The Surface Conduction Electron Emitter Display [SED] is almost similar to a CRT, and hence is easier to explain when compared to a CRT display. Although a CRT display is huge and heavy, the picture quality, viewing angle and also visual artefacts are very much appreciable. Â But, when the combination of the picture quality of […]
Description. A lot of electronic circuits using NE555 timer IC are already published here and this is just another one.Here is the circuit diagram of a police siren based on NE55 timer IC. The circuit uses two NE555 timers ICs and each of them are wired as astable multivibrators.The circuit can be powered from anything
Description. The circuit diagram shown here is of a Hall Effect switch. Hall Effect sensor IC DN6848 from Panasonic is the heart of the circuit. The DN6848 has a built-in Hall Effect sensor, Schmitt trigger circuit, power supply regulator and temperature compensation circuits integrated to a single chip. High sensitivity, low drift and excellent temperature
Before going to the depth of this article, there are a few basics that you should know. Especially, about the exact working of electricity. Electricity mainly depends on three parameters. They are voltage, current and resistance. These three parameters are related to each other and a proportional change occurs to these parameters, when a change
When a person is buying a product, he always tries to buy the best one, available at the most affordable prices. This is where the proble starts for both LCD and Plasma displays. Both of them are equally good displays with some advantages as well as disadvantages. Let us compare both of them with respect
The basic of any television is the Cathode Ray Tube [CRT]. We have been using this technology for the past 75 years. But there are a lot of disadvantages for a CRT. The display lacks in clarity, Â and the size of the screen is huge. They become bulkier in size with the increase in screen
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
