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In simpler terms, a control synchro system is a system in which the transmitted signal controls a source of power which does the usable work. Quite often, one system will perform both torque and control functions. Individual units are designed for use in either torque or control systems.
The rotor of the synchro control transformer is turned by the response shaft, which is geared to the load and so indicates what the position of the load actually is. The synchro compares the actual load position with the ordered position; and, if the two do not agree, it generates an alternating-current signal which is transmitted to the amplifier.
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The Synchro-Ciné was a device, invented by the French inventor Charles Delacommune in 1921, pioneer in the objective of synchronizing the projection of a film with the corresponding sounds. The sounds to be synchronized could be from the words of a narrator, the reading of a score by an orchestra conductor (or by a musician soloist ), or ...
Charles Eugène Edouard Delacommune (Paris, 26 February 1895 – Paris, 14 September 1950) was a French inventor and film producer known by his Synchro-Ciné machine of 1921, a pioneer technical dispositive for audiovisual synchronization, by mechanical procedures and still with the performers playing the music in live, in the same room of the cinema .
Sometimes as a precaution against out-of-step connection of a machine to a system, a "synchro check" relay is installed that prevents closing the generator circuit breaker unless the machine is within a few electrical degrees of being in-phase with the system. Synchro check relays are also applied in places where several sources of supply may ...
Attaching two servos together produced a synchro, where a remote servo's motions were accurately matched by another. Using a variety of mechanical or electrical systems, the output of the synchros could be read to ensure proper movement had occurred (in other words, forming a closed-loop control system).
This gauge is also found installed with most propeller synchronizer and synchrophase systems. Some synchrophase systems use a knob for the pilot to control the phase angle. Operation of propeller synchronization can occur with a primary/secondary approach or with a push/pull technique associated with Type II systems.