Power Electronics

3 phase AC Voltage Controller Trainer 8553

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SALIENT FEATURES :

 

4         Completely self – contained stand – alone unit.

 

4         Demonstrates the principle and working of 3 f firing circuit using Ramp Comparator:

 

4         Supply required 3φ, 415V, 50 Hz AC.

 

4         Triggering circuit using ZCD, Ramp Generator, Comparator, Logic Circuits and Pulse amplifier.

 

4         Comparison with a reference pot.

 

4         Effect of Various load of R, RL LOAD.

 

4         Test points at various stages in the circuit, to observe the voltages and waveforms.

 

4         Set of required number of Patch Cords provided.

 

4         Housed in an elegant cabinet with a well spread intelligently designed circuit layout on the front panel.

 

4         Strongly supported by a comprehensive manual complete with theory and operating details.

 

 

 

SPECIFICATIONS ARE SUBJECT TO CHANGE DUE TO CONSTANT

DEVELOPMENTS WITHOUT ANY PRIOR NOTICE

Q_8553

 

Full Wave Mid – Point Converter with ‘ R ‘ Load MODEL-8551

8513_miniSALIENT FEATURES :

♦ Completely self – contained stand – alone unit.

♦ Demonstrates the principle and working of Full Wave Mid – Point Converter with ‘R’ Load.

♦ Supply required 230V, 50Hz AC.

♦ Triggering circuit using UJT and Pulse transformer.

♦ Effect of phase control can be observed the firing circuit of Full wave mid point converter with ‘R’ load.

♦ Test points at various stages in the circuit, to observe the voltages and waveforms.

♦ Set of patch cords provided.

♦ Housed in an elegant cabinet with a well spread intelligently designed circuit layout on the front panel.

♦ Strongly supported by a comprehensive manual complete with theory and operating details.

 

Speed Control of Motor using DC Chopper 8548

8548_miniSALIENT FEATURES:

ADTRON’S Speed Control of DC Motor Using Chopper unit is a versatile stand alone unit useful in the study & demonstration of the principle & working of a Speed Control of DC Motor using Chopper. The circuit consists of a Square wave generator, Square to triangular wave generator, Comparator, isolation circuit, Driver circuit & power transistor circuit. A motor load ( L load ) & Lamp ( R load ) load is also provided. It is housed in an elegant metal cabinet with a well spread intelligently designed circuit layout on front panel. Multi – coloured test points are provided at various stages in the circuit to observe voltages & waveforms.

TECHNICAL SPECIFICATIONS

*     Input                    :               230V, 50Hz AC 1φ.

*     Output                 :               Variable DC ( 0 – 12V ) Chopped output.

*     Circuitry             :               Square wave generator, Square to triangle wave generator, Comparator, isolation & driver circuit.

*     Power Circuit    :               Using power transistor.

*     Loads                    :               1.   12V / 1.5 A DC Motor. ( L load )

                                                        2.   12V / 2A Lamp load ( R load ).

*     Controls               :               1.   Mains ON / OFF.

                                                        2.   Frequency Adj.

                                                        3.   Speed Control Adj.

*     Indicator             :               1.   Mains ON.

*     Socket                   :                1.   9 Pin D connector for motor.

                                                          2.   Bulb holder for lamp load.

Experiment :

1.      Study of firing circuit.

2.      Study of chopper circuit with lamp load & observe the effect of frequency

adj.& Speed Control pots.

3.      Study of chopper circuit with motor load & observe the effect of frequency adj. & Speed Control pots.

Thyristor Controller Trainer 8545

SALIENT FEATURES :

ADTRON’S Thyristor Controller Trainer Kit is a versatile self contained stand alone unit useful in the study and demonstration of the principle & working of a thyristor controller with provision for triggering controller for resistive & inductive load, phase shifting arrangement commutation & speed control for both DC & AC mc /s 1 f & 3.

*     It facilitates study of speed control of DC motor & AC motor.

*     The unit is housed in an elegant cabinet with a well spread intelligently designed Circuit Layout on front panel.

*     Multicoloured test points are provided at various stages in the circuit to observe the waveforms and voltages.

*     It is strongly supported by a Comprehensive Instruction Manual complete with theory and operating details.

FOLLOWING EXPERIMENTS CAN BE CONDUCTED ON THE UNIT :

1.      To study the nature and generation of thyristor control signal.

2.      A.C. Phase Control both in 1 f & 3 f, with R and R – L load.

3.      Phase Shifting & Commutation operation both in 1 f & 3 f.

4.      Speed Control of 1/2 HP Universal Motor.

5.      Speed Control of 0.5 HP 1f induction motor.

6.      Speed Control of 0.5 HP 3f induction motor.

 

DC Drive Demonstrator 8544

8544-11 copy_miniSALIENT FEATURES :

ADTRON’S  DC Drive Demonstrator is a versatile standalone unit useful in the study & demonstration of the principle & working of a DC drive. The circuit consists of a ramp generator, comparator, pulse transformer trigger circuit, dynamic breaking resistor, contactor, short circuit, overload & field failure protection. The unit can be operated in five modes, namely, Forward, Reverse armature feedback, open loop, tacho feedback. A 3 pin socket for CRO is also provided for isolation. It is housed in an elegant metal cabinet with a well spread intelligently designed circuit layout on front panel. Multicoloured test points are provided at various stages in the circuit to observe voltages & waveforms.

TECHNICAL SPECIFICATIONS

*     Input                             :             230V, 50Hz AC 1f.

*     Output                          :             Variable DC ( 0 – 230V ).

*     Circuitry                      :             Ramp Generator, Comparator, Pulse transformer trigger circuit, Dynamic breaking resistor, Contactor, Short circuit, Overload, & Field failure protection.

*     Power Circuit             :             Using 2 SCR’s ( 1200V, 25A ) ( i.e. Half bridge ).

*     Feedback                     :             1.    Armature.

                                                               2.    Tacho.

*     Protection                   :             1.    Overload.

                                                               2.    Short Circuit.

                                                               3.    Field Failure.

*     Controls                       :              1.    Speed.

                                                                2.    Direction ( Forward / Reverse ) selector switch.

                                                                3.    Feedback ( Armature – open loop – Tacho feedback ) selector switch.

*     Indicator                     :               1.    Drive ON.

                                                                 2.   +12V.

                                                                 3.   -12V.

                                                                 4.   Trip.

                                                                 5.   Mains ON.

*     Socket                           :                1.   8 pin socket for connecting motor & tacho.

                                                                 2.   3 pin socket for CRO.

*     Display                         :                 1.   3 ½ digit to indicate armature current.

                                                                  2.   3 ½ digit to indicate armature voltage.

                                                                  3.  3 ½ digit to indicate RPM.

*     Motor                           :                 1 HP DC Motor with tacho & loading arrangement.

Experiment :

1.      Study of firing circuit.

2.      Speed control of DC motor with armature feedback.

3.      Speed control of DC motor with tacho feedback.

4.      Forward reverse operation with dynamic breaking.

AC Drive Demonstrator ( 3 f PWM Based ) 8543

8543-18 copy_miniSALIENT FEATURES :

ADTRON’S AC Drive Demonstration Unit is a versatile stand alone unit useful in the study & demonstration of the principle & working of an AC drive. The circuit works on the principle of PWM with frequency & voltage control. A Three phase 1HP AC motor coupled with a Speed Measurement & loading arrangement is also provided. A 3 pin mains socket for connecting the CRO is also provided for isolation. It is housed in an elegant metal cabinet with a well spread intelligently designed circuit layout on front panel. Multi – coloured test points are provided at various stages in the circuit to observe voltages & waveforms.

TECHNICAL SPECIFICATIONS

*     Input                               :           230V, 50Hz A.C 3φ.

*     Output                            :           Variable AC ( 0 to 230V. )

*     Output Frequency     :           Approx. 10Hz to 50 Hz.

*     Circuitry                        :           PWM based circuitry with voltage & frequency control.

*     Power Circuit               :           Using either MOSFET / IGBT.

*     V / F Ratio                     :           Constant.

*     Load                                 :           1HP, 3φ AC motor with Speed Sensor coupled to it & loading arrangement.

*     Controls                          :           1.    Frequency Control.

                                                               2.    Voltage Control.

                                                               3.    START / STOP Switch.

                                                               4.    Fault Reset Switch.

*     Indicator                        :           1.    Mains ON.

                                                               2.    Run.

                                                               3.    Fault.

*     Socket                              :           1.    8 pin socket for connecting motor & Speed Sensor.

                                                               2.    3 pin socket for CRO.

*     Display                            :           1.    3 ½ digit to indicate AC voltage.

                                                               2.    3 ½ digit to indicate speed in RPM.

*     Motor                              :            1HP AC motor 3φ 230V, 50Hz with Speed Sensor & loading arrangement.

Experiments :

1.      Study the PWM firing circuit of an AC drive.

2.      Speed control of AC motor.

AC Drive Demonstrator ( 3 f Cyclo Converter Based ) 8542

SALIENT FEATURES :

ADTON’S  AC Drive Demonstration Unit, 3φ cyclo converter based is a versatile stand alone unit useful in the study & demonstration of the principle & working of an AC Drive for motor control. The circuit consists of firing pulse generator for generating F / 2, F / 3, F / 4 sequence to trigger the SCR’s, firing angle control & power circuit using SCR’s, 0.5 HP AC Motor load provision to connect CRO for isolation. It is housed in an elegant metal cabinet with a well spread intelligently designed circuit layout on front panel. Multi coloured test points are provided at various stages in the circuit to observe voltages & waveforms.

TECHANICAL SPECIFICATIONS

*     Input                                :           230V, 50Hz, AC 3φ.

*     Output                             :           Variable AC.

*     Circuity                           :           Discrete trigger circuit using gates to generate F / 2, F / 3 & F / 4 Sequence.

*     Power Circuit               :            Using SCR’s of 1200V / 25A rating.

*     V / F Ratio                     :            Constant.

*     Load                                 :            0.5 HP, 3φ AC Motor with Speed Measurement

*     Controls                          :            1.      ÷ by frequency selector.

                                                                2.      Firing angle.

*     Indicator                        :            1.      Mains ON.

*     Sockets                            :            1.      8 pin socket for connecting Motor & tacho.

                                                                2.      3 pin socket for CRO.

*     Display                            :            1.       3 ½ digit to indicate AC voltage.

                                                                2.       3 ½ digit to indicate speed in RPM.

*     Motor                              :            0.5 HP AC motor 3 φ 230V, 50Hz with Speed Measurement

Experiments :

1.      Study the Cyclo converter firing circuit.

2.      Speed control of AC Motor.