microcontroller at 89c51 based infrared remote controlled switch board 4 appliances ....etc

[:=Read Full Message Here=:]

The circuit is made up of Operational amplifier LM741 which is employed like a comparator for sensitive voltage, LDR , Preset VR1 is used to give a reference voltage to the pin 3 which is a non-inverting terminal as well as to LDR and R2 is linked with IC1 at inverting pin 2 along with a few additional components.

It is very simple to understand the working of the circuit. LDR device will not start till we do not pass our hand over it and as a result of it IC1 pin 2 move to high state. And as a result of its low state is achieved by the IC ....etc

[:=Read Full Message Here=:]

wireless switch circuit using cd4027 pdf

Generally appliances that we used in our home are being controlled with the help of devices like switches, senors. However sometimes it is dangerous to have physical contact with these switches. So to overcome these dangers, here we have explained a circuit that needs no physical contact with the appliance. In these circuits all you need is to pass your hand above LDR. As you first pass your hand over LDR the device connected with it started and remain in that state till you again pass your hand abo ....etc

[:=Read Full Message Here=:]

HELLO SIR,
I'M A STUDENT OF B.TECH , FINAL YEAR. I WANT TO WORK ON 12 CHANNEL INFRARED REMOTE CONTROLLED SYSTEM. FOR THIS I'M USING AT89C2051 MICROCONTROLLER. SO, PLEASE PROVIDE THE REQUIRED PROGRAM SO THAT I COULD GIVE A PRESENTATION ON IT .PLAESE HELP AS SOON AS POSSIBLE.
I SHALL BE OBILIGED IF U DO SO.
THANK YOU. ....etc

[:=Read Full Message Here=:]

wireless switch by using opamp cd4027

Wireless switch circuit using CD4027
SUMMARY OF THE PROJECT
Work in wireless switch circuit using CD4027. Using this scheme, you can control any electrical device, just passing a hand over the LST.
DESCRIPTION OF THE PROJECT
Work in wireless switch circuit using CD4027. Using this scheme, you can control any electrical device, just passing a hand over the LST.
These schemes largely depending on the two chips. The first of these is LM714, which is the operational amplifier. This IC is used to increase the v ....etc

[:=Read Full Message Here=:]

his Project ?Infrared Remote Switch? is used to Switch
On/Off an electrical appliances which may be Light, Fan etc
The Remote control used is an ordinary TV remote control
which should be pointed towards the Kit and by pressing
any button the device connected to the system will toggle
on every button press.
The above system is monitored and controlled by the 8 bit
Microprocessor. The Microprocessor continuously monitors
the Infrared sensor and if it sense infrared signal then it
latches the sensor and the microprocessor toggle the load ....etc

[:=Read Full Message Here=:]

i want to know how power can be off and on using microcontroller and how these instructions can be fetched in microcontroller by pc through zigbee module? ....etc

[:=Read Full Message Here=:]

I need components range and type used in this remote power on/off control and current measurement for home electric outlets based on low power embedded board and zigbee communication. And also I want advantage, disadvantage and application..

E.D.Sindhu ....etc

[:=Read Full Message Here=:]

Infrared Remote Control

The transmitter circuit includes IR LED, 2N2222 NPN Silicon Transistor , 2N2907 PNP Silicon Transistor.When the switch S1 presses LED emits IR light. The receiver part mainly consists of LM308 Op Amp IC , LM567 Tone Decoder, and NPN Phototransistor and a relay.

http://pptpdf.net/subcategory.php?categ=unknown&categ_id=1&/Project%20Reports/Electrical-Electronics-Apllied_Electronics-Instrumentation/project%20list1 ....etc

[:=Read Full Message Here=:]

Dear sir, I am doing a project on the infrared remote control circuit design using the IC CD4027 and IC 555 and also a photo modular TSOP 1738 for switching on and also off the household appliances like lights,fans, etc. I need a completed project report for the same with the circuit diagram, whixh i have to submit in my college lab. Please help me as soon as possible as i need it immidiately. Thanking you. ....etc

[:=Read Full Message Here=:]