Andrew Stephen Mihalik

US Patent:

39783936, Aug 31, 1976

Filed:

Apr 21, 1975

Appl. No.:

5/569999

Inventors:

Daniel A. Wisner - Milan MI
Andrew S. Mihalik - Northville MI

Assignee:

Burroughs Corporation - Detroit MI

International Classification:

G05F 150

US Classification:

323 17

Abstract:

An improved switching regulator converts an unregulated DC voltage into a regulated DC output voltage and maintains regulation over the entire range from maximum load current through zero load current. The improved regulator employs a plurality of series switching paths connected between the unregulated DC input and a summing node at a filter capacitor output. Each series switching path includes a power switching element, a catch diode and a series inductor. The other end of the summing node is connected through a current limiting circuit to the DC regulated output, and at least a portion of the voltage at the summing node is fed to a voltage error amplifier and used to control the duty cycle of the series switching elements. Feedback from the current limiting circuit can override the voltage error amplifier control should the maximum current limit be exceeded. The switching control means employs pulse-width modulation for adjusting the duty cycle of the series switching elements, and the technique of pulse-width modulation employed in the present invention is of the constant frequency, variable "ON" time variety, as known in the art.

US Patent:

42290864, Oct 21, 1980

Filed:

Aug 3, 1979

Appl. No.:

6/063465

Inventors:

Jack Beery - Fairport NY
Andrew S. Mihalik - Northville MI

Assignee:

Burroughs Corporation - Detroit MI

International Classification:

G03B 4100
B41B 1300

US Classification:

354 5

Abstract:

A recorder for placing linguistic character information on photosensitive media. The recorder utilizes a small number of selectively energizable light sources, relative motion between the light from those sources and the photosensitive media, and electronics to coordinate sequential flashing of those light sources to such motion to form individual or sequences of linguistic characters on the photosensitive media. The disclosed embodiment is a microfilm camera that places linguistic characters on microfilm in response to externally supplied character data. The microfilm camera includes a camera box and seven discrete, selectively energizable light sources that are fixedly mounted with respect to the camera box. A portion of photosensitive microfilm is fixed at least temporarily with respect to the camera box. A size reduction lens that is in motion for a period of time focuses light from the light sources upon various areas of the microfilm.

US Patent:

20110022897, Jan 27, 2011

Filed:

Apr 15, 2008

Appl. No.:

12/934279

Inventors:

Ray Marshall - Abbots Langley, GB
Thomas Macdonald - Plymouth MI, US
Andrew Stephen Mihalik - Northville MI, US

Assignee:

Freescale Semiconductor, Inc. - Austin TX

International Classification:

G06F 11/26
G06F 9/24

US Classification:

714 40, 713 2, 714E11159

Abstract:

A microcontroller device comprising a receiver component configured to receive a one or more reset signals for the microcontroller device; an identification component configured to identify a source of the or each reset signals received by the receiver component; a time interval determining component configured to determine a length of a time interval in accordance with the identified source of the or each reset signals received by the receiver component; a voltage setting component configured to set a voltage of an output of the microcontroller device to a first value on receipt of a reset signal by the receiver component; and a control component configured to maintain the voltage of the output at the first value for the duration of the determined length of the time interval; and set the voltage of the output to a second value on substantial completion of the determined length of the time interval.