Remote control for home Appliance
Remote Control For Home Appliances
This is a simple remote control circuit based on infrared sensor IC TSOP1738. TSOP1738 contains photo detector and pre-amplifier both in one package. It is a three terminal device. Pin 1 is for ground, Pin 2 is for power supply and pin 3 is used as output. Pin diagram of TSOP1738 is shown below. Take care while connecting the pins of TSOP1738. Wrong lead connection of TSOP1738 may lead to sensor damage.
CD4017 is a CMOS counter/ divider IC. It takes clock signal from the clock input and turn on the 10 output in sequence each time when it receives clock input pulses. It is the most popular IC and is extremely useful in project like Light Chaser, Matrix Die. Assemble the circuit as shown in circuit diagram and apply power supply. When you press the remote, 38 KHz infrared rays (IR) is generated through remote control (which used as transmitter) and these rays are received by TSOP1738 which act as receiver in our circuit. Then these weak signals at output pin 3 of TSOP1738 are amplified by transistorT1.
Now, these amplified signals are fed into the clock input pin 14 of IC2. Therefore when you press any button on of the remote, clock input pin 14 goes high which provides a clock pulse for the working of IC2. Here after receiving the clock input CD4017 starts its counter from zero (as it has inbuilt counter) and it advances one by one each time pin 14 goes high. Like first we get output from pin 3 that is Q0 and LED1 will glow. When you press the button again from remote, pin 2 of IC2 will become high and LED2 will glow. Indicating that device is on. You have to connect a relay at the outputs. One end of relay should be connected to collector of transistor T2 and another end of relay should be connected to supply.
Circuit Diagram
20,930-Reads
Resistor
Resistor is a passive component used to control current in a circuit. Its resistance is given by the ratio of voltage applied across its terminals to the current
This is a simple remote control circuit based on infrared sensor IC TSOP1738. TSOP1738 contains photo detector and pre-amplifier both in one package. It is a three terminal device. Pin 1 is for ground, Pin 2 is for power supply and pin 3 is used as output. Pin diagram of TSOP1738 is shown below. Take care while connecting the pins of TSOP1738. Wrong lead connection of TSOP1738 may lead to sensor damage.
CD4017 is a CMOS counter/ divider IC. It takes clock signal from the clock input and turn on the 10 output in sequence each time when it receives clock input pulses. It is the most popular IC and is extremely useful in project like Light Chaser, Matrix Die. Assemble the circuit as shown in circuit diagram and apply power supply. When you press the remote, 38 KHz infrared rays (IR) is generated through remote control (which used as transmitter) and these rays are received by TSOP1738 which act as receiver in our circuit. Then these weak signals at output pin 3 of TSOP1738 are amplified by transistorT1.
Now, these amplified signals are fed into the clock input pin 14 of IC2. Therefore when you press any button on of the remote, clock input pin 14 goes high which provides a clock pulse for the working of IC2. Here after receiving the clock input CD4017 starts its counter from zero (as it has inbuilt counter) and it advances one by one each time pin 14 goes high. Like first we get output from pin 3 that is Q0 and LED1 will glow. When you press the button again from remote, pin 2 of IC2 will become high and LED2 will glow. Indicating that device is on. You have to connect a relay at the outputs. One end of relay should be connected to collector of transistor T2 and another end of relay should be connected to supply.
Circuit Diagram
20,930-Reads
Resistor
Resistor is a passive component used to control current in a circuit. Its resistance is given by the ratio of voltage applied across its terminals to the current