Search results for "optocouplers"

Optocouplers are used extensively for high-voltage isolation and electrical noise rejection – two essential requirements for transmitting correct information between different voltage potentials within an electrical system. Such systems must be able to operate reliably for many years when used in industrial, medical, renewable energy environments, and any other system that has a long expected operating lifetime. By Foo Chwan Jye of Avago Techno...

Electrical systems, no matter what their purpose, share three primary requirements: reliable, safe, and long life operation. To ensure safe operation, users must be double insulated from any dangerous high voltages the equipment employs. To ensure reliable and long life operation, control electronics must also be protected from hazards such as electromagnetic interference and voltage spikes. Avago’s optocouplers provide safety and protection un...

Fieldbus (or field bus) is the name of a family of industrial computer network protocols used for real-time distributed control. It is a way to connect instruments in a manufacturing plant. By Vincent CHING and FOO Chwan Jye of Avago Technologies.

The ACPL-x6xL products are optically coupled ultra-low power 10 MBd digital CMOS optocouplers that operate with low power consumption, especially when the light emitting diode operates at low current. When a current is applied to drive the LED, common mode rejection can be affected by leakage paths inherent to the LED. This paper describes the optimization of CMR performance with split limiting resistors at the LED. By YEE Chee Weng and PENG Jia ...

In addition to industrial applications of variable-speed motor drives, the home appliance market is another major area where three-phase pulse width modulated motor control drives are finding increasing application. Innumerable motors can be found in a typical home. Indeed, the quality of life enjoyed today may be directly attributable to the existence of the electric motor. By Jamshed N. Khan, Optocoupler Applications Engineer, Avago Technologie...

Hybrid electric vehicles save fuel because of their electric motor drive. In an HEV, the propulsion system can be configured several ways, for example in the electric motor assisted mode or in the fully electric motor drive mode. For electric motor drive an inverter system is required to deliver powerful and efficient drive to the electric motor.

CT-Concept Technologie has today announced the launch of a new IGBT-driver core designed to suit inverters operating in the power range from 10-75 kVA. The new dual-channel 2SC0106T drivers simplify the design process and provide a cost-effective, high-performance alternative to competing designs based on discrete components and optocouplers.

Isolation components such as optocouplers that are used in applications that have user safety issues as a key aspect must not fail under continuous high-working-voltage bias conditions. Safety hazards exist and human life is at risk when such insulation fails and the high voltages come in contact with the user. To prevent such occurrences, continuous working voltage ratings and test methodologies are regulated by international component standards...

The introduction of electric and hybrid electric vehicles have added high voltage electric modules into the car. The battery stack in a hybrid vehicle can be in excess of 150 V, which is then boosted to a much higher voltage level for the inverter driving the electric motor. By Kenji Yamamoto and Andy Poh of Avago Technologies.

Vishay will be exhibiting its latest semiconductors and passive components in booth 1D-207 at Power System Japan, a focused exhibition on power systems at Techno-Frontier 2013, being held at the Tokyo Big Sight from July 17 to 19, 2013. Vishay will be highlighting industry-leading innovations across all of its product lines that provide increased efficiency and reliability for a wide range of applications.