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NAVY ELECTRICITY AND ELECTRONICS TRAINING SERIES The Navy Electricity and Electronics Training Series. And applications of synchro. FUNDAMENTALS parameters. In most applications, either kind of fail-ure is intolerable. In both respects, synchro, resolver and RVDT/LVDT sensors are unchallenged.

The purpose of this application note is to provide an understanding of the basic differences between True and DDS Arbitrary Waveform Generators. With AWGs, there are two fundamental design variations: DDS (Direct Digital Synthesis) and True (Traditional) Arbitrary Waveform Generators. Each design variation has its own unique advantages and disadvantages. Baby Luv Full Version on this page.

Because the application determines instrument selection, an understanding of the basic differences between True and DDS AWGs is highly beneficial. Polyphase signal generation is required for a broad range of test applications.

For example, it is used in condition monitoring or fault detection systems. These tests require the simulation of three-phase sine waves with line frequencies, ranging from 50 - 800 Hz, where fault conditions or high frequency noise are introduced. Three-phase AC power supplies may be considered; however, they are restricted by bandwidth limitations, cost and the inability to recreate real-world waveforms. TEGAM's 2700A series arbitrary/function generators address the synchronization, phase shift and resolution issues and are ideal for simulating pulse, noise, sensor stimuli, speed profiles or faults. Lightning strikes are a leading cause of damage to wind turbines even though they are designed with a lightning arrestor system that conducts the electricity from the tip of the blade, through the nacelle and down the tower to ground. A damaged turbine must be repaired before it can be returned to service generating electricity.

Part of the repair includes replacing portions of the lightning arrestor system and verifying that it measures less than the specified resistance all while hanging in the air. This application notes describes a unique solution to the problem that makes it easier to perform this test with equipment that weighs far less than the alternatives. This Application Guide discusses the problems encountered when comparing nulls, especially nulls made in the micro-volt and nano-volt regions, between two null meters. Frequently minor differences between two different null meters, the minor differences between instrumentation setups and other environmental issues contribute to those differences.

This Application Guide is written to help a null meter user rationalize the differences and to take corrective actions, where possible, to reduce the differences between readings.

Download Preface to the Synchro/Resolver Conversion Handbook The Synchro/Resolver Conversion Handbook is designed as a practical tutorial and reference source. It discusses the theory of operation of data converter products (synchro, resolver, and linear variable differential transformer [LVDTJ]), performance parameters, and design factors for typical applications.

The subject matter and applications are chosen to be those of greatest interest and concern to the designers, systems engineers, and systems operators with whom DDC has worked over the years. The text treats both DDC's own approach to shaft encoding and other generally accepted techniques. Because various points of view are presented, the Handbook has served well as a teaching aid over the years.

Our first Synchro Conversion Handbook was conceived in 1973 during a series of technical seminars conducted at DDC. It was the first integrated reference source on synchro/resolver data converters. Now after 70,000 copies and as a result of reader comments, as well as recent advances in the state of the art, we decided extensive revisions were needed to better serve the needs of engineers who use synchro/resolver converters. Most of the changes stem from the recent increases in converter performance and functionality. The introduction of the single-chip 16-bit R/D monolithic has forever altered the cost benefit ratio of the competing shaft position encoding schemes in favor of the resolver and type It tracking converter. Other conversion techniques are still described but only for historical completeness and perspective. Since 1968 DDC has been the leader in new product development in the field of synchro/resolver converters.