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| Robotics Chat Specific to discussions about robots and the making of. |
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30th March 2003, 09:30 AM
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| New Member  |  Interfacing HT9200 to telephone line Hi , Can anyone suggest how to interface the DTMF output of HT9200 IC to the telephone line ...... Thanx - ajit |
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30th March 2003, 04:06 PM
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| Super Moderator  | You can use opto-isolator, isolation transformer or a bridge rectifier to interface your chip to telephone line. Line of warning: Attaching any device to telephone line without permission is illegal.
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