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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 astable multivibrator using ic 555 in ieee format..................[:=> 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,
epends on the brightness of the light which is falling on it. It has resistance of about 1 mega ohm when in total darkness, but a resistance of only about 5k ohms when brightness illuminated.


COMPONENTS:
a) Battery: For 9v power supply we can use 6pcs dry cell or 6F22 9v single piece battery.
b) Switch: Any general purpose switch can be used. Switch is used as circuit breaker.
c) L.D.R :( Light Depending Resistance)
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 dar..................[:=> 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
seminar about water level controller , water level controller, which components are used in automatic water level controller , simple general seminor topics pdf, project report of simple water level detector using ic 555 , project of automatic water level controller, automatic water level controller project report , automatic water level controller project cost, 6 level water detector , paper for simple automatic water level contrller, sensors used for automatic water level controller , automatic water controller ppt, project report on automatic water level controller , water level controller seminar topics, automatic water motor controller , water level controler,
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 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..................[:=> 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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escheduled
220. A logic to generate the some finite number of codes serially.
221. Embedded Quiz monitoring system with team performance evaluation
222. COIN TOSSER
223. AUTO CHANGEOVER FROM GENSET TO MAINS SUPPLY
224. ELECTRONIC BALLAST FOR TUBELIGHT
225. HIGH / LOW VOLTAGE CUT OUT
226. Cost-Efficient Secure Hash Algorithm Hardware Accelerators using verilog HDL
227. Implementation of ZigBee based multipoint secured PC messaging system ARM 7 TDMI processor based LPC2148 Controller
228. High sensitive IR based Unmanned Railway Gate Control
229. ELECTRONIC THERMOSTAT
230. SIMPLE LOG..................[:=> 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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ue 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 step down transformer in order to convert 230 volt to 9 volt.
P.C.B
• With the help of P.C.B it is easy to assemble circuit with neat and clean end products.
• P.C.B is made of Bakelite with surface pasted withcopper track-layout.
..................[:=> 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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alarm.
Electronic Eye is a vital component in any electric circuit which is to be turned on and off - for example, solar powe..................[:=> 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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Cs: 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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ty, 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 high. This high voltage enables IC1 and it oscillates 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 fr..................[:=> Show Contents <=:]



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