Battery polarity switch for applying power to a co-axial cable a

Details Battery polarity switch for applying power to a co-axial cable a Battery polarity switch for applying power to a co-axial cable a

1995-06-22

1997-09-09

Wong, Peter S.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

323271, 363 98, H02M 7537

Patent

active

056662815

ABSTRACT:
A switching circuit is provided to process a DC voltage and apply a low frequency AC voltage, having a trapezoidal waveform, to a co-axial cable transmitting the low frequency AC voltage to a load which may be powered by the low frequency AC voltage as well as a DC voltage. In one specific embodiment two of the switches are connected as part of buck regulation circuits to serve a dual purpose of polarity switching and regulation.

REFERENCES:
patent: 4811192 (1989-03-01), Egawa
patent: 4860189 (1989-08-01), Hitchcock
patent: 5001621 (1991-03-01), Zgawa
patent: 5519306 (1996-05-01), Itoh et al.
"Power Electronics: Converters, Applications and Design", N. Monahan et al, publisher: John Wiley & Sons, c1989, pp. 115-116.

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