Description. The graphic equalizer shown here is based on the IC LA3600 from Sanyo Semiconductors. LA 3600 is a single integrated single Op-amp, 5 band graphic equalizer IC which is very suitable for applications like portable stereo, radio sets, home theater systems, car audio systems etc. The LA3600 can be operated from anything between 5 […]
Introduction In the earlier 60’s it was discrete logic used by electronic industry. The digital system would look like noodle like maze of wiring between components. Once it is built it will be difficult to do rework on it. Sometimes the designers would forget what they have designed for! Manufacturing such systems was very difficult
Description. Many electronic circuits related to fan speed controlling have been published here and this one is just another approach. The circuit diagram shown here is of 12V DC fan speed controller using the IC LM2941CT which is a low drop out 1A voltage regulator. The IC has a dropout voltage as low as 0.5
To know the basics of Logic Gates and their applications, click on the links below. TAKE A LOOK : LOGIC GATES TAKE A LOOK : HALF ADDER AND FULL ADDER TAKE A LOOK : FLIP FLOPS With the invention of Logic gates, we can design electronic circuits that can simply work as a calculator to
Description. Here is the circuit diagram of an FM remote encoder/decoder using the ICs RF600E and RF600D. These devices are designed to provide a high level of security and operates from anything between 2 to 6.6V DC. Various electronic circuits like remote control systems, remote alarm systems, anti theft alarms etc can be implemented using
Description. When compared to linear voltage regulators the switching voltage regulators are much power efficient. In the case of linear voltage regulators the difference between the input and output voltage is just wasted and for switching regulators there is almost no such wastage and that’s why the switching regulators have great power efficiency ranging up
Before knowing more about the master-slave flip flop you have to know more on the basics of a J-K flip flop and S-R flip flop. To know more about the flip flops, click on the link below. So in this article, we are learning in detail about Master Slave Flip Flops. We will see what
Description. This simple tone control circuit is designed based on the famous Baxendall tone control circuitry. The circuit given here can give a maximum cut or boost of around 12 dB at 10 KHz (treble) and 50Hz (bass). Also, both bass and treble can be independently adjusted. Transistor Q1 (BC109) and its associated components (R1,
Description This is the schematics of a low cost mic mixer that can be assembled from the components in your junk box.This two channel mike mixer is designed for handling high impedance dynamic microphones.Transistor Q1 can be any general purpose pnp transistor like BC177 or BC157B. Resistor R5 biases the transistor while R3 and R4
Flip Flop – Triggering Methods This article explains the basic pulse triggering methods like HIGH Level Triggering, LOW Level Triggering, POSITIVE edge triggering and NEGATIVE edge triggering with the help of symbolic representation. The basic principle of clock pulse transition is also explained. To know the basics of flip flops and its different types click
In this article, let’s learn about different types of flip flops used in digital electronics. Basic Flip Flops in Digital Electronics This article deals with the basic flip flop circuits like S-R Flip Flop, J-K Flip Flop, D Flip Flop, and T Flip Flop along with truth tables and their corresponding circuit symbols. Before going
Half Adder and Full Adder Circuit Half Adder and Full Adder circuits is explained with their truth tables in this article. Design of Full Adder using Half Adder circuit is also shown. Single-bit Full Adder circuit and Multi-bit addition using Full Adder is also shown. Before going into this subject, it is very important to
A digital system is basically a binary world. One where the language is restricted to 1s and 0s. Therefore, to make the best of these 1s and Os, logic gates form the foundation to build a digital system that we know today. Hence, if you are keen on understanding digital electronics, you must be clear
Boolean Logic In this article, the basics of Boolean Logic is explained Boolean Logic or Boolean Algebra is the description of a set of objects using two basic logic’s – TRUE & FALSE. The relation between these two logics is used to figure out the truth of an expression. Boolean Logic is considered to be
We tend to store all photos digitally rather than keeping a hard copy of them. Whenever we need to see them or show it to our friends, we take it from our mobile and show them. All we do is waste more of our digital space. There is nothing satisfactory like watching and enjoying our
Description. The circuit shown here is of a simple 0 to 9 display that can be employed in a lot of applications. The circuit is based on asynchronous decade counter 7490(IC2), a 7 segment display (D1), and a seven segment decoder/driver IC 7446 (IC1). The seven segment display consists of 7 LEDs labelled ‘a’ through
For the past few years fingerprint scanners were considered to be a very costly and high end technology. We have seen it only in thriller and sci-fi movies. But now, these devices have been popping up in almost all places like offices, police stations and also our laptops. You also get to buy fingerprint USB
What is an Amplifier? We see amplifiers in almost all the electronic equipments around us. Though we usually relate them to stereo equipments they are also found in TV’s, computers, MP3 players and so on. All these devices have a speaker which is used to reproduce the original sound. Related Articles WORKING OF SPEAKERS MOTIONAL
Recycling E-goods All homes in this world have at least one electronic device and may be more. Some of them include computers, video games, mobile phones, printers, MP3 players and so on. When you buy a computer for the first time you use it as though it is the greatest gift in the world. When
Nowadays, there are a lot of touch screen monitors available in the market. They are made available in displays for computers, personal digital assistants, mobile phones and video games. A touch screen contains a visual display area which can be sensitive to the touch of our finger or other passive components. A touch screen
A strain gauge is a device that is used to measure the strain that occurs in an object. The device was invented in the year 1938 by Edward E. Simmons and Arthur Ruge. The device is still being used in many electronic circuits mainly as the principle sensing element for sensors like torque sensors, pressure
Description. The circuit given here is designed by Mr.Seetharaman V.S (seethasub@hotmail.com) from Chennai. Seetharaman’s comments about the circuit: This circuit is a modification of High & Low voltage cut-off with delay& alarm circuit appeared in Circuits today, which I have tried and found to be quite reliable. You can adopt this circuit with small modification.
What is a Wheatstone bridge? A Wheatstone bridge is an electrical circuit used to calculate an unknown resistance with the help of a bridge circuit. For this, the two legs of the bridge circuit are kept balanced and one leg of it includes the unknown resistance. The Wheatstone bridge principle is similar to the working of
In my earlier posts I have already explained the working of Charge-coupled devices and its application as an image sensor. Recently, most of the scanners and cameras have introduced a new image sensor called Contact Image Sensors [CIS]. Working of Contact Image Sensor Contact Image Sensor is one compact module consisting of three sub-systems. They
What is a Scanner? A scanner is a device that is used for producing an exact digital image replica of a photo, text written in paper, or even an object. This digital image can be saved as a file to your computer and can be used to alter/enhance the image or apply it to the
