SElabs tech blog

     We were covered in  http://achhikhabre.com/kaushik-hazarika-sohoj-electronics-make-in-india-make-in-assam/ Who made the case ?  Well I have handmande every case . Used strongest resin glue for front panel .  The cabinets have  a screwless look and sleek feel . Here is a real image :   Many months of research for low cost inverter has given proven results . As I approached the poor to deliver 11-12hours of full light via a inverter the response was phenomenal . Faults issues and more fixes ......... Do the inverter have issues ? yes as of now 2 issue exist 1)if there is heavy spark at load the backEMF  fries the low cut chip 2)no load voltage shoots to 400V so may fry few LEds but is the bulbs are secured they are not of that big concern  , the mass delivery version will have the fixes for these .

About TL431   : The TL430, was introduced as an adjustable shunt regulator in 1976 by  Texas Instruments. The TL431 was created as an improvement to TL430 with better accuracy and stability and was called a precision adjustable shunt regulator. The TL431 was announced as a future product in 1977 and launched in 1978 The TL431 is a three-terminal adjustable regulator series with a guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between VREF (approximately 2.5 volts) and 36 volts with two external resistors These devices have a typical dynamic output impedance of 0.2Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excel lent replacement for zener diodes in many applications. Lets use the voltage calculator tool: Link :  http://www.electronics2000.co.uk/calc/potential-divider-calculator.php

Open up a television or a radio and you'll see many parts that it's built around a printed circuit board (PCB): a bit like an electric street-layout with small circuit components (such as resistors and capacitors) in place of the buildings and printed copper connections linking them together like miniature metal streets. Circuit boards are fine in small appliances like this, but if you try to use the same tricks alike to build a complex electronic machine, such as a computer, you quickly hit a snag.  So to get the  best of the small space IC or  integrated circuit Lets learn how to get the pins to follow a circuit diagram  This is 555 EGG timer  it will shut off egg heater after time delay or it will BUZZ  Lets  find the  pins of the IC !  555timer টোৰ পিন দেখাইছো , কাত তোৰে বাওঁপিনে ১নং পিন ... তাৰ পৰা ২,৩,৪... একে দৰে CD4017(runing led IC) টোত পিন দেখিবা link: http://www.electronicecircuits.com/wp-content/uploads/2010...

BITCOIN electronic 'CRYPTO'currency সেই টকা পইচাৰ মুদ্ৰাৰ সলনি বিতকইন আহিছে .... ইয়াৰ বাবে কোনো বেংক নাই কোনো দেশৰ চৰকাৰ কন্ত্ৰল নাই সেইবাবে ইয়াক পঠাই দিওতে  টেক্চ হিচাবত কনমানো কাত  নাজায় । Why know about bitcoin ? The digital money trade is steadily heading towards immersion in the North American and European markets. One of the significant drivers of the market has been opportunity from keeping money wallet from hidden taxes and easy to open and keep up a financial balance that is fast raising . The immature managing an account framework in Asia and African market, conversely, fundamentally higher development chances to digital money exchanging stages. While a considerable measure of digital money trade organizations done recent quarter on more immersed Western market, the push to promote bitcoins in Asia and Africa obviously after that wannacry event . ১লাখ টকা বিতকইন এবছৰ আগৰ এতিয়া ৪লাখ হৈছে recent reports AUG -OCT :  1bitcoin =1.81Lakh rupees (...

Many  features of note8 that pushes IPHONE 8 tobe a failure. In india the iphone8 sales and bookings registered too low, they blame it on iphone x. But reality is lack of innovation . The basic nerve of all new  smartphone buyers rests on innovation . The  cell markets are flooded with better players in android  arena. The samsung note 8 is a stunning example . Following are some new innovations that note8 has come up with which makes apple device a thing of the past :  Infinite display : as they promised a stunning looking screen innocation .  camera innovation : 12MP cameras on the back that both feature Optical Image Stabilisation.  Additionally, the two sensors also feature Samsung’s Dual Pixel technology and Phase Detection Autofocus. App innovation : pair of apps can be launched together,This feature opens both the apps in split screen mode, allowing you to do two tasks faster than ever before. The deXdock : The dock caters full sc...

লওঁতে ৩০০০টকা ভৰিব  ( ১৩৯৯/- এফেক্তিফ প্ৰাইচ মানে 3year refund আদিত চেভ হৈছে বুলি কিবা হিচাব)  ৩ বছৰে ৬০০০টকাৰ ৰিচাৰ্জ কৰিবই লাগিব  তাৰ পিছত ১৫০০/- ঘুৰাই দিব          কিন্তু একাউন্তলৈ নহয় ! পেমেন্ত ৱালেতলৈ হে  JUST TWO REASONS NOT TO BUY IT 1) JUNK KARBONN MOBILE  Really looting 6000Rs for a bad karbonn phone .karbonn is a bad cellphone company . many defects in all devices  . They have tied to airtel to dump waste model to desi ciustomers .  প্ৰথম হৈছে ফন কোৱালিতি  ই কাৰ্বনৰ নিম্ন মানৰ হেন্দচেত ... কিবাকে ৪জি কৰিছে । কাৰ্বন সকলো ফন লাখ দিফেক্ত ওলাই কম্পনি বন্ধ হৈ পৰিব ওলাইছে ।  ১গিগাহাৰত্জ(1Ghz cpu) প্ৰচেচৰ ফন বোৰ ডাস্টবিনলৈ পেলাব ধৰিছে ...

ceiling fans have a rotational energy that is wasted ... a feewsmalle magenets and coils can be used to extract that . say we can extract 3watts from 70watt fan .... that three watt is good for 7hours in SOHOJ LED lamp ( visit our group files section)

SAMSUNG GALAXY NOTE  - ফুতি জুইলাগিছিল .... এতিয়া আইফন ৮ (latest iphone 8)  কেনেকে? ৭ দিন হোৱা আইফন কেইটা বেতেৰী ফুলি কেচ খোল খাইছে ...  টকা গল পানীত ? সময় কব  বেতৰী ফুলা ২ টা কাৰন  হ'ব পাৰে  -- বেতেৰী দিফেক্ট বা চাৰ্জাৰৰ ইলেক্ট্ৰনিক প্ৰব্লেম   বেতেৰী ফুলি বিস্ফোৰনও হব পাৰে  NEWS link :  https://www.macobserver.com/news/iphone-8-plus-battery-swelling/

                                          Arduino Board                                          Arduino processor board :সকলোৱে বনাব পৰাকে সৰলকৈ ছফতৱেৰ লিখিব পৰা এক প্লেতফৰ্ম মানে শিকিবলে ব্যৱহাৰ কৰা সজুলি    আ পোনাৰ ল'ৰাক কালিৰ সুদক্ষ ইন্জিনিয়াৰ কৰিব বিচাৰিছে , আৰদুইন আনি দিয়ক ..  ই এক বৰ্দ য'ত আপুনি  একা সৰু ৮-বিট প্ৰচেচৰ মগজু প্ৰগ্ৰাম কৰা সকলো সজুলি আছে , ইয়াত ৯ ভল্ট বা USB(5v from pc /laptop)ত চলা সুৱিধা কৰি দিছে ।  USB CABLE ৰে পোনতে লগাই প্ৰগ্ৰেম লদ কাৰিব পাৰে  Ready library programs super easyকে তৈয়াৰ কৰিছে যাতে স্কূলৰ লৰাইও বনাই শিকিব পাৰে...

The bluetooth speaker is a very popular  item among young generation  and there are 1 million varieties. It is  device with inbuilt Amplifier  Batterycharger and battery  wireless module  MP3 USB SDcard module   color LED driver Power control circuit The components that are AMPLIFIER ,  SPEAKER DRIVER , CASE  etc really make the sound very good or worse .  - Look for reputed but not too expensive brands  - Look for a real decent sized one , although small will look cute but sound will not be great for sure   an attractive but bad sounding speaker is as below -NEVER  buy seeing PMPO ! its is a fake rating even philips and sony use that -if secifications available see wattage , a 4-5watt speaker is recommended   We have listened to speakers that were priced in 1200-1700Rs and found the following very well made with good audio quality . ZOOK series : ELITE is one nice s...

১)আইফন সদায়ে ৩ পৰা ৮গুন বেছি দামত এৰে , -  মানুহৰ মনত চাপ পেলোৱা মাৰকেতিং  - সদায়ে আইফন "Future in hand " আনিছে কয়   ১-২মাহতে  সেই টেকনলজী সকলো মবাইলত পায়  ২) কেবল , চাৰ্জাৰ ২-৩ গুন দাম - অৰিজিনেল কেবল কাতিলে ১৪০০/- মানত হে উন্নত কেৱল পাব , -  সেইদালো ৫মাহত কাতিব পাৰে ... Android data কেবল ২০০ /-   Expensive Screen LCD  - ভাগিলেই ধৰক ১০০০০/- ১৫০০০/০ দিব সাজু থাকক ।   এন্দ্ৰইদৰ  স্ক্ৰিন সহজতে ৪০০০/-ত পায়েই ।   তাৰোপৰি আইফন স্ক্ৰিন ২-৩টা নকল কোৱালিতি আছে গতিকে পৰিলেই   শেষ  আইফন !  ৩) "একো ডা উ নলদ কৰিব নিদিয়ে" Download songs  মাৰক linkনাপায়  All songs must be paid or downloaded via iTunes .Free ones are new comer artist songs and  with limited variety  ৪) কোনো mp3 off line music  app or not good quality like android apps নাই তাৰ মানে সকলো প্লেয়াৰে দাতা...

সহজ ইন্ভাৰ্তা্ৰে ৩০০মিলি হে লয় চাৰজ হবলে .. তাৰ মান .৫ মেগাৱাত হলৈ মোৰ মতে ১ক গাওঁ বেকাপ দিব দিগদাৰ নাই তাতে পিক' কৈইটা নানা জান জুৰিত পাৰি বহাব === সহজ ইন্ভাৰ্তাৰ বিষয়ে জানিবলে ... ইয়াত   link-MAkeINAXOM Article মেক ইন অসম ৰ ধাৰনা দিছোঁ , পঢ়ি চাব  === মিনি টাৰবাইন প্ৰকল্পসমূহে (tiny Hydro-power Plant) অতি কম খৰচতে ০.8ৰ পৰা ৫ কিলোৱাট electric power উৎপাদন কৰিব পাৰে। এই শক্তি 2খন সৰু গাওঁ বা এটা চুবুৰিক পোহৰ কৰিবৰ বাবে হৈ যায় । এনে প্ৰজেক্ত নেপালত চলি আছে সফলতাৰে ! (ফ্ৰিজ, হিটাৰ আদি নাই বুলি ধৰিলে)।  কোনো বান্ধ বা কৃত্ৰিম জলাধাৰ নাই বাবে পৰিবেশৰ ওপৰতো মুঠেও কুপ্ৰভাৱ নাই। মেৰামতি, পৰিচালনা আদিৰ খৰচো যৎসামান্য। এনে পিক’ জলবিদ্যুৎ প্ৰকল্পত ১.৫ৰ পৰা ৩.৫ মিটাৰ ব্যাসৰ এটা ক্ষুদ্ৰ টাৰ্বাইন আৰু পানীৰ সোঁতত আৰু ০.৫ ৰ পৰা ৫ কিলোৱাট ক্ষমতাৰ এটা সৰু জেনেৰেটৰেই যথেষ্ট। আমাৰ অসমত অলেখ সৰু সৰু নদী। একোখন গাওঁক কমেও ১ কি.মি. হলেও চুই যাই এখন নদীয়ে। নৈ-পৰীয়া প্ৰতিখন গাওঁত এনে পিক’ জলবিদ্যুৎ প্ৰকল্প ৪-৫ টা ...

আপোনাৰ নজনাকে বহুত বিল কৰি আছে কাৰণ ফ্ৰীজ thermostat -১৫ ডিগ্ৰী মানত থিক কৰা থাকে,ই বৰফৰ চেম্বাৰটো মনিতৰ কৰি থাকে যদি বৰফ দৰকাৰ হোৱা নাই কিয় এক্স্ত্ৰা বিল দিব ? Note: Thermostate এ ফ্ৰীজ compressor অন অফ কৰে ইয়াক লগাই -1 degree মানত Adjust কৰক , বহুত বিল বছাব পাৰিব সহজ ইন্ভাৰ্তাৰ tubine concept বিষয়ে জানিবলে ... ইয়াত    link-MAkeINAXOM Article  মেক ইন অসম ৰ ধাৰনা দিছোঁ , পঢ়ি চাব 

Cleaning your house is one repetitive work that your wife does , maid does but now robos will do that. It is not new technology but it is becoming fast popular ....these robots have special features  ৰবটে ঘৰ  চাফা দিব পৰা হৈছে ...  পত্নীৰ কামও কৰি দিব .. এইবোৰ ভাৰতএমাজন ত for sale  দিছে ....  ইয়াত ভেকুৱাম , জাৰু , অটমেতিক চেনচৰ , ৩৮০০মিলি বেতেৰী আদিৰে ফিত কৰি দিয়ে । ই নিজেই ৰুমত ঘুৰি ধুলি লেতেৰা চাফ কৰিব ।  নানা মদেলত মবাইলেৰে কাম দিয়া ব্যৱস্থাও  কৰি দিছে !  ই বেতেৰী কমিলে নিজ চাৰ্জাৰলৈ নিজে যায় ....  কেতামান অসুৱিধা  -  চুক কান নোৱাৰে চাফ কৰিব , - লেগ বা চকী বেছি থকা জেগাত নোৱাৰে ,  এক ৰুমত ১ক ৰবত...

Xiaomi Mi Mix  was reportedly an initial concept phone . However , with the huge interest and praises it received , the tech giant decided to make it part of their consumer line . The borderless concept of the Xiaomi Mi MIX has huge attraction . People  wanted more screen not much speaker grills and this peaked the interest for the said gadget .  The Xiaomi Mi MIX is not 100% borderless , but among all the gadgets in the market right now , it is the leading one when it comes to aspect ratio display . With a whooping 91 .3% of display space , Xiaomi Mi MIX boasts of an almost all-screen display gadget .  Xiaomi Mi MIX : How the sound comes out without speaker holes  Well we all hold the cell close to our ears .and here the ceramic drive plays it part এই ছামি মবাইলত কোনো স্পিকাৰ নাই কেনেকে কাম কৰে ?  ইয়াত পিজো দ্ৰাইভ আছে , ই নিজ বদিকে স্পিকাৰ কৰি অদিঅ দি...

squelch detection circuit : making walkie takies .. it will mute the hiss sound and allow only clean audio when recieved ধৰক ৱাকি তকি এতা বনাই গাৰ্ল ফ্ৰেনক দিলে অন কৰাৰ লগে লগে চৰচাৰাই নইজ আহিল তেনে হলে তো নহব , প্ৰিয়জনৰ মাত সাৰৰ বাহিৰে বাকী নইজ (no transmission)কাতি দিব এই চাৰকিতে A nice walkie : https://www.youtube.com/watch?v=y08ygGQronM author  dint gave circuit ------ Engineer Fresher jobs Job title :  Manufacturing Engineer I New College Graduate - (E1)-1704901 Company :Applied materials http://www.appliedmaterials.com/ Description : Manufacturing Engineer I New College Graduate - (E1)-1704901 Apply email :  info_india@amat.com Java IVR Developer Job title : Manufacturing Engineer I New College Graduate - (E1)-1704901 Company:Infosys India Software Description : • Bachelor’s degree or foreign equivalent required from an accredited institution. Will also consider three years of progressive experience in the specialty in lieu o...

Tips what will help make a good image a great image in cell phone are topic of today . Following you must observe : Check to keep off the shadows that sunlight makes on subjects. ( ছাঁ পৰি ৰোৱা ছবি বেয়া হয়  )  Place the reflective light off buildings. (লাইত ৰিফ্লেক্ত কৰা সামগ্ৰী আতৰাই ৰাখক, যেবে কিবা চিলভাৰ কালাৰ বেগ , আইনা ) Practice during the "golden hour. "  shortly after sunrise or before sunset ( পুৱা ৰঙচুৱা ৰ'দ বা  গধুলি সুন্দৰ হৈ পৰে সকলো ফটো )  Find how the light from a window falls within a room.(খিৰিকিৰে লাইত কোন দিশে পৰিছে তাক  চাই লব ভাল ফতো হব) The smart telephone is not the very best in little light situations( কম লাইত মানেই ফতো বেয়া ) .  Dont ever use the zoom on your smart phone.( জুম কৰিলেই কোৱালিতি বেয়া হয় কাৰন সফ্...

you said Joule Thief?  you said Joule Thief?  It’s a little wisp of a circuit that allows you to drive aPOWER  LED from a low voltage. Normally, if you want to light up a blue or white LED you need to provide it with 3 – 3.5 V, like from a 3 V lithium coin cell. But the magic of JT is  a 1.5 V battery like a AA cell simply will work.  Easy make  Joule Thief,  works like a charm. Not only does it work with a brand new battery, but it works until the battery is nearly dead– down to 0.3 V.  That’s well below the point where your other toys will tell you the battery is dead, so it can steal every last joule of energy from the battery (hence the name). how about a cellphone charger , yes it is doable , we are here to give you  a usable tested diagram . get  the ring toroid from a OLD smps of pc ! 

------ Engineer Fresher jobs Job title :  Manufacturing Engineer I New College Graduate - (E1)-1704901 Company :Applied materials http://www.appliedmaterials.com/ Description : Manufacturing Engineer I New College Graduate - (E1)-1704901 Apply email :  info_india@amat.com Java IVR Developer Job title : Manufacturing Engineer I New College Graduate - (E1)-1704901 Company:Infosys India Software Description : • Bachelor’s degree or foreign equivalent required from an accredited institution. Will also consider three years of progressive experience in the specialty in lieu of every year of education. • At least Training JAVA  experience with Information Technology Manufacturing Engineer I New College Graduate - (E1)-533525 Apply email :  jaa_barta@infosys.com

Vivo V7  Vivo Electronics Corp. is a phone brand based in Dongguan, Guangdong, China. It was founded in 2009. The company is another Chinese smartphone maker but this one spends more on dealer commission and IPL  To make the markets flooded with choices , they sale too many models .  Do you know vivo and OPPO are same cell companies .  Avid indian buyer  gets confused .  Vivo  tries to copy flagship product samsung/xiaomi  but it fails there are lots of segments  But to market the  vivo guys have many many  online comparision of OPPO Vs VIVO  1. Snapdragon 635 which heat phone very fast 2. Still screen resolution is low 3. Ram is low 4. No direct video call 5. Battery capacity low for that price  6. Camera focal lens is poor 7. Camera pics are over processed in software , look unnatural