tag:blogger.com,1999:blog-6338993703407602171.comments2024-03-17T09:02:43.004-07:00Tahmid's blogTahmidhttp://www.blogger.com/profile/09117804893438710050noreply@blogger.comBlogger3756125tag:blogger.com,1999:blog-6338993703407602171.post-15282472204432580552024-02-07T01:42:20.226-08:002024-02-07T01:42:20.226-08:00"Welcome back, Mr. Temid! Your insightful pos..."Welcome back, Mr. Temid! Your insightful posts on power electronics in 2017 and 2018 were invaluable to me and many others in the electrical engineering community. Your return to this platform is eagerly anticipated, and I look forward to learning more from your expertise. Thank you for sharing your knowledge and welcome back!"Muhammad Sabirnoreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-54412213861120848672024-01-27T07:24:44.581-08:002024-01-27T07:24:44.581-08:00Thank so much for this. -Emmanuel from Nigeria Thank so much for this. -Emmanuel from Nigeria Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-32638827624508910442024-01-26T20:43:04.354-08:002024-01-26T20:43:04.354-08:00GithubGithubMadhavihttps://www.blogger.com/profile/03043250174335620345noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-66554333747590128442024-01-15T07:34:05.419-08:002024-01-15T07:34:05.419-08:00The details for the programming spec are in this d...The details for the programming spec are in this document: https://ww1.microchip.com/downloads/en/DeviceDoc/41287D.pdf<br />You will need to update the corresponding sections in the code such as the code end region. You may also need to be able to control the VDD supply if using certain config options (VPP-first program/verify mode entry), see Section 3.0 and Fig 3-1 in the document.<br /><br />So, you would add a transistor on the VDD line to do that with another GPIO, which you would do in the enter_prog function.<br />https://github.com/SyedTahmidMahbub/q-dpico_picprog72/blob/5a918e72d2a5b05f3c61767de552f66991e75294/prog72.py#L62C11-L62C11Tahmidhttps://www.blogger.com/profile/09117804893438710050noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-34691291075786104292024-01-15T05:52:07.594-08:002024-01-15T05:52:07.594-08:00Thank you for this! I want to program PIC16F886. T...Thank you for this! I want to program PIC16F886. This supports Low Voltage Mode, which is required if you want to program the chip with an Ardino as ISP. Can I use your method in order to program this microcontroller? Thank you very much. BTW, its datasheet is here: http://ww1.microchip.com/downloads/en/devicedoc/41291d.pdfAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-88857871382459823652024-01-03T11:33:52.823-08:002024-01-03T11:33:52.823-08:00কি রকমের প্রজেক্ট?কি রকমের প্রজেক্ট?Tahmidhttps://www.blogger.com/profile/09117804893438710050noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-31032294518553778082024-01-03T11:33:04.073-08:002024-01-03T11:33:04.073-08:00Do you have a sufficiently sized bootstrap cap? Se...Do you have a sufficiently sized bootstrap cap? See this post on the topic: https://tahmidmc.blogspot.com/2023/12/sizing-ir2110-high-side-bootstrap.html<br />There could be many other reasons - hard to tell without more details.Tahmidhttps://www.blogger.com/profile/09117804893438710050noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-61101428395566137102024-01-03T03:27:42.515-08:002024-01-03T03:27:42.515-08:00It should not be too difficult to adapt the circui...It should not be too difficult to adapt the circuit and code for these specific parts. You can find the corresponding programming guides online. For example, here is the one for 12f675: https://ww1.microchip.com/downloads/en/DeviceDoc/41173c.pdf<br /><br />At quick glance, it seems that for the 12f675, you need to sequence VDD after VPP. So, you would add a transistor on the VDD line to do that with another GPIO, which you would do in the enter_prog function.<br />https://github.com/SyedTahmidMahbub/q-dpico_picprog72/blob/5a918e72d2a5b05f3c61767de552f66991e75294/prog72.py#L62C11-L62C11Tahmidhttps://www.blogger.com/profile/09117804893438710050noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-55649368461088742672024-01-02T10:28:22.372-08:002024-01-02T10:28:22.372-08:00I think these PIC MCU's are commonly used:
12...I think these PIC MCU's are commonly used:<br /><br />12F675, 12F683, 16F676, <br />16F84/A, 16F628/A, 16F72, 16F73Chayan Mistryhttps://github.com/chayanforyounoreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-67224017760939290932024-01-02T09:25:09.565-08:002024-01-02T09:25:09.565-08:00Thanks! It should be pretty easy to tweak the micr...Thanks! It should be pretty easy to tweak the micropython code to add support for more PICs. For some of the smaller PIC16's, you'll probably only need to update the device ID and the ranges for the code and config memory spaces. For newer ones, especially the larger memory devices, the code will have to be tweaked to support extended memory addressing. And even newer parts might have a different programming spec. You can compare this to the programming guide of the PIC16F72 and see what the differences are.<br /><br />What other common PIC MCUs are typically of interest?Tahmidhttps://www.blogger.com/profile/09117804893438710050noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-10660031439344874232024-01-02T07:03:19.294-08:002024-01-02T07:03:19.294-08:00That's really so cool vaiya. Can we do it like...That's really so cool vaiya. Can we do it like PicKit2 or add support for commonly used PIC MCU in this python script?Chayan Mistryhttps://github.com/chayanforyounoreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-22045084177525048932023-11-29T15:52:13.520-08:002023-11-29T15:52:13.520-08:00Hi. What needs to be done instead of using mosfet ...Hi. What needs to be done instead of using mosfet driver, you are to use transformer to drive high side? Can you provide me a schematic diagram?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-91069011770842523462023-11-05T01:29:06.986-07:002023-11-05T01:29:06.986-07:00ভাইয়া মাইক্রোকন্ট্রোলার এবং ইলেকট্রনিক্স নিয়ে প্রো...ভাইয়া মাইক্রোকন্ট্রোলার এবং ইলেকট্রনিক্স নিয়ে প্রোজেক্ট লিখলে অনেক ভালো হতো।Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-70739440541889444792023-11-01T05:20:55.642-07:002023-11-01T05:20:55.642-07:00but you didn't,why waste 2.5 watts on the 56k ...but you didn't,why waste 2.5 watts on the 56k and 1k ? i mean 380x380/57000 is 2.5 watts and 6 mA; not possible to use regular 1/4 watt resistors andlower mAmps ? (sorry,i am a hobbiest,not an elec.tech); greetings fromPortugal...2023 lolAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-8690770061374973882023-10-27T06:30:26.925-07:002023-10-27T06:30:26.925-07:00Congrats vaiya. Best wishes for you. And welcome b...Congrats vaiya. Best wishes for you. And welcome back again. :) Chayan Mistryhttps://github.com/chayanforyounoreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-41831208019615108182023-10-24T10:44:35.073-07:002023-10-24T10:44:35.073-07:00Welcome back Tahmid its really good having your ne...Welcome back Tahmid its really good having your new fresh face Babayanju Davidnoreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-36504574361186397292023-10-14T19:48:34.480-07:002023-10-14T19:48:34.480-07:00Great God Bless you.
Great God Bless you.<br />gireesh kumarhttps://www.blogger.com/profile/05949850589059427365noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-73103815497145583892023-10-01T02:38:42.296-07:002023-10-01T02:38:42.296-07:00Its really good to have you back our friend and am...Its really good to have you back our friend and am here to tell you that we have really missed you allot because through this blog you have helped many of us to understand how things are done the easy way and now since you are back, who knows you may even do a post on Modalities of Using the PIC (16F877A) CCP Module - CAPTURE Section to make this topic of the CCP module complete.Thanks for coming back my friend.Derrick-Prohttps://www.blogger.com/profile/05521761105361234232noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-32220904831808708302023-09-29T02:32:15.543-07:002023-09-29T02:32:15.543-07:00Does mosfet driver HO and LO supply voltage at th...Does mosfet driver HO and LO supply voltage at the same time? Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-81136577608103107512023-09-12T10:51:08.233-07:002023-09-12T10:51:08.233-07:00As'salam o Alaikum!
Congratulation, Tahmid for...As'salam o Alaikum!<br />Congratulation, Tahmid for your PhD. <br />Good to hear you again.Muhammad Saadhttps://www.blogger.com/profile/07108188813086389492noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-65618060130098948852023-09-12T10:50:04.373-07:002023-09-12T10:50:04.373-07:00As'salam o Alaikum!
Congratulation, Tahmid for...As'salam o Alaikum!<br />Congratulation, Tahmid for your PhD. <br />Good to hear you again.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-80946158015013467752023-09-11T02:56:04.275-07:002023-09-11T02:56:04.275-07:00Thank youThank youPriyahttps://www.blogger.com/profile/14783824930246989850noreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-74296083172481689322023-09-06T04:22:20.066-07:002023-09-06T04:22:20.066-07:00Hi engineer.
My high side mosfet isn't turnin...Hi engineer. <br />My high side mosfet isn't turning on. I have checked Rgs, Rds are all okay so not burnt. It's a of the bootstrapping isn't working. What could be the problem? Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-83686793627278876542023-09-05T10:18:33.384-07:002023-09-05T10:18:33.384-07:00Hi there that is very nicely written blog !
i have...Hi there that is very nicely written blog !<br />i have a question that i want to build a inverter using ferrite core transformer by using ETD 44/22/15 N87 Core my input volt (nominal) is 24v (and 20.5v minimum) and my ferrite core has no air gap i plan on to use it on a switching frequency of 50Khz and plan on too atleast obtain 400watt out of it if possible.<br />i have read the datasheet of the core but i dont understand that what is the ( Bmax )value of my ferrite core please tell me what will be the Bmax value of my core it does not have any airgap <br />i want to use the formula mentioned above to calculate the remaining valuesAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-6338993703407602171.post-18210571285592791012023-09-04T23:41:22.304-07:002023-09-04T23:41:22.304-07:00Hi. You are such a gift to engineering. I count yo...Hi. You are such a gift to engineering. I count you as my teacher. Am working on the half bridge based on IR2110 that you posted years back. I have stopped burning my mosfet and the driver but the high side is not switching on. What miffy it be? Pinkertonnoreply@blogger.com