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simple touch alarm using ic 555


Posted by:
Created at: Monday 10th of March 2014 05:11:53 PM
Last Edited Or Replied at :Saturday 13th of September 2014 06:31:36 AM
simple touch alarm using ic 555 ,
abstr..................[:=> Show Contents <=:]



abstract of touch alarm using ic 555


Posted by:
Created at: Monday 10th of March 2014 07:56:24 AM
Last Edited Or Replied at :Monday 10th of March 2014 07:56:24 AM
simple touch alarm using ic555 , touch alarm using ic 555, simple touch alarm using ic 555 ,
abstract for touch alarm using ic555
bhavana
i need an abstract fo..................[:=> Show Contents <=:]



simple touch alarm circuit using ic 555 ppt


Posted by:
Created at: Monday 15th of July 2013 10:20:04 AM
Last Edited Or Replied at :Monday 10th of March 2014 05:09:22 PM
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i want circuit diagram and application..................[:=> Show Contents <=:]



MAGIC EYE ALARM


Posted by: seminar class
Created at: Friday 22nd of April 2011 11:27:43 PM
Last Edited Or Replied at :Thursday 20th of June 2013 12:17:18 AM
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K
R3 - LDR
Capacitor : C1 - 0.02MFD
C2-0.1MFD
C3-22MFD 12V
IC : NE555 TIMER
Miscellaneous : Power supply
Speaker
LDR-Light dependent resistor
LDR IC C&R WORKINGS
If The intensity of light is more the resistance of the LDR is less
If The intensity of light is less the resistance of the LDR is more
The heart of the circuit is timer IC555.
which is here acting as oscillator to generate sound whenever shadow is cast on LDR .
Timer 555..................[:=> Show Contents <=:]



CELL PHONE CONTROLLED AUDIOVIDEO MUTE SWITCH


Posted by: seminar class
Created at: Tuesday 15th of March 2011 12:13:49 AM
Last Edited Or Replied at :Wednesday 20th of April 2011 01:46:06 AM
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g currents for these devices begin at 350 mA. The highest efficiency high-power white LED is claimed by Philips Lumileds Lighting Co. with a luminous efficacy of 115 lm/W (350 mA)
• Note that these efficiencies are for the LED chip only, held at low temperature in a lab. In a lighting application, operating at higher temperature and with drive circuit losses, efficiencies are much lower. United States Department of Energy (DOE) testing of commercial LED lamps designed to replace incandescent or CFL lamps showed that average efficacy was still about 31 lm/W in 2008 (tested performance ra..................[:=> Show Contents <=:]



Random Flasher for 8 LEDs Project


Posted by: project topics
Created at: Saturday 03rd of April 2010 10:58:22 AM
Last Edited Or Replied at :Saturday 03rd of April 2010 10:58:22 AM
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47k ¢ 555 timer IC ¢ capacitor: 1µF 16V radial ¢ 4026 counter and display driver IC ¢ LEDs ×8 (any colour) ¢ DIL sockets for ICs: 8-pin, 16-pin

Courtesy:
www.kpsec.freeuk.com..................[:=> Show Contents <=:]



timer circuits using latches


Posted by: naveenchinnu
Created at: Tuesday 23rd of March 2010 08:07:21 AM
Last Edited Or Replied at :Saturday 30th of October 2010 02:16:18 AM
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i need a RTL schematic, verilog code for designing timer circuit using latch..................[:=> Show Contents <=:]



liquid level Alarm


Posted by: electronics seminars
Created at: Saturday 09th of January 2010 06:31:42 AM
Last Edited Or Replied at :Saturday 09th of January 2010 06:31:42 AM
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wired in astable multivibrator mode. TimerIC1 produces low frequency, while timer IC2 produces high frequency. As a result, a beeping tone is generated when the liquid tank is full. Initially, when the tank is empty, transistor T1 does not conduct. Consequently, transistor T2 conducts and pin 4 of IC1 is low. This low voltage disables IC1 and it does not oscillate. The low output of IC1 disables IC2and it does not oscillate. As a result, no sound is heard from the speaker. But when the tank gets filled up, transistor T1 conducts. Consequently, transistor T2 is cut off and pin 4 ofIC1 becomes ..................[:=> Show Contents <=:]



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