Electronics, embedded, microcontroller, pic, projects, hobby circuits, circuit, blog, transistor, technology

Cell Phone Controlled Land Rover Using Logic Gates

What's Science for a small child ?At that age, no one of us is aware about the vast branches in science ,yet we are very curious to know.There will be lots of  Why's and How's in our mind which makes the elders irritated.By seeing a toy car,we always get wondered. Without knowing any robotics or electronics inside we just want to make our own toy car with clay and blocks.So its not wrong to say that every child has scientist inside...

What’s Inside an Electrolytic Capacitor?

The aluminium electrolytic capacitor consists of two foils sandwiched between absorbent paper, and wound tightly into a cylinder. The anode, is composed of pure aluminium foil with aluminium oxide formed electrolytically on the surface. The foil has been etched to increase the effective surface area. The cathode is made of high-absorption paper mixed with an electrolyte, in contact with a cathode foil. The electrolyte is used to ensure good contact with the anode, by permeating its etched structure, and also to repair any flaws in the oxide layer when the capacitor is polarised....

Nanowire 3D Transistors Becomes More Compact

A transistor is a very important electronic device which is used to amplify and switch electronic signals. Semiconductor Chip makers started to use 3D Transistors in 2011 to reduce the size and increase the efficiency of chips. They can pack more 3D transistors into a single chip since it is much more compact than traditional planar transistor. The amount of compactness will not be sufficient for future generations of semiconductor chips and to keep the pace of Moore's Law. Thus there is a...

Interfacing EEPROM with PIC Microcontroller

What is an EEPROM ?

EEPROM is an abbreviation for Electrically Erasable  Programmable Read Only Memory and it is a Non-Volatile memory. It is used in computers and other electronic devices to store data that must me saved during no power supply. EEPROM is a class of ROM (Read Only Memory) which can be electrically erased in bit by bit and able to store new data. A small amount of EEPROM (usually 128/256 bytes) is available internally with PIC Microcontrollers. I have already posted about Using...

Servo Motor

Introduction

Servo Motors are ordinary geared down DC Motors equipped with servo mechanism for precise control of angular position. A servomechanism or servo refers to an error sensing negative feedback which is used to correct the performance of a device. Servos are used for precise positioning in robotic arms, legs, RC Aeroplanes, Helicopters etc. Servo Motors do not rotate continuously, their rotation is limited between fixed angles. Usually these motors have rotation limit from 90° to 180° and some special have limit 360° or more. An...

Stepper Motor or Step Motor

Introduction to Stepper Motor

It is a brushless, synchronous DC electric motor, which divides the full rotation into a number of equal steps. It is also known as Step Motor. For example, in the case of a 200 step motor, one complete rotation (360°) is divided in to 200 steps, which means one step is equal to 1.8°. It can take only one step at a time and each steps are equal. The exact position of a stepper motor can be...

Integrated sensors to handle extreme conditions

A team ofengineers has created silicon carbide based amplifiers having applications in both aerospace and energy industries. The devices can take extreme heat even upto 600 degree Celsius.These integrated circuits are designed over a wide-band-gap semiconductor. According to Dr.Garverick, "Most semi-conductors are made out of silicon, but silicon will not function above 300 degrees Celsius, and there are some important applications above that range." So his team started to use silicon carbide,which begins to act as semiconductors at high temperatures. Engineers at...

>