obaid1470

Serbian VLF Metal Detector

SURAH-Al-KAHAF-18 by-Mishary-Rashid-Alafasy

My favorite Surah from Quran Kareem http://quranplay.com/mp3/1062/surah-18-al-kahf-by-mishary-rashid-alafasy.html Brief history of Surah https://www.islamiclandmarks.com/jordan/cave-of-ashabe-kahf-exterior

ARDUINO BASED UNINTERRUPTIBLE DC TO DC POWER SUPPLY

Microcontroller based DC to DC uninterruptible power supply belowNetwork of ICs 317 & 7805 limited high DC voltages 60 VDC upto 5 VDC for the whole circuit working.Here 16*4 LCD used , optocoupler 817 used to derive FET ,48 Vdc Relay used , Codes below // By Engineer Obaidullah Khan Kakar 28/2/2018 #include Continue reading “ARDUINO BASED UNINTERRUPTIBLE DC TO DC POWER SUPPLY”

IRANIAN METAL DETECTOR – FelezJoo PI Metal Detector (FPI)

At first glance battery low alarm seen on the screen as if 12v given to detector for this replace R19 value 22k to 18 k. But 18 Volts must be supplied to the detector for proper working. Also can work best on 24 VDC. Video : https://www.youtube.com/watch?v=RlMi2n-AguY complete circuit available at https://felezjooblog.wordpress.com/2017/12/17/felezjoo-pi-metal-detector-fpi/ Check detector performance Click on below

ARDUINO UNO DTMF BASED CAR GPS TRACKER

I think this will be the more reliable GPS car tracker , a cheap tracker which include a cheap old Nokia mobile Set N73 , any smart symbion mobile can be used ,Main features are :1). Get GPS coordinates any time you want.2). Alert when some one open the Car door .3). Can kill engineContinue reading “ARDUINO UNO DTMF BASED CAR GPS TRACKER”

Disclaimer

Many of the circuits published in this blog are not fully tested, but those circuits which are not properly tested may not give the perfect result which is expected, In this circumstances the author cannot be responsible for any loss or damage which may be due to lake of knowledge or ignorance. On the otherContinue reading “Disclaimer”

60Vdc to 5Vdc Convertor ( 60 VDC TO 40 VDC input)

If you want to try to convert high voltage DC to low level up to 5 V , it is hard to tackle such high volt pressure by the normal available regulator ICs in the market , like a 7805 IC which can be use up to 35 Vdc as a input, by increasing theContinue reading “60Vdc to 5Vdc Convertor ( 60 VDC TO 40 VDC input)”

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Privacy Policy for http://www.obaidkakar.blogspot.com. Privacy of our visitors to www.obaidkakar.blogspot.com is important to us. At www.obaidkakar.blogspot.com, we recognize that privacy of your personal information is important. Here is information on what types of personal information we receive and collect when you use and visit www.obaidkakar.blogspot.com, and how we safeguard your information. We never sell your personal information toContinue reading “Privacy Policy”

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SOLAR 12V DC DIMMER Simple

Below mention simple circuit can used as a dimmer in DC range , from 0 to 20 VDC, here a powerful FET were used to deliver much DC Amperes for the appliances ,this Circuit can be easily understand where here we used only three basic (3) parts ,FET gate were kept biased between +VE & -VEContinue reading “SOLAR 12V DC DIMMER Simple”