| S No. | Circuit Name | Hits |
| 1 | PC-Based Oscilloscope | 195440 |
| 2 | Infrared Toy Car Motor Controller | 163998 |
| 3 | Long-Range FM Transmitter | 160660 |
| 4 | Electronic Security System | 86909 |
| 5 | House Security System | 85652 |
| 6 | FM Booster | 80046 |
| 7 | IR Remote Switch | 79242 |
| 8 | Clap Switch | 71148 |
| 9 | Electrical Equipment Control Using PC | 64474 |
| 10 | Water-Level Controller | 63694 |
| 11 | Laser Torch-Based Voice Transmitter And Receiver | 62944 |
| 12 | LED-Based Message Display | 62604 |
| 13 | Automated Traffic Signal Controller | 60009 |
| 14 | Telephone Receiver | 59699 |
| 15 | Ultra-Bright LED Lamp | 59017 |
| 16 | Invisible Broken Wire Detector | 57907 |
| 17 | Quality FM Transmitter | 57738 |
| 18 | Ding-Dong Bell | 55076 |
| 19 | Infrared Cordless Headphone | 55017 |
| 20 | DTMF Proximity Detector | 54296 |
| 21 | 9-Line Telephone Sharer | 53885 |
| 22 | Remote Control For Home Appliances | 53660 |
| 23 | Condenser Mic Audio Amplifier | 53054 |
| 24 | Knock Alarm | 52675 |
| 25 | Mobile Phone Battery Charger | 52218 |
| 26 | 15-Step Digital Power Supply | 51963 |
| 27 | Telephone Number Display | 51300 |
| 28 | Mobile Cellphone Charger | 50895 |
| 29 | Lead-Acid Battery Charger With Voltage Analyser | 49567 |
| 30 | DTMF Receiver IC MT8870 Tester | 47740 |
| 31 | Water-Level Controller | 47413 |
| 32 | Automatic Night Lamp With Morning Alarm | 47306 |
| 33 | Musical ‘Touch’ Bell | 46115 |
| 34 | Charge Monitor For 12V Rechargeable Lead-Acid Battery | 45199 |
| 35 | PC-Based DC Motor Speed Controller | 44711 |
| 36 | Infrared Remote Control Timer | 44195 |
| 37 | Intruder Radio Alert System | 42719 |
| 38 | Cell-Phone-Controlled Audio/Video Mute Switch | 42702 |
| 39 | Touch Dimmer | 42506 |
| 40 | Programmable Timer for Appliances | 42356 |
| 41 | Automatic Heat Detector | 42307 |
| 42 | Three-Colour Display Using Bicolour LEDs | 41273 |
| 43 | Electronic Motor Starter | 41154 |
| 44 | Electronic Card-Lock System | 40657 |
| 45 | Fastest Finger First Indicator | 39745 |
| 46 | Electronic Watchdog | 39378 |
| 47 | Remote-Operated Musical Bell | 38741 |
| 48 | Anti-Theft Security For Car Audios | 38417 |
| 49 | Flashing Beacon | 38256 |
| 50 | Simple Code Lock | 38229 |
| 51 | Shortwave Transmitter | 38208 |
| 52 | Washing Machine Motor Controller | 38122 |
| 53 | Teleremote Control | 38115 |
| 54 | Simple Telephone Ring Tone Generator | 38020 |
| 55 | Anti-Theft Alarm For Bikes | 37748 |
| 56 | Automatic Speed-Controller For Fans and Coolers | 37343 |
| 57 | Pulse Generator | 37288 |
| 58 | Parallel Telephone With Secrecy and Call Prevention | 36135 |
| 59 | Digital Mains Voltage Indicator | 36101 |
| 60 | Digital Stop Watch | 35312 |
| 61 | Electronic Jam | 35240 |
| 62 | Low-Cost Hearing Aid | 35183 |
| 63 | Power-Supply Failure Alarm | 34763 |
| 64 | Computerised Universal Timer | 34224 |
| 65 | Child's Lamp | 33812 |
| 66 | Song Number Display | 33729 |
| 67 | Audio Amplifier for Personal Stereo | 33587 |
| 68 | Auto Turn-Off Battery Charger | 33026 |
| 69 | Music On-Hold For Telephones | 32959 |
| 70 | CD-ROM Drive As Digital-Audio CD-Player | 32606 |
| 71 | Precision Amplifier With Digital Control | 32516 |
| 72 | Simple Digital Security System | 32472 |
| 73 | Over-/Under-Voltage Protection of Electrical Appliances | 32459 |
| 74 | Stereo Tape Head Preamplifier For PC Sound Card | 32376 |
| 75 | IC Controlled Emergency Light With Charger | 32339 |
| 76 | Luggage Security System | 32326 |
| 77 | DarkRoom Timer | 31952 |
| 78 | Remote-Controlled Power-Off Switch | 31894 |
| 79 | Simple Low-Cost Digital Code Lock | 31606 |
| 80 | Solar Lighting System | 31158 |
| 81 | Telephone Conversation Recorder | 31041 |
| 82 | Mains Manager | 30654 |
| 83 | DC Motor Control Using A Single Switch | 30328 |
| 84 | Hit Switch | 30161 |
| 85 | Remote-Controlled Fan Regulator | 29921 |
| 86 | Low-Cost PCO Billing Meter | 29808 |
| 87 | Versatile Zener Diode Tester | 29770 |
| 88 | Watchman Watcher | 29471 |
| 89 | Number Guessing Game | 29288 |
| 90 | Mosfet-Based Preamplifier for FM Radio DXing | 28873 |
| 91 | Solidstate Remote Control Switch | 28656 |
| 92 | Solar Bug | 28643 |
| 93 | Medium-Power FM Transmitter | 28584 |
| 94 | Fire Alarm Using Thermistor | 28390 |
| 95 | Musical Light Chaser | 28295 |
| 96 | 2-Line Intercom-Cum-Telephone Line Changeover Circuit | 28174 |
| 97 | Water Level Indicator With Alarm | 27348 |
| 98 | Speller Effect Sign Display | 27131 |
| 99 | Micromotor Controller | 26797 |
| 100 | Smart Foot Switch | 26765 |
| 101 | Low-Cost Transistorised Intercom | 26625 |
| 102 | Telephone Ringer Using Timer ICs | 26440 |
| 103 | Mains Operated Christmas Star | 26233 |
| 104 | Automatic School Bell | 26087 |
| 105 | Parallel Telephones With Secrecy | 25971 |
| 106 | Teleconferencing System | 25963 |
| 107 | Precision Digital AC Power Controller | 25872 |
| 108 | Multiband CW Transmitter | 25838 |
| 109 | Flashing-Cum-Running Light | 25789 |
| 110 | Simple Analogue To Digital Converter | 25734 |
| 111 | Dual-Channel Digital Volume Control | 25695 |
| 112 | Stabilised Power Supply With Short-Circuit Indication | 25172 |
| 113 | Multi-Switch Doorbell With Indicators | 25033 |
| 114 | Phone BroadCaster | 25014 |
| 115 | Shadow Alarm | 24889 |
| 116 | Time Switch | 24843 |
| 117 | Solidstate Switch For DC-Operated Gadgets | 24369 |
| 118 | Auto Shut-off For Cassette Players And Amplifiers | 24369 |
| 119 | Little Door Guard | 24160 |
| 120 | Crystal-Controlled Time-Base Generator | 24023 |
| 121 | Under-/Over-Voltage Beep for Manual Stabiliser | 23705 |
| 122 | Telephone Call Meter Using Calculator And COB | 23630 |
| 123 | Smart Cellphone Holder | 23548 |
| 124 | Blown Fuse Indicator | 23360 |
| 125 | Ultrasonic Proximity Detector | 23347 |
| 126 | Highway Alert Signal Lamp | 23296 |
| 127 | Anti-Bag-Snatching Alarm | 23211 |
| 128 | Atmel AVR ISP Dongle | 23182 |
| 129 | Brake Failure Indicator | 23144 |
| 130 | Cordless Phone Backup | 22995 |
| 131 | Self-Switching Power Supply | 22839 |
| 132 | Non-Contact Power Monitor | 22806 |
| 133 | Single Phase Electronic Starter | 22738 |
| 134 | Protection For Your Electrical Appliances | 22304 |
| 135 | Versatile Water-Level Controller | 21951 |
| 136 | Frequency Measurements Using PC | 21900 |
| 137 | Low-Cost Electronic Quiz Table | 21385 |
| 138 | Fuel Reserve Indicator For Vehicles | 21283 |
| 139 | Digital Switching System | 21225 |
| 140 | Stress Meter | 21178 |
| 141 | Voltage-Based Controller For Switches | 20863 |
| 142 | Infrared Bug | 20780 |
| 143 | A Hierarchical Priority Encoder | 20019 |
| 144 | Digital Audio/Video Input Selector | 19934 |
| 145 | Add-On Stereo Channel Selector | 19892 |
| 146 | Digital Dice | 19593 |
| 147 | PC-Based 7-Segment Rolling Display | 19553 |
| 148 | Precision Attenuator With Digital Control | 19498 |
| 149 | Magnetic Proximity Switch | 19439 |
| 150 | 40-Metre Direct Conversion Receiver | 19405 |
| 151 | Versatile Power Supply | 19146 |
| 152 | IR Music Transmitter and Receiver | 19005 |
| 153 | Telephone Line Based Audio Muting And Light-On Circuit | 18737 |
| 154 | Mains Supply Failure Alarm | 18699 |
| 155 | IR Burglar Deterrent | 18685 |
| 156 | Variable Power Supply Using a Fixed-Voltage Regulator IC | 18612 |
| 157 | Generation Of 1-Sec. Pulses Spaced 5-Sec. Apart | 18458 |
| 158 | Digital Speedometer | 18201 |
| 159 | Sleep-Switch Cum Wake-up Timer | 18106 |
| 160 | Clap Remote | 18035 |
| 161 | Sensitive Vibration Detector | 17937 |
| 162 | Safety Guard | 17825 |
| 163 | Heat-Sensitive Switch | 17803 |
| 164 | Picnic Lamp | 17535 |
| 165 | Universal High-Resistance Voltmeter | 17468 |
| 166 | Miniature Strobe Light | 17295 |
| 167 | Speed Control of DC Motor Using Pulse-Width Modulation | 17268 |
| 168 | Colour Sensor | 17037 |
| 169 | Friendly Charger for Mobile Phones | 16647 |
| 170 | Secret Bell | 16187 |
| 171 | Automatic Emergency Light | 15998 |
| 172 | Automatic-Off Timer For CD Players | 15658 |
| 173 | Fully Automatic Emergency Light | 15427 |
| 174 | IR Remote Control | 15356 |
| 175 | Wiper Speed Controller | 15342 |
| 176 | Tiny Dew Sensor | 15333 |
| 177 | Front Door Guard | 15208 |
| 178 | Running Message Display | 15000 |
| 179 | Electronic Scoring Game | 14653 |
| 180 | Magic Lights | 14537 |
| 181 | Telephone-Operated Calling System | 14491 |
| 182 | Ultrasonic Proximity Detector | 13527 |
| 183 | Hearing Aid | 13342 |
| 184 | Automatic Room Power Control | 13087 |
| 185 | School/College Quiz Buzzer | 12949 |
| 186 | Car Anti-Theft Wireless Alarm | 12606 |
| 187 | Simple Short-Wave Transmitter | 12556 |
| 188 | FM Transmitter For Channel Changer | 12454 |
| 189 | Clock Timer | 12436 |
| 190 | Electronic Code Lock | 12304 |
| 191 | Intelligent Switch | 12186 |
| 192 | Digital Volume Control | 12096 |
| 193 | Contactless AC Mains Voltage Detector | 12038 |
| 194 | Automatic Dual-Output Display | 11951 |
| 195 | Parrot-Sounding AC Doorbell | 11832 |
| 196 | Fire Alarm | 11727 |
| 197 | Simple Sensitive Remote Control Tester | 11707 |
| 198 | UPS For Cordless Telephones | 11613 |
| 199 | Electronic Horn | 11499 |
| 200 | Precision 1Hz Clock Generator Using Chip-On-Board | 11478 |
| 201 | Visual AC Mains Voltage Indicator | 11193 |
| 202 | Low-Power Voltage Doubler | 11161 |
| 203 | Smart Phone Light | 11042 |
| 204 | Automatic Temperature Controlled Fan | 10660 |
| 205 | Low Cost Transistorised Inverter | 10535 |
| 206 | AF/RF Signal Tracer | 10506 |
| 207 | Telecom Headset | 10506 |
| 208 | Darkness Controlled Light Switch | 10291 |
| 209 | Bell-Cum Light Controller | 10225 |
| 210 | Ultra Low Drop Linear Regulator | 10183 |
| 211 | Automatic Temperature Controller | 9966 |
| 212 | Simple Intercom Circuit | 9844 |
| 213 | Automatic Telephone Answering Machine | 9720 |
| 214 | Fluid Level Detector | 9468 |
| 215 | Appliance Timer-Cum-Clap Switch | 9428 |
| 216 | Clap Switch | 8872 |
| 217 | Multi-Melody Generator With Instrumental Effect | 8790 |
| 218 | Mobile Shield | 8453 |
| 219 | Short Wave AM Transmitter | 8404 |
| 220 | Flying Saucer | 8391 |
| 221 | Programmable LED Indicator | 8195 |
| 222 | Tank Overflow Preventer | 8016 |
| 223 | Telephone Call Counter | 7978 |
| 224 | Running Lights Effect | 7957 |
| 225 | Infrared Electronic Shooting Game | 7945 |
| 226 | Handy Telephone Receiver | 7917 |
| 227 | Light Fence | 7869 |
| 228 | Low Current, High Voltage Power Supply | 7781 |
| 229 | Telephone Line Vigilant | 7705 |
| 230 | Battery Opeated High Voltage Source | 7694 |
| 231 | Anti-Collision Rear Light | 7653 |
| 232 | Sensitive Temperature Switch | 7520 |
| 233 | Automatic Emergency Torch | 7390 |
| 234 | Watch-Dog for Telephones | 7135 |
| 235 | 7MHz CW/AM QRP Transmitter | 7120 |
| 236 | Handy Zener Diode Tester | 7109 |
| 237 | Digital Dice With Numeric Display | 6935 |
| 238 | Automatic Phase Changer | 6927 |
| 239 | Capacitance Bridge | 6922 |
| 240 | Programmable Door-Bell With Flashing LEDs | 6885 |
| 241 | Auto Reset Over/Under Voltage Cut-Out | 6823 |
| 242 | Four-In-One Burglar Alarm | 6818 |
| 243 | Automatic Switch For Audio Power Amplifier | 6752 |
| 244 | Low Cost Automatic Gate LIght With A Musical Bell | 6715 |
| 245 | Economical Pump Controller | 6699 |
| 246 | Appliance Timer | 6693 |
| 247 | Water Level Controller Using 3-Phase Starter | 6691 |
| 248 | MAT Switch | 6664 |
| 249 | Dancing Lights | 6605 |
| 250 | Divide-By-N Counter Realisation Using ICs CD4033 And CD4017 | 6467 |
| 251 | Ultrasonic Switch | 6345 |
| 252 | Telephone Amplifier | 6288 |
| 253 | Flashing Brakelight | 6214 |
| 254 | 5-Band Graphic Equaliser | 6198 |
| 255 | Ready -To-Use Object Counter | 6071 |
| 256 | A Highly Efficient DC Lamp Dimmer | 6030 |
| 257 | Infrared Firecracker Igniter | 5962 |
| 258 | High and Low Voltage Cutout With Delay and Melody | 5845 |
| 259 | Programmable Priority Time Switch | 5844 |
| 260 | 33-Volt Tunning Voltage | 5771 |
| 261 | Computerised Morse Code Generator/Transmitter | 5704 |
| 262 | Accurate Electronic Stop-Watch | 5607 |
| 263 | Simple Logic Probe | 5443 |
| 264 | Solidstate Relay with Under/Over Voltage Protection | 5400 |
| 265 | Solidstate Auto Power-Off/On Mains Failure | 5221 |
| 266 | Laptop Protector | 5093 |
| 267 | Touch-Sensitive Musical Bell With Timer | 5065 |
| 268 | Desktop Power Supply | 5040 |
| 269 | Ramp Controlled Light | 5002 |
| 270 | Hourly Chime Function Generator | 4734 |
| 271 | Soft Musical Telephone Ringer | 4714 |
| 272 | Programmable Musical Bell | 4703 |
| 273 | Extension Phone Switcher | 4694 |
| 274 | Adjustable Dancing Lights | 4640 |
| 275 | Audio-Visual Extra Ringer For Phone | 4573 |
| 276 | Motorbike Alarm | 4446 |
| 277 | Programmable 8-Digit Code Lock | 4004 |
| 278 | Powerful AM Radio Transmitter | 3485 |
| 279 | Shutter Guard | 3439 |
| 280 | Low Cost Electronic Clock | 3219 |
| 281 | PC Based Digital Clock | 3119 |
| 282 | Seismic Sensor | 3022 |
| 283 | Off-Line Telephone Tester | 2956 |
| 284 | A Low Distortion Audio Pre-amplifier | 2383 |
| 285 | LED Lighting for Christmas | 2358 |
| 286 | Versatile Variable Duration Digital Timer | 2144 |
| 287 | Current Sensor | 2117 |
| 288 | Tacho for Microprocessor Based Drives | 2116 |
| 289 | Add Auto Start To Generators | 1908 |
| 290 | Dice With 7-Segment Display | 1879 |
| 291 | Sound Controlled Flip-Flop | 1716 |
| 292 | Fancy Christmas Light |
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