bids are invited for title1 - pn junction diode characteristics with two digital meter , title2 - zener diode characteristics with two digital meter , title3 - transistor characteristics with four digital meters , title4 - fet characteristics with three digital meter , title5 - characteristics with three digital meters and support for the school lab , title6 - plancks constant apparatus , title7 - ultrasonic apparatus and high resolution spectrometer , title8 - energy band gap of semiconductor app. with two digital meter , title9 - ldr characteristics trainer kit with two digital meter , title10 - laser diode characteristics trainer kit with three digital meter and photo detector , title11 - mosfet characteristics trainer kit with two digital meter , title12 - 030v1a dual channel power supply , title13 - function generator 01hz to 1mhz with four digital frequency meter , title14 - phase shift oscillator , title15 - wein bridge oscillators , title16 - hartley oscillator , title17 - colpits oscillator , title18 - vco using 555 , title19 - logic gates , title20 - flip flop trainer kit , title21 - shift resistor trainer kit , title22 - decade and binary counter , title23 - series and parallel resonance trainer kit , title24 - verification of thevenins and norton thermo , title25 - verification of super position and reciprocity thermo , title26 - amplitude modulation and demodulation trainer kit , title27 - amplitude modulation and demodulation trainer kit , title28 - frequency modulation and demodulation trainer kit , title29 - pll trainer kit using ic 565 , title30 - pule amplitude modulation and demodulation trainer kit , title31 - pule width modulation and demodulation trainer kit , title32 - pule position modulation and demodulation trainer kit , title33 - pule code modulation and demodulation trainer kit , title34 - delta modulation and demodulation trainer kit , title35 - measurement of displacement using lvdt , title36 - spectrometer constant deviation , title37