Chapter 20. -SHIPBOARD ELECTRICAL SYSTEMS 



SYNCHRO 

 TRANSMITTER 



NTERCONNECTING 

 LEADS 



HANDWHEEL 



RECEIVERS 



INDICATOR 



DIALS 



HANDWHEEL 



RECEIVERS 



INDICATOR 



DIALS 



(B) 



Figure 20-27.— Simple synchro system. 



72.38 



human operator may actuate or operate a re- 

 motely located load. 



The output controller of a servomechanism 

 system is the component (or components) in 

 which power amplification and conversion oc- 

 cur. This power is usually amplified by vacuum- 

 tube or magnetic amplifiers and then converted 

 by the servomotor into mechanical motion of 



the direction required to produce the desired 

 function. 



Figure 20-28 shows a simplified block dia- 

 gram of a servomechanism. When the shaft of 

 the input controller is rotated in either direc- 

 tion, a voltage is induced in the rotor of the 

 control transformer. This voltage is fed to the 

 amplifier, where it is sent through the necessary 



517 



