Ringing signal generator for a subscriber telephone set
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United States of America Patent
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-
Jun 17, 1986
Grant Date -
N/A
app pub date -
Jul 19, 1984
filing date -
Jul 22, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A ringing signal generator for a subscriber telephone set comprising a switch switching the input signal, followed by a phase shifter and two symmetrical amplifiers having a very high output impedance at rest. The lines are driven through isolating capacitors.
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