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sequential timer circuit using ic 555 in wikipedia


Posted by:
Created at: Sunday 28th of October 2012 10:40:56 AM
Last Edited Or Replied at :Friday 18th of July 2014 04:13:11 PM
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hello i want circuit diagram and operation and abstract of sequential timer..................[:=> 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,
tify AC voltage into a DC voltage. Diodes have two connections, an anode and a cathode. The cathode is the end on the schematic with the point of the triangle pointing towards a line.
In other words, the triangle points toward that cathode. The anode is, of course, the opposite end. Current flows from the anode to the cathode. Light emitting diodes, or LEDs, differ from regular diodes in that when a voltage is applied, they emit light. This light can be red (most common), green, yellow, orange, blue (not very common), or infrared.
LEDs are used as indicators, transmitters, etc. Most likely..................[:=> 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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tersors
in the OHT and connected the
power supply, the circuit is ready to
use.

Since Vcc terminal is at the bottom
of the tank, when the water level falls
below sensor L,
timer IC2 is
triggered at pin
2 via inverters
N1 and N2 and
its output goes
high. As a result,
the output
of timer IC2
goes high. Relay


energises and
the motor starts
filling water in
the tank. The
motor remains
‘on’ even when
the water level
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 outpu..................[:=> 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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LISER
905. ULTRASONIC PEST REPELLER
906. ELECTRONIC ANALOGUE MULTIMETER
907. ELECTRONIC IGNITION SYSTEM FOR AUTOMOBILES
908. PC based power distribution monitoring system
909. RAIN DETECTOR
910. 0-24 V REGULATED DC POWER SUPPLY
911. SMOKE ALARM
912. AN AUTOMATIC EMERGENCY LIGHT WITH DUAL LIGHT PROVISION
913. Implementation of solar fridge with fast chilling applications with temperature monitoring
914. CHECK YOUR GRIP WITH THIS GRIPOSCOPE
915. Such as hufffman coding, parity check, etc.
916. Denoising a electrocardiography (ECG) using MATLAB
917. FUNCTION GENERATOR
918. VARIABLE..................[:=> 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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put is set high otherwise
it is set low.
• Since in brightness, input voltage rises so we obtain no positive
voltage at output of pin 3 to drive relay or LED, besides in poor
light condition we get output to energize.
..................[:=> 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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urface
BLOCK DIAGRAM
CIRCUIT DIAGRAM
COMPONENTS

Resistors : R1 - 2.2K
R2 - 100K
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 o..................[:=> 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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segments, the eighth LED is driven by an output that is normally used for driving further counters. The table below shows the sequence for the LEDs. You can use less than eight LEDs if you wish and the table may help you decide which ones to use for your purpose. Resistors are not required for the LEDs because the 4026 IC limits the current to about 5mA for each one.

Parts 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

Courtes..................[:=> 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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water in the tank. Interconnect the sensor and the circuit using a flexible wire...................[:=> Show Contents <=:]



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