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Power design challenges for Digital Flat TVs
Power design challenges for flat TVs differ significantly from those of CRT TVs. This article offers an overview of the challenges in fitting the power supply into the thin panel format. Details... more...
IR Introduces Protected Three - Phase 600V IC Featuring Extra Channel for PFC or Brake and Ground Fault Protection
International Rectifier today introduced the IRS26302D protected 600V three-phase gate driver IC with ground fault protection. The IC has a seventh gate drive channel for a power factor correction switch or inverter brake, making it well-suited to medium power appliance motor control and many other general-purpose three-phase inverter applications. Details... more...
Perform thermal tests on Class D amps
There are two kinds of amplifiers used to generate the output power, class AB and class D amplifiers. The shift to class D was mainly the result of the introduction of flat-screen LCD and Plasma TVs, in which space was limited and heat dissipation became an issue. Since the thermal test standards were developed when only class output power AB was used, we want to investigate if they are still appropriate for class D. Details... more...