Inquiry For Liaison Service
Sector abcEducation And Research InstituteTender ValueN.A.
LocationTamil Nadu - India Ref.No49639966
Closing Date17 - May - 2022
Supply of 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.
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