Electronic Circuits

The circuit is based on two IC's namely NE555 and CD4017 with few more components.  where 555 timer IC is wired as an astable oscillator. CD4017 is a CMOS  counter/ divider IC which takes clock signal from the clock input and turns on the10 output in sequence, each time when it receives clock input pulses. It is the most popular IC and is extremely useful in various project like Light Chaser, Matrix Die.

The circuit is based on two IC's namely NE555 and CD4017 with few more components.  where 555 timer IC is wired as an astable oscillator. CD4017 is a CMOS counter/ divider IC which takes clock signal from the clock input and turns on the10 output in sequence, each time when it receives clock input pulses. It is the most popular IC and is extremely useful in various project like Light Chaser, Matrix Die.

Today we are controlling many appliances with the help of remote like AC, TV or music system. It often happen that remote stops working due to any reason (low  battery or any button of remote becomes faulty). Therefore circuit describes below help you to test your remote to identify that appliance (TV, AC etc) has problem or your remote is not responding. Advantage of circuit- Based on single sensor and hence circuit consumes very less power. Almost every remote can be tested with the help of this circuit as operating frequency of sensor is 38 KHz.  High immunity against ambient light. With little modification in the circuit you can use it to control your home appliances with remote.