The mobile industry started their journey with bulky handsets and huge keypads. With emerging technologies they were able to reduce the size and bring in more features. All this has been replaced by touch-screens and smart phones, with better user interface, and great features. As a next step to this evolution, here come smart phones […]
From our childhood days, we have studied that nothing in this planet travels faster than light. It has been defined as the ultimate speed in our universe. This has been backed up by many experiments, tests and measurements in many ways possible. But all these remain as just theories, as a simple neutrino transfer
Doctors have been successful in replacing dead intestines and tracheas, designed by tissue engineers. But, the same process on larger organs has been a little slow as they could not design blood vessels like capillaries that deliver the wanted nutrients to the other tissues. If the nutrient supply is stopped or cut-off at intervals, the
Researchers from the University of Utah were successful in making a wi-fi device that could detect and analyze breathing patterns. This device will not only pave way for cheap and easy breath monitoring systems, but will also help doctors to get a faster and more efficient analysis of patients suffering from breathing problems like sleep
A team of UC San Diego security researchers presented a paper on how your Automatic Teller Machine (ATM) pin code can be stolen using the heat that our fingers leave behind. With the help of a digital infrared camera, the person immediately following you can know the keys you pushed, with 80% accuracy. Frightened?
LM3900 multi-channel audio mixer. A simple multi-channel audio mixer circuit using LM3900 quad amplifier is given below. The circuit consists of 4 channel quad amplifier (LM3900). Two mic audio inputs and two direct line inputs are available in this circuit. By adding the same circuit parallel with this, you can increase the number of inputs
The circuit of an inexpensive and highly secure electronic security system is explained below. This electronic security system can be used in banks and other high security areas. A normal electronic security system will have a transmitter and a receiver. The transmitter sends out an IR laser and this will be received by the receiver.
Solar panels available nowadays pave way for great energy savings and better environmental protection (since the energy is renewable). But solar panels acquire a huge space to install and are really expensive. Only a few countries provide subsidies to build a domestic or industrial solar project. What if a solar film that is a thousand
Since, 1932, researchers have been successful in combining hot fusion with nuclei. Till then the concept of cold fusion was used and did not produce any satisfactory results. The research in hot fusion is still continuing and they have been successful in providing danger-free, very good potential energy source without producing much wastes. Some of
We have already discussed different concepts of high-efficiency computers like Brain-like Computers, which is soon to become a reality. Two researchers at the University of California, Berkeley, Jeffrey Bokor and Brian Lambson are developing a new concept called “Magnetic Microprocessors”. According to them, this new concept would be so efficient that the energy consumed by them
We have already discussed about StunRay Technology and its capability to substitute tasers and guns used in law enforcement. But, there are some limitations to the amount of damage you can do to the suspect if he is not in front of you. That is why tasers are considered more effective as it will
The basic ANALOG TO DIGITAL (A/D) CONVERTER CIRCUIT has already been explained in an earlier post. Apart from it, there are also many types of monolithic analog to digital converters, such as the integrating A/D, integrating A/D with three-stage outputs, and the tracking A/D with latched outputs. In addition to this, the outputs of A/D
The U.S Army is famous for their military gadgets that are used to hunt down enemies and also navigate a battlefield at night. They began by using night goggles. But there were complaints about these goggles for being noticeable by the enemies. Another problem is that they had no way to track their exact location
Germans, who are known for producing the most promising ad efficient mechanical and electrical designs, have lately created the strongest magnetic field in one of their labs. This new development is considered as a new world record and was created by the researchers at the High Magnetic Field Laboratory Dresden (HZDR). For developing such a
We are used to making a closed conducting circuit diagram on PCB’s and Vera Boards. The same process can now be done by drawing on a paper with a silver coloured liquid metal ink. This whole basic process has been named 3-D Handwriting by its inventors – researchers at the University of Illinois at Urbana-Champaign.
Infrared View of NASA Lander We have seen hovering space crafts and missile enabled drones in movies like Star Trek, Avatar, G.I Joe and so on. From these pictures it is clear that such machines can easily stay in the air at a fixed position, just above a few feet from Earth, for any amount
Humans have designed robots for making our tasks easier and simpler. These robots have been used in factories and even at homes as they can work tirelessly everyday and every time and that too without the need of money and food. Till now, no one has ever developed a robot that has the basic
One has seen the beauty of the sunrise and the sunset. Wouldn’t it be all marvellous to have a better view from high above the Earth? Out of the total population on Earth, only a few people have had the luck to get a view of Earth from space. A Canadian company called UrtheCast (the
A new type of high-resolution nanoparticles detector called the “Whispering Gallery Resonator” has been developed by professors at the Washington University in St. Louis. The device mainly consists of a very small laser in the micro-size range along with a sensor that is used to detect the presence of individual viruses and particles in the
Don’t worry if you do not know how to play the guitar. From now on, the “PossessedHand†will play it for you. PossessedHand is a kind of a blood pressure cuff that is strapped onto your arm. This device will pass small electrical signals to your fingers in such a manner that it moves your
We have already seen high-speed computers which can compute and process multiple instructions at the same time. But, there has never been a computer which can work as fast as and also resemble the biological systems of a brain. In a recently published article in the journal “Advanced Materials”, a study about the world’s first
This type of converter is used to convert analog voltage to its corresponding digital output. The function of the analog to digital converter is exactly opposite to that of a DIGITAL TO ANALOG CONVERTER. Like a D/A converter, an A/D converter is also specified as 8, 10, 12 or 16 bit. Though there are many
Earlier, I had explained two DIGITAL TO ANALOG CONVERTERS. Both of them have been designed for four inputs. But, if the number of inputs is more than four, the combination of output becomes more than 16. This makes the circuit more complex and the accuracy of the circuit reduces. Therefore, in critical and complex applications,
A D/A Converter is used when the binary output from a digital system is to be converted into its equivalent analog voltage or current. The binary output will be a sequence of 1’s and 0’s. Thus they ma be difficult to follow. But, a D/A converter help the user to interpret easily. Basically, a D/A
People nowadays use credit and debit cards in order to purchase products. The use of coins for buying small things is fast diminishing and the use of currency notes has become more useful for people. As a part of giving these coins its old fame, the Dutch government have decided to make their coins a
