Self adjusting bias power supply for line powered telephones

Details Self adjusting bias power supply for line powered telephones Self adjusting bias power supply for line powered telephones

H - Electricity

04

M

379/63

H04M 19/00 (2006.01)

Patent

CA 1233581

TITLE SELF ADJUSTING BIAS POWER SUPPLY FOR LINE POWERED TELEPHONES ABSTRACT OF THE DISCLOSURE A DC voltage regulator circuit with capaca- tive filtering for use with line powered telephone instruments or microprocessor based telephones having a requirement for a precision voltage supply to be derived from the telephone line as a power source. Precise regulation also permits use of the present supply in connection with multiplexed liquid crystal displays.

481686

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