I have tried using an IR transmitter and Receiver. But its range was too small. How can a increase it(like that of in a TV remote)?
What is the range of IR LED ? By adding a high frequency carrier wave does its range(operating distance) change? If yes how(briefly explain)? What is the need for high frequency carrier wave?
What is the range of IR LED ? By adding a high frequency carrier wave does its range(operating distance) change? If yes how(briefly explain)? What is the need for high frequency carrier wave?