tag:blogger.com,1999:blog-6338993703407602171.post8991968695817755313..comments2024-03-28T10:59:16.533-07:00Comments on Tahmid's blog: Sine Wave Generation with "Fast PWM Mode" of AVR - using ATmega16Tahmidhttp://www.blogger.com/profile/09117804893438710050noreply@blogger.comBlogger142125tag:blogger.com,1999:blog-6338993703407602171.post-84346311341434816842021-09-18T11:17:21.778-07:002021-09-18T11:17:21.778-07:00Hi Tahmid, congratulations on the projects.
I'...Hi Tahmid, congratulations on the projects.<br />I'm implementing SPWM with 16F877a and with low input voltage (15Vdc) I can sine wave without difficulties but when I raise the voltage to 185Vdc the wave becomes square.<br />Please where am I going wrong?Anonymoushttps://www.blogger.com/profile/18129692254620283882noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-61434638287900867772019-03-07T19:45:22.465-08:002019-03-07T19:45:22.465-08:00Sir here you have told implementing SPWM using FAS...Sir here you have told implementing SPWM using FAST PWM and 16 bit timer but what about implementing the same SPWM using 8 bit timer and PHASE CORRECT PWM. Basically I want to know what all changes need to be done while implementing the same scheme using 8 bit timer in PHASE CORRECT PWM mode i.e. how many times the TBL_POINTER_SHIFT will right-shifts the TBL_POINTER_NEW and how do we store the 8 bit values instead of 16 bits. Hope you would reply.<br />Thanking You in Anticipation.<br />R.G. Shendre<br />(rajnishshendre123@gmail.com)Rajnish26https://www.blogger.com/profile/15109453865405177743noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-27627820481331572962017-09-20T03:52:42.392-07:002017-09-20T03:52:42.392-07:00Can these be implemented for high load systems suc...Can these be implemented for high load systems such as 3KVAAnonymoushttps://www.blogger.com/profile/00334289047876345522noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-83904113788262669202017-09-12T10:33:57.138-07:002017-09-12T10:33:57.138-07:00How to find in H-bridge spwm inverter live and neu...How to find in H-bridge spwm inverter live and neutral ?.Anonymoushttps://www.blogger.com/profile/05033968724711073193noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-20208138149767003492017-04-09T09:09:30.060-07:002017-04-09T09:09:30.060-07:00what should be changed if i use a 8MHz crystal
what should be changed if i use a 8MHz crystal<br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-32327974260125807152017-02-13T01:02:02.323-08:002017-02-13T01:02:02.323-08:00I also need closed loop feedback for sine wave inv...I also need closed loop feedback for sine wave inverter using atmega 16 if you found plz contact me on whatsapp or on facebook<br />whatsapp:+923087456767<br />ahsan aliAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-7813557888011506812017-01-06T20:23:59.476-08:002017-01-06T20:23:59.476-08:00Thank you very much Tamid. May your knowledge incr...Thank you very much Tamid. May your knowledge increase. I w have read your codes and will try it. At least your explanation shed the light on how to handle htese microcontrollers.Anonymoushttps://www.blogger.com/profile/01861633056626943278noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-28482736741434430942016-12-03T12:08:24.244-08:002016-12-03T12:08:24.244-08:00Hi Mr. Tahmid
Thank you for that information
And i...Hi Mr. Tahmid<br />Thank you for that information<br />And i want ask you about feedback issu.<br />I made inverter circuit with feedback<br />But when put load 200 watt the output voltage down .<br />Why?Anonymoushttps://www.blogger.com/profile/07621274439876317835noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-6453217824261633802016-11-04T02:46:48.655-07:002016-11-04T02:46:48.655-07:00Ok got it,,,Ok got it,,,Anonymoushttps://www.blogger.com/profile/06262690249224168730noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-14561383576099837342016-11-04T02:44:03.656-07:002016-11-04T02:44:03.656-07:00Hi Tashmind,,,,
It was a very good explanation...Hi Tashmind,,,,<br /> It was a very good explanation you havev provided.It was very helpful.It will be greateful if you explain me the line<br />"unsigned char FlagReg;<br /> #define Direction FlagReg.B0"<br />Anonymoushttps://www.blogger.com/profile/06262690249224168730noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-63531004241130280272016-09-21T21:13:28.594-07:002016-09-21T21:13:28.594-07:00Hi Tahmid, What is problem If I replace IR2110 by ...Hi Tahmid, What is problem If I replace IR2110 by IR2101 or 2106?Anonymoushttps://www.blogger.com/profile/02892545685138493003noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-59023673722939611172016-09-09T00:05:15.998-07:002016-09-09T00:05:15.998-07:00good afternoon, Tahmid. Can I ask whether you have...good afternoon, Tahmid. Can I ask whether you have made an example on how to generate three phase spwm for an inverter with a fixed frequency? for example: a fixed output of 60hz. Thank you.. I am hoping for a replyAnonymoushttps://www.blogger.com/profile/06429749356236440003noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-52554308041432705812016-08-29T07:11:13.773-07:002016-08-29T07:11:13.773-07:00Dear Tahmid
Your postings on power electronics an...Dear Tahmid<br /><br />Your postings on power electronics and awesome.It is helping lot of people including myself to understand.<br />Can you please help me to monitor voltage, current and frequency of SMPS circuits with circuit diagram and code for AVR or PIC.<br />Thanks<br />VinoAnonymoushttps://www.blogger.com/profile/08995483141314495373noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-34238909809589876652016-08-29T07:11:13.164-07:002016-08-29T07:11:13.164-07:00Dear Tahmid
Your postings on power electronics an...Dear Tahmid<br /><br />Your postings on power electronics and awesome.It is helping lot of people including myself to understand.<br />Can you please help me to monitor voltage, current and frequency of SMPS circuits with circuit diagram and code for AVR or PIC.<br />Thanks<br />VinoAnonymoushttps://www.blogger.com/profile/08995483141314495373noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-14589276660831767852016-07-25T12:35:11.792-07:002016-07-25T12:35:11.792-07:00I was revisiting the site and I know it's been...I was revisiting the site and I know it's been over a year since I posted the above comment. I just thought I should mention that the code I posted worked perfectly for my inverter and I got an A on my project. So yes, it works.Anonymoushttps://www.blogger.com/profile/09404623255253581819noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-91065945830674715102016-03-07T21:49:52.534-08:002016-03-07T21:49:52.534-08:00Hello..Kindly send me the code for SPWM using AVR ...Hello..Kindly send me the code for SPWM using AVR Studio 4 for atmega 8 microcontroller @ gourabagrawal@gmail.com. Thanks in advance.Gourab Agrawalhttps://www.blogger.com/profile/03802016618485000201noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-75022859101138970732016-03-04T03:35:15.587-08:002016-03-04T03:35:15.587-08:00how to get sine wave, is it external crystal then ...how to get sine wave, is it external crystal then how to enable external crystal in proteusHeena Mundrahttps://www.blogger.com/profile/02764041231409098475noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-80399962310836673532016-03-04T03:32:56.918-08:002016-03-04T03:32:56.918-08:00on which PIN sin wave is generatedon which PIN sin wave is generatedHeena Mundrahttps://www.blogger.com/profile/02764041231409098475noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-63526636827674886012016-02-04T06:12:28.462-08:002016-02-04T06:12:28.462-08:00Salem Tahmid
j'espère que tu vas bien.
je suis...Salem Tahmid<br />j'espère que tu vas bien.<br />je suis un Doctorant en électrotechnique, j'ai une réalisation à effectuer dont elle comprend une partie de programmation d'un microcontrôleur PIC.<br />depuis longtemps je suis ton blog, car il est intéressant et tu est aussi un vrai connaisseur dans le domaine. Alors, j'espère que tu vas m'aider à réaliser mon travail, car j'en ai vraiment besoin de ton aide. Si tu acceptes de m'aider fais moi un signe de OK, sinon je te souhaite une bonne continuité dans tout les cas. Amicalement. Anonymoushttps://www.blogger.com/profile/15000597480874502064noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-25761582573307541742015-12-14T22:01:25.937-08:002015-12-14T22:01:25.937-08:00hi dear i need to shift sine wave this code i can ...hi dear i need to shift sine wave this code i can chang the frquncy and amplitude ,but i neet to shift output sine wave tnks for help Anonymoushttps://www.blogger.com/profile/08276851922795897594noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-13734815250389897762015-12-06T19:08:10.584-08:002015-12-06T19:08:10.584-08:00Arduino programming looks intimidating at first to...Arduino programming looks intimidating at first to someone who has little experience with it. But honestly this level of programming is at the undergraduate level. If you pull up the microprocessor datasheets and look up and diligently study the Arduino tutorials on the PWM modes, interrupts, and timer/counter registers, then study this for about five hours a day; even a total novice should be able to grasp the above code and write their own in about 1 week (if you include the debugging which is probably half the work).Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-78763590262729763472015-11-27T22:51:09.273-08:002015-11-27T22:51:09.273-08:00Hi mr thamid. Thanks for great explanation
How ca...Hi mr thamid. Thanks for great explanation <br />How can i implement feedback for this atmega 16Anonymoushttps://www.blogger.com/profile/03017300976562393527noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-87859899151328845312015-11-14T18:32:29.164-08:002015-11-14T18:32:29.164-08:00Dear Sir,
I have been doing research on your blog ...Dear Sir,<br />I have been doing research on your blog for a long time but it is hard to comprehend the programming concept in PWM generation. It is an elite thinking material. By the way, i was successful in building the inverter with push pull technique but it appears to have alot of distortions.<br />If you could allow me to show the pics, perhaps we could discuss further. Merajhttps://www.blogger.com/profile/07392087891380710474noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-92113940151475899182015-10-25T10:17:01.248-07:002015-10-25T10:17:01.248-07:00Dear Tahmid,
After I understood your code, I wrote...Dear Tahmid,<br />After I understood your code, I wrote my own to drive two MOSFETs to connected to a 12 - 0 - 12V @ 5A transformer. I first got 390VAC at the output without any filter and when I put a 100nf filter I got around 160VAC without load. when I put load, say a 20W CFL, the voltage drops to 50VAC. If I drive two MOSFETs via push pull configuration what secondary voltage transformer will I need? supply voltage 12VDC and MOSFETS are driven via an optocoupler PC817Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-13685759261550157862015-09-28T04:49:04.943-07:002015-09-28T04:49:04.943-07:00Arachnid,
Well done with the arduino sketch!
Com...Arachnid,<br /><br />Well done with the arduino sketch!<br /><br />Compiling perfect.<br /><br /> Chemcoolwebhttps://www.blogger.com/profile/06999284545145099481noreply@blogger.com