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Infrared audio transmitter and reciever

 
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nikifena



Joined: 11 Dec 2003
Posts: 115
Helped: 8
Location: Bulgaria


Post16 Dec 2004 11:53   Infrared audio transmitter and reciever

I try to search via g00gle, but I don't find nothing good
can someone to help me with circuit?
any ideas ??

Thanks Smile
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silent trigger



Joined: 26 Oct 2004
Posts: 30
Location: Turkey


Post22 Dec 2004 12:14   Re: Infrared audio transmitter and reciever

This circuit is only reciever !


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JJFORTY



Joined: 16 Nov 2004
Posts: 40


Post01 Jan 2005 7:22   Re: Infrared audio transmitter and reciever

I did an optical communication link project for my sencond year at Uni using PWM modulation 5v pk-pk. U can easly stick a mic at the transmiter and a power amp at the receiver for the speaker to transmit and receive audio signals well so I think...

Let me know if you want the diagrams!..

Happy New Year !!! erkkkk i'm drunk,,, heheheheh
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Borber



Joined: 01 Jan 1970
Posts: 1454
Helped: 109


Post01 Jan 2005 10:49   Re: Infrared audio transmitter and reciever

Above circuit is surely not IR receiver. It is some ultrasonic circuit.
This old circuits might help.



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sajal1975



Joined: 25 Mar 2005
Posts: 121
Helped: 3


Post18 Apr 2005 15:54   Re: Infrared audio transmitter and reciever

hi,
u can find useful data at
www.discovercircuits.com/F/freespace.htm
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jcarlos



Joined: 09 Mar 2004
Posts: 25
Helped: 1


Post21 Apr 2005 16:15   Re: Infrared audio transmitter and reciever

Hi,

Here are some links with information regarding IR topics I hope this could help

http://www.picbasic.nl/indexes_uk.htm
http://links.epanorama.net/links/irremote.html
http://www.irda.org/
http://alanyates.com/irctrl/

Regards
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JJFORTY



Joined: 16 Nov 2004
Posts: 40


Post20 Jun 2005 17:39   Re: Infrared audio transmitter and reciever

Hi..

I developed this project at college a few years back.. I hope it is useful for anybody out there.. it is based on (PWM) Op-amps and a comparator. Freq 100hz - 10Khz but can be altered using different combinations for LP/HP Filters. Clean and undistorted auido transmission.



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fuat_09



Joined: 19 May 2006
Posts: 17
Location: TURKEY


Post19 May 2006 18:18   Re: Infrared audio transmitter and reciever

very simple circuits


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cae20452



Joined: 17 Dec 2005
Posts: 20


Post16 Jun 2007 22:06   Re: Infrared audio transmitter and reciever

tsh 511(stereo-RX) - tsh 512(stereo-TX) (infrared audio) from stmicroelectronic .


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josesitocg



Joined: 02 Nov 2005
Posts: 10
Helped: 1


Post24 Aug 2007 3:57   Re: Infrared audio transmitter and reciever

im developing a Infrared FM transmission project with the particularity that i have to modulate (FM) a wav file in matlab getting it out from the soundcard to a infrared transmission circuit so that i will demodulate the signal in a receiver circuit without using the computer.

I have reviewed many circuits and im kinda lost in this topics so PLEASE HELP ME
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Eugen_E



Joined: 29 Nov 2004
Posts: 318
Helped: 30


Post24 Aug 2007 13:43   Re: Infrared audio transmitter and reciever

In the receiver, for FM demodulation you can use the CD4046 PLL circuit, fed with the signal from the IR sensor.
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rushirajdhar



Joined: 31 Jan 2008
Posts: 11


Post03 Feb 2008 7:39   Infrared audio transmitter and reciever

hey may i try mini project as this ckt

just tell me aproximate cost
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ypnayak



Joined: 20 Apr 2006
Posts: 97


Post03 May 2008 6:21   Re: Infrared audio transmitter and reciever

i am unable to oper receiver .doc
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prince_iut



Joined: 17 Feb 2008
Posts: 55


Post07 May 2008 8:48   Infrared audio transmitter and reciever

specify the values of equipments
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