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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 circuit ..................[:=> 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,
ightness of light which is falling on it. It has resistance of about 1mega ohm when in total darkness, but a resistance of only about 5k ohms when brightness illuminated. It responds to a large part of light spectrum.

d) L.E.D:
A diode is a component that only allows electricity to flow one way. It can be thought as a sort of one way street for electrons. Because of this characteristic, diodes are used to transform or rectify 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 poi..................[:=> 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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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 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. 

..................[:=> 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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RGLAR ALARM TO PROTECT YOUR HOME
1015. SWITCH MODE POWER SUPPLY FOR PERSONAL COMPUTER
1016. SPECTECULAR SPECTRA
1017. Wireless DC Motor Speed and Direction Control using RF Communication (PWM & H Bridge)
1018. VHDL implementation of Lossless Data Compression
1019. CHIRPING CIRCUIT
1020. VERSATILE TOUCH PLATE
1021. MAINS LAMB FLASHER WITH ADDED ATTRACTIONS
1022. RECORDING / PLAY INDICATORS FOR CASSETTE TAPE RECORDERS
1023. UTILITY DOOR-BELL
1024. PORTABLE 50 Hz SOURCE
1025. LOW-COST PSYCHEDELIC LIGHTS
1026. Solar based high efficient vacuum cleaner capable of capturing even 40 micr..................[:=> 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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ion for switching.
• When there is a need of light it automatically detects that weather there is need of light or not.
• Light is switched OFF at night and ON at the morning hours.
LDR
• It is a special type of resistance whose value depends on the
brightness of light which is falling on it.
• It has resistance of about 1mega ohm when in total darkness,
but a resistance of only about 5k ohms when brightness illuminated.
• It responds to a large part of light spectrum.
TRANSFORMER
For 9v ac power supply we can use ste..................[:=> 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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An Electronic Eye can even be used in a simple remote control circuit using the backlight of a mobile phone to turn on a device
Once it is installed at the door there is no need to install a call bell.
Only 5V DC power supply is required for operating the circuit.
..................[:=> 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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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, 1..................[:=> 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
liquid level alarm circuit, liquid level Alarm , Alarm, level , liquid, liquid level alarm project , www seminarprojects com thread liquid level alarm, liquid level alarm project report , liquid level, abstract for liquid level alarm using ic 555 , abstract for liquid level alarm using single ic 555, abstract for liquid level alarm using single ic 555 in electronics for you , liquid level alarm using ic 555 ppt, application of liquid vlevel balarm , liquid level alarm on ppt, liquid level alarm ppt , liquid level alarm circuit, liquid level alaram , project for liquid level alarm, water level control using tranaiator , liquid level alarm, liquid level alarm report , essay liquid level alarm project report, liquid level control system ,
r 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 sensor and the ..................[:=> Show Contents <=:]



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