bids are invited for dc-ac experiments module -i. lcr resonance experiment (series and parallel resonance circuit) resonancekit – inductance (selectable 2 values), capacitors (selectable 3 values), resistor (selectable 3 values), digital wide band voltmeter (20 v), signalgenerator (sine, triangular, square and pulse generator)– 1 mhz, setofpatchcords, ii. de-sauty’s bridge de-sauty’s bridge kit – unknown capacitor (3), know capacitor (2), variable resistance set (2), built-in fixed frequency oscillator, built-in digital galvanometer/null detector, set of patch cords iii. anderson’s bridge anderson’s bridge kit – variable resistor (2), variable capacitor (1), fixed frequency oscillator, digital null detector iv. balastic galvanometer – measurement of lcr values ballisticgalvanometer,lampandscalearrangementstandardresistor,powersupply,resistan cebox,rheostat,ammeter,acommutatorkey,asequencekey,capacitanceboxandinductance boxandconnectingwires v. melde’s apparatus (determine the frequency of ac) melde’s tuning fork – heavy metal stand with iron tunning fork stimulated by electromagnet. fits in both transverse and longitudinal formats, melde’s power supply – 8v/3a heavy duty powersupplywithconnectingwires, digital balance – compact size, resolution: 200 gm,range:0.01gm,batteryoperated vi. conversion of galvanometer in voltmeter and ammeter galvanometer,powersupply,resistancebox,rheostat,ammeter, voltmeter&connectingwires vii. temperature coefficient of a resistance of a resister temperaturecoefficientofaresistancekit–withconstantcurrentsource,digitalmicroammeter0-200μa,digitalvoltmeter0-2v,siliconorgalliumarsenidesamples, digitalthermostat– batteryoperatedprobetypedigitalthermometerwithautoofffunction,maxupto300°c, electrickettle–1l,1000w, test tube stand–heavy basest and for sample viii. resistance of a wire using potentiometer 10wireteakwoodpotentiometerwithpenciljockey andgalvanometer,power supply,ammeter,voltmeter,rheostat,resistanceboxandpatchcords ix. diode, zener-diode and led characteristics diode&zenerdiodecharacteristicskit-singlepowersupply0-18/0.2a,digitaldc micro/milli--ammeter(0-200μa/200ma), digitaldcvoltmeter0-20v, semiconductor devices–diode and zener diode with connecting pins, connecting wire- patchcordsof2mm pins of assorted sizes total quantity : 1