Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1986-11-21
1989-11-07
Griffin, Robert L.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
H04B 900
Patent
active
048797626
ABSTRACT:
A power supply circuit, which steps down an input voltage, is provided in an optical repeater for an optical communications path. A DC current supplied from a regulated current supply through a conductor is increased by the power supply circuit before being provided to the amplifier circuit of the optical repeater, so that power consumption is reduced.
REFERENCES:
patent: 4255782 (1981-03-01), Joyce
patent: 4622480 (1986-11-01), Uchimura et al.
patent: 4654769 (1987-09-01), Middlebrook
Hanyuda Ken
Ohara Michimasa
Beek Leslie Van
Fujitsu Limited
Griffin Robert L.
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