How to Make a Simple Touch Sensitive Switch Circuit

Dec 31, 2011

A very accurate touch sensitive switch can be built using a single IC 4093 and a few other passive components. The shown circuit is extremely accurate and fail-proof. The circuit is basically a flip-flop that may be triggered through manual finger touches.

How to Make a Capacitive Discharge Ignition (CDI) Circuit for Two-Wheelers

The ignition process in any vehicle becomes the heart of the entire system as without this stage the vehicle just won’t start. To initiate the process, earlier we use to have the circuit breaker unit for the required actions.

How to Make a Mains AC Short Circuit Breaker/Protector Circuit

Dec 28, 2011

A short circuit in a house wiring may appear to be something which happens very seldom and folks aren’t too interested to get any relevant precautionary measure installed in their houses and take the hazard very casually. However once in a while due to some accidental fault, a short circuit in the mains wiring becomes inevitable and it the happening causes a disaster and huge lose. At times the consequence leads to fire hazards and even lose of life and property.

How to Make a Non Contact AC Mains Phase Detector Circuit– Measure AC Field Strength Wirelessly

Dec 27, 2011

The circuit discussed in this article is of a non-contact mains AC field detector which displays the presence of a mains AC field from a distance of more an 6 inches.

IC 4060 Pinouts Explained

Another versatile device, the IC 4060 has numerous applications and can be used for implementing various useful functions in an electronic circuit.

How to Understand IC 4017 Pin Outs - Explained in Simple Words

The IC 4017 can be considered as one of the most useful and versatile chip having numerous electronic circuit applications. Technically it is called the Johnsons 10 stage decade counter divider.

Build Simple Transistor Circuits

Dec 26, 2011

A compilation of important assorted transistor simple circuits to build has been included here. Many simple transistor configurations like, rain alarm, delay timer, set reset latch, crystal tester, light sensitive switch and many more have been discussed in this article.

How to Build an Inexpensive Frequency Meter and a Capacitance Meter at Home

Capacitors are one of the major electronic components which come under the passive component family. These are extensively used in lectronic circuits and virtually no circuit can be built without involving these important parts.

Car Burglar Alarm Circuit

Dec 25, 2011

Learn how to build a simple car burglar alarm circuit right in your home. The circuit is built around a few trivial components and yet proves to be totally fool proof with the security of car accessory to which it has been integrated.

Making a Time Machine - Concept Explored

Wondering how to travel in time? Learn it with great Sir Stephen Hawking, according to whom time warp may be an option but seems pretty impractical, the reason being the feed back loop which will just oppose the feasibility of making a time machine and the concept using this theory.

Constant Current Charger Circuit for Lead Acid Battery

Are you looking for a constant current charger circuit to facilitate a safe and automatic charging of your battery? A simple circuit presented here using the IC L200 will simply show you how to build a constant current lead acid battery charger unit.

How to Make a Simple Bedroom Lamp Timer Using IC 741

A simple automatic bedroom lamp timer circuit has been described here to switch off your bedroom lamp after a fixed predetermined time. The use of the reliable 741 IC makes the circuit very easy to build and moreover very accurate.

How to Make a Simple Electronic Weighing Scale Machine

Learn a super simple procedure to make a weighing scale device useful for measuring smaller magnitudes of weight.

How to Make a Simple Stereo Audio Amplifier Circuit Using IC 1521

A simple stereo audio amplifier circuit discussed here is built around the IC TDA 1521, requires very few external passive components and is able to provide a powerful 12 + 12 watts of music output.

How to Build a Simple Room Temperature Monitor Circuit

A very simple yet highly precise air temperature sensor gauge circuit has been presented here. The use of the highly versatile and accurate IC LM 308 makes the circuit respond and react superbly to the smallest temperature changes happening over its surrounding atmosphere. Diode 1N4148 is used as an active ambient temperature sensor here.

2-Pin Motorcycle Turn Signal Indicator Beeper Circuit

A simple construction procedure of a motorcycle electronic turn signal with beeper circuit has been thoroughly explained in this article.

How to Build a Simple Egg Incubator Thermostat Circuit

An electronic incubator thermostat circuit shown in this article is not only simple to build but is also easy to set and acquire exact tripping points at various different set temperature levels. The setting may be completed through two discrete variable resistors. The sensing range is quite good from 0 to 110 degrees Celsius.

Cell Phone Controlled Door Lock Circuit

Controlling your door lock through your personal cell phone was never this easy. Learn how to build a simple electronic circuit that will help in converting your ordinary door lock into a high security door lock which can be now controlled through your own cell phone.

How to Build a 2-Stage Mains Power Stabilizer Circuit - Whole House

In this power stabilizer circuit, one relay is wired to select the high or the low tap from the stabilizer transformer at some particular voltage level; whereas the second relay keeps the normal mains voltage switched in, but the moment there’s a voltage fluctuation it toggles and selects the appropriate HOT tap via the first relay contacts.

Simple Flip Flop Circuits

A very simple yet effective electronic toggle flip flop switch circuit can be built around the IC 4017. By adding just a handful of other passive components the circuit can be made to toggle accurately through subsequent input triggers either manually or electronically. Circuit schematic is included.

Build a Solid State SCR/Triac Controlled Automatic Voltage Stabilizer

This, one of its kind and hard to find triac control AC voltage stabilizer circuit has been designed specifically just for you. Being solid state in design, the voltage switching transitions are very smooth with minimum wear and tear, resulting in efficient voltage stabilization. Discover the whole construction procedure of this unique, solid state mains voltage stabilizer.

How to Build a Simple Hi Efficiency LED Torch Circuit at Home

A simple LED torch circuit that would light up 3 white LEDs from a 6 volt supply and would make your battery last forever is described here. A useful voltage doubler circuit is incorporated here to make a highly efficient circuit using just a handful of components. Learn more how to build it.

Make Your Own Rapid Sea Water Desalination Plant at Home

A simple, low cost set up presented in this article will give you a clear idea regarding how to desalinate sea water at a fast rate and in large quantities.

How to Wire LED Lights - Easy Clues

Learn in this article through a simple formula how easy it is to wire your own LED displays, now you don't just have to wonder how to wire led lights? but actually can do it, know the details here.

Make These Simple IC 741 Opamp Circuit Design Projects

The simple 741 opamp circuit design ideas presented here are not only interesting but also very amusing to build.

Build a Solar Panel Voltage Regulator, Charger Circuit at Home

We all know pretty well about solar panels and their functions. The basic functions of these amazing devices is to convert solar energy or sun light into electricity.

Simple Solar Tracker System - Mechanism and Control Circuit Explained

The circuit and the mechanism explained in this article may be considered as the easiest and perfect dual axis solar tracker system.

Make a Simplest Temperature Indicator Circuit

Dec 24, 2011

A very simple temperature controller circuit can be built by interconnecting a single transistor, a diode and a few other passive components.

RF Remote Control Encoder and Decoder Chip Pinouts Explained

Dec 22, 2011

Making your own universal remote control systems today is very easy. Such procure the relevant chips, assemble them and here goes, your hi-tech remote control device is working for you.

Make a Hi-End RF Remote Control Circuit

Building a hi-end remote control device using very few components today looks pretty plausible. The proposed remote control light switch circuit idea provides you with the opportunity of building and owning this amazing device through simple instructions. Moreover the unit provides a 4-bit data to be exchanged between the transmitter and the receiver modules.

Simple Clap Switch Circuit

Want to build a simple clap switch circuit that will toggle any load in response to your claps? The article is meant exactly for the said purpose. A small sound activated switch circuit comprising a sound amplifier and a flip flop is presented here, which can be easily built and used to toggle any electrical gadget through hand claps.

Make a Workbench Multimeter Circuit With the IC 741

Testing and troubleshooting electronic project circuits requires a multimeter, so why not make the circuit of a homemade multimeter itself as your next electronic project. Interesting homemade circuits like an Ohmmeter, voltmeter, ammeter are discussed here using the IC 741 and just a few other passive components.

Make a Simple Refrigerator Thermostat Circuit

Want to make an accurate electronic thermostat for your refrigerator? The circuit of a solid state thermostat described in this article will surprise you with its “cool” performance.

40 watt Electronic Ballast Circuit

Simple electronic fluorescent ballast circuits are difficult to find and build. A simple homemade electronic 40 watt ballast circuit is neatly explained in this article. The PCB layout of the proposed electronic fluorescent ballast is also provided along with the torroid and the buffer choke winding details.

Make a Simple Earth Leakage Circuit Breaker (ELCB) Circuit

An Earth leakage circuit breaker unit will silently monitor the electrical condition of your appliances and the Earth connection of your house. If anything goes wrong with them it will instantly switch off the mains and stop any further associated loss. A simple ELCB circuit is discussed here.

Make a High Power 250 Watt MosFet Amplifier DJ Circuit

The powerful DJ 250 watt mosfet amplifier circuit design provided in this article is reasonably easy to build and will produce thumping music into the connected loudspeaker. Use of HEXFETs at the output ensures monstrous current and voltage amplification.

Make a Simple Machine Gun Sound Effect Generator Circuit

An impressive little machine gun sound effect generator circuit is discussed here. Once built can be integrated with any audio amplifier to experience a roaring bullet studded war like simulation.

Simple Frequency Counter Circuit Diagram Using a Single IC 4033

The circuit shown below can be used for measuring frequency or Hz. The IC is very simple to make and utilizes just a single IC 4033 and a common cathode display as the main ingredients. If higher frequencies in the the order of two or three digits are required to be measured, then simple the number of modules can be connected in series as described.

Simple DC Over-voltage Protector Circuit Diagram

A very simple DC over voltage protector circuit is shown below. The transistor is set to monitor the input voltage applied to it from the left, in case the voltage rises above a specified limit, the transistor conducts, providing the required current to the SCR, which instantly fires, shorting the output and thus protecting the load from the hazard. It's also called a Crowbar circuit.

Simple Bird Sound generator Circuit Diagram

The diagram presented below shows a simple circuit of a bird sound generator. All the parts are very common and the transformer is an ordinary type as found in small transistor radios at the output stage.

Regulated, High Current, Ripple Free Power Supply Circuit Using 2N3055 Complementary Paired Transistors

The circuit given here below can be used for applications that require stringent voltage regulations and ripple rejection criteria. The transistor pair are configured such that all residual ripple factor are perfectly rectified.

How to Measure AC Milli-volts Using IC 741, Circuit Diagram

The circuit shown below can be used to measure DC potentials in the range of milli-volts. The circuit is highly sensitive and is calibrated to measure voltages in the range of  1 mV minimum to 1 V maximum.

Variable 0 to 300 Volts, Regulated Power Supply Circuit Diagram

This power supply can be used to  obtain a regulated power output, variable right from zero to 300 volts maximum. All the devices should be mounted on heatsinks.

How to Make a Simple DC to DC Voltage Doubler Circuit Diagram, Using IC 4049

The following circuit can  be used for doubling any DC source voltage (up to 15 V DC). The presented design will double any voltage between 4 to 15 V DC and will be able to operate loads at current not  more then 30 mA.

Build a Homemade GSM Car Security System

Dec 21, 2011

This super simple circuit design of a gsm car security system really works. Don't believe it? Find out and learn the simple method of constructing it.

Make a Simple Music Controlled Christmas Lights Circuit

Building your own music controlled Christmas lights may not be as difficult as it may appear to be. The article discusses two simple configurations which may be used to decorate a party hall. The first circuit employs colorful LEDs which when integrated to a music system, interestingly dances forward/backward in a sequential pattern with the applied music intensities. The second circuit involves mains powered incandescent lamps and produces the same results as above imitating and sequencing with the connected music peaks.

Make Interesting Flasher and Fader LED Circuits Using IC 555

The astable multivibrator mode is the most fundamental mode of operation of the IC 555. In this mode it basically functions like a free running oscillator. If this oscillator rate is reduced sufficiently, can be used for driving LED lights. 

Using Cell Phone Charger For Making a LED Tube Light Circuit

A plug in wall lamp can be built at home by using a few white LEDs and by powering it through a cell phone charger. The power from cell phone charger is around 6 volts at 500 mA approximately.

Make an Electronic Candle at Home

It does not use wax, paraffin or flame, yet the device perfectly simulates a conventional candle. Basically it incorporates ordinary electronic parts like LED and battery. The interesting part of it is that it can be extinguished with literally a puff of air.

Illuminating 100 LEDs from 6 Volt Battery Circuit

The article explains an innovative way of driving more than a hundred white LEDs from a 6 volt battery. The circuit utilizes the IC 555 for driving a step up transformer, whose output is finally used for illuminating the LEDs. A special PWM configuration makes the circuit much power efficient.

Make 230 Volts Bulb String Light Circuits for Diwali and Christmas

The article describes how to wire tiny 12 volt flashlight bulbs into decorative string light for decorating houses during festivals like Diwali and Christmas.

Make a 100 Watt LED Floodlight Constant Current Driver Circuit

You might have probably come across these fantastic high power, high efficiency LED modules and wondered how do you make these? Here we learn how to make a 100 watt LED flashlight out of it?

Making a Thermocouple or a Pyrometer Circuit

To make a furnace temperature meter, the sensing element is required to be particularly robust so that it is able to withstand the extreme high temperatures generally developed in furnaces and ovens.

Making a RTD Temperature Meter

A RTD or resistance temperature detector works by detecting the difference or an increase in the resistance of the sensor metal when it's subjected to heat.

FM Wireless Microphone Circuit Design Explained

Making a wireless mic at home can be real fun, here we learn one such simple project which can be used for recording and paying back your voice wirelessly.

How to Make a Bicycle Horn with Ringtone Circuit

The old fashioned mechanical bicycle horns are slowly getting discarded now and the folks are more interested to replace them with the musical horns imitating well as phone ringtones.

Sequential LED Bar Graph Circuit Using IC 4017 Explained

The article describes a simple method of making an incremental LED bar graph by using the IC 4017, which is rather equipped with specifications not suiting the present functions. Let’s learn how we can mod the IC for the operations.

Transformerless Mains High and Low Voltage Cut OFF Circuit, Using IC 324 Explained

The article describes how an accurate transformerless over and under voltage cut out circuit can be made at home for protecting the domestic appliances from sudden dangerous high and low voltage influxes.

Homemade Solid State Relay (SSR) Circuit Explained

Mechanical type of relays can be pretty inefficient in applications which require highly smooth, very swift and clean switching. The proposed circuit of an SSR can be built at home and used in places which require truly sophisticated load handling.

Make Yourself a Simple LED Flasher at Home

Dec 20, 2011

Looking for a simple LED project? Learn how easy it is to build a LED wig wag flasher using just a couple of transistors and few other passive components. A LED flasher schematic has also been provided to facilitate the ease of construction. 

How to Make an LED AC Voltage Indicator - Project Do it Yourself

A simple construction and accurate result are the main features of this tiny circuit. Learn  how to make ac voltage indicator from led in a most simple and easy to understand method.

How To Calculate and Connect LEDs in Series and Parallel

Read this article to briefly understand how to calculate LEDs, and design circuits with them, through simple series, parallel connections.
In this article you will know the basic tricks to calculate LED in series and parallel and learn how to design a large numerical led display.

Simple LED Tubelight Circuit - Explained Comprehensively

Explained in a very lucid style and through a schematic the complete construction of a LED light tube circuit which can be operated directly from the 230V AC mains of your domestic supply. This will not only save electric power but also help curb the global warming issue.

A Homemade Fence Charger, Energizer Circuit Explained

The electric fence charger circuit presented here is basically a high voltage pulse generator. The super high voltage is derived from a commonly used automobile ignition coil. An astable multivibrator is used to generate the required frequency to drive the ignition coil. Another astable is used to control the pulses supplied to the fence.

How to Make a Simple LED Automatic Day/Night Lamp Circuit

Dec 19, 2011

Although the concept may look pretty familiar and common, the main feature of the circuit is its low current consumption and compactness.

Simple 4 Watt LED Driver Circuit Using IC 338

The IC LM338 as we know is a highly versatile device when it comes to controlling voltages and current levels.

Simplest, Efficient 1 Watt LED Driver Circuit

As can be seen in the diagram, the concept hardly utilizes any circuit or rather does not incorporate any hi-end active component for the required implementation of driving a 1 watt LED.

10 LED Simple Roulette Wheel Circuit Diagram

A very simple 10 LED roulette wheel circuit is shown here. pressing the button starts the LEDs in a rotational motion (sequencing) at full swing initially, and gradually slows down, until it stops to a particular, randomly selected LED.

LED Music Level Indicator Circuit Diagram

The shown LEDs in the circuit sequentially light and "dance" as per the level of the music applied at the input, preferable directly from the speaker terminals of the audio gadget whose music level is to be monitored.

Infrared (IR) LED Flood Light Circuit Diagram

Infra Red (IR) LED Flood Light Circuit Diagram

Simple Current Controlled LED Tube Light Circuit Diagram

The given circuit of a current controlled LED tube light uses a couple of high voltage transistors which works on a very basic principle for implementing the required current control operation. Resistor R2 is placed for converting the rising current to voltage across itself.

One Transistor Automatic Battery Charger Circuit

A very simple single transistor automatic battery charger circuit is described in this article, which uses just a single transistor for the voltage detection as well as for automatically disconnecting the battery from the supply when it gets fully charged.

LED Strobe Light Circuit with Chasing, Flashing Effects

Dec 18, 2011

You might be quite familiar with strobe lights and should have seen them pretty commonly in parties and discotheques. Let's see how we can make one such circuit at home using LEDs.

How to Make a Simple Reverse Forward LED Light Chaser Circuit Using IC 4017

LED light chaser circuit typically refers to an electronic configuration able to generate or illuminate a group of LEDs in some predetermined sequence. One popular IC 4017 is very commonly employed for making this type LED sequencer circuit.

Constant Current Automobile Battery Charger Circuit Using IC LM 338

Simple, Constant Current Automobile Battery Charger Circuit Using IC LM 338

Self Regulating Lead Acid Battery Charger Circuit

The post explains how a neat little self regulating automatic battery charger circuit can be made using just two inexpensive transistors.

High Current Lead Acid Battery Charger Circuit

This high current lead acid battery charger circuit can be used for charging high current lead acid batteries in the order of 100 to 200 AH, the design is perfectly automatic and switches of the power to the battery and also itself, once the battery gets fully charged.

20 Watt Tubelight Emergency Light Circuit Diagram

This simple home emergency lights uses very few components yet is able to produce a reasonable amount of light. The components used are very common and can be easily procured from the local electronic retailer.

Emergency Light Circuit Using a Flashlight Bulb

Though it's the world LEDs today, an ordinary flashlight bulb can also be considered a useful light emitting candidate especially because it's much to configure than an LED.

Transformerless LED Emergency Light Circuit

I have presented a few number of interesting LED emergency light circuits in this blog, but these mostly include a transformer for charging the associated battery. In this article we discuss a emergency lamp circuit that's free from the usual bulky transformer.

Making Car Headlights Using Piranha LEDs

You might be pretty familiar with the ordinary two-pin,m 5mm white LEDs, which are by no means “ordinary” and produce lights at reasonably high intensities.

PWM Motor Speed Controller Circuit Using IC556

Controlling or varying a DC motor speed may appear to be not so difficult and you may find plenty of circuits for it. However these circuits do not guarantee consistent torque levels at lower motor speeds, making the functioning quite inefficient.

Simple Transformerless Power Supply Circuit

Dec 17, 2011

A very compact simple transformerless power supply circuit is explained here using the concept of capacitive reactance for stepping down the input AC mains voltage. The idea is cheap yet very effective for applications that require low power for their operations.

FM Remote Control Circuit Using a FM Radio

Remote control circuits are not so easy to build as they incorporate critical inductor stages and also, the components are difficult to procure.

Mains High Low Voltage Cut Off Circuit, Using IC 741

In the earlier chapter we learned a simple configuration of over voltage and under voltage protection circuit using a couple general purpose transistors. Continuing from there the following description explains a similar circuit using a couple of opamps. The inclusion of op amps makes the circuit operations much accurate and tripping points adjustable to any levels as desired by the user.

Mains Over Voltage and Under Voltage Protection Circuit Explained

Our Mains AC domestic power may be full of ups and downs or fluctuations, which may be quite fatal to our sophisticated appliances like TV sets, DVD players, compotes etc. A very simple circuit presented when installed in the house electrical may help in restricting the issue to a great extent.

Transistor Latch Circuit Explained

Dec 16, 2011

A latch circuit can be used to lock or latch the output of the circuit in response to an input signal and sustain the position even after the input signal is removed.
The output may be used to operate a load controlled through a relay, SCR, Triac or simply by the output transistor itself.

Vehicle Immobilizer Circuit Explained

If you own a car and still haven’t incorporated any security system in it or perhaps your old security system is out of order, you can quickly opt for a cheap yet effective security option for your car or any vehicle by installing the proposed circuit. It will cost you not more than a dollar.

How to Make Spy Bug Transmitter Circuit

Here we’ll discuss how to make an electronic spy bug circuit using two methods, one that consists of wire link from the transmitter to the receiver, and the other which is completely wireless and can be used to eavesdrop a particular conversation over a range of about 30 meters, over an ordinary FM radio.

Automatic Water Level Controller with Indicator circuit

Dec 15, 2011

The article a very simple circuit design which can be  used for controlling the water level of an underground water tank by switching the pump motor ON and OFF, depending upon the relevant levels of water in the tank and the position of the immersed sensor points.

Simple Buzzer Circuit - Piezo Electric Buzzer Explained

In this article we learn how to make a very simple buzzer using using piezo electric transducer and hardly any electronic components.

LED Tube Light Circuit

Dec 13, 2011

Using white LEDs for illuminating our homes is becoming popular nowadays, due to the high power efficiency involved with these devices. The diagram shows a straightforward configuration involving many LEDs, arranged in series and parallel.

Simple LED Emergency Light Circuit

Dec 12, 2011

The article describes a very simple homemade emergency light circuit that can be used during power failures and outdoors where any other source of power might be unavailable.

18 LED Light Chaser Circuit Using Two IC 4017

Dec 11, 2011

Decorative lights arranged in different moving patterns look very interesting and are surely eye catching and that’s why these types of lighting arrangement have gained immense popularity in today’s world.

Automatic Vehicle Headlight Dipper/Dimmer Circuit

The circuit described here can be built and used in your vehicle for an automatic dipping and dimming operation of the headlamps, in response to the intense lights coming from an opposite vehicle headlamps.

Simple Automatic Street Light System

A super simple light activated switch circuit is explained here. The circuit can be used for automatically switching ON and switching OFF a particular lamp or group of lamps in response to the varying ambient light levels. The unit once built can be used for switching OFF a lamp when dawn breaks and switching it ON when dusk sets in.

Variable Power Supply Circuit Using IC LM317

Dec 10, 2011

Whether it’s an electronic noob or an expert professional, a variable power supply unit is required by everybody in the field. It is the basic source of power that may be required for various electronic procedures, right from powering intricate electronic circuits to the robust electromechanical devices like motors, relays etc.

How to Hook Up a Solar Panel System - Living of the Grid

Dec 9, 2011

It’s been there since the earth was born and it is here to stay probably even after mankind is completely wiped of from this planet. You guessed it right; we are taking about the sun, the sole source of energy that keeps our planet and us alive. Of late humans have started realizing the many hidden important benefits mankind can get from this fire-ball, which never says “die.”

7-Stage Mains Voltage Stabilizer Circuit

In this article we discuss an interesting circuit which can be used  for controlling our mains AC line fluctuations and for producing very accurate stabilized voltage outputs for our domestic electrical appliances.

5 KVA to 10 KVA Automatic Voltage Stabilizer Circuit Explained - 220 Volts, 120 Volts

The diagram shows a rather simple voltage stabilizer design which can hold huge output power in the order of 5 to 10KVA. The use of SSR or solid state relays makes the output stage easy to configure and very accurate - thanks to the modern SSRs which are designed to trigger massive power in response to smaller input DC potentials.

AC Mains Surge Protector Circuit

Spikes or voltage surges can sometimes be a big nuisance as far as the safety of the various electronic appliances are concerned. Let's learn how to make a simple AC Mains surge protector device at home.

Simple Peltier Refrigerator at Home

We are all familiar with a Peltier device and know how it functions.

Basically it works on the principle of thermo-electric effect (opposite of Seebeck Effect) where a potential difference is used for making or producing hot and cold temperatures over the two ends of a dissimilar metal assembly.

How to Calculate Transformerless Power Supplies

We all know how Ohm’s law works and how to use it for finding the unknown parameter when the other two are known. However, with a capacitive type of power supply having peculiar features and with LEDs connected to it, calculating current, voltage drop and LED resistor becomes a bit confusing.

Single Transistor LED Flasher Circuit

Dec 8, 2011

Can you imagine of making a formidable little LED flasher or blinker using just a single transistor and a couple of other passive parts.

Pure Sine Wave Inverter, Using IC 555

The proposed circuit generates accurately spaced PWM pulses which imitates a sine wave very closely and thus can be considered as good as its sine wave counter part design. Here we use  two stages for creating the required  PWM pulses, the stage comprising the ICs 741 and the other comprising the IC 555. Let’s learn the whole concept in details.

Automatic Voltage Stabilizer Circuit for TV sets and Refrigerator

A voltage stabilizer is a device which is used to sense inappropriate voltage levels and correct them to produce a reasonably stable output at the output where the load is connected.
Here we will study the design of a simple automatic mains AC voltage stabilizer which can be applied for the above purpose.

50 Watt Small Inverter Circuit – A school Science Exhibition project

A 50 watt inverter might look quite trivial, but it can serve some useful purposes to you. When outdoors, this small power house can be used for operating small electronic gadgets, soldering iron, table top radios, incandescent lights, fans etc.

Connecting Two or More Transistors in Parallel

Dec 1, 2011

While making power electronic circuits, configuring the power output stage correctly becomes very crucial.

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