8-channel DTMF Link: Encoder
(Summer Circuits 2010 article)
Published in issue 403, July/August 2010
The DTMF encoder circuit shown here is based on the HT9200B tone generator device produced by Holtek and distributed by Futurlec among others. The encoder is complemented by a decoder elsewhere in this publication.
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Click below to download a PDF copy of this article from Elektor magazine.
Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.
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