Power supply for telephone equipment memory devices

Details Power supply for telephone equipment memory devices Power supply for telephone equipment memory devices

H - Electricity

04

M

379/63

H04M 19/00 (2006.01)

Patent

CA 1233582

POWER SUPPLY FOR TELEPHONE EQUIPMENT MEMORY DEVICES ABSTRACT OF THE DISCLOSURE A power supply circuit for use in a sub- scriber's telephone that incorporates memory devices for use in repertory dialing, last number recall, and similar functions. This circuit interfaces with the telephone line to provide the data retention supply current needs of volatile static memory de- vices. It also interfaces with the power supply of the associated logic circuitry to supply the needed operating voltage.

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