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Tuesday, July 28, 2009

Isolation Transformers Increase protection of Electronic Systems

Adequate isolation between a power source and a user of electronic equipment ensures the protection of that equipment. Given the high voltages that exist in modern electronic equipment, proper isolation protects an operator from contact with excessive electrical energy when the short circuits occur in the equipment. Isolation transformers have represented a usual solution for providing high isolation in electronic circuitry. Even with the increased use of well-organized, switched-mode power supplies (SMPS), isolation transformers can improve the overall isolation of an electronic design without severe penalties in added size, weight, and cost.

Isolation transformers offer an effective means of meeting the requirements of domestic and international security standards for electronic equipment. In the United States, for instance, such standards are set by the Occupational Safety and Health Administration (OSHA), with product testing performed according to appointed laboratories, such as Underwriters Laboratories (UL). All through Europe, safety standards are established by the International Electrotechnical Commission (IEC), with testing performed by the laboratories of individual member nations, such as the Verband Deutscher Electrotechniker (VDE) in Germany.

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Tuesday, July 14, 2009

Inductors offer cost-effective COTS option

A new series of commercial-of-the-shelf surface mount inductors is designed to provide a cost-effective alternative military specification product.

Gowanda Electronics is now offering a series of commercial-of-the-shelf (COTS) surface mount inductors, which is planned to provide a cost-effective alternative Mil Spec (military specification) products.

This SMRF 1010 series is exclusively designed for applications in military communication, such as space, satellite, radio and global positioning systems, as well as in crystal oscillators and wireless networks where Mil Spec products have traditionally been used due to the lack of commercial equivalents.

These inductors are targets for RF applications requiring wire bond or surface mount inductors that cover around gold-plated terminations on a ceramic base.

The inductors offer design engineers a COTS surface mount equivalent for MIL-C-83446/4 inductors.

The SMRF sequence features inductance from 0.12 to 27uH and current rating from 880 to 120mA.

Applications include RF signal circuitry in communications equipment, test and measurement equipment, medical diagnostic equipment and industrial development equipment.

Further applications include use in telecommunications, navigation equipment, networking, and other computer peripherals, as well as in security systems, instrumentation, barcode and laboratory analysis equipment, aviation equipment, navigation equipment, electronic test equipment and cable TV.

Labels: Inductors offer cost-effective COTS option