Advance Electronic Industries

Inverter Using SCR ( Parallel )

SALIENT FEATURES :

Adtron’s Inverter using SCR Trainer, Model – 2032 is a self – contained stand – alone unit useful in the study and demonstration of the principle and working of an Inverter using SCR. It consists of a DC source with UJT triggering circuit of variable frequency along with complementary voltage commutation and AC output. A 15W bulb is given as load. The unit is housed in an elegant metal cabinet with a well spread intelligently designed circuit layout on the 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.

Technical Specifications

Principle : Conversion of DC to AC using SCR’s.

Type of Inverter : Parallel Inverter.

DC Source : 12V DC (Unregulated).

Trigger Circuit : UJT trigger circuit with variable trigger frequency.

Trigger Frequency : 25Hz to 1750Hz (Variable).

Commutation : Complementary voltage type.

Output : AC 10 to 20 Watts (approx.).

Load : 15W lamp.

SALIENT FEATURES :

* Completely self – contained stand – alone unit.

* Demonstrates the principle and different methods of SCR Turn On.

1. Half Wave AC Control

2. Full Wave AC Control

3. UJT Trigger Circuit

4. Transistor Trigger Circuit

* Supply required 230V, 50Hz AC.

* Built – in IC based DC Regulated Supply and LED indication for supply “ON”.

* Built – in Resistive load.

* Connecting each circuit separately and verifying its principle.

* Multicoloured test points are provided to observe the waveform and voltages.

* Set of required number of patch cords.

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

* Strongly supported by a comprehensive instruction manual complete with theory and operating details

A.C. Position Servo ( Servo Stabilizer ) Demonstration Unit

SALIENT FEATURES :

ADTRON’S Servo Stabilizer trainer system is versatile self – contained stand – alone unit useful in the study
and demonstration of the principle and working of a servo stabiliser. 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 the waveforms and voltages. It is strongly supported by a comprehensive
instruction manual complete with theory and operating details.

TECHNICAL SPECIFICATIONS

Capacity : 1 KVA.
Input Voltage Range : 170V to 270V AC.
Output Voltage : 230V (Can be preset from 220V to 240V).
Current Capacity : Max. 4A.
Phase : Single phase.
Frequency Range : 45Hz to 65Hz.
Motor : AC Servo motor coupled to the variac.
Variac : 4A.
Load Regulation : 1%.
Speed Of Correction : Better than 35V / sec.
Waveform Distortion : Nil.
Protection : 1. Under / Over voltage Tripping.
2. Short circuit protection.
Standard Accessories : Detailed Instruction Manual.

• SALIENT FEATURES : * Completely self – contained stand – alone unit.
  * Demonstrates the speed torque characteristics of DC servomotor.
  * Specially designed DC servo – motor with required power supplies.
  * Speed control of DC servo – motor by changing the control voltage.
  * Measurement of the back EMF of a motor coupled to the servo – motor.
  * Loading of the DC servo – motor by a coupled DC motor with variable speed control. ( Variable load).
  * Non contact type tachometer for measuring the speed of the DC servo – motor and is indicated by an analog RPM meter.
  * Current meter to indicate the armature current of the DC servo – motor.
  * Calculation of Torque in terms of current (IA) and back EMF (EB) using the torque formula.
  * Plotting the characteristics of Speed v/s Torque.
  * Multi – coloured test points are provided at various stages in the circuit to observe the voltages and waveforms.
  * Housed in an elegant metal cabinet with a well spread intelligently designed circuit layout on the front panel.
  * Strongly supported by a comprehensive instruction manual complete with theory and operating details.

Technical Specifications

Motor Unit :

Motor                                       :           Series connected universal AC / DC motor of fractional HP.

Power                                       :           50W.

Speed                                      :           860 RPM max.

Voltage                                     :           230V AC or DC.

Transformer                              :           Mains Isolation ( 1 : 1 ).

Mounting                                  :           Motor mounted in a cabinet with dial and pointer.

Connector                                 :           Special connector with wires to connect motor unit to control Unit.

Panel Size                                 :           8” ´ 10”.

SALIENT FEATURES :

* Completely self – contained stand – alone unit.

* Demonstrates the principle and various methods of Forced Commutation of SCR.

1. Self Commutation by resonating load ( Class “A” Method ).

2. Self Commutation by an L C Circuit ( Class “B” Method ).

3. Complimentary Commutation ( Class “C” Method ).

4. Auxiliary Commutation ( Class “D” Method ).

5. External Pulse Commutation ( Class “E” Method ).

* Supply required 230V, 50Hz AC.

* Built-in IC based DC Regulated Supply and LED indication for supply “ON”.

* Built-in load facility in the form of LED’s.

* Connecting each circuit separately and verifying its principle.

* Multicoloured test points are provided to observe the waveform and voltages.

* Set of required number of patch cords.

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

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

Phase Control Using Diac & Triac ( Fan Regulator / Bulb Dimm)

SALIENT FEATURES :

* Completely self – contained stand – alone unit.

* Demonstrates the principle and working of phase control using Diac & Triac.

* Supply required 230V, 50Hz AC.

* Intensity Adjustment potentiometer on panel.

* Lamp as load on panel.

* Diac used as pulse generator for gate trigger of Triac.

* Effect of phase control can be observed on load.

* Test points provided at various stages in the circuit to observe voltages and waveforms.

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

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

SALIENT FEATURES :

* Completely self – contained stand – alone unit.

* Demonstrates the principle and working of a Flasher using SCR.

* Supply required 230V, 50Hz AC.

* Built – in IC based DC regulated power supply with short circuit protection.

* UJT as oscillator with variable triggering pulses.

* Flashing time adjustable.

* Lamp load provided on panel.

* Test points provided on panel at various stages in the circuit to observe the waveforms and voltages.

* Set of required number of patch cords.

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

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

SALIENT FEATURES :

* Completely self – contained stand – alone unit.

* Demonstrates the principle and working of Over Voltage Crowbar protection using SCR.

* Built – in unregulated variable DC power supply.

* Over voltage protection using crowbar technique.

* LED and Buzzer for over voltage indication.

* Variable Crowbar setting or panel.

* Push to break switch to reset the protection circuit.

* The circuit consists of zener, UJT, SCR & other associated components.

* Set of required number of patch cords.

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

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

SALIENT FEATURES :

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.

TECHNICAL SPECIFICATION

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.

A.C. Servo Motor ( Speed - Torque ) Demonstration Unit

SALIENT FEATURES :

* Completely self – contained stand – alone unit.

* Demonstrates the speed torque characteristics of AC servomotor.

* Specially designed AC servo – motor with required power supplies.

* Speed control of AC servo – motor by changing the control winding voltage.

* Reference winding voltage 230 V and control winding is applied variable 230V.

* Measurement of the back EMF of a motor coupled to the servo – motor Loading of the AC servo – motor by

* a coupled DC motor with variable speed control. (Variable load).

* Non – contact type tachometer for measuring the speed of the AC servo – motor and is indicated by an analog RPM meter.

* Current meter to indicate the armature current of the AC servo – motor.

* Plotting the characteristics of Speed v/s Torque.

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

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

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

Salient Features:

Adtron’s AC Synchro Control Transformer is an important member of the synchro family. It is a versatile demonstration unit useful in the study and demonstration of the principle and working of an AC Synchro Control Transformer, in conjunction with AC Synchro Transmitter & Receiver. It is a specialised five terminal, induction type low friction component consisting of a high impedance wound stator. It is mounted with a calibrated dial with two rotor and three stator windings brought out on front panel. The demonstrator is housed in a specially designed user’s friendly elegant cabinet with intelligently designed layout on front panel. It is strongly supported by a comprehensive Instruction Manual complete with theory and operating details.

Technical Specifications

Principle : AC Position control system. AC Synchro Differential Generator.

Displacement : Angular displacement ; Clockwise & Anti – clockwise.

Control Transformer : Specially designed reversible five terminal component with high impedance stator winding.

Mounting : It is mounted with calibrated dial on front panel.

Controls : Control Transformer knob mounted on its shaft.

Test Points : Multi – coloured test points are provided at various stages in the circuit to observe waveforms and voltages.

Power Requirements : It will derive its required power from AC Synchro Transmitter & Receiver.

Standard Accessories : 1. Set of required number of patch cords. 2. Detailed Instruction Manual.

Note :

The AC Synchro Control Transformer requires Adtron’s AC Synchro Transmitter & Receiver demonstrator for performing the experiment.

SALIENT FEATURES :

* Completely self – contained stand – alone unit.

* Demonstrates the principle & working of a full wave rectifier using SCR & UJT.

* Supply required 230V, 50Hz AC.

* Built – in power supply.

* Operation of UJT as relaxation oscillator & its use as SCR trigger circuit.

* Control for UJT trigger pulses.

* Full wave rectification by SCR’s.

* Fixed load provided.

* Observation of output voltage variation with variation in trigger pulses.

* Test points provided at various stages in the circuit to observe the voltage and waveforms.

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

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

SALIENT FEATURES :

* Completely self – contained stand – alone unit.

* Demonstrates the principle of DV/DT limitation of SCR.

* Calculation of Dv / Dt using formula.

* Observation of the pulse on the CRO.

* Supply required 230V, 50Hz AC.

* Built – in IC based DC regulated supply with LED indication for supply ON.

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

* Set of required number of patch cords.

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

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

SALIENT FEATURES :

ADTRON’S Synchro Transmitter and Recevier Demonstrator is versatile self contained stand – alone demonstrating system useful in the study and demonstrations of the principle and working of an AC Synchro Transmitter and Receiver. It consists of a synchro transmitter and synchro receivers, which are specially, designed induction type low friction component consisting of a wound rotor and wound stator. These are mounted with calibrated dials. A step down isolation transformer and a voltmeter are also incorporated. The demonstrator is housed in a specially designed user’s friendly elegant cabinet with intelligently designed layout on front panel. It is strongly supported by a comprehensive instruction manual complete with theory and operating details.

TECHNICAL SPECIFICATION :

Principle : AC Position control system.

AC Synchro Transmitter & Receiver.

ALIENT FEATURES :

Completely self – contained stand – alone unit.

Demonstrates the principle and working of UJT Relaxation Oscillator.

Supply required 230V, 50 Hz AC.

Built – in IC based DC regulated power supply with short-circuit protection and LED indication for supply “ON”.

Operation of UJT as relaxation oscillator and observation of the sawtooth and pulses waveform.

Control for UJT trigger pulses by varying the charging time of emitter capacitance of the UJT. (Frequency 20Hz to 1KHz ).

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

Set of patch cords.

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

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

ALIENT FEATURES :

Adtron’s DC Motor Control Using SCR, Model – 2031 is a versatile self contained stand alone unit useful in the study and demonstrates the principle and working of a DC Motor control using SCR. Full wave AC phase control circuit using UJT and SCR for motor speed control and a PMMC DC motor with pointer are provided. The trainer is housed in a specially designed user’s friendly elegant powder coated metal cabinet with intelligently designed layout on imported acrylic 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 and operating details.

Technical Specifications

Parameter Controlled : Speed.

Motor : PMMC 12V DC.

Type Of Control l : Firing angle of SCR.

Controlled Output : DC voltage, using full wave AC phase control by UJT & SCR.

Mounting : Motor mounted in a separate metal cabinet with front panel and pointer.

Controls : 1. Potentiometer for varying firing angle (speed variation). 2. Mains ON / OFF.

Test Points : Multi – coloured test points are provided at various stages in the circuit to observe the waveforms and voltages.

Indicator : Mains ON / OFF.

Power Requirements : 230V, ± 10% AC, 50Hz, 1f.Panel

Size : 8 inch ´ 10 inch Main unit.

Standard Accessories : Detailed Instruction Manual.

ALIENT FEATURES :

* Completely self – contained stand – alone unit.

* Demonstrates the principle and working of phase controlled rectifier using SCR by various methods.

* Supply required 230V, 50Hz AC.

* Resistance trigger, RC, trigger, UJT trigger – resistance controlled ramp.

* Limited range / full range half wave phase control.

* Limited range / full range full wave phase control.

* SCR’s in inverse parallel configuration.

* Lamp as load is provided on the panel.

* Effect of phase control can be observed on load.

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

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