electronicsforu.com logo
 
.   S E C T I O N S
 Home
 Circuit Lab
 Technical Articles
 eWebSearch
 Bulletin Board
 Events
 Shopping Plaza
 Circuits On Sale
 EFY MagOnline
 JOBS@EFY
 Advertise with us
 Contact Us
 Site Map
 EFY group

The only search engine dedicated to electronics
Registered Users
Email 
New User?
Forgot Password?

Benefits for registered users
1.Free access to latest circuits in Circuit Lab
2.Free submission of your website(s)
3.Free submission of events
4.Can submit queries in Bulletin Board
5.Can submit articles or weblinks in Technical Articles

Latest Issues


   C I R C U I T     L A B

 

1)  Numeric Water-level Indicator (New)
2)  Versatile Probe (New)

Click to view in order of 'highest hits first'
S No.Circuit NameHits
1Security System Switcher3391
2Electronic Candles4712
3Pyroelectric Fire Alarm5255
4Telephone Call Recorder6994
5DuoPhone8001
6Mini UPS System12919
7Car-Reversing Horn With Flasher6864
8Short-Circuit Protection in DC Low-Voltage Systems5894
9Inverter for Soldering Iron10367
10Transistorised Logic Probe for TTL4314
11Constant-Current Battery Charger12699
12Multitone Siren8635
13Generator Room Light13718
14Liquid Level Alarm17441
15PC Power Manager11854
16Skin Response Meter16908
17Solar Panel based Charger and Small LED Lamp23216
18Electronic Bicycle Lock19604
19Remote-operated Master Switch18803
20USB Power Socket18304
21Triple Power Supply17395
22Smart Hearing Aid12474
23Midnight Security Light24366
24Automated Alarm Circuits17859
25Traffic Baton16939
26Laser-guided Door Opener26437
27Battery-level Indicator26564
28PC Temperature Controller20908
29Traffic Controller24804
30Night Alert23681
31Muscular Stimulator17711
32Wireless Switch50762
33Long-Range IR Transmitter24756
34Electric Window Fence Charger6479
35Three-Phase Appliance Protector16323
36PC Multimedia Speakers28151
37Aquarium Probe18715
38Bicycle Indicator19950
39Poor Man’s Hearing Aid13390
40Portable Lamp Flasher16394
41Staircase Light With Auto Switch-Off21697
42Car Anti-theft Guard25356
43USB Power Booster29153
44Smart Vibration Sensor23504
45Drinking Water alarm35611
46GLOW PLuG CONTROLLER14665
47Versatile CMOS TTL Logic And Clock Probe10671
48Tester For Remote Control22435
49Automatic Low-Power Emergency Light32351
50Mobile Bug50386
51LED Lighting for Christmas34642
52Current Sensor31457
53Seismic Sensor26498
54Dice With 7-Segment Display23686
55Motorbike Alarm30333
56Laptop Protector50980
57Shutter Guard16510
58Desktop Power Supply27027
59Mobile Shield37438
60Infrared Firecracker Igniter26884
61Automatic Phase Changer27562
62Flying Saucer37661
63Anti-Collision Rear Light25882
64Light Fence27733
65MAT Switch24526
665-Band Graphic Equaliser24229
67Clock Timer36986
68Fully Automatic Emergency Light46686
69IR Music Transmitter and Receiver51699
70Electronic Horn33073
71Ultrasonic Proximity Detector37356
72Secret Bell46554
73Variable Power Supply Using a Fixed-Voltage Regulator IC47905
74Appliance Timer-Cum-Clap Switch24420
75Telephone-Operated Calling System35228
76Front Door Guard37395
77Bell-Cum Light Controller23329
78Friendly Charger for Mobile Phones45057
79Hearing Aid31508
80Speed Control of DC Motor Using Pulse-Width Modulation43447
81Remote-Controlled Fan Regulator70135
82Low-Power Voltage Doubler26083
83Parrot-Sounding AC Doorbell25252
84Multi-Melody Generator With Instrumental Effect19389
85School-College Quiz Buzzer18853
86Visual AC Mains Voltage Indicator24215
87Simple Short-Wave Transmitter24841
88Solar Lighting System72502
89Infrared Bug39336
90Picnic Lamp33627
91Versatile Power Supply32289
92Ultrasonic Proximity Detector39563
93Shadow Alarm47238
94IR Burglar Deterrent57420
95Versatile Water-Level Controller43733
96Automatic-Off Timer For CD Players28859
97Heat-Sensitive Switch32823
98Sensitive Vibration Detector30913
99Digital Dice35397
100Remote-Controlled Power-Off Switch56345
101Little Door Guard39136
102Stress Meter41771
103Teleconferencing System44399
104Medium-Power FM Transmitter47018
105Smart Cellphone Holder38814
106Fuel Reserve Indicator For Vehicles35690
107Brake Failure Indicator41325
108Safety Guard30235
109Mains Supply Failure Alarm31696
110Remote Control For Home Appliances92483
111Micromotor Controller43772
112Solar Bug48048
113Simple Digital Security System52234
114Digital Audio/Video Input Selector21004
115Auto Turn-Off Battery Charger56677
116Atmel AVR ISP Dongle40354
117Audio Amplifier for Personal Stereo51425
118Musical Light Chaser45003
119Water-Level Controller76722
120Hit Switch47478
121Fire Alarm Using Thermistor46459
122Electronic Watchdog64961
123Automatic School Bell41446
124Anti-Theft Alarm For Bikes59406
125DC Motor Control Using A Single Switch46737
126Solidstate Remote Control Switch40792
127Flashing-Cum-Running Light37462
128Quality FM Transmitter83802
129Stabilised Power Supply With Short-Circuit Indication36404
130Digital Stop Watch52057
131Cell-Phone-Controlled Audio/Video Mute Switch47295
132PC-Based DC Motor Speed Controller63104
133Child's Lamp50544
134Watchman Watcher45760
135Highway Alert Signal Lamp34444
136Low-Cost Electronic Quiz Table32125
137Mobile Cellphone Charger84438
138Smart Foot Switch39334
139Programmable Timer for Appliances57255
140Anti-Bag-Snatching Alarm33079
141LED-Based Message Display90473
142Multiband CW Transmitter34334
143Automatic Night Lamp With Morning Alarm65483
144Touch Dimmer62626
145Mosfet-Based Preamplifier for FM Radio DXing42845
146Non-Contact Power Monitor30910
147Remote-Operated Musical Bell49216
148Electronic Motor Starter57064
149Telephone Receiver76465
150Washing Machine Motor Controller52089
151Low-Cost Hearing Aid46967
152Over-Under-Voltage Protection of Electrical Appliances36201
153Parallel Telephone With Secrecy and Call Prevention46746
154Voltage-Based Controller For Switches28197
155DTMF Receiver IC MT8870 Tester61393
156Pulse Generator51390
157Infrared Remote Control Timer56988
158Clap Switch99704
159Multi-Switch Doorbell With Indicators32262
160Song Number Display45160
161Lead-Acid Battery Charger With Voltage Analyser65908
162Electronic Security System148983
163Three-Colour Display Using Bicolour LEDs54329
164Ultra-Bright LED Lamp90032
165Computerised Universal Timer44224
166Number Guessing Game40151
167PC-Based Oscilloscope260526
168Intruder Radio Alert System53727
169Flashing Beacon51052
170Knock Alarm68537
171Automated Traffic Signal Controller81259
172Infrared Toy Car Motor Controller208379
173Mains Manager39736
174Crystal-Controlled Time-Base Generator30837
175Mains Operated Christmas Star33858
176Music On-Hold For Telephones39934
177Solidstate Switch For DC-Operated Gadgets32631
178Ding-Dong Bell75013
179IR Remote Switch105216
180Shortwave Transmitter50506
181FM Booster102659
182Laser Torch-Based Voice Transmitter And Receiver81652
183Mobile Phone Battery Charger78994
184Fastest Finger First Indicator56939
185Condenser Mic Audio Amplifier69370
186DarkRoom Timer44149
187Speller Effect Sign Display35668
188Stereo Tape Head Preamplifier For PC Sound Card41810
189A Hierarchical Priority Encoder27283
190Digital Mains Voltage Indicator49858
191Water-Level Controller93717
192Invisible Broken Wire Detector81240
193Anti-Theft Security For Car Audios49939
194Simple Telephone Ring Tone Generator48366
195Versatile Zener Diode Tester40373
196DTMF Proximity Detector67875
197Under-/Over-Voltage Beep for Manual Stabiliser25224
19815-Step Digital Power Supply67831
199Auto Shut-off For Cassette Players And Amplifiers31499
200House Security System142691
201Generation Of 1-Sec. Pulses Spaced 5-Sec. Apart25371
2029-Line Telephone Sharer67007
203Musical ‘Touch’ Bell56401
204Automatic Heat Detector58671
205Single Phase Electronic Starter33405
206Precision Amplifier With Digital Control41568
207Precision Attenuator With Digital Control27209
208Infrared Electronic Shooting Game18703
209Telephone Ringer Using Timer ICs34999
210Blown Fuse Indicator34578
211Automatic Speed-Controller For Fans and Coolers54808
2122-Line Intercom-Cum-Telephone Line Changeover Circuit37096
213Low-Cost PCO Billing Meter40652
214Telephone Line Based Audio Muting And Light-On Circuit25994
215Power-Supply Failure Alarm49032
216Add-On Stereo Channel Selector26661
217Parallel Telephones With Secrecy34218
218Telephone Number Display69222
219Luggage Security System45729
220Precision Digital AC Power Controller35501
221Phone BroadCaster34395
222Telephone Call Meter Using Calculator And COB33625
223Telephone Conversation Recorder44133
224Universal High-Resistance Voltmeter25686
225Protection For Your Electrical Appliances34921
226Simple Code Lock60320
227Time Switch39264
228Digital Speedometer47034
229Long-Range FM Transmitter222195
230Self-Switching Power Supply33690
231Electrical Equipment Control Using PC83763
232Teleremote Control53395
233Low-Cost Transistorised Intercom38269
234Charge Monitor For 12V Rechargeable Lead-Acid Battery68009
235Cordless Phone Backup31543
236Sleep-Switch Cum Wake-up Timer28589
237Simple Analogue To Digital Converter37822
238Dual-Channel Digital Volume Control36125
239Infrared Cordless Headphone74720
240Magnetic Proximity Switch30162
241Simple Low-Cost Digital Code Lock45118
242Ultra Low Drop Linear Regulator16162
243Simple Sensitive Remote Control Tester18994
244Electronic Scoring Game25278
245Tiny Dew Sensor25359
246Electronic Jam56691
247Precision 1Hz Clock Generator Using Chip-On-Board20699
248Digital Switching System35290
24940-Metre Direct Conversion Receiver31358
250Frequency Measurements Using PC33785
251Contactless AC Mains Voltage Detector21464
252PC-Based 7-Segment Rolling Display32454
253Electronic Card-Lock System62017
254Miniature Strobe Light28201
255Automatic Dual-Output Display19926
256CD-ROM Drive As Digital-Audio CD-Player52733
257Clap Remote33093
258Wiper Speed Controller25835
259Water Level Indicator With Alarm51558
260IC Controlled Emergency Light With Charger51676
261Auto Reset Over/Under Voltage Cut-Out7628
262Smart Phone Light21177
263Automatic Emergency Light37938
264Telecom Headset20237
265Automatic Room Power Control29633
266Handy Zener Diode Tester16039
267Telephone Line Vigilant14985
268High and Low Voltage Cutout With Delay and Melody12940
269Colour Sensor39616
270Running Message Display33476
271Low Current, High Voltage Power Supply17755
272Audio-Visual Extra Ringer For Phone10214
273Solidstate Auto Power-Off/On Mains Failure6053
2747MHz CW/AM QRP Transmitter7998
275Intelligent Switch33292
276Fluid Level Detector22072
277Programmable Door-Bell With Flashing LEDs16122
278Clap Switch30775
279Computerised Morse Code Generator/Transmitter6540
280Accurate Electronic Stop-Watch14041
281Magic Lights37775
282Digital Dice With Numeric Display18308
283Sensitive Temperature Switch18672
284Automatic Temperature Controlled Fan28912
285Watch-Dog for Telephones18085
286FM Transmitter For Channel Changer28783
287UPS For Cordless Telephones30982
288Touch-Sensitive Musical Bell With Timer14339
289Programmable LED Indicator20918
290Economical Pump Controller18743
291Fire Alarm36603
292Short Wave AM Transmitter19311
293Automatic Emergency Torch21733
294Ramp Controlled Light13429
295Simple Intercom Circuit25746
296Tank Overflow Preventer25350
29733-Volt Tunning Voltage15119
298Appliance Timer16598
299Electronic Code Lock35909
300Flashing Brakelight17641
 
Home | Circuit Lab | Technical Articles | eWebSearch | Top 100 | Bulletin Board | Events | Circuits On Sale EFY MagOnline | EFY Products | Contact Us | Site Map
Electronics For You | BenefIT | LINUX For You | Information Technology | ePower | Facts For You | electronicsforu.com | efymagonline.com | linuxforu.com | kitsnspares.com | Efytimes.com | efyawards.com |
Copyright 1997-2009 EFY Enterprises Pvt. Ltd. All rights reserved. Privacy policy | Disclaimer.
Website Designed & Maintained by: EFY Digital