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range or infrared transmitter

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maadi

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hi,
i am doin a project on ucontroller.i have a transmitter & receiver circuit a nd i am cotrolling devices through u controller using these infrared transmitter & receiver. now the prob is of range.when i take transmitter circuit away from receiver(distance=4 inches approx)it does"nt work .help me out
 

afti_khan

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it's very simple. just check the question posted by me. the circuit and the range solutions r gi ven there
 

pangloong

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To do a good wireless control, first have to make sure what frequency u are use. Because high frequency and low frequency have different effect on the circuit. When using in high frequency, the miller effecr will affect the amplifier gain.
 

flatulent

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If you have an oscilloscope you can look at the receiver signal with the transmitter off. This will tell you if there is any interference from the room lights.
 

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