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A.C. Position Servo System Trainer Unit

SKU: 2003 Category:


AC Positions Servo System Demonstration Unit is a self contained stand – alone demonstrator, useful in the study & demonstration of the principle & working of a AC Position Servo System. It consists of a potentiometer with calibrated dial as master or input transducer & a rebalance potentiometer to converts output position into a voltage signal along with specially designed two phase AC Servo meter with suitable coupling, feedback path, summing amplifier, power amplifier. Various controls for different parameters are provided. It is a highly accurate, highly sensitive demonstrator with good repeatability, Linearity & fast response. The unit is housed in an elegant cabinet with a well spread intelligently designed circuit layout on the front panel. Multi – coloured test points are provided at various stages in the circuit to observe waveforms & voltages. It is strongly supported by a comprehensive instruction manual complete with theory & operating details.


Principle : AC Position Servo System.

Displacement : Angular ( 00 to 2700 ).

Input Transducer : Command or master potentiometer with calibrated dial ( 00 to 2700 ).

Motor : Specially designed two phase AC Servo motor.

Coupling : Suitable coupling of motor to output rebalance potentiometer into
voltage signal.

Amplifier : Summing amplifier of adjustable gain & power amplifiers for driving
AC motor on basis of error signal.

Amplifier Gain : Controlled by the voltage signal derived by the conversion of the
output position of the rebalance potentiometer into voltage signal.

Output : Slave dial coupled to the servo mechanism & mounted with
calibrated dial ( 00 to 2700 ).

Controls : 1. Master or Command Potentiometer.
2. Potentiometer for zero adjustment to adjust the minimum
( Lower limit of angular displacement ).
3. Potentiometer fro span adjustable to adjust the ( Upper
Limit ) of angular displacement.
4. Potentiometric for gain adjustment.
5. Servomotor ON / OFF control.
6. Mains ON / OFF.

Indicators : 1. Nullmeter ( 3 ? digit digital meter ).
2. Servo Motor ON / OFF.
3. Mains ON / OFF.

Test Points : Provided at various stages in the circuit to observe waveforms &

Power Requirements : 230V + 10% AC, 50Hz 1?.

Standard Accessories : Detailed Instruction Manual.


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