| 1 | Home Appliance Control Using TV Remote | 10252 |
| 2 | CCFL Tester for LCD Screens | 3291 |
| 3 | Laser Communication System | 12268 |
| 4 | Remote Control for Toy Car | 11543 |
| 5 | Wireless Extender for IR Remote Controls | 14505 |
| 6 | Telephone Line In-Use Indicator | 7104 |
| 7 | Laser-based Intruder Alarm | 11786 |
| 8 | AC Mains Bistable Switch | 9876 |
| 9 | Gas Leakage Alarm | 30796 |
| 10 | Transistorised Code Lock With Torch | 10880 |
| 11 | Call Bell with Welcome Indication | 17713 |
| 12 | Dew-Point Sensor | 10308 |
| 13 | Cash Box Guard | 19391 |
| 14 | Automatic Sprinkler Control System | 15075 |
| 15 | Guitar Effect Pedal Power | 9431 |
| 16 | Infrared Illuminator | 17340 |
| 17 | Smart Laptop Docking Station | 17158 |
| 18 | Flasher For Deepawali | 26744 |
| 19 | Electronic Metronome | 13644 |
| 20 | Mobile Car Stereo Player | 27053 |
| 21 | Motion Sensor for Security Light | 56079 |
| 22 | Electric Guitar Preamplifier | 10318 |
| 23 | Bipolar Transistor Tester | 18992 |
| 24 | Mobile Electronic Workbench | 38570 |
| 25 | Digital Thermometer | 54008 |
| 26 | Weekly Reminder | 26778 |
| 27 | Electronic Dice Using AT89C2051 | 16236 |
| 28 | Digital Timer Enhancement | 19052 |
| 29 | Water-Level Indicator Using 7-segment Display | 46562 |
| 30 | Automatic Light Controller Using 7806 | 43339 |
| 31 | Spy Ear | 54594 |
| 32 | Antisleep Alarm for Students | 65984 |
| 33 | Four-Stage FM Transmitter | 32237 |
| 34 | Numeric Water-level Indicator | 35307 |
| 35 | Versatile Probe | 15186 |
| 36 | Electronic Candles | 65607 |
| 37 | Simple Sensitive Remote Control Tester | 15203 |
| 38 | Pyroelectric Fire Alarm | 25171 |
| 39 | Telephone Call Recorder | 45211 |
| 40 | DuoPhone | 34046 |
| 41 | Mini UPS System | 84054 |
| 42 | Car-Reversing Horn With Flasher | 26828 |
| 43 | Short-Circuit Protection in DC Low-Voltage Systems | 27369 |
| 44 | Inverter for Soldering Iron | 38807 |
| 45 | Transistorised Logic Probe for TTL | 14310 |
| 46 | Constant-Current Battery Charger | 35905 |
| 47 | Multitone Siren | 28018 |
| 48 | Generator Room Light | 37174 |
| 49 | Liquid Level Alarm | 47308 |
| 50 | PC Power Manager | 30093 |
| 51 | Skin Response Meter | 49655 |
| 52 | Solar Panel based Charger and Small LED Lamp | 62217 |
| 53 | Electronic Bicycle Lock | 53113 |
| 54 | Remote-operated Master Switch | 45674 |
| 55 | USB Power Socket | 46629 |
| 56 | Triple Power Supply | 37955 |
| 57 | Smart Hearing Aid | 28700 |
| 58 | Midnight Security Light | 52572 |
| 59 | Automated Alarm Circuits | 37786 |
| 60 | Traffic Baton | 35221 |
| 61 | Laser-guided Door Opener | 56933 |
| 62 | Battery-level Indicator | 57539 |
| 63 | Traffic Controller | 51786 |
| 64 | Night Alert | 47894 |
| 65 | Muscular Stimulator | 33241 |
| 66 | Wireless Switch | 116410 |
| 67 | Electric Window Fence Charger | 19783 |
| 68 | Three-Phase Appliance Protector | 30659 |
| 69 | Aquarium Probe | 32865 |
| 70 | Bicycle Indicator | 36186 |
| 71 | Poor Man’s Hearing Aid | 30058 |
| 72 | Portable Lamp Flasher | 27587 |
| 73 | Car Anti-theft Guard | 47959 |
| 74 | USB Power Booster | 48342 |
| 75 | Smart Vibration Sensor | 41720 |
| 76 | Drinking Water alarm | 63317 |
| 77 | Glow Plug Controller | 23312 |
| 78 | Tester For Remote Control | 36045 |
| 79 | Automatic Low-Power Emergency Light | 52814 |
| 80 | Mobile Bug | 88694 |
| 81 | LED Lighting for Christmas | 60811 |
| 82 | Current Sensor | 55596 |
| 83 | Seismic Sensor | 45751 |
| 84 | Dice With 7-Segment Display | 39652 |
| 85 | Motorbike Alarm | 49571 |
| 86 | Laptop Protector | 91667 |
| 87 | Shutter Guard | 26173 |
| 88 | Desktop Power Supply | 41886 |
| 89 | PC Temperature Alarm | 8573 |
| 90 | Mobile Shield | 58638 |
| 91 | Infrared Firecracker Igniter | 41156 |
| 92 | Automatic Phase Changer | 43359 |
| 93 | Flying Saucer | 63778 |
| 94 | Anti-Collision Rear Light | 39474 |
| 95 | Light Fence | 42901 |
| 96 | MAT Switch | 39228 |
| 97 | 5-Band Graphic Equaliser | 37339 |
| 98 | Clock Timer | 55665 |
| 99 | Fully Automatic Emergency Light | 72741 |
| 100 | IR Music Transmitter and Receiver | 76211 |
| 101 | Electronic Horn | 51443 |
| 102 | Darkroom Timer | 10895 |
| 103 | Water level indicator With Alarm | 18792 |
| 104 | PC Multimedia Speakers | 16323 |
| 105 | Precision Amplifier with Digital Control | 8130 |
| 106 | Security System Switcher | 10232 |
| 107 | Digital Speedometer | 19717 |
| 108 | House Security System | 25433 |
| 109 | Long Range IR Transmitter | 13451 |
| 110 | Telephone Conversation Recorder | 10242 |
| 111 | Automatic Dual Output Display | 6681 |
| 112 | Digital Dice With Numeric Display | 7281 |
| 113 | 2-Line Intercom-Cum-Telephone Line Changeover Circuit | 7138 |
| 114 | Magic Light | 40485 |
| 115 | Teleremote Control | 10972 |
| 116 | Programmable LED Indicator | 11875 |
| 117 | Touch Sensitive Musical Bell With Timer | 8669 |
| 118 | Staircase Light With Auto Switch-Off | 10864 |
| 119 | Tiny Dew Sensor | 8290 |
| 120 | Computerised Morse Code Generator Transmitter | 5804 |
| 121 | Telecom Headset | 7846 |
| 122 | Telephone Ringer Using Timer ICs | 6354 |
| 123 | Power Supply Failure Alarm | 11551 |
| 124 | Protection for Your Electrical Appliance | 11304 |
| 125 | Simple Code Lock | 16597 |
| 126 | PC-based 7 Segment Rolling Display | 10487 |
| 127 | Automatic Room Power Control | 16149 |
| 128 | Fuild Level Detector | 9375 |
| 129 | Accurate Electronic Stop Watch | 6045 |
| 130 | Sensitive Temperature Switch | 8123 |
| 131 | Ramp Controlled Light | 6514 |
| 132 | 7MHz CW AM QRP Transmitter | 6818 |
| 133 | Auto Reset Over-Under Voltage Cut-Out | 6219 |
| 134 | Shortwave Transmitter | 7378 |
| 135 | Programmable Door-Bell with Flashing LEDS | 8766 |
| 136 | Precision Attenuater with Digital Control | 4439 |
| 137 | Parallel Telephone With Secrecy | 6535 |
| 138 | Telephone Call Meter Using Calculator and COB | 7261 |
| 139 | Magnetic Proximity Switch | 8286 |
| 140 | Electronic Scoring Game | 8058 |
| 141 | Electronic Card-Lock System | 15300 |
| 142 | Blown Fuse Indicator | 9243 |
| 143 | Simple Intercom Circuit | 11666 |
| 144 | LED-Based Message Display | 21156 |
| 145 | Telephone Receiver | 11249 |
| 146 | Water-LeveL Controller | 18118 |
| 147 | Song Number Display | 11278 |
| 148 | Fastest-finger-first-indicator | 12879 |
| 149 | Musical 'Touch' Bell | 14806 |
| 150 | Audio-Visual Extra Ringer For Phone | 5729 |
| 151 | Contactless AC Mains Voltage Detector | 9385 |
| 152 | Fire Alarm | 20733 |
| 153 | Precison 1Hz Clock Generator Using Chip-On-Board | 6139 |
| 154 | Short Wave AM Transmitter | 9523 |
| 155 | Solidstate Auto Power off on Mains Failure | 6370 |
| 156 | Automatic Emergency Torch | 13875 |
| 157 | Automatic Emergency Light | 17148 |
| 158 | Versatile CMOS TTL Logic and Clock Probe | 5388 |
| 159 | A Hierarchical Priority Encoder | 4609 |
| 160 | Digital Mains Voltage Indicator | 7903 |
| 161 | Low Cost PCO Billing Meter | 7676 |
| 162 | Automatic Speed Controller For Fans and Coolers | 16047 |
| 163 | Telephone Line Based Audio Muting | 4856 |
| 164 | Precision Digial AC Power Controller | 5488 |
| 165 | Phone BroadCaster | 7346 |
| 166 | Long-range FM Transmitter | 15244 |
| 167 | Self Switch Power Supply | 9632 |
| 168 | Electrical Equipment Control Using PC | 11561 |
| 169 | Low Cost Transistorised Intercom | 7246 |
| 170 | Cordless Phone Backup | 6072 |
| 171 | Sleep Switch Cum Wake Timer | 8214 |
| 172 | Simple Analogue To Digital Converter | 8600 |
| 173 | Digital Switching System | 9515 |
| 174 | Ultra Low Drop Linear Regulator | 4276 |
| 175 | 40-Meter Direct Conversion Receiver | 9688 |
| 176 | Frequency Measurement Using PC | 8902 |
| 177 | Miniature Strobe Light | 5622 |
| 178 | CD-Rom Drive as Digital-Audio CD Player | 11611 |
| 179 | Clap Remote | 16562 |
| 180 | Smart Phone Light | 7849 |
| 181 | Handy Zener Diode Tester | 6820 |
| 182 | Telephone Line Vigilant | 6369 |
| 183 | High & Low Voltage Cutout | 9850 |
| 184 | Color Sensor | 18726 |
| 185 | Running Message Display | 14934 |
| 186 | Low Current High Voltage Power Supply | 7963 |
| 187 | Intelligent Switch | 15476 |
| 188 | Automatic Temperature Controlled Fan | 14971 |
| 189 | Watch Dog for Telephones | 8379 |
| 190 | UPS for Cordless Telephones | 7540 |
| 191 | Economical Pump Controller | 8083 |
| 192 | Clap Switch | 19140 |
| 193 | Ultrasonic Proximity Detector | 51114 |
| 194 | Secret Bell | 69878 |
| 195 | Variable Power Supply Using a Fixed-Voltage Regulator IC | 61773 |
| 196 | Appliance Timer-Cum-Clap Switch | 31720 |
| 197 | Telephone-Operated Calling System | 44999 |
| 198 | Front Door Guard | 52596 |
| 199 | Bell-Cum Light Controller | 31223 |
| 200 | Friendly Charger for Mobile Phones | 67150 |
| 201 | Hearing Aid | 42386 |
| 202 | Speed Control of DC Motor Using Pulse-Width Modulation | 60634 |
| 203 | Remote-Controlled Fan Regulator | 101186 |
| 204 | Low-Power Voltage Doubler | 35835 |
| 205 | Parrot-Sounding AC Doorbell | 35134 |
| 206 | Multi-Melody Generator With Instrumental Effect | 25782 |
| 207 | School-College Quiz Buzzer | 32568 |
| 208 | Visual AC Mains Voltage Indicator | 31727 |
| 209 | Simple Short-Wave Transmitter | 32054 |
| 210 | Solar Lighting System | 104943 |
| 211 | Infrared Bug | 52472 |
| 212 | Picnic Lamp | 45903 |
| 213 | Versatile Power Supply | 41076 |
| 214 | Shadow Alarm | 64315 |
| 215 | IR Burglar Deterrent | 69733 |
| 216 | Versatile Water-Level Controller | 56168 |
| 217 | Automatic-Off Timer For CD Players | 36171 |
| 218 | Heat-Sensitive Switch | 43262 |
| 219 | Sensitive Vibration Detector | 40869 |
| 220 | Digital Dice | 46497 |
| 221 | Remote-Controlled Power-Off Switch | 74250 |
| 222 | Little Door Guard | 51276 |
| 223 | Stress Meter | 60674 |
| 224 | Medium-Power FM Transmitter | 57948 |
| 225 | Teleconferencing System | 56118 |
| 226 | Smart Cellphone Holder | 49677 |
| 227 | Fuel Reserve Indicator For Vehicles | 46456 |
| 228 | Brake Failure Indicator | 57231 |
| 229 | Safety Guard | 40279 |
| 230 | Mains Supply Failure Alarm | 40664 |
| 231 | Remote Control For Home Appliances | 160864 |
| 232 | Micromotor Controller | 55980 |
| 233 | Solar Bug | 66077 |
| 234 | Simple Digital Security System | 66896 |
| 235 | Digital Audio - Video Input Selector | 6192 |
| 236 | Auto Turn-Off Battery Charger | 75729 |
| 237 | Atmel AVR ISP Dongle | 50217 |
| 238 | Audio Amplifier for Personal Stereo | 63993 |
| 239 | Musical Light Chaser | 56633 |
| 240 | Hit Switch | 91708 |
| 241 | Water-Level Controller | 64080 |
| 242 | Fire Alarm Using Thermistor | 59243 |
| 243 | Electronic Watchdog | 82867 |
| 244 | Automatic School Bell | 55148 |
| 245 | Anti-Theft Alarm For Bikes | 79564 |
| 246 | DC Motor Control Using A Single Switch | 59878 |
| 247 | Solidstate Remote Control Switch | 48682 |
| 248 | Flashing-Cum-Running Light | 46466 |
| 249 | Quality FM Transmitter | 102975 |
| 250 | Stabilised Power Supply With Short-Circuit Indication | 44174 |
| 251 | Digital Stop Watch | 65406 |
| 252 | Cell-Phone-Controlled Audio Video Mute Switch | 58592 |
| 253 | PC-Based DC Motor Speed Controller | 76370 |
| 254 | Under-Over-Voltage Beep for Manual Stabiliser | 30697 |
| 255 | Child's Lamp | 66504 |
| 256 | Watchman Watcher | 59629 |
| 257 | Highway Alert Signal Lamp | 43535 |
| 258 | Low-Cost Electronic Quiz Table | 40222 |
| 259 | Mobile Cellphone Charger | 123254 |
| 260 | Smart Foot Switch | 51113 |
| 261 | Programmable Timer for Appliances | 67689 |
| 262 | Anti-Bag-Snatching Alarm | 41802 |
| 263 | Multiband CW Transmitter | 40614 |
| 264 | Automatic Night Lamp With Morning Alarm | 81417 |
| 265 | Touch Dimmer | 79001 |
| 266 | Mosfet-Based Preamplifier for FM Radio DXing | 49231 |
| 267 | Non-Contact Power Monitor | 36938 |
| 268 | Remote-Operated Musical Bell | 58253 |
| 269 | Electronic Motor Starter | 72216 |
| 270 | Washing Machine Motor Controller | 63392 |
| 271 | Over-Under-Voltage Protection of Electrical Appliances | 45311 |
| 272 | Low-Cost Hearing Aid | 57333 |
| 273 | Voltage-Based Controller For Switches | 34018 |
| 274 | DTMF Receiver IC MT8870 Tester | 70234 |
| 275 | Pulse Generator | 63900 |
| 276 | Infrared Remote Control Timer | 66699 |
| 277 | Multi-Switch Doorbell With Indicators | 38704 |
| 278 | Electronic Security System | 209848 |
| 279 | Lead-Acid Battery Charger With Voltage Analyser | 78008 |
| 280 | Ultra-Bright LED Lamp | 123963 |
| 281 | Three-Colour Display Using Bicolour LEDs | 66942 |
| 282 | Computerised Universal Timer | 51705 |
| 283 | Number Guessing Game | 51915 |
| 284 | Intruder Radio Alert System | 62129 |
| 285 | Flashing Beacon | 62323 |
| 286 | Knock Alarm | 83499 |
| 287 | Automated Traffic Signal Controller | 97046 |
| 288 | Infrared Toy Car Motor Controller | 259415 |
| 289 | Mains Manager | 47203 |
| 290 | Crystal-Controlled Time-Base Generator | 36405 |
| 291 | Mains Operated Christmas Star | 40522 |
| 292 | Music On-Hold For Telephones | 45635 |
| 293 | Solidstate Switch For DC-Operated Gadgets | 39110 |
| 294 | Ding-Dong Bell | 92771 |
| 295 | IR Remote Switch | 145943 |
| 296 | FM Booster | 136368 |
| 297 | Laser Torch-Based Voice Transmitter And Receiver | 99162 |
| 298 | Mobile Phone Battery Charger | 107226 |
| 299 | Condenser Mic Audio Amplifier | 83359 |
| 300 | Speller Effect Sign Display | 43609 |
| 301 | Stereo Tape Head Preamplifier For PC Sound Card | 48126 |
| 302 | Invisible Broken Wire Detector | 105970 |
| 303 | Simple Telephone Ring Tone Generator | 56959 |
| 304 | Anti-Theft Security For Car Audios | 59803 |
| 305 | DTMF Proximity Detector | 79370 |
| 306 | Versatile Zener Diode Tester | 48235 |
| 307 | 15-Step Digital Power Supply | 82647 |
| 308 | Auto Shut-off For Cassette Players And Amplifiers | 37008 |
| 309 | Generation Of 1-Sec. Pulses Spaced 5-Sec. Apart | 31047 |
| 310 | 9-Line Telephone Sharer | 78631 |
| 311 | Automatic Heat Detector | 75948 |
| 312 | Single Phase Electronic Starter | 44399 |
| 313 | Infrared Electronic Shooting Game | 28251 |
| 314 | Add-On Stereo Channel Selector | 32118 |
| 315 | Telephone Number Display | 89295 |
| 316 | Luggage Security System | 60874 |
| 317 | Universal High-Resistance Voltmeter | 33404 |
| 318 | Time Switch | 55498 |
| 319 | Charge Monitor For 12V Rechargeable Lead-Acid Battery | 83042 |
| 320 | Dual-Channel Digital Volume Control | 45286 |
| 321 | Infrared Cordless Headphone | 91995 |
| 322 | Simple Low-Cost Digital Code Lock | 57417 |
| 323 | Electronic Jam | 77783 |
| 324 | Wiper Speed Controller | 34456 |
| 325 | IC Controlled Emergency Light With Charger | 66799 |
| 326 | Colour Sensor | 57001 |
| 327 | FM Transmitter For Channel Changer | 41386 |
| 328 | Tank Overflow Preventer | 39875 |
| 329 | 33-Volt Tunning Voltage | 21126 |
| 330 | Appliance Timer | 23672 |
| 331 | Electronic Code Lock | 51139 |
| 332 | Flashing Brakelight | 24939 |
| 333 | IR Remote Control | 51324 |
| 334 | Car Anti-Theft Wireless Alarm | 42942 |
| 335 | Soft Musical Telephone Ringer | 15971 |
| 336 | Low Cost Transistorised Inverter | 40486 |
| 337 | Automatic Telephone Answering Machine | 34257 |
| 338 | Hourly Chime Function Generator | 16217 |
| 339 | Divide-By-N Counter Realisation Using ICs CD4033 And CD4017 | 23482 |
| 340 | Programmable Priority Time Switch | 18144 |
| 341 | Digital Volume Control | 39076 |
| 342 | Extension Phone Switcher | 14656 |
| 343 | Battery Opeated High Voltage Source | 24796 |
| 344 | Handy Telephone Receiver | 23554 |
| 345 | A Highly Efficient DC Lamp Dimmer | 17620 |
| 346 | Low Cost Automatic Gate LIght With A Musical Bell | 23538 |
| 347 | Automatic Switch For Audio Power Amplifier | 20295 |
| 348 | Capacitance Bridge | 24146 |
| 349 | Darkness Controlled Light Switch | 35437 |
| 350 | AF/RF Signal Tracer | 11094 |
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