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ANSWERS TO QUESTIONS Q1. THROUGH Q23.
Figure 4-2A.IC versus standard synchro connections

Neets Module 15-Principles of Synchros, Servos, and Gyros
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4-1 CHAPTER 4 RELATED DEVICES LEARNING OBJECTIVES Upon completion of this chapter, you should be able to: 1.   Compare standard synchro system connections with IC synchro connections. 2.   Describe the operation of a step transmitter and receiver, and list the advantages and disadvantages of a step-transmission system. 3.   Compare the construction and operation of a resolver to those of a transformer, describe the solution of resolution and composition problems by a resolver. Some other devices that logically should be included in this module are the IC synchros, step motors, and resolvers. These are all electromagnetic devices used in various shipboard and aircraft applications. They can be considered as second cousins of the synchro. IC SYNCHROS The engine order telegraph, steering telegraph, rudder-angle indicator, and similar position- indicating systems used on naval ships are usually simple synchro systems. Some ships, however, use IC synchros to transfer such information. These units operate on the same general principle as the synchros we discussed in chapter 1. The interior communication synchro (IC synchro) is gradually being phased out and replaced by standard synchros when replacement is required. However, you will still find some IC synchros in use today. For that reason, you will find some background information on their purpose and theory to be beneficial.  We will present these synchros in very basic form in the following paragraphs. Because of their construction, IC synchros are sometimes called reversed synchros. The primary winding, consisting of two series-connected coils, is mounted physically on the stator. The secondary, consisting of three Y-connected coils, is mounted physically on the rotor.  This is shown schematically in figure 4-1.






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