Inventor

KRISHNAMOORTHY RAVISHANKER

SG57 patents

⚠️ This page may combine multiple inventors who share the name “KRISHNAMOORTHY RAVISHANKER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KRISHNAMOORTHY RAVISHANKER

MARVELL WORLD TRADE LTD

LED-based lamp with user-selectable color temperature

Current balancing circuits for light-emitting-diode-based illumination systems

Phosphor and LED placement for white LED-based lamps

Current balancing for light-emitting-diode-based illumination systems

Current balancing circuits for light-emitting-diode-based illumination systems

Failure prediction in a rotating device

Isolated AC-DC converter with master controller on secondary side and slave controller on primary side

Light emitting diodes generating white light

Current balancing circuits for light-emitting-diode-based illumination systems

Lowest power mode for a mobile drive

System and method for supplying power at startup

Systems and methods for adaptive motor speed control

Systems and methods for programming of a cooling fan arrangement

Apparatuses for controlling operation of a motor of a fan assembly based on an induced voltage or a back electromotive force

KRISHNAMOORTHY RAVISHANKER

Multi-function feedback using an optocoupler

Method to eliminate current surge during spindle spin up

Circuits and methods for multiple programmable memory using one-time programmable memory

Voltage mode using pseudo current limit

Systems and methods for programming of a cooling fan via a serial port communication mode

Circuits and methods for multiple programmable memory using one-time programmable memory

Apparatus and method for controlling speed of a fan via a first control module connected by a cable and/or conductors between a motor and a second control module

Motor spindle control system and method

Systems and methods for adaptive torque adjustment and motor control

Lowest power mode for a mobile drive

Method and apparatus for TRIAC applications

Back-EMF detection for motor control

High-voltage startup circuit

Fan motor control systems

MARVELL INT LTD

Lowest power mode for a mobile drive

Motor spindle control system and method

Method and apparatus for initializing operation of a disk drive

Self configuring voltage regulators

Adaptive brake timing for a brushless motor

Voltage mode using pseudo current limit

Method and apparatus for initializing operation of a disk drive

Short circuit protection circuits and methods

Method and apparatus for initializing operation of a disk drive

Motor spindle control system and method

Method to eliminate current surge during spindle spin up

Motor spindle control system and method

Motor spindle control system and method

LEONG FOO LENG

External disturbance detection system and method for two-phase motor control systems

Motor speed control system and method without pulse-width modulation

External disturbance detection system and method for two-phase motor control systems

CHUI SIEW YONG

Hysteretic inductive switching regulator with power supply compensation

Hysteretic inductive switching regulator with power supply compensation

ST MICROELECTRONICS ASIA

Method and apparatus for controlling a disk drive under a power loss condition

Method of controlling the speed of an arm of a disk drive

ZHANG HONG LIANG

Reducing voltage stress in a flyback converter design

SUTARDJA SEHAT

Geometry of MOS device with low on-resistance