American Avionic Technologies
Senior Electronic Engineer
Aeroflex Apr 1999 - Aug 2011
Senior Engineer
Telephonics Corporation Jun 1975 - Aug 1985
Senior Engineer
Jun 1975 - Aug 1985
Suny Farmingdale
Education:
Adelphi University 1968 - 1972
Bachelors, Bachelor of Science, Applied Physics
Farmingdale State College
Skills:
Rf Semiconductors Pcb Design Embedded Systems Digital Signal Processors Analog
Us Patents
Battery Balancing Including Resonant Frequency Compensation
George Altemose - Stony Brook NY, US Tsvi Lissack - Great Neck NY, US
Assignee:
Aeroflex Plainview, Inc. - Plainview NY
International Classification:
H02J 7/00
US Classification:
320128, 320118
Abstract:
A system for balancing charge between a plurality of storage battery cells within a storage battery. The battery balancing system sense changes, possibly caused by environmental influences, in the overall resonant frequency of charge balancing circuits contained within the battery balancing system. Using a phase locked loop based controller, the battery balancing system compensates for the change in resonant frequency by driving the battery balancing circuits at a frequency that matches the actual sensed resonant frequency of the battery balancing circuits.
Compensation For Parasitic Resistance In Battery Monitoring
A system for balancing charge between a plurality of storage battery cells within a storage battery. The battery balancing system may sense changes, possibly caused by environmental influences, in the overall resonant frequency of charge balancing circuits contained within the battery balancing system and compensate for the change in resonant frequency. Further, the system may correct battery cell voltages monitored by a controller that may include errors due to intrinsic circuit problems, such as parasitic voltage, to reflect an actual voltage of a battery cell.
A system for balancing the charge level of a plurality of electrically coupled battery units. The system configuration may utilize an architecture and/or methodology that is more appropriate for lower power applications. In particular, the present invention, in accordance with at least one embodiment, may provide a battery balancing system that implements low loss charge balancing circuits in a compact configuration suitable for a multitude of applications, such as smaller cell battery balancing. The charge balancing circuits may be incorporated within each battery unit.
George Altemose - Stony Brook NY, US Michael Consi - Lindenhurst NY, US
International Classification:
H02H 3/20
US Classification:
361 86
Abstract:
A system comprises a battery including one or more cells, an energy source, a load, and a battery protection circuit coupled to the battery, the energy source and the load. The circuit determines if the charge of each cell is at/above a predetermined, band gap supplied threshold voltage, which results in disconnecting of the battery from the energy source. The circuit also may determine if the charge of any cell is at/below a second predetermined level, which may result in disconnecting of the battery from the load. The circuit may be radiation-hardened (e.g., via redundancy), through the use of two sets of field effect transistors, two logic gates, two groups of comparator circuits, and two relays. The circuit provides multiply redundant protection comprising: redundantly assessing the overvoltage determination; redundantly triggering battery isolation; and preventing inadvertent isolation and non-charging, occurring absent overvoltage, through redundant first and second relays.
System And Method For Testing The Integrity Of Porous Elements
Scott D. Hopkins - Dryden NY Daniel W. Spencer - Cortland NY Charles P. Lipari - Port Jefferson NY George A. Altemose - Stony Brook NY
Assignee:
Pall Corporation - East Hills NY
International Classification:
G01N 1508 G01N 2914
US Classification:
73 38
Abstract:
An apparatus for detecting defects in porous elements including systems and methods for quantifying acoustic signal data. A transducer receives acoustic signals generated within a test chamber by a porous element. A signal processing device may be included for analyzing the acoustic signals received, for quantifying the acoustic signals, and for correlating the acoustic signals with physical attributes of the porous element.
Dual Hybrid Demand Refrigeration Control Apparatus
George A. Altemose - Stony Brook NY Michael Consi - Deer Park NY Edwin R. Joscelyn - Commack NY William Wiemann - Wantagh NY David B. Giguere - Palos Verdes Estates CA Wilfred J. Gully - Torrance CA Stanley E. Spencer - Palos Verdes Estates CA
Assignee:
Arx, Inc. - Plainview NY
International Classification:
H02P 602 G05D 2300
US Classification:
318471
Abstract:
A refrigeration control apparatus especially adapted for use in conjunction with cryogenic coolers includes a brushless variable speed drive motor for powering a mechanical cooler-compressor and electronic control circuitry coupled to the motor allowing motor speed and hence cooling rate to be responsive to changes in the temperature of the volume sought to be cooled. A signal corresponding to sensed temperature is compared to a reference signal derived from motor speed. The difference therebetween used to vary the duty cycle of a high frequency pulse train. The pulse train is used to modulate the drive current applied to the motor through pulse position switching circuitry to vary the speed of the drive motor. High and low motor speed limits are provided along with sensor failure protection circuitry to insure continuous motor operation between chosen limits.
System And Method For Supercapacitor Charging And Balancing
- Cedar Rapids IA, US George Altemose - Setauket NY, US
International Classification:
H02J 7/00
Abstract:
In an illustrative embodiment, a supercapacitor system includes a common bus and a number of supercapacitor units, each of the supercapacitor units including one or more supercapacitors, coupled to the common bus via a balancing circuit, where each balancing circuit is configured to balance a charge of the one or more supercapacitors in the supercapacitor units by conducting current to supercapacitor units with a lower charge from supercapacitor units with a higher charge over the common bus, each balancing circuit including at least a first switch and a second switch, each switch controlled by a clock signal.
Control Systems And Methods For Synchronizing Cooling Fans
In an illustrative embodiment, a control system to synchronize a number of slave fans to a master fan may include a master voltage controlled oscillator to receive input voltages, rotate master blades of the master fan pursuant to the input voltages, and provide reference synchronization signals; a slave voltage controlled oscillator to receive the input voltages modified by a gain, rotate slave blades of the slave fan at slave fan speed pursuant to the input voltages, and provide slave synchronization signals; and a phase lock loop configured to receive the reference synchronization signals and the slave synchronization signals, provide a comparison between the reference slave synchronization signals, and provide the gain pursuant to the comparison between the reference synchronization signals and the slave synchronization signals.