Motion Sensor for Security Light

circuitry of Motion Sensor for Security Light Here is a system based on PIR motion detector module BS1600 (or BS1700) that can be us...

ELECTRONIC BICYCLE LOCK

Guyz In today's generation where all people are driving car ,bikes etc. There will soon a day when we all will on  bicycle .I am not po...

CD-ROM Drive as Digital -audio CD-Player

The component need to prepare this : Transformer Diode Capacitor and Resistor IC's IC LM7812 and IC LM 7805 A ROM A CD-...

BIPOLAR transistor TESTER

This tester is primarily meant to test bipolar transistors. It can indicate the type of the transistor as well as identify its base, coll...

DARKROOM TIMER

Many times when when we do experiments in Dark room we use stop watch but due to no light we can't see the time properly that's ...

REMOTE CONTROLLED DIGITAL AUDIO PROCESSOR

Info These days most audio systems come  with  remote  controllers. However,  no  such  facility  is provided for normal audio amplifiers...

Alarm circuit that generates bird-chirping sound

Alarm circuit that generates bird-chirping sound IC CD4047 & IC CD4027 IC 3555 & IC 4555 Speaker transistor LED resistor...

HIT SWITCH

After a long vacation of Diwali,Now I am here to share project,ppt,seminars etc. Hope you miss us in Diwali. So this week we bring a ...

FLUID LEVEL DETECTOR

FLUID LEVEL DETECTOR        Here is a simple but versatile circuit of fluid level detector which can be used for various applications...

Gas Leakage Alarm

LPG gas is supplied in pressurised steel cylinders. As this gas is heavier than air, when it leaks from a cylinder it flows along floor ...

Pyroelectric fire alarm

To prepare Pyroelectric fire alarm we need IC CD4060 SCR/transistor diode Relays piezo element  piezo buzzer Solenoid pump  Led R...

LAPTOP PROTECTOR

        Protect your valuable laptop against theft using this miniature alarm generator. Fixed inside the laptop case, it will sound a lo...

PC Temperature Controller

  Here is a simple temperature controller that turns your personnel computer (PC) off when the temperature of the PC increases beyond th...

Bi-stable Switch for AC mains

This AC mains-operated bistable  switch turns on or turns off a device using a miniature neon lamp and a few discrete components. This s...

Mobile as Stereo Player for Car

Using a mobile phone while driving is dangerous. It is also against the law. However,  you can use your mobile phone as a  powerful musi...

Short Range Hand Wave Detector (Shadow Detector)

The circuit below works quite well in typical indoor room lighting. I would not recommend its use in direct sunlight. Two small PIN ...

Staircase Light With Auto Switch-Off

Staircase Light With Auto Switch-Off  We are all familiar with the electrical wiring arrangement that connects an electrical bulb w...

Speed-limit Alert

Wireless portable unit Adaptable with most internal combustion engine vehicles ! Parts: R1,R2,R19_______1K 1/4W Resistors R3-R6,R...

LOW-COST HEARING AID

Commercially available hearing aids are quite costly. Here is an inexpensive hearing aid circuit that uses just four transistors and a f...

Call Bell With Welcome Indication

Here is a simple call bell circuit  that displays a welcome message when somebody presses  the call bell switch momentarily. the  alphan...