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STUDY OF SYNCHRO DEVICES SD-01

• Synchro transmitter-receiver pair with calibrated dials
• Locking system for receiver rotor
• Receiver use as control transformer
• Built-in balanced demodulator circuit
• Panel meter for ac/dc voltages
• All internal power from the 220 V/50 Hz mains
• Only an external CRO required

Description

EXPERIMENTS
• Basic characteristics study – stator voltages as a function of the rotor angle using the built-in ac voltmeter. This shows the space variation of the three voltages, VS1S2, VS2S3, and VS3S1, causing rotation of the resultant magnetization in the stator which is fundamental to the error detection process.
• Operation and error study of the transmitter-receiver pair as a simple open loop position control at a very low torque. This is a rarely used application but is used to demonstrate the direction of the resultant magnetic field in the receiver.
• Plotting the error voltage output as a function of the transmitter rotor angle with the receiver rotor locked. Observing the 180° phase reversal around the zero error is significant as this the basic method through which the direction of the error is detected in an ac system
• Use of balanced demodulator to develop dc error signal with appropriate polarity and compare it with the ac error. This block would be needed if a mixed system were to be designed using both dc and ac components.

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