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astable multivibrator using ic 555 timer pdf


Posted by:
Created at: Monday 22nd of October 2012 07:01:28 AM
Last Edited Or Replied at :Wednesday 17th of April 2013 09:42:08 PM
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i need a report on..................[:=> Show Contents <=:]



Using Energy Conversations Technique Automatic Street light control By IC555


Posted by: seminar paper
Created at: Thursday 08th of March 2012 03:44:18 AM
Last Edited Or Replied at :Thursday 08th of March 2012 03:44:18 AM
automatic street light controller using 555 , automatic street light controller using ic 555, project report of automatic street light by using ic 555 , street light controller using 555, ic 555 as sreet light control project report , street light controller with ic555,
r light or not. When darkness rises to a certain value then automatically street light is switched ON and when there is other source of light i.e. day time, the street light gets OFF.
The sensitiveness of the street light can also be adjusted. In our project we have used four L.E.D for indication of bulb but for high power switching one can connect Relay (electromagnetic switch) at the output of pin 3 of I.C 555. Then it will be possible to turn ON/OFF any electrical appliances connected all the way through relay.




Principle:

This circuit uses a p..................[:=> Show Contents <=:]



SIMPLE AUTOMATIC WATER-LEVEL CONTROLLER


Posted by: seminar addict
Created at: Monday 16th of January 2012 03:49:31 AM
Last Edited Or Replied at :Monday 20th of February 2012 04:47:56 AM
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crosses sensor

As water in
the tank rises to
touch sensor H, timer IC2 is retriggered
at pin 6 via inverters N3
and N4 and as a result, its output
goes low. The relay de-energises and
the motor stops filling water in the
tank. The motor remains ‘off’ even
when the water level falls below sensor

As water is consumed and its level
falls below sensor L, the motor restarts.
Thereafter, the cycle repeats.
You can also manually start and
stop the motor using switch S1. 

minal Vcc is at the bottom of the tank,
sensor terminal L is just above the
bottom of the tank and s..................[:=> Show Contents <=:]



a big electronics projects list for diploma or engineering students


Posted by: project topics
Created at: Sunday 08th of May 2011 12:22:24 PM
Last Edited Or Replied at :Friday 01st of July 2011 04:55:49 AM
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NDICATION
597. SINGLE CHIP 0- TO 360 DEGREE - PHASE SHIFTER
598. Password based Access Control System using I2C protocol with stepper motor driving circuit
599. Embedded Rigging free Electronic Voting System with instant results using PIC Microcontroller
600. TOUCH SWITCH CUM HEAT OPERATED SWITCH
601. 2000 VA INTERTER
602. Design and Implementation of Serial Peripheral Interface Using VHDL
603. Controller for Sample bus arbiter
604. ELECTRONIC PHONE LOCK
605. TELELISTEN UNIT FOR LISTENING TV PROGRAMMES
606. WATER TANK GAUGE
607. TWO IN ONE ELECTRONIC GAMES
608. SIMPLE ELECTRONIC ..................[:=> Show Contents <=:]



IC CONTROLLED STREET LIGHT


Posted by: seminar class
Created at: Saturday 23rd of April 2011 05:00:18 AM
Last Edited Or Replied at :Saturday 23rd of April 2011 05:00:18 AM
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rface pasted withcopper track-layout.

• Connection pin is passed through the hole and is soldered.
WORKING
• When light falls on the LDR then its resistance decreases which
results in increase of the voltage at pin 2 of the IC 555.
• IC 555 has got comparator inbuilt, which compares between
the input voltage from pin2 and 1/3rd of the power supply voltage
• When input falls below 1/3rd then output is set high otherwise
it is set low.
• Since in brightness, input voltage rises so we obtain no positive
voltag..................[:=> 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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f operation . Resistors R1, R2 along with capacitor C2 & C3 are required to operate the time properly.
OBSERVATION&ANALYSIS
Electronic eye circuit works as light intensity indicator.
Speaker will be activated.
FUTURE SCOPE
We can increase the range of this equipment by using better sensor.
We can use this as Remote Controller.
MERITS
Low cost
Easy to construct
Portable
Low power consumption
Real time applications
DEMERITS
It is difficult to work with this equipment if there is no sufficient lighting conditions.
Unnecessary disturbances may oc..................[:=> 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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arts Required ¢ resistors: 10k, 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 <=:]



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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s to produce low frequencies at pin 3. This low-frequency output enables IC2 and it also oscillates to produce high frequencies. As a result, sound is produced from the speaker. Using preset VR1 you can control the volume of the sound from the speaker. The circuit can be powered from a9V battery or from mains by using a 9Vpower adaptor. Assemble the circuit on a general purpose PCB and enclose in a suitable cabinet. Install two water-level probes using metal strips such that one touches the bottom of the tank and the other touches the maximum level of the water in the tank. Interconnect the se..................[:=> Show Contents <=:]



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