Robert W Buck

US Patent:

48498742, Jul 18, 1989

Filed:

Oct 24, 1988

Appl. No.:

7/261070

Inventors:

Robert J. Buck - Dover NJ
Ralph Walk - Madison NJ
Pradhuman S. Zaveri - Bridgewater NJ

Assignee:

American Telephone and Telegraph Company, AT&T Bell Laboratories - Murray Hill NJ

International Classification:

H02P 1324

US Classification:

363 91

Abstract:

A power converter embodying the principles of the invention, and having a positive and negative output utilizes a single magnetic amplifier controller to control two saturable inductor cores utilized to regulate the positive and negative outputs by modulating the positive and negative pulse output of the power converter transformer. The magnetic amplifier controller monitors and sums the two voltage outputs and derives an offset from average representative output signal. This offset from average representative output signal is compared with a reference signal to derive an error signal. A current responsive to the error signal is generated and utilized to periodically reset the two saturable inductor cores and regulate the positive and negative output voltages.

US Patent:

49008790, Feb 13, 1990

Filed:

Oct 3, 1988

Appl. No.:

7/252961

Inventors:

Robert J. Buck - Dover NJ
Helmut H. Landeck - Kelsterbach, DE
Henry J. Luer - Denville NJ

Assignee:

American Telephone and Telegraph Company, AT&T Bell Laboratories - Murray Hill NJ

International Classification:

H01B 702

US Classification:

174120R

Abstract:

An insulation system and method utilizes multiple helically wound insulating tape windings wound on a wire. Each individual insulating tape winding is wound so that each wrap overlaps a specified area of the preceding wrap of the winding.