tender for purchase of lab equipments , purchase of lab equipments , acidity test kit specifications: ethyl alcohol sodium carbonate solution universal indicator solution laboratory-grade test tubes droppers colour comparison chart for test result comparison chemicals supplied in labelled containers with safety instructions suitable for laboratory educational and testing applications , three phase resistive load specifications: rating: 5.25 kw supply: 415 v ac, 3-phase, 50 hz total number of load steps: 6 main switch to be provided approximate dimensions: 18 × 18 × 22 inches (l × b × h) comprising special cement-insulated electrical load resistors mounted on powder-coated ms panel/enclosure individual on/off rotary switches for load selection mounted on rubber wheels/casters for portability suitable for laboratory load testing applications proper insulation, ventilation, and earthing arrangement to be provided , three phase capacitor bank specifications: 3-phase capacitor bank rating: 2 kvar voltage: 440 v ac frequency: 50 hz heavy duty self-healing capacitor units powder coated ms enclosure compact panel mounted/floor mounted construction proper ventilation arrangement to be provided capacitor duty contactor/switch to be provided fuse/mcb protection to be provided discharge resistors to be provided for safety proper earthing arrangement provided , 3 phase auto transformer starter specifications: 3-phase variable autotransformer input: 415 v output: 0-470 v ac (continuous) current: 15 a copper wound, carbon brush type heavy duty toroidal/core construction mounted in powder coated ms/crca enclosure front panel mounted voltage control knob with scale indication proper insulated terminals provided floor/bench mounted type suitable for laboratory use input / output terminal arrangement provided mcb/fuse protection provided proper earthing terminal provided ventilation arrangement for heat dissipation , 3 floor lift interfacing model specifications: type: table-top lift model floors: 3 levels structure: transparent acrylic / ms frame cabin: moving lift car with guide rails drive: dc geared motor / stepper motor motion: up/down movement, floor indication leds (1, 2, 3) direction indicators (up/down), start & stop atevery stage, over load limit control three-floor lift operation plc interfacing and programming floor selection logic automatic stopping at floors direction indication system educational demonstration of elevator automation , mcb elcb trainer kit specifications: 1 phase/3 phase, 2/3/4 pole, 3a-16a single pole mcb 2-5amps two pole elcb 30ma lamp load single phase 5amps panel enclosure and terminal outlets , single phase resistive load specifications: type: single phase loading rheostat power rating: 5 kw supply: 230 v ac, single phase, 50 hz total number of load steps: 8 approximate dimensions: 18 × 18 × 22 inches (l × b × h) comprising electrical load resistors suitable for laboratory loading applications resistors shall be special cement-insulated type mounted on powder-coated ms panel/enclosure individual on/off rotary switches provided for load selection mounted on rubber wheels/casters for portability , signal generator specifications: frequency range: 0.1 hz to 5 mhz. display: 4 to 6 digit led display output waveforms: sine, triangle, square, ± pulse, ± ramp. amplitude: 0 - 20 vp-p. rise time: 100 ns. distortion , dso specifications: bandwidth: 50 - 100 mhz. sampling rate: 1gs/s. channels: 2 (minimum) power supply: 100v-240v ac, 50-60 hz automatic measurement: vpp, vavg,rms, frequency, period, vmax, vmin, rise time, fall time, + width, - width, +duty, - duty etc., horizontal scale: 5 ns/div - 50 s/div or equivalent vertical resolution: 8 bits (2 channels simultaneously) vertical sensitivity: 1 mv/div - 10 v/div (at input) waveform math: +, -, x , ÷, invert, fft etc., waveform storage: 16 waveforms or equivalent communication interface: usb host, usb interface. 7-inch color display or equivalent input impedance - 1 mω ±2%, // 20 providing fixing 2 × passive probes (1x/10x) , pwm based step down dc chopper using mosfet/igbt kit specifications: pwm based step-down dc chopper (buck converter) power device : power mosfet / igbt based switching circuit input supply : 24 v dc to 110 v dc or derived from 230 v ac mains through rectifier unit output voltage :(0 to vin) variable dc output current : up to 5 a dc maximum with suitable load resistor (r load) pwm duty cycle control provided pwm generation and control circuit inbuilt gate driver circuit provided , dual output regulated dc variable power supply specifications: • input voltage: 230v/50 hz ac. • output voltage: (0-30)v dc. • output current: (0-2)a dc. • protection circuit: over voltage, over current, and short-circuit protection. • high efficiency: greater than 85%. • low ripple and noise: less than 50 mv. • digital display. , 8051 micro controller kit specifications: • operating voltage: +5 v dc. • flash memory: 4 kb (at89c51) / 8 kb (at89s52). • ram: 128 bytes internal ram. • 16 × 2 alphanumeric lcd display. • push buttons / tactile switches. • dip switches for digital input. • inbuilt adc interface: ldr, potentiometer. • inbuilt dac interface. • inbuilt stepper motor driver with stepper motor. • inbuilt dc motor driver with dc motor. • 1 × 4 led array, 1 × 4 keypad, 1 × relay. • 1 × buzzer, 16 × 2 lcd display, 1 × pwm driver. • 1 × hardware interrupt key, inbuilt rtc. • inbuilt eeprom and uart module. • 4 × 7-segment display. • supports both assembly and c language programming. • pc interfaceable. , 8 bit adc/dac interface board specifications: • thermistor / lm35 input in one channel. • variable input (0-5) v in another channel. • 8 leds for digital output indication. • necessary control signals provided for adc0809. • 8-bit dac using dac0808. • 8-bit digital input from controller. • single-channel dac output:(0-10) v. • power supply:±12 v or ±15 v for analog circuitry , stepper motor drive kit specifications: working model 8051 micro controller kit capable for stepper motor drive kit , digital trainer kit specifications: 5v dc, 1a regulated power supply ±12v dc / ±15v, 200 ma regulated power supply solderless breadboard to accommodate 8 × 16-pin ics, zif (zero insertion force) ic sockets logic input and output leds for output monitoring 16 buffered led outputs 16 debounced switch inputs variable clock generator: 0.5 hz to 50 hz single pulse output: 100 ms (buffered, positive and negative outputs) one seven-segment display with 4 bcd inputs built-in logic probes built-in logic switches manual clock: debounced push button (one pulse per press)