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Andreu wrote:
Hello, first thanks for your comments and suggestions, and sorry for my tri-post...sometimes thunderbird combined with my nerves make for such nasty things. Regarding the IC, please look at: http://www.qsl.net/va3iul/Homebrew_R...eyer_W9HFM.gif and you will see a CW keyer build around a single IC (MC787P in this case). So yes, such a rare beasts exist ...lol. They consist of a J-K flip-flop and 2 or 3 gates. The problem is that they are dated back from the 70's and doesn't exist anymore, so I was looking for a more current one. These days, people designing an entire circuit around a single IC use a microcontroller. E.g. a PIC or something from AVR. |
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