power electronics lab equipments , power elctronics lab equipments , line synchronized ramp trigger circuit using ujt with ac load to measure firing angles kit ujt relaxation oscillator circuit, provision to add dc pedestal voltage to the capacitor in the circuit, triggering circuit fo r2scrs using pulse transformer, measure the phase angle of load, 24v lamp ac load using 2scrs, builtin power supply , scr commutation circuit kit provision to charge the capacitance which will be used for voltage commutation, built in power supplies , class a,bcommutation circuits , single phase to single phase cyclo converter kit cyclo converter with divide by 2 supply frequency and divide by 3 frequency, +ve and –ve polarity zero crossing detectors using optocouplers, decade counters to generate required control signals,isolated 4nos. of dc power supplies to trigger the scrs,triggering circuits to trigger the power scrs,power circuit using center tapped transformer, power circuit using 4scrs and12v-0-12v power transformer and resistive load, built in power supply , pwm based step down dc chopper using mosfet/igbt kit pwm ic controller-based step down chopper,output voltage vs dutycycle, load characteristics without feedback, load characteristics with feedback,output voltage vs input voltage with feedback,built in power supply , single phase single pulse / sinusoidal pwm inverter using mosfet/igbt kitsinglepulse 50 hz clock generation,variable duty cycle generation on both half cycles,h bridge power circuit using 4nos. of mosfets,4nos. of individual power supply for gate trigger circuit, built in power supply , on / off control of lamp using solid state relay kit input switch to control the lamp on/off using solid state relay, one ssr module to test with lamp load, builtin power supplies , speed control of ac motor using vfd drive adjustable v/f curve and vector control, keypad and external control of acmotor, builtin modbus (rs-485) pc communication ,suitable for 2hp motor , lamp dimmer circuit using triac kit variable ac power circuit using triac, diac circuit to trigger thetriac in both half cycles,provision to vary the charging time of capacitor, (changing the phase angle also)for the diac => limited