DIY SPWM generator module || Generate SPWM signal without a micro-controller
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- เผยแพร่เมื่อ 25 ธ.ค. 2019
- This video is an attempt to generate SPWM (Sinusoidal Pulse Width Modulation )signals which is widely used in applications concerning communications and also in pure sine wave inverters.
I tried to make this SPWM module without a microcontroller. The project is built around Operational Amplifiers and works pretty well.
The link to more details on the build and concepts:
www.instructables.com/id/SPWM...
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Feel free to leave your feedbacks, suggestions and questions in the comments section below.
#SPWM #PWM #withoutmicrocontroller - วิทยาศาสตร์และเทคโนโลยี
Good project perfect to me since i don't have idea about microcontroller thank you sir keep up a good work its appreciated.
Happy that it was helpful :)
nicely done!
Thanks!
Well done 👍
Thanks bro
Use trimpot types (full sealed) preset for better calibration
Will do in further projects!
@@UtsavShah_25 Ok nice
can you make a 50hz sine wave generator, and then make one 180° phase shift sine wave using inverting amplifier and then compare these two 180° sine wave separately with triangle wave using two comparators so I can get unipolar spwm to drive h bridge.
Can we vary the spwm output with help of these presets
just found your vid, this is nice explaination, short & clearly - awesome, so it is no need code, right - why use arduino ? I'll watch this vid again & again - learn more about it
thank you !!
Thanks a lot for the feedback and glad it was informative. Do share and subscribe for more such content
Please make a inverter with it
I wanted to make vfd can I use this circuit for H bridge drive
Well you can but since this is a completely analog solution it can have deviation in frequency
It is worth attending, Is it possible to implement this method in sine wave inverter? If yes, How dead time can be generated? please inform me. thank you.
Yes I am trying to implement this for a sine wave inverter and I'm still working on it. Will share the project soon
Can you discuss how it could apply to sine wave inverter circuit
I am working on the application of this circuit to make sine wave inverter. Will soon post a couple of videos on this
@@UtsavShah_25 thank you.
Is the spwm output variable??
Yes the SPWM can be varied by using the potentiometers
is it posible to implement feedback to use in a inverter?
I am working on the design to implement this in an inverter. I will post the project soon
@@UtsavShah_25 ok.waiting for the result
Can I use it for 50 Hz spwm
Yes you can use it for 50Hz. You can adjust the potentiometer value and capacitor value to get the frequency you want
What is the spwm out put frequency
Since it is pure analog circuit, the frequency is not very stable and fixed. I measured it to be roughly 2Khz
@@UtsavShah_25 ok thanks for your response also how do get 50Hz after instead of 2KHz
Any idea how can I make it ??
I have not tried any projects regarding VFDs. In case I find any resources I will mention it.
How to use this to drive mosfets???
You can connect the output signal to a dedicated MOSFET driver. That will be an ideal way to drive MOSFETs with this
@@UtsavShah_25 but this is only one output...how to use to drive flip flop two sections???
This is only one output..for flip flop oscillator for inverter we need two outputs...how to solve this problem????
Getting 2 complementary output in this circuit is difficult. I am working on a modified version for such circuit. Will share updates soon
@@UtsavShah_25 keep it up... all the very best 🌹🌹🌹