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AN-10 The Rail to Rail Advantage
| Synopsis: Examples are given to illustrate the technical advantages for a power operational amplifier whose output voltage can closely approach the power supply voltages both for dual and single supply applications. Supporting calculations are given using a dedicated spreadsheet that can be downloaded from the internet.
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AN-12 The Problem With Current Limit
| Synopsis: Traditional current limiting circuits may not offer the operational amplifier the protection it needs to be reliable in an application circuit. The problems associated with one traditional current limiting circuit are analyzed and a new solution is explained featuring the PAD121 Current Limit Accessory module offered by Power Amp Design.
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AN-14 Cooling Power Op Amps
| Synopsis: The article outlines the advantages of active cooling as compared to passive heat sinks in reducing the volume and weight of power op amps in industrial applications. The relative reliability of passive vs. active cooling is summarized. The advantages of pre-assembled amplifier and heat sink combinations are illustrated.
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AN-16 PCB Layout Guidelines for High Voltage Amplifiers
| Synopsis: Standard company design rules for printed circuit boards may not meet the requirements for high voltage amplifiers manufactured by Power Amp Design. The article proposes PCB geometries consistent with successful field applications for high voltage amplifiers.
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AN-18 Motherboard Layout Guidelines for Power Op Amps
| Synopsis: The article targets several high priority goals in the layout of motherboards to support power operational amplifier application circuits. PCB designers who follow the suggestions are assured that the power op amp circuits will perform to their maximum capability.
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| Synopsis: The article provides a step by step guide for beginners using the PAD Power spread sheet, based on Excel, for analyzing power amplifier application circuits for reliability in terms of output transistor junction temperature and heat sink temperature. Some knowledge of the Excel spread sheet is assumed.
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AN-22 Single Supply Operation With Power Op Amps
| Synopsis: The article outlines the problems and solutions for operating power op amps with a single high power supply voltage. Several application circuits are proposed that may help the user reduce system costs while maintaining high performance. Some familiarity with op amp circuits is assumed.
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AN-26 About Power Ratings
| Synopsis: A brief discussion of the meaning of power ratings as they relate to power operational amplifiers
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AN-34 Force & Sense Application for Power Op Amps
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Synopsis: The article details a force and sense application for power op amps using a familiar differential amplifier application for IC small signal circuits. Some familiarity with op amp circuits is assumed.
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AN-38 (Rev C) Fine Tuning Current Limit
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Synopsis: By necessity only a few values of current limiting sense resistors can be supplied with evaluation kits. This application note shows how to achieve intermediate values of current limit with the resistors supplied in our evaluation kits.
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