ADTRON’S DC position Servo System Demonstration Unit is a versatile self – contained stand – alone demonstrator, useful in the study and demonstration of the principle and working of a DC position Servo System. It consists of a common potentiometer with calibrated dial as master or input transducer and a rebalance potentiometer to convert output position into a voltage signal along with specially designed DC motor with suitable coupling, feedback patch, summing amplifier, preamplifier and power amplifier. Various controls for different parameters are provided It is a highly accurate, highly sensitive demonstrator with good repeatability, linearity and 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 and voltages. It is strongly supported by a comprehensive instruction manual complete with theory & operating details.
Principle : DC Position Servo System
Displacement : Angular (00 to 2700)
Input Transducer : Command or master potentiometer with calibrated dial (00 to 2700)
Motor : Specially designed bi – directional, geared, permanent magnet armature controlled DC motor.
Coupling : Suitable coupling of motor to output re – balance potentiometer.
Amplifiers : Summing amplifier of adjustable gain pre – amplifier and power amplifier for driving DC on basis of error signal.
Amplifier Gain : Controlled by the Voltage signal derived by the conversion of the output position of rebalance potentiometer into voltage signal.
Output : Slave dial coupled to the servo mechanism and mounted with calibrated dial (0 deg to 270 deg ).
Controls : 1. Master or command potentiometer.
2. Potentiometric for zero adjustment.
3. Potentiometric for span adjustment to adjust the minimum ( lower limit ) & maximum ( upper limit ) of angular displacement.
4. Potentiometric for gain adjustment.
5. Servo Motor ON / OFF control.
6. Mains ON / OFF.
Indicators : 1. Nullmeter ( Digital 3.5 Digit )
2. Servo Motor ON / OFF.
3. Mains ON / OFF.
Test Points : Provided at various stages in the circuit to observe waveforms and voltages.
Power Requirements : 230V, ± 10% AC, 50Hz, 1f.
Standard Accessories : Detailed Instruction Manual.