erlend1554
6 жыл бұрын
Can u explain the differences an similarities of negative voltage and ground
@rutaElectronics
6 жыл бұрын
yes we stay creative, and we will see you next time!
@javiescribanofernandezpabl6254
4 жыл бұрын
Why the voltage from the output increases when you put the load? Shouldnt it be the same?
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