Hello all,
I've been working on an IR transmitter/receiver circuit for some time now. I have the correct signal to send to my receiver but I need assistance increasing the range of the system.
I have a 555 timer bursting a signal to this highspeed IR transmission chip:
https://www.electro-tech-online.com/custompdfs/2009/04/TXIRHS_DOC.pdf
The output of the 12F629 chip can only source 25mA (I believe) and I have it running to a power rail. The power rail has 4 setups of a 50ohm resistor and 870nm IR led back to ground.
I have the Vishay TSOP7000 IR receiver modules wired correctly and I can get the two units to talk to each other. However, I can't get over 6-7 feet of range.
I tried to wire in a 2N2222 transistor but couldn't get it to function correctly. I also tried a LM741 Op-amp but it distorted my signal, and a IRF510 Mosfet, but it distorted the signal too.
Can someone show me a schematic or give me guidance on how to push more current through the LEDs? Thank you in advance!
I've been working on an IR transmitter/receiver circuit for some time now. I have the correct signal to send to my receiver but I need assistance increasing the range of the system.
I have a 555 timer bursting a signal to this highspeed IR transmission chip:
https://www.electro-tech-online.com/custompdfs/2009/04/TXIRHS_DOC.pdf
The output of the 12F629 chip can only source 25mA (I believe) and I have it running to a power rail. The power rail has 4 setups of a 50ohm resistor and 870nm IR led back to ground.
I have the Vishay TSOP7000 IR receiver modules wired correctly and I can get the two units to talk to each other. However, I can't get over 6-7 feet of range.
I tried to wire in a 2N2222 transistor but couldn't get it to function correctly. I also tried a LM741 Op-amp but it distorted my signal, and a IRF510 Mosfet, but it distorted the signal too.
Can someone show me a schematic or give me guidance on how to push more current through the LEDs? Thank you in advance!