hi friend you can refer these page to get the details on Antisleep alarm for students

http://seminarsprojects.net/Thread-antisleep-alarm-for-students ....etc

[:=Read Full Message Here=:]

The gas leakage alarm circuit operates off a 9V PP3 battery.
Zener diode ZD1 is used to convert 9V into 5V DC to drive the
gas sensor module. A preset in the module is used to set the
threshold. Interfacing with the sensor module is done through a
4-pin SIP header.
Whenever there is LPG concentration of 1000 ppm in the
area, the OUT pin of the sensor module goes high. This signal
drives timer IC 555, which is wired as an astable multivibrator.
The multivibrator basically works as a tone generator.
Output pin 3 of IC 555 is connected ....etc

[:=Read Full Message Here=:]

To get full information or details of working and principle of antisleep alarm for student please have a look on the pages

http://seminarsprojects.net/Thread-antisleep-alarm-for-students?pid=53288#pid53288

if you again feel trouble on working and principle of antisleep alarm for student please reply in that page and ask specific fields in working and principle of antisleep alarm for student ....etc

[:=Read Full Message Here=:]

To get full information or details of antisleep alarm using microcontroller please have a look on the pages

http://seminarsprojects.net/Thread-anti-sleep-alarm-for-students-mini-project-report

http://seminarsprojects.net/Thread-antisleep-alarm-for-students

http://seminarsprojects.net/Thread-antisleep-alarm-for-students

if you again feel trouble on antisleep alarm using microcontroller please reply in that page and ask specific fields in antisleep alarm using microcontroller ....etc

[:=Read Full Message Here=:]

looking for antisleep alarm for students functioning ?
looking for antisleep alarm for students functioning ? ....etc

[:=Read Full Message Here=:]

While actually giving in to our body s natural wants such as sleep, we re keeping the balance beam in an upright and neutral position generally a good thing to do. But life comes and calls quite often, many times forcing us to put hunger, drowsiness, and other basic human needs on the back burner in order to seal the deal and get the job done.

So here s the scenario, you re sitting in your car getting ready for a big meeting that if completed will net your company nice little multi-billion dollar deal. You re supposed to be going over ....etc

[:=Read Full Message Here=:]

to get information about the topic intelligent traffic control system related topic refer the page link bellow

http://seminarsprojects.net/Thread-intelligent-ambulance-for-city-traffic-and-gsm-to-sent-the-status-of-the-patient-to-t

http://seminarsprojects.net/Thread-intelligent-ambulance-for-city-traffic-and-gsm-to-sent-the-status-of-the-patient-to-t?page=4 ....etc

[:=Read Full Message Here=:]

how the 3 transistors drive the buzzer to produce a beep tone and how the buzzer will off again?
why cd 4020 is used instead of ic 555 timer? ....etc

[:=Read Full Message Here=:]

Abstract

The project is designed as a security system based on photo sensing arrangement. It uses a 14- stage ripple carry binary counter to sense the light intensity through LDR. The output drives a buzzer and a relay for necessary action. This concept is very useful to deter burglars from banks, malls, jewellery stores and also in homes. The system is based on an electronic eye: it is an LDR sensor, called light dependant resistor. When light falls on the sensor, its resistance drastically decreases which lead to triggering an alarm to al ....etc

[:=Read Full Message Here=:]

i am not able to get proper output by given circuit. Is there in any change required to be made in circuit.Please inform me as soon as possible. My email id is [email protected] ....etc

[:=Read Full Message Here=:]