supply of mechanical trainer kit , supply of mechanical trainer kit , temperature measurement using thermocouple, rtd and thermistor j type thermo couple • high input impedance amplifier • cold junction compensation using lm35 constant current source connected to rtd pt 100 • zero degree voltage source disc type thermistor • amplifier and 31/2 digit display to view the temperature • built in power supplies and wooden closed cabinet • glass thermometer , behavior ofproximity sensors • each of inductive and capacitive type proximity sensor • output drive to relay circuit • built in power supplies and wooden closed cabinet , lvdt • lvdt range ± 10 mm • screw gauge to move the core in lvdt • ac signal source, phase sensitive detector and instrumentation amplifiers • 3 1/2 digit display to view displacement • test points to measure the signals, built in power supplies and wooden closed cabinet , ldr characteristics trainer kit • to carryout ldr characteristics experiment by varying the intensity of the light • provision to vary the light intensity and measuring with lux meter • provision to connect voltmeter and ammeter in the ldr circuit • built in power supply and wooden closed cabinet , speed control of dc motor using optical sensor • 24v dc motor • variable speed circuit • slotted plate fitted in the shaft of the motor • opto interrupter to sense the slot to use the speed of dc motor measured the pulse • frequency to voltage converter circuit • digital display to display the speed • built in power supply • wooden closed cabinet , arduino trainer kit arduino uno: • microcontroller : atmega328p. on board sensor component: • 4no’s of led • 2 no’s of push switch • one number of 5v relay and buzzer • one number of buck converter for 5v • one number of 2 x 16 liquid crystal oscillator (lcd) • one number of mini bread on board sensor module: • one number of ultrasonic sensor module (3cm-100cm) • one number ofsoil moisture sensor • servo motor with potentiometer , test of dc motor using transistor and relay • to test of 5v dc motor using push button, limit switch, transistor and relay • built in power supply and wooden closed cabinet , forward and reverse control circuit for 3 phase induction motor • 10a rotary switch or fwd/rev switch • 3 phase input, fuses • clamp meter for measure each phase of current • screen printed board, ms tube stands => limited