Telephone frequency scrambler circuit diagram
Source: InternetPublisher:萌面大虾 Keywords: circuit diagram telephone line Updated: 2020/08/08
T1 and T2 are used for direct connection to telephone lines . This circuit uses a common speech version algorithm in which one audio signal has a frequency approximately at the inverse center frequency. The LM1496 balanced modulator is used for signals with a differential speaking range of 3.58kHz.
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