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| Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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DTMF Tone generator/decoder
I need a DTMF tone generator and decoder for a project but dont know the part number. I have seen some part#s like CD22202 but cant get them from ahy where May I also know if the normal telephone contains the generator and decoder may be in one package ? I have some old phones which contains an IC numbered HM 9100A1. Thankx in advance. |
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