We cannot think of a world without batteries. We use batteries for our everyday use like mobile phones, digital cameras, remote controls and so on. But still we cannot tolerate the fact that these batteries die with time. They may have to be either replaced or recharged. Some of them are even heavy as well […]
Flash Memory We use our computer hard disk to store all our files including documents, photos, PDF’s, MP3’s and so on. But, there are cases where you will need to store information in a much safer platform than your hard-disk. A device which can be carried around and can be easily interfaced with your PC
 Resistors Resistors are considered to be the most used and the most important component of all the electronic circuits. Take a look at the working, types and also use of resistors in the field of electronics. We know that the basic idea of any electronic circuit is the flow of electricity. This also is
Description. When the amplifier is switched on, the speaker gets popped up by a high voltage and you can hear a loud thud sound from the speaker. This stuff is very harmful to the speaker and it drastically reduces the speaker’s life. The circuit shown here connects the speaker to the power amplifier output only
Have you ever thought of having a high-definition TV that is bigger than your usual LCD display, and that consumes only half the power of an ordinary one? What if you could easily roll the TV and pack it up so that you can use it for a trip? Yes, this is possible with the
Description. This is the circuit diagram of a two channel audio line driver using the high performance dual opamp IC TSH22 from ST Microelectronics. The 25 MHz bandwidth, low distortion and high output current of the IC makes it possible to drive medium impedance loads at a high level of modulation. Here both of the
Description. This is of course the simplest electronic code lock circuit one can make. The circuit uses one transistor, a relay and few passive components. The simplicity does not have any influence on the performance and this circuit works really fine. The circuit is nothing but a simple transistor switch with a relay at its
Description. Here is the circuit diagram of a passive DX bass circuit that can be used with almost all audio amplifiers. This circuit is designed by Mr. Emmanuel Chipula (emmanuel@windowshoppingmalawi.com) from Malawi and was sent to us for publication.We tested this circuit in our lab and the result was fine.Full credit of this circuit goes
Description. This lead acid battery charger circuit is designed in response to a request from Mr.Devdas .C. His requirement was a circuit to charge two 12V/7AH lead acid batteries in series.Anyway he did not mentioned the no of cells per each 12V battery. The no of cells/battery is also an important parameter and here I
There are posts on the working of relays, types of relays and so on. To know about them click on the links below. TAKE A LOOK : WORKING OF RELAYS A contactor is also a type of relay. Although they have been explained in earlier posts, their wide use and significance needs to be explained
Description. Here is the circuit diagram of a simple subwoofer filter that can be operated from a 12V DC supply. Such a circuit is very useful in automobile subwoofer applications. The circuit is nothing but a low pass filter whose pass frequency can be adjusted between 60 to 160 Hz. The circuit is designed around
Types of Relays In this article, the different types of relays like overload protection relay, solid state relay, solid state contactor relay, Buchholz relay, Mercury Wetted relay and many more are explained with diagrams. . In my earlier post I have alreaady explained the working of relays, and their design and construction. TAKE A LOOK
Relay Working In this article, the basics of a relay like energized relay and de-energized relay are explained in detail. Also, the design, construction, working, applications, and also relay selection is explained in detail. What is a relay? A relay is an electromagnetic switch that is used to turn on and turn off a circuit
Nowadays, people do not carry money for shopping. Instead, they carry an automated teller machine card, also known as ATM Card. When money is needed they go to the nearby ATM machine, insert their ATM card, and take the required amount. As these ATM machines are found in most of the supermarkets, towns, and even
Description. Here is the circuit diagram of a very simple wire loop alarm based on a N-channel enhancement FET 2N700, a buzzer and few passive components.In normal condition the gate of 2N700 (Q1) is connected to the ground through a 100K resistor (R2) and the wire loop. When the wire loop is broken , Q1
Digital cameras are mainly classified according to their use, automatic and manual focus, and also price. Here are the classifications. 1. Compact digital cameras Compact cameras are the most widely used and the simplest cameras to be ever seen. They are used for ordinary purposes and are thus called “point and shoot camerasâ€. They are
I have already described about the working of a camera. Almost all the basics of this post have been explained there. Now let us know more about a digital camera, its working, and also advantages. The digital camera can be considered as an alteration of the conventional analog camera. Most of the associated components are
Since posts on Charge Coupled Device and CMOS Active Pixel Sensor have already been posted, it is time to know their comparison, advantages and disadvantages. Though both of them are equally used in cameras, there are some differences in parameters like gain, speed and so on. Comparison – Charge Coupled Device and CMOS Active Pixel
Active Pixel Sensor (APS) is an image sensor, made up of an array of pixel sensors. In these pixel sensors, each pixel sensor consists of a photo detector and an amplifier. Out of these APS, the most notable is the CMOS Active Pixel Sensor (CMOS APS). CMOS APS has great applications in cameras and also
Charge Coupled Device (CCD) – Definition CCD was developed in the year 1969 by Willard Boyle and George E. Smith at AT & T Bell Labs. It is a shift register device which can be used for the movement of electrical charge within the device. This movement can be from one area of the device
The chip design includes different types of processing steps to finish the entire flow. For anyone, who just started his carrier as a VLSI engineer has to understand all the steps of the VLSI design flow to become  good in his area of operations. There are different types of design procedures for analog/digital designs and
Description. The circuit diagram shown here is of a automatic changeover switch using IC LTC4412 from Linear Technologies. This circuit can be used for the automatic switchover of a load between a battery and a wall adapter.LTC4412 controls an external P-channel MOSFET to create a near ideal diode function for power switch over and load
The work of a camera – photography is considered to be one of the greatest inventions of mankind. It has not only helped us see the entire world through a click, but has also transformed how people conceive the world. They can also be kept as a remembrance for the rest of our life. Camera
Description. Here is the circuit diagram of a 12V boost converter using IC LM2698 from National Semiconductors. The LM2698 is a general purpose boost converter with an 18V, 1.35A. 0.2 Ohm internal switch. This results in high efficiency power conversion to outputs ranging from 2.2V to 17V DC. The input supply voltage range is 2.2V
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