Experimental Training Equipments-> Advanced Trainers Power Electronics

[1] 2 3 [ Next»]   Click to Enlarge SPEED CONTROL OF DC SHUNT MOTOR USING SCR To study that the speed of the DC shunt motor can be varied using SCR Circuit. The firing circuit is based on Ramp - comparator method. Isolation is provided by pulse Transformer. FEATURES : Works directly on 230V AC mains. Gate drive current of 200mA to trigger wide range of devices. Test points to study the logic circuit Soft start and soft stop feature. Power supply : 12V/500mA Dc motor with Tacho generator setup. Digital Tacho meter Digital multimeter See Enlarge Click to Enlarge SPEED CONTROL OF MOTOR USING SCR To control the speed of the AC motor, hand driller, etc, using SCR. The gate is triggered by diac device to control the speed of motor. The SCR conducts in one direction when it is triggered by positive voltage applied between gate & cathode. The trainer is operated with 230VAC/50Hz mains. Input Supply : 230VAC/50Hz mains operated Dimension : 27cms x 17cms x 10cms Weight : 500gms See Enlarge Click to Enlarge PE- 3 SERIES INVERTER To study the conversion of fixed D.C voltage to an A.C voltage of variable frequency or variable magnitude Study of Gate Triggering circuit using UJT and pulse isolation Transformer. Study of commutating circuits. FEATURES : Built in regulated power supply : +18V /500mA 230V/50Hz mains operated Detailed step by step Instruction Manual Set of patching wires Mains : 230V mains operated Dimension : 27 x 17 x 5cms Casing : Mounted in a sloping FRP cabinet See Enlarge Click to Enlarge DESIGN AND CONSTRUCTION OF OTT FILTERS To construct and study the characteristics of OTT filters using COMC and COML Technical Specifications Built in regulated power supply + 28V /500mA Output power (PO) = 360W Output voltage (EL) = 120V(RMS) Output frequency (f) = 400Hz Rated load power factor (PF) = 0.7 lagging See Enlarge Click to Enlarge TRIGGERING CIRCUIT FOR BRIDGE RECTIFIER USING OP-AMP-780 Study of bridge rectifier using two SCRS The Gate of the SCRS can be triggered by using Industrial op-amp IC 780 By controlling the firing angle of the SCRS during each half cycle the duration of conduction of the SCR is varied and the DC output is controlled in accordance with the setting of the output voltage control. The trigger pulses can be shifted within a phase angle between 0 and 180 This trainer comes with built in regulated power supply (i) + 12V/500mA (ii) 18V AC/500mA (iii) Step by step Instruction Manual (iv) Set of patching wires Mains : 230V mains operated Dimension : 27 x 17 x 5cms Casing : Mounted in a sloping FRP cabinet See Enlarge Click to Enlarge SOLID STATE CONTACTOR USING IC 555, OPTO COUPLER, TRIAC To study that the output of the 555 timer is connected through the High power Triac based opto isolator triggers the Triac which in turn controls the speed of the motor Speed of the motor depends upon the frequency of the 555 Astable Multivibrator output. FEATURES : 230V AC mains +12V/500mA HP AC Motor (not supplied) 4. Tacho meter (not supplied) See Enlarge Click to Enlarge TEMPERATURE CONTROL USING 555 AND THERMISTOR To construct temperature controller circuit using 555 with a thermistor resistor divider The timer turns ON the heating element. Built in regulated power supply: +9V/500mA Input Supply : 230VAC/50Hz mains operated Dimension : 27cms x 17cms x 10cms Weight : 500gms See Enlarge Click to Enlarge ILLUMINATION CONTROLLER USING LDR To study the illumination control using LDR & Triac LDR is connected as RC phase shift circuit applied as control signal to gate The firing of the Triac can be varied using LDR which in turn varies the intensity of the Lamp load FEATURES : + 15V/500mA 30V / AC input 6V Bulb 12V Bulb See Enlarge Click to Enlarge DIGITAL TACHOMETER USING OPTICAL TRANSDUCER The speed of the motor can be varied precise angular positions within the encoder wheel Encoder wheel consists of Infrared LED and photo transistor is called interrupter circuit If you apply voltage to DC motor it rotates. Each slit causes the interrupter circuit to generate a pulse by counting the pulse that is displayed in the display As you increase the DC voltage the speed of the motor increases. +5V /500mA +12V /500mA See Enlarge Click to Enlarge CONSTRUCTION OF VARIABLE DURATION TIMER To design & study the two range 1-10 minute and 10-100 minute variable duration timer using IC 555, IC 4020 The output of the 4020 IC drives the transistor which turns "ON" the relay (i) + 12V/500mA power supply (ii) 230V mains operated See Enlarge Click to Enlarge SEQUENTIAL TIMER USING 555 OBJECTIVES : The objective of this experiment Is to cascade, or connect in series, a pair of 555 timers sequentially light a pair of LEDs. 555 Timer : TIME ON YOUR HANDS: With the monolithic integrated circuit 555 you can get accurate timing ranges of microseconds to hours, independent of supply voltage variations. This versatile device has a large number of interesting practical applications, especially for electronic hobbyists. 1. +5V / 500mA 2. 230V mains operated See Enlarge Click to Enlarge CHOPPER CIRCUIT USING COMPLEMENTRY study that the DC chopper converts a fixed voltage dc supply to a variable voltage d.c supply Study of class A,B, C & D circuits Triggering of chopper circuit is meant by SCR & UJT circuit (i) +18V / 500mA (ii) 230V mains operated See Enlarge Click to Enlarge HALF CONTROLLED RECTIFIER USING PUT Study of V/I characteristics of PUT Study of PUT as relaxation Oscillator (i) +15V/500mA (ii) 230V mains operated See Enlarge Click to Enlarge OBJECT COUNTER WITH BUILT IN MULTIPLEXED DISPLAY To study 4 digit object counter using 555, IC 74928, LDR When an object hits the LDR output of 555 timer goes high 74928 counter activates the display to 0001. (i) +5V /500mA (ii) 230V mains operated. See Enlarge Click to Enlarge CHARGER CIRCUIT FOR LEAD ACID CELL To Study the Lead acid Battery charger using 555. Battery charger for Lead acid cell can be built with a 555 timer at a considerable parts saving over similar circuits. 1. +10V /500mA 2. 230V main operated. See Enlarge [1] 2 3 [ Next»] Go to Top