Simple FM transmitter circuit.

admin February 11, 2012 57 Comments
Two transistor FM transmitter. Description. A lot of FM transmitter circuits have been already published here. This just another one, a simple two transistor FM transmitter.The first stage of the circuit is a preamplifier stage based on transistor Q1....
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IMAX – The Giant Step to Movies

john February 9, 2012 No Comments
Let a movie be in 3-D or an ordinary 70mm projection. We have always loved it for the story, sound effects, visual effects, and many other factors. But latest technologies have improved the way in which graphics and other...
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Proximity detector circuit

admin February 14, 2012 9 Comments
NE567  tone decoder / PLL IC. NE567 is a tone decoder IC from Philips. The IC has a built in PLL circuit with AM lock detection and an output driver circuit. The main function of NE567 is to drive...
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Floating regulator

admin February 2, 2012 4 Comments
Floating regulator. Floating regulator is a type of voltage regulator that works without a real ground connection. This is a trick used for regulating voltages higher than the rated value. For example the typical output voltage range of LM723...
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PLL FM demodulator circuit

admin November 21, 2013 2 Comments
PLL FM demodulator. A simple PLL FM demodulator circuit using IC XR2212 is shown here. XR2212 is a highly stable, monolithic PLL (phase locked loop) IC specifically designed for communication and control system applications. The IC has 0.01 Hz...
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Types of Chopper Circuits

john July 27, 2017 12 Comments
In power electronics chopper circuits, unidirectional power semiconductors are used.  If these semiconductor devices are arranged appropriately, a chopper can work in any of the four quadrants. we can classify chopper circuits according to their working in any of these...
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PIC16F84A – Instruction Set (Continued)

Anish June 5, 2012 1 Comment
Having known about the byte oriented file register operation, only two categories are remaining – the bit oriented file register operations and the control operations. Bit-oriented file register operations: Here these instructions are used when a single bit needs...
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Next Generation 3D Holographic Displays

john January 27, 2012 1 Comment
The Hollywood film industry went to a whole new level after 3-D movies like James Cameron’s “Avatar” to the latest “Underworld Awakening”. The perspective of watching movies through a whole new dimension is believed to have brought movie fans...
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Choppers – A general introduction

Arun January 31, 2012 10 Comments
Choppers  A chopper is basically a dc to dc converter whose main function/usage is to create adjustable dc voltage from fixed dc voltage sources through the use of semiconductors. Types of choppers The main classification of the types of...
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PIC16F84A – Instruction Set

Anish June 5, 2012 1 Comment
The instruction set of PIC16F84A has 35 instructions .These instructions are otherwise called Mnemonics. While introducing about the PIC16F84A till the hello world program,  7 instructions are introduced to you which were, BSF – bit...
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MOS – Controlled Thyristor (MCT)

john January 24, 2012 6 Comments
Out of many semiconductor controlled devices, MCT is considered to be the latest. The device is basically a thyristor with two MOSFET’s built into the gate structure. A MOSFET is used for turning ON the MCT and another one...
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PIC16F84A – The Hello World program.

Anish June 5, 2012 2 Comments
The previous posts about PIC16F84A explained about controlling the GPIO(General Purpose I/O) pins of the IC. Previously laid circuits explained only about how to switch on or off an LED. You just simply set the desired pin to output...
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Get Ready to Fire Laser From Your Body

john January 13, 2012 1 Comment
laser cell construction Cyclops, a superhero from the famous comics “X men” has been the favorite of many people across the world. In the story, the character produces powerful laser beams by optical blast from his eyes. This fiction...
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ISP Programmer for ATmega32 Microcontroller

Mathew Kevin July 10, 2017 61 Comments
So far I’ve discussed about the micro controller basics and the compiler software. I’ve yet not written anything about programming. ATmega32 series micro controllers support 3 types of programming   Parallel Programming   ISP Programming or serial Programming  ...
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AVR Studio 4 and 5-Overview for Beginners

Mathew Kevin July 10, 2017 No Comments
For general purpose computers, programs written in one programming language can support different hardware configurations. But things are different for microcontrollers.  Each family of micro controllers have its own unique type of hardware architecture, instruction sets, register configuration and...
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PIC16F84A – Working with Inputs

Anish June 5, 2012 2 Comments
I hope everyone who read the post about programming the PIC16F84A will now be savvy with downloading the program to the controller, and also check the working of the controller. In the previous post, we discussed about producing an...
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2012 Welcomes 3D Transistors!!

john January 3, 2012 4 Comments
3D Transistor A transistor is the fundamental building block of all electronic devices.  .  A transistor can be defined as a device, which is used to amplify signals and power. Integrated circuits are used in making of chips inside...
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Stealth Paint to Make Airplane Invisible

john December 28, 2011 3 Comments
Carbon Nanotube Coating Radar detection has always been the nightmare of military aircrafts. Once spotted in the radar zone, it is easy to destroy the aircraft in mid air by using anti-aircraft missiles. Defense personnel’s across the world are...
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