The LM324 is a 14 Pin dual in-line Plastic Package chip which has four independent, high-gain, internally frequency compensated operational amplifiers (Op-Amp) designed to operate from a single power source. It is also possible to power this with 4 different power sources .One for each independent Op-Amp inside the chip. This chip can be used as a Power Amplifier , LED Driver , BI-QUAD RC Active Bandpass Filter , Lamp Driver , Pulse Generator , Square wave Oscillator , Driving TTL , Low Drift Peak Detector , zero crossing detector and many ....etc

[:=Read Full Message Here=:]

Here we have explained a dark detector circuit by using 555 timer IC and a LDR (Light Dependent Resistor) which senses the light in surroundings and if it does not find the light, it triggers the IC and glows an LED attached with the circuit. In place of LED we can also use a buzzer or speaker to use it as dark detector alarm. The concept of this circuit is quite simple and based on the working of LDR. So lets first understand more about LDRs.
LDRs are a type resistors made from semiconductor materials to enable them to have their light sensit ....etc

[:=Read Full Message Here=:]

request for synopsis of dark detector circuit using ne555 timer ....etc

[:=Read Full Message Here=:]

Rain alarm is an application which detects the rain water and blows alarm. They are useful devices and play an important role in various industries such as automobile, irrigation, and wireless communication. Desiging a rain alarm system is quite simple and we have designed here a demo rain alarm project with the help of 555 Timer IC.

Components

Rain sensor (Either you can purchase or build yourself)
555 Timer IC
NPN Transistor BC547
Resistors (470, 100k and 1k ohm)
Capacitor (10uf)
Buzzer
Battery 9v

The main component of this rain alarm is ....etc

[:=Read Full Message Here=:]

JJHSFG'JR' SHGSH S GKGSF''RIT;JWIE UAHWDF ASFAJSF JFASJH FAJF FSA SFJSFHJSLA FLAFAJLHLAHSFUSY EF SDFJ;JSDFUEW FH JDLSFDJL;S FS FSD FUSFUGFUELEIWREW I N BV HOHSLS A; JSDUFGD GSVGSV FSUDGFSGFUDSOUA'DS FJDHUFHDUHL;AHSF;
DJDJFH
DJLJDHH
NDFJLSDFHFUEL ....etc

[:=Read Full Message Here=:]

sir give me ppt slides of dark detector and also give idea about project report on dark detector ....etc

[:=Read Full Message Here=:]

To get more information about the topic light dark sensor ciruit please refer the page link below

http://seminarsprojects.net/Thread-lm741-light-dark-sensor-circuit ....etc

[:=Read Full Message Here=:]

LDRs are made from semiconductor materials to enable them to have their light sensitive properties. There are many types but one material is popular and it is cadmium sulphide (CdS). These LDRs or PHOTO REISTORS works on the principle of Photo Conductivity . Now what this principle says is , whenever light falls on the surface of the LDR (in this case) the conductance of the element increases or in other words the resistance of the LDR falls when the light falls on the surface of the LDR. This property of the decrease in resistance for the LD ....etc

[:=Read Full Message Here=:]

to rate this project.. or seminar where is the details of the project.?? ....etc

[:=Read Full Message Here=:]

Sir,
am doing project on Dark sensor using 555 timer..i need to prepare a documentation for how the circuit works and various applications..could you please help me in this regard.. ....etc

[:=Read Full Message Here=:]