مدونة وسيم الخاير

أرواح حالمة!

هذا هو اسم الفريق الذي أعد مقطع  الفيديو الذي قام بإعداده مجموعة من زملائي في جامعة البترول الحبيبة وذلك تجهيزا لاشتراكهم في مسابقة

Imagine Cup2010 برعاية شركة مايكروسوفت

المقطع:

فلنأكل  سويا

بعد مشاهدتي للمقطع سررت بالجهد الرائع الذي قام به شباب جامعتي وسررت أيضا أنهم -كعادتهم- متميزون على مستويات دولية. وعند التدقيق في المقطع، سنرى أن الإعداد لهذا النوع من المشاهد لا يحتاج إلى استوديو شهير في هوليوود أو معدات بملايين الريالات، بل هو فقط بحاجة إلى أرواح حالمة وعزائم قوية. بعدها بدأت أحدث نفسي قائلا: وسيم..ألا تلاحظ أن هناك مساحة يجب سدها في المجال التقني المرئي..؟

وهنا بدأ شريط طويل من تلك المشاهد التي كانت تصلني عبر بريدي الإلكتروني المليئة بمقاطع اليوتيوب، وهي إما لمقطع ممنوع أوفكاهي أو أغنية أو مشهد غريب..وضعت يدي على مقدمة رأسي وبدأت أفكر..أحضرت كوبا من الشاي لعلي أعدل مزاجي وأرتب أفكاري. حقا إنه أمر يستحق الوقوف قليلا! هل ياترى وظف شبابنا العربي تلك القنوات الإعلامية المرئية المجانية لصالحهم؟ أم أننا لازلنا في مرحلة المراهقة الإعلامية ؟ » أكمل القراءة

يمر الإنسان بتجارب تظهر له أحيانا أن عمق التفكير في مشكلة معينة قد يصل به إلى طريق مسدود، ليكتشف أخيرا أن الحل كان تافها للغاية وأبسط مما تصوره، بل إن طريقة التفكير المعقدة أحيانا تزيد الطين بلة وتعقد المشكلة أكثر مما هي عليه.

قبل سنة تقريبا، كنت أعمل في المختبر، وغاطسا في معمعة الدارات أقوم ببعض الاختبارات، وبينما أنا في خلوتي الإلكترونية، وإذا بأحد الزملاء العزيزين يأتي ليبدأ الحوار التالي:

زميلي: السلام عليكم  وسيم..

رددت عليه: وعليكم السلام..أهلا وسهلا تفضل استرح، كيف يمكن أن أساعدك؟

زميلي: هممممم..لا عليك وسيم موضوعي تافه للغاية لكنه عطلني ولم أصل إلى حل رغم سخافته

قلت له: إذا كنت أنت لم تصل لحل، فبالله عليك كيف لي أن أجده؟ » أكمل القراءة

RJ11

Do you know that almost every house has a free electricity source? Yes that is true!  No bills !

This short post will show you how to find that free secret source and make use of it. But first let me ask you this question: Do you know how a telephone works? If no, please click here for more details.

In summary, telephone lines at homes connect to the telephone network using two wires called Tip and ring. Usually the tip is green colored and the red is ring and these wires are connected to the telephone company and used  for all the communication between  users. They have limited bandwidth and carry  a permanent 48VDC and temporary 40VAC to 70VAC that only occurs when the telephone line rings. Maximum electric current that can be drawn from the wires is almost 50mA,  and both the DC/AC voltages are supplied by the telephone company using special batteries and AC sources. So the DC voltage is available at home 24/7 and AC is only there when your phone rings!

With this in mind, why don’t we use this 48VDC of the telephone network at homes to operate some simple electronic devices?  So can we consider this telephone line as a “free” hidden electricity source? Of course we can! so any house with a telephone line can be used as a free electricity source with some limitations on voltage and current. Remember current is limited to around 50mA and voltage to 48VDC. So now let’s  build a  simple circuit that  converts or limits this voltage to say  5VDC and use it to power a simple LED lamp. Keep in mind that if a telephone rings then a 40-70VAC will occur on the line, so we must protect our DC circuit and convert this AC into DC. Let’s watch this tutorial:

I think the video is clear, it shows  a simple circuit which consists of two main components: a bridge rectifier and a voltage regulator interfaced with a telephone line. These two components will make use of both the AC & DC voltages and power  a LED lamp. Circuit schematic:

Here are some tips:

1. 48VDC  can be changed to a lower DC voltage according to your design using  any voltage regulator . You can use this link to find out more
2. AC voltage will be there when telephone rings, so we should use a bridge rectifier to convert this AC to DC. To buy a rectifier click here
   
3. Safety first!

You can download the full circuit from here: FREE-Hidden-Electricity Circuit and if you want to control devices at home remotely using telephone line then try this link.

To me, this year has been full of amazing new technologies that really hit the ground. Ranging from components like Memoristor and ending with consumer electronics applications like Wireless Power. It’s been really fascinating!

Now what’s next?

Water Powered batteries are here. Yes, just drop some water in it and let the party begin.

I had seen some interesting youtubes covering this technology, watch this one:

and it turned out that the company behind it was Aqua Power System from Japan. Reading more in their profile, the company stated that research on this type of batteries about 18 years ago, where they produced 0.2mA only. Currently, they claim their batteries can produce up to 1.2A!

How does it work?

It works by reaction of water and natural substances such as special alloy like aluminum, magnesium and cupronickel generating electric power by natural chemical reaction.

Sounds interesting!

I can see a bright future for this technology in many fields like: military, medical, consumer products if it was proved to be working perfect as claimed!

Thanks to You Tube!:)

Also Thanks to Make Magazine for their great stuff!

Every time I watch a tutorial or enjoy a clip I thank YouTube team for this great service.  YouTube started becoming a valuable resource for many students and that’s why many US colleges have started publishing their courses using You Tube, check here

The famous Make magazine has published a good series that covers electronic fundamental components like: Diode, LED, Resistor, Capacitor, etc.

I invite all electronic enthusiasts to make use of YouTube and share the good stuff.

See how people turn simple things into excellent machines!

Think smart!

Amazing idea!

This would help smokers to replace their old cigarettes and get rid of this habit, hopefully!

Yes..No more wires, no more mess! Say goodbye to cords and cables. Welcome to wireless world! It’s true and researchers at E-Coupled were able to invent a new technique that enables the user to operate his devices wirelessly without the need of any single cable.

Watch this adv.:

Promising Idea!

To find out more:

http://www.ecoupled.com/