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RF based Wireless Remote Control 146,920
Wireless motor control through RF 70,995
Infrared (IR) sensor 63,648
Automatic night lamp 59,851
Traffic light signal 36,566
DTMF Decoder 33,142
Water level controller cum indicator circuit diagram 31,949
Light sensor using photodiode 31,347
Relay activation using TSOP 1738 30,835
Working of light dependent resistor 28,442
Touch switch 27,888
USB Mobile Charger Circuit Diagram 25,679
Audio amplifier 25,057
Intruder alarm / Burglar alarm based Home Security System 23,337
Fire alarm 23,110
Single switch motor on/off.. Clockwise/anticlockwise 22,952
Music (Data) transfer by IR by amplification 22,900
Liquid level Alarm 21,146
Color distinguished using LDR/Color sensor using LDR 19,565
Variable power supply 18,325
Darkness detector 17,646
Generating time delay with 555 IC 17,273
Shadow Alarm using LDR 16,692
Remote Control For Home Appliances 16,574
H-bridge using transistor 16,417
RF based Intruder Alarm 16,331
Water Sensor Circuit 16,129
Remote Controlled Toy Car 16,097
Automatic light/dark indicator 16,017
Power failure alarm 14,255
RF based Fire Alarm (Overheat Alarm) 14,252
2 in 1 Doorbell 13,492
Water Tank Overflow Alarm 13,192
Music (Data) transfer by IR 12,858
Wireless Switch Circuit Diagram 12,640
555 Timer As Amplifier 12,573
Night Lamp using 555 12,308
Light detector 11,602
2-1 Quiz Buzzer 11,452
Long range IR 11,269
Water level indicator with display 11,168
Voltage Doubler Circuit Using IC555 11,150
9-Way Clap Switch Circuit Diagram 10,758
Magic Eye Circuit Using 4049 IC 10,721
Light dependent frequency variation using LDR 10,717
555 Timer IC Tester 10,241
Fixed voltage power supply 9,847
Inverting amplifier using 741 9,830
Seismic sensor 9,586
Bathroom Light Off Timer 9,583
Relay control by sound 9,579
Dancing LED's 9,360
Electronic Letter Box 9,233
Opamp as comparator 9,206
Piezo sensor as input 9,093
Low pass filter 9,054
Transistor Tester Circuit Diagram 8,812
BCD to 7 Segment display Circuit 8,776
Transistor as audio amplifier 8,772
Full range centigrade temperature sensor 8,485
Simple AC to DC converter using bridge rectifier 8,346
Electronic Dice Circuit 8,337
Touch Switch Circuit using 555 Timer 8,250
Overheat/Overcooling circuit breaker 8,159
Bi Color LED 7,890
Astable mode by NAND gate 7,781
Timer Circuit using IC CD 4060 7,751
Led Flasher Circuit 7,629
Active high trigger for 555 in monostable mode 7,441
Relay control through mic 7,183
Vehicle Indicator Circuit 7,019
High Pass Filter Circuit 7,018
Differential amplifier 6,961
Relay operation using Darlington Pair 6,831
Metronome 6,813
Electronic Code Lock Circuit 6,792
Automatic Wash Basin Tap Controller 6,767
Voltage boost by using a resistor with 78XX 6,617
Sound Operated LED 6,536
Electronic Timer Circuit 6,440
Sound Operated Switch 6,325
NAND gate monostable 6,288
IC 555 Based Message Display Circuit 6,165
Electronic alarm for cash box, lockers 6,072
Understanding Decade Counter CD4017 6,069
Security Alarm for Doors, Almirah, cupboards using Opam 6,068
Sound Generation using 555 5,875
90 Second Timer 5,615
NOT gate monostable 5,586
Electronic Door Bell 5,585
Negative supply using 555 IC 5,546
Periodically Turning On & Off Mosquito Repellent Circuit Diagram 5,534
Battery Level Indicator 5,483
Remote Control for Devices using Cell Phone 5,482
Vehicle Indicator 5,456
Luggage Security Alarm 5,308
Refrigerator Door Alarm 5,240
Piezo sensor as output 5,226
Electronic Circuit: Digital Stopwatch 4,992
Tone generator Circuit Diagram 4,924
4 Player Quiz Buzzer 4,863
Non inverting amplifier 4,839
Security System 4,798
CD4049 Based LED torch 4,710
Random Number Generator Using 7 Segment Display 4,666
Understanding JK flip flop using CD4027 4,616
Audio Amplifier using Opam 4,606
Multi Color Lighting 4,534
Voltage Doubler Circuit Using IC 4049 4,447
Coin Toss/Flip Simulator Circuit 4,442
Water Level Indicator with Display 4,422
Parked Vehicle Indicator 4,391
Automatic Fan Speed Regulator 4,374
Night Lamp with Timer for Stairs 4,329
LED Lamp Using CA3140 IC 4,246
CD 4060IC based Message Display Circuit 4,194
Inverting amplifier 4,185
Interfacing 4026 with 7 segment display 4,125
Magic Eye using 555 Timer IC 4,071
Sound generation in audio range 4,069
Secure room access system 4,042
Transistor Based Secret Bell 4,040
Reminder Alarm 4,036
Darkness Detector Alarm 4,033
NE 555 Timer based Automatic Headlight 4,032
Two Way Intercom 3,976
Toggle flip flop using CD4013 3,932
Timer Based Code Lock 3,930
Understanding NOR Gate (CD4001) 3,899
Humidity Detector Circuit 3,868
Conversion of NAND gate to Basic gates 3,784
Variable power supply and charger with emergency light 3,775
Transistor based Security Alarm 3,742
CD 4013 based Sound Sensing Module 3,740
Electronic Code Locking System 3,739
IC555 based Multicolor LED Lamp Circuit Diagram 3,696
Exhaust Fan Circuit Diagram 3,592
Variable Power Supply From Fixed Voltage Regulator 3,572
Safety Alarm Circuit 3,562
Display System used in Restaurant 3,555
Flip Flop based Staircase Switch 3,509
Line Following Robot 3,499
Clock with LED pendulum with tick tock sound 3,446
Fading LEDs 3,399
Soil Moisture Detector 3,326
LDR Based Automatic Lamp 3,313
CD 4013 Based Two Way Switch 3,310
Automatic Power OFF timer for CD player 3,301
IR to RF Converter 3,300
Number Guessing Game 3,233
CD 4027 Based Emergency Lighting System 3,206
LED Based Pendulum Circuit 3,192
Multi-Utility Flashing Light 3,189
Automatic Washroom Light Controller 3,127
Multitone Generator Circuit 3,112
Suitcase Security Alarm 3,086
Remote Tester Circuit 3,058
Timer Circuit using IC 4026 3,039
Polarity cum Continuity Tester 3,037
UM3561 IC Based Security Alarm 2,999
Porch Light (Auto Turn Off Light) Circuit Diagram 2,966
Inverting amplifier with signal feedback 2,950
Curtain Opener Circuit 2,936
CD 4060 Based Security Alarm 2,932
Car Reverse Horn 2,919
Intruder Alarm 2,865
PC Temperature Controller 2,816
Cell Phone Based Multiple Device Controller 2,702
Obstacle Avoiding Robot 2,655
Conversion of NOR gate to Basic gates 2,557
LED Based Stop Watch 2,529
NAND Gate as SR Flip Flop 2,514
Electronic Thermometer for Beverage Temperature Measurement 2,511
Classroom Mic 2,496
Toggle switch using CD4017 2,474
CD4001 IC based Lighting System 2,469
Window and Door Guard with Light Sensor 2,467
Electronic Lock using Switches 2,415
NOR Gate as SR Flip Flop 2,333
Multipurpose Timer With Musical Alarm 2,303
8 Player Quiz Buzzer 2,199
Coin Toss Circuit on 7 Segment Display 2,196
Spell Effect Sign Display Circuit 2,131
Pre Set Off Timer 2,121
Notepad Lamp 2,072
Reaction Timer Game 2,045
Hearing Aid 1,993
"Hit the Target" Game 1,974
Crossing Light Indicator 1,919
Sound Scanner Circuit 1,866
Multi Sound Buzzer 1,852
Electronic Number Game 1,790
Amplifier for Musical ICs 1,717
Direction Pointer 1,395
Logic State Indicator 1,252
Circuit Diagram to Automatically Hibernate your PC 1,221
Auto and Manual Pulse Generator 183
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