supply of equipments supply of equipments , supply of industrial electronics and communication engineering practical labs equipments , construct a lamp dimmer using triac light dimmer circuit using diac-triac: - • this unit consists of 110v @ 100ma isolated step-down transformer. • the triac is provided with fuse and snubber protection. • a diac and associated rc components are provided to vary the firing angle. • lamp of 40watts also provided. • input 230v ac mains. • closed type ms box cabinet. , construct and draw the vi characteristics of igbt: - • two variable dc supplies 0 to 12 v&0 to + / -15v @500ma • on panel igbt with circuit diagram • two dual range digital panel meters • required numbers of patch cords and operating manual , construct and draw the vi characteristics of power mosfet: - mosfet characteristics study unit: - • two variable dc supplies 0 to15 v &0 to24 v@ 500 ma, • on panel circuit diagram with mosfet • two dual range digital panel meters. required numbers of patch cords and operating manual. , construct and draw single phase half-controlled bridge converter with resistive load: - single phase half / bridge controlled bridge converter with rload: - • inbuilt firing circuit based on ramp comparator method to trigger 2scr’s with pulse transformer isolation. • firing angle variation from1800 to 00 on a graduated scale. • inbuilt power circuit consists of 2 scr`s and 3 diodes with fuse & snubber protection. • a 24v / 1a ac source as input to bridge. • input 230v ac mains, r-load-25watts closed type ms box cabinet. , construct and design a fan regulator using triac and diac: -fan motor ( 230v ac ) speed control circuit using triac-diac: • this unit consist of 230v@100 ma isolation transformer to observe the waveform on cro. • the triac is provided with fuse and snubber • protection. • a diac and associated rc components are provided to vary the firing angle. • a small instrument fan is provided along with the unit. • a 230 v incandescent lamp is also provided. • mains operated. • screen printed ms panel. instruction manual. , construct and test the performance of series and shunt equalizers with inbuilt power supply and inbuilt speaker and signal source should be connected externally , amplitude modulation and demodulation trainer kit with inbuilt signal sources • af signal generator1 khz • carriergenerator100khz • amplitude modulator • amplitude demodulator • power supply + / -5 v@500 m • required numbers of patch cords and operating manual , construct and test the performance of am linear diode detector • af signal generator • carrier generator 100 khz • amplitude modulator & diode detector • power supply + / -5 v, 500 ma • required numbers of patch cords and operating manual , construct and test the performance of pulse width modulation pwm • af signal generator1 khz • carrier generator 8 & 16*khz • pwm modulator & pwm demodulator • power supply + / -12 v@ 500 ma • required numbers of patch cords and operating manual , construct and test the performance of pulse position modulation ppm • af signal generator1 khz • carrier generator 8 & 16*khz • pwm modulator & ppm modulator • ppm demodulator • power supply + / - 12 v@ 500 ma • required numbers of patch cords and operating manual , frequency response characteristics of two way cross over network kit study of constant k type filters trainer ( 4 types ) • on panel independent lc filter networks ( lpf, hpf, bpf&bsf ) required numbers of patch cords and operating manual. , “lt” trainer kit for determining the directional characteristics of moving coil microphone and dynamic cone loudspeaker specifications: • +12vdc / 100ma. • on board1khz sine wave oscillator provided. • input amplifier stage using tl074. • low pass filter given on board. • ac amplifier given on board. • power amplifier given on board with volume control. • circuit diagram is printed on glass epoxy pcb & different combination of resistance. • test points are brought out on front panel. • provision to connect external function generator experiments can be done: • frequency response of moving coil microphone and loud speaker. • items supplied: • power amplifier trainer • dynamic cone loud speaker • moving coil microphone sound decibel meter => limited