Telecommunications – Wireless distribution system
Patent
1992-10-28
1995-04-25
Urban, Edward F.
Telecommunications
Wireless distribution system
455298, 455343, 34031002, H04H 114
Patent
active
054107202
ABSTRACT:
A cable TV distribution system in which an AC power signal is generated according to the following steps: (a) generating an AC power signal having at least a positive half-cycle, where the positive half-cycle comprises a rising portion, a falling portion, and a central portion; and (b) limiting the slew rate of the AC power signal within the rising portion to a range of 30 V/ms and 50 V/ms inclusive. Preferably, the slew rate of the AC power signal within the falling portion is limited to the range of -30 V/ms and -50 V/ms inclusive. The AC power signal is preferably generated by a power supply comprising: (a) circuit that generates a first drive signal having a first portion comprising a series of pulses, a second portion comprising a series of pulses, and a third portion comprising a single pulse; (b) a drive circuit that generates a pulsed power signal the timing of which corresponds to the timing of the first drive signal; (c) a transformer; and (d) an output capacitor for integrating the output of the drive circuit.
REFERENCES:
patent: 2240123 (1941-04-01), Shoup et al.
patent: 3064195 (1962-11-01), Freen
patent: 3525035 (1970-08-01), Kakalec
patent: 3525078 (1970-08-01), Baggott
patent: 3943447 (1976-03-01), Shomo, III
Alpha Technologies
Urban Edward F.
Vo Nguyen
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