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Sonsivri > Electronics > Hardware and Tools (Moderator: bbarney) > dtmf generator in asm ...
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jeanninemtv
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« on: September 16, 2007, 04:39:45 04:39 »
couldyou help me?

i need this kind of block to incorporate in a main program in asm previously developed...

Thanks in advance
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ipek
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« Reply #1 on: September 21, 2007, 03:08:30 03:08 »
several search and find my summing big archive
please look at bye...
http://rapidshare.com/files/57130231/Dtmf.rar.html
aprrox 15 mb
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jeanninemtv
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« Reply #2 on: September 22, 2007, 06:33:24 18:33 »
good!!

time to test it

...

Another big dilemma!!!

HOW TO USE CORRECTLY THE TELEPHONE TRANSFORMERS?

I NEED TO SEND TO THE LINE BOTH MY VOICE AND DTMF,,,

CAN ANYONE HELP ME WITH CIRCUITRY?

I KNOW THAT YOU CAN USE DIODE BRIDGE  BUT I THINK IS ONLY FOR TONE TRANSFERRING...

I HEARD FROM AN ENGINEER THAT YOU CAN USE OPTOCOUPLERS AND THE BRIDGE AND ACCHIEVE BEST RESULTS....

BUT I AM NEWBIE IN HARDWARE TELEPHONICS... BUT SOME EXPERIENCED WITH MCU PROG.
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