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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.
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.
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.
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.
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.
AN-20 Beginner's Guide to PAD Power
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.
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.
AN-24 Eliminating Circuit Noise From Cooling Fans
Synopsis: The article covers the electrical considerations for connecting the cooling fan of Power Amp Design power op amps to the signal circuits.
AN-26 About Power Ratings
Synopsis: A brief discussion of the meaning of power ratings as they relate to power operational amplifiers
AN-28 Power Op Amp Specifications Discussion
Synopsis: The meaning of the performance specifications for power op amps is discussed with tips and insights.
AN-32 Using Evaluation Kits to Implement Parallel Operation
Synopsis: How to use two or more evaluation kits to connect power op amps for parallel operation
AN-34 Force & Sense Application for Power Op Amps
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.
AN-38 (Rev C) Fine Tuning Current Limit
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.
AN-40 Using the CJS01 Cage Jack Strip
Synopsis: This article provides details for using the CJS01 in the assembly operation of circuit boards.
AN-42 Using Evalutation Kits to Implement a Current Source Circuit
Synopsis: Power Amp Design’s evaluation kits are normally configured to build voltage control application circuits, but it is also possible to build a current mode (transconductance) circuit as detailed in this article. Some knowledge of op amp circuit theory is assumed.
AN-44 Connecting Multiple Power Supplies
Synopsis: Power supplies at voltages higher than 60V are becoming scarce. Learn how to connect multiple power supplies to achieve higher voltages or bipolar power supplies for power op amp circuits.