Diagram circuit

§         Negative Supply from single positive Supply

§         Self switching Power Supply

§         Ultra low drop linear voltage regulator

§         Over / Under Voltage Cut-Out

§         High and Low Voltage Cutout with delay and Music

§         High Voltage, Low Current Supply

§         Simple Car Battery Charger

§         7 segment rolling display using PC

§         PC based Frequency Meter

§         Simple Analog to Digital Converter

§         Sawtooth wave generator

§         Simple variable frequency oscillator

§         Discrete component motor direction controller

§         Super simple stepper motor controller

§         Discrete component motor direction controller

§         Automatic Speed Controller for fans & Coolers

§         Alternating Flasher

§         Dancing Lights

§         Switch using a single Chip

§         Christmas Star

§         Running Message Display

§         Automatic Room Lights

§         Emergency Light

§         Automatic Dual output Display

§         Pot plant water tester electronic

§         Programmable Digital Code Lock

§         Ultrasonic Pest Repeller

§         Simple IF Signal Generator

§         TV remote control Blocker

§         Flashy Christmas Lights

§         JAM(Just A Minute) Circuit

§         Electronic Scoring Game

§         Soft ON/OFF switch

§         Control electrical appliances using PC

§         Car anti theft wireless alarm.

§         Dome light dimmer for Cars

§         Wiper Speed Control

§         Charge Monitor for 12V lead acid battery.

§         Audio level meter (vumeter)

§         Bass-treble tone control circuit

§         Audio Light Modulator

§         5 band graphic equalizer using a single IC/chip

§         Digital Volume Control

§         Ultrasonic Switch

§         Sound Controlled Filp Flop

§         Audio Visual Indicator for Telephones

§         Use the CD-ROM drive as a audio CD player without ...

§         Infrared Head Phones

§         Low cost intercom using transistors

§         Stereo Channel Selector

§         Brakelight Flasher

§         Melody generator for greeting cards

§         Timed Burglar Alarm

§         Infrared beam barrier/ proximity sensor

§         Beeper

§         Big Ben Sound

§         Police Siren

§         Factory Siren

§         DayLight Alarm

§         Fire Alarm

§         Water Level Indicator with alarm

§         A simple electronic buzzer ic

§         Rain Alarm

§         Power supply failure alarm