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Hejazi
Ali Hejazi, Dubai AE
| Patent application number | Description | Published |
|---|---|---|
| 20080231342 | PROGRAMMABLE CALIBRATION CIRCUIT FOR POWER SUPPLY CURRENT SENSING AND DROOP LOSS COMPENSATION - A circuit for regulating power is disclosed. The present invention provides circuits and methods for current sensing variations, static droop settings, mismatched phase outputs, and temperature variations in a multiphase power regulator. The circuits may include a calibration controller that senses and regulates both a current sensing circuit and the droop in a power regulator over a range of temperatures thus equalizing phase outputs. The present invention includes the schematic organization and implementation of the circuit, the circuit's calibration, its use, and implementation. This invention advantageously provides circuits and methods to properly power a processor or IC chip according to the unique power specifications of the processor or chip. | 09-25-2008 |
| 20080265857 | INTEGRATED FET SYNCHRONOUS MULTIPHASE BUCK CONVERTER WITH INNOVATIVE OSCILLATOR - A power conversion system, preferably a buck converter, having (i) an oscillator, (ii) a pulse width modulator, (iii) and a nonoverlap clock generator and level shifter, wherein the improvement comprises the elimination of an external resistor divider is described. The buck converter can convert input voltage ranging from approximately 3V to 5V down to approximately 0.7-1.0V, 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V without the use of resistor dividers. The voltage input identifiers select one of the possible output settings for flexibility and accuracy. The integrated field emitting transistors can provide a continuous current of at least 6 A. Additionally, peak current mode and an oscillator enable multiphase operation, up to ten buck converters, for up to 60 A output current. The multiphase operation reduces the output inductor size, and number of bulk capacitors. Moreover, the multiphase operation yields higher efficiency and provides high transient response for demanding applications. | 10-30-2008 |
| 20080266909 | CHIPSET FOR ISOLATED POWER SUPPLY WITH NEW PROGRAMMABLE SYNCHRONIZATION ARCHITECTURE - A chipset for an isolated power supply having an innovative oscillator includes a primary controller and a secondary controller. The primary controller can have the control and drive circuitry for the chipset. The secondary controller can provide rectification signals that can be synchronized with a power MOSFET. | 10-30-2008 |
Mohammad Saeid Hejazi, Tabriz IR
| Patent application number | Description | Published |
|---|---|---|
| 20110186448 | DETECTION AND DISCRIMINATION OF TARGET DNA SEQUENCE AND SINGLE NUCLEOTIDE POLYMORPHISM DIRECTLY ON DOUBLE-STRANDED OLIGONUCLEOTIDE AND PCR PRODUCT WITHOUT DENATURATION OF DSDNA SAMPLE BASED ON PNA-DSDNA HYBRID AND UTILIZING PNA PROBE - A method of detection and discrimination of target DNA sequences and of single nucleotide polymorphisms (SNPs) directly on double-stranded DNA (dsDNA) samples without the need for denaturation of the target dsDNAs. This is achieved by the use of a PNA chain as a probe. This probe is self-assembled on a gold electrode; hybridization of the probe with the target dsDNA forms a PNA-dsDNA hybrid. The hybrid is then labeled with a mediator, and the PNA-dsDNA hybridization is monitored. Monitoring of the hybrid formation can be achieved using an electrochemical approach. This method is able to detect and discriminate target DNA sequences and SNPs on ds-oligonucleotides. Furthermore, this method is able to detect and discriminate target DNA sequences and SNPs on double-stranded PCR products. | 08-04-2011 |
Parisa Hejazi, Tehran IR
| Patent application number | Description | Published |
|---|---|---|
| 20100203626 | SOLID STATE FERMENTATION IN MODIFIED ZYMOTIS PACKED BED BIOREACTOR - The embodiments herein provide an improved Zymotis solid-state bioreactor and its operation for cultivation of microorganisms aseptically. In one embodiment, a bioreactor has two compartments containing three cooling plates. These plates have internal baffles instead of cooling tubes. The bioreactor has temperature sensors are loaded at different heights of the outer cooling plates for recoding and monitoring bed temperature during fermentation. Short space between two cooling plates with suitable material construction permits metabolic heat removal by conduction. The distance between two compartments is adjustable manually to achieve the best width. The product is extracted and harvested in the bioreactor using a trickle solvent. All of the on-line data are monitored on screen and recorded in the computer. Microorganisms are cultivated in such a manner that the bioreactor carries out all steps for cultivating microorganisms in an aseptic environment. | 08-12-2010 |