Electronic network for telephone set

Details Electronic network for telephone set Electronic network for telephone set

H - Electricity

04

M

379/23, 379/73,

H04M 1/00 (2006.01) H04M 1/30 (2006.01) H04M 1/50 (2006.01) H04M 1/58 (2006.01) H04M 1/60 (2006.01)

Patent

CA 1056970

Abstract of the Disclosure A line powered electronic network which utilizes a bridge configuration for connecting a microphone and receiver to a telephone line which provides increased line voltage during operation of an associated tone generator. The network is so constructed that the d-c voltage across the line is increased during operation of the associated tone generator so as to prevent clipping of the tone signals. Each of the d-c feedback paths around the amplifier of the network includes a plurality of R-C networks connected in cascade so as to provide sufficient filtering at low audio frequencies while meeting the overall time constant required for changing the d-c operating conditions of the set. - 1 -

269418

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