Current regulator pulse dialer with memory retention circuit

Details Current regulator pulse dialer with memory retention circuit Current regulator pulse dialer with memory retention circuit

H - Electricity

04

M

379/26

H04M 1/27 (2006.01) H04M 1/30 (2006.01) H04M 1/31 (2006.01)

Patent

CA 1215486

CURRENT REGULATOR PULSE DIALER WITH MEMORY RETENTION CIRCUIT ABSTRACT OF THE DISCLOSURE A current regulated pulse dialer circuit in- cluding a memory for storing predetermined sequences of telephone numbers, for use in a loop powered pulse dialing telephone. A first current source is connected to an electronic pulse dialer to provide a high impedance across the telephone line during transmission and inter- pulse pause conditions and a second current source is connected to an electronic pulse dialer to maintain the integrity of information stored in the memory portion of the dialer circuitry.

461527

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