Experimental Training Equipments-> Advanced Communication Trainer

[1] 2 [ Next»]   Click to Enlarge ANALOGUE/ DIGITAL IC MODULAR TRAINER This trainer is a single glass epoxy printed circuit board with legends neatly screen printed in multi colour on the front side and all the components are soldered on the back side of the PCB to avoid tampering of fixed components like resistors, capacitors, transistors, diodes. Variable components like potentiometers are mounted on the front side of the PCB for making linear measurements. TECHNICAL SPECIFICATIONS: D.C. POWER SUPPLY: FIXED VOLTAGES: +5V/1A +15V/250mA -15v/250mA VARIABLE VOLTAGES: +(1.2V-15)V/250mA -(1.2V-15)V/250mA +(1.2V-30)V/250mA -(1.2V-30)V/250ma A.C VOLTAGE: (30-0-30)V/50Hz VAC. AMPLITUDE: (0-10V) Peak to Peak. FREQUENCY SELECTOR: Frequency can be selected by using frequency selector. x1 2Hz - 20Hz x10 20Hz - 200Hz x100 200Hz - 2KHz x1K 2KHz - 20KHz x10K 20KHz - 200KHz TTL OUTPUT: TTL level (3.6) V FUNCTION GENERATOR: FUNCTION OUTPUT: Sine, Square, Triangle, Ramp and Pulse. FREQUENCY CONTROL: Frequency can be linearly varied from 2Hz to 200KHz in five decade ranges using frequency control. DIGITAL MULTIMETER: Analogue/Digital I.C trainer is provided with 3.5" digit DMM for measuring Various voltage DEVICES: TRANSISTORS: NPN-3, PNP-1 ZENER DIODE: 5.1V; 9.1V DIODES: SILICON GERMANIUM IN4001, BY127 OA79 PHOTO DEVICES: Photodiode, Photo transistor, LDR. 2W RESISTORS: 100W, 470W,1K, 2K2, 4K7, 10K, 47K, 82K, 100K, 1M. BREAD BOARD: Bread board is provided in this trainer. CAPACITORS:100pf, 0.01mfd, 0.1mfd, 1mfd, 100mfd, 0.001mfd, 0.033mfd, 0.47mfd, 10mfd, 1000mfd. POTENTIOMETERS: 10K, 220k, 1M INPUTS: LOGIC Switches - 4Nos OUTPUTS: LED Indicators - 4Nos EXPERIMENTAL MODULES: 24 Nos. of experimental modules will be provided along with this unit. HOUSING: Analogue/Digital I.C trainer is elegantly fabricated and housed in a brief case for portability. DIMENSION: 48cms x 13cms x 14cms WEIGHT: (Approx. )1Kg POWER: 230V/ 50Hz A.C Mains operated. LIST OF EXPERIMENTS AND MODULES FOR ANALOGUE & DIGITAL MODULAR TRAINER Transistor amplifier circuits Half-wave, full wave & bridge, rectifiers & filters circuits Hartley oscillator RC phase shift oscillator Multivibrators using transistors Operational amplifiers; characteristics & testing method Summer, subtractor, differentiator & integrators using op-amps Voltage-to-frequency converter Frequency -to-voltage converter Quadrate (sine & cosine oscillator & phase shifting circuit) Log and antilog amplifier Active low pass filter Active high pass filter Active band pass filter Clipping circuits - testing methods using op- amps Clamping circuits - testing methods using op- amps Basic logic gates (using diodes and transistors) Nand, Nor, Inverter gates (IC-band), verification of Demorgan's theorems & verification of Boolean expressions Exclusive or & Exclusive Nor gates, half adder & full adder, half-subtractor & full subtractor '555' timer circuits and applications Quadruple J-K flip-flop, with preset & 'clear' using 7476 (study of shift registers and asynchronous counter) BCD-to-7 segment decoder (suitable for common - anode display) & BCD-to-7 segment decoder (suitable common cathode display) 4-bit binary universal shift register 4-bit binary up-down counter, using 74192 (synchronous counter) Random-access-memory (RAM) (16 words of 4 bits) See Enlarge Click to Enlarge ELECTRICAL & ELECTRONICS SYSTEM TRAINER INTRODUCTION: Max "Electrical & Electronics System Trainer " is a versatile and self-contained instrument. It is very useful in electronics laboratory. EEST is a single printed circuit board with legends neatly screen printed on the front side and all the components are soldered on the back side of the PCB to avoid tampering of fixed components like resistors, capacitors, transistors, diodes, and variable components like potentiometers are mounted on the front side of the PCB for making linear measurement. TECHNICAL SPECIFICATIONS: D.C. POWER SUPPLY: FIXED VOLTAGES: +5V,-5V@500mA +9V,-9V@500mA +12V,-12V@500mA +15V, -15V 500mA VARIABLE VOLTAGES: +(0-15)V, -(0-15)@500mA +(0-40)V, -(0-40)V@500mA +(0-175)V AC VOLTAGES: (6-0-6)V/50Hz (12-0-12)V/50Hz (15-0-15)V/50Hz (30-0-30)V/50Hz (0-125)V/50Hz SIGNAL GENERATOR: OUTPUT WAVEFORMS: Sine, Square and Triangle. AMPLITUDE CONTROL: (0 -10)V peak to peak. FREQUENCY CONTROL: Frequency can be linearly varied from 2Hz to 200KHz using Frequency control in 5 decade ranges. FREQUENCY SELECTOR: Frequency can be selected by using Frequency selector. x1 2Hz - 20Hz x10 20Hz - 200Hz x100 200Hz - 2KHz x1K 2KHz - 20KHz x10K 20KHz - 200KHz TTL CLOCK GENERATOR: TTL level (3.6)V square. Frequency can be linearly varied using Frequency control from 1Hz to 100KHz in five decade ranges. FREQUENCY SELECTOR: Frequency can be selected by using Frequency selector. x1 1Hz - 10Hz x10 10Hz - 100Hz x100 100Hz - 1KHz x1K 1KHz - 10KHz x10K 10KHz - 100KHz INPUTS: 8 logic switches are provided for giving inputs, PULSER: Pulser is provided with two de-bounced output (Q, Q) OUTPUTS: LED indicator : 8 Nos. 7 SEGMENT DISPLAY DECODER/DRIVER: 7 segment display decoder/driver is provided as BCD to Decimal Decoder. LOGIC PROBE: Logic probe is provided for monitoring the logic status. BREAD BOARD: Electrical & Electronics system Trainer is provided with Breadboard for conducting various experiments. DIGITAL MULTIMETER: Electrical & Electronics system Trainer is provided with 3" digit DMM for measuring various voltages, current and resistance. ANALOGUE METERS: AC Current: (0-100)mA AC Voltage: (0-15)V DC Current : (0-100)mA DC Voltage : (0-15)V CAUTION: Please switch off the DMM after its use, because it is operated on 9V battery. If it is not switched off, while not in use, the battery gets discharged. MAINS: 230V mains operated. See Enlarge Click to Enlarge AM/FM SIGNAL GENERATOR Objective: Study of AM/FM signal generator using XR2206. FEATURES: Built in AF oscillator (1KHz) Carrier Frequency: Variable. Carrier Amplitude: Variable (0-5)V Power supply: +15V/500mA See Enlarge Click to Enlarge DEMODULATOR CIRCUITS Objective: Study of Diode demodulator circuit. Study of Transistorised Demodulation. Power supply: +12V/500mA See Enlarge Click to Enlarge DELTA MODULATION & DEMODULATION The objective of this MAX Trainer is to introduce several basic concepts related to Delta Modulation (D.M). 2. To study the hardware implementation of Delta Modulation. 3. A hardware circuit for DM is built so that the DM waveforms can be observed on an oscilloscope. 4. Delta Modulation is a process of modulation where a train of fixed-width pulses is transmitted, whose polarity indicates whether the demodulator output should rise or fall at each pulse. The output is caused to rise or fall by a fixed step height at each pulse. This trainer consists of the following features. FEATURES: DELTA MODULATION: The modulation circuit consists of IC's LM741 and CD4013. IC-LM741 functions as a comparative circuit and IC-CD4013 is an D-Flip-flop, functions to hold the quantized error signal during sampling signal. DEMODULATION: The Demodulation circuit consists of IC's CD4016. The IC CD4016 is an quad bilateral switch. The bilateral switch functions as to reconstruct the original signal. Here, same clock pulses is apply to the CD4013 and CD4016 IC's. Clock Generator : Output Square Frequency 100KHZ Amplitude 10V Audio Oscillator: Output Sine Frequency 200Hz-2KHz Amplitude 0-10V Power Supply : +5V, -5V/500mA Dimension : 41.5cms x 31.5cms x 13.5cms. Weight: 750gms (app.) Power: 230V Ac,50Hz mains operated. See Enlarge Click to Enlarge ADAPTIVE DELTA MODULATION/DEMODULATION Objective: The objective of this lab Trainer is to introduce several basic concepts related to Adaptive Delta Modulation/Demodulation. To study how variable step size that adapts itself to the short-term characteristics of the source signal. That is the step size is increased when the waveform has a step slope and decreased when the waveform has relatively small slope. This strategy is called adaptive DM (ADM). This trainer consists of the following features. Clock Generator: Output Square Frequency 100KHZ Amplitude 10V Audio Oscillator: Output Sine Frequency 200Hz-2KHz Amplitude 0-10V Power Supply: +5V, -5V/500mA Dimension: 41.5cms x 31.5cms x 13.5cms. Weight: 750gms (app.) See Enlarge Click to Enlarge AM/FM RECEIVER TRAINER Objective: Study of AM Receiver (MW) Study of FM Receiver POWER SUPPLY: +6V/500mA FEATURES: Built in 7W Power Amplifier Loud speaker See Enlarge Click to Enlarge PHASE SHIFT KEYING MODULATOR/DEMODULATOR OBJECTIVE: The purpose of this MAX trainer is to provide the basic knowledge of the Phase Shift Keying (PSK). PSK describes the modulation technique that alters the phase of the carrier. Mathematically: In this trainer we have used 1496 IC as PSK Modulator. PSK Demodulator consists of 565 Phase locked loop IC and an operational amplifier to demodulate the PSK signal by adjusting the PLL to the centre of the PSK signal. To prove this fact by comparing the steady State input and output levels (i.e) the PLL output followed the Input level exactly. Our PSK trainer consists of the following Features: Data Input, Carrier generator, Phase shift keying Modulator & PSK Demodulator. 1. Date Input: Debouncing pulser is provided to give the Input instantaneously. 2. Clock Generator: It is provided for Data Input of the PSK Modulator. The generated square wave frequency varies from 1Hz to 500Hz. 3. Carrier Generator: This generator is provided for carrier Input of the PSK Modulator. It generates sine wave. Its frequency varies from 1KHz to 100KHz. Frequency selector: X1 - 1KHz to 10KHz (approximately) X10 - 5KHz to 100KHz Amplitude: (0-10)V (p-p) See Enlarge Click to Enlarge QPSK MODULATOR FEATURES *Programmable gain *PLL controlled carrier frequency *3-wire transmission bus *5V supply voltage. APPLICATIONS *QPSK modulation GENERAL DESCRIPTION The Quadrature Phase Shift Keying (QPSK) transmitter IC is a monollthic bipolar IC dedicated to quadrature modulation of the I and Q signals. It includes: *Two double balanced mixers *A balanced voltage controlled oscillator (VCO) with 0 to 90 degrees signal generation for modulation *A phase locked loop (PLL) for IF frequency control *A conversion mixer *A PLL for RF frequency control *A gain controlled output amplifier *A 3-wire bus and an output buffer. Two PLLs are incorporated the first PLL includes: A fixed main divider A crystal oscillator and its programmable reference divider A phase/frequency detector, combined with a fixed charge pump. The second PLL includes A divide-by-four preamplifier A 12-bit programmable divider A crystal oscillator and its programmable reference divider A phase/frequency detector, combined with a programmable charge pump which drives the tuning amplifier, including 30 V output. Power: 230V/Ac Mains operated. Housing: Mounted in sloping Fiber cabinet. Dimension: 41.5cms X 31.5cms X 13.5cms Weight: 750 gms See Enlarge Click to Enlarge FREQUENCY DIVISION MULTIPLEXING & DEMULTIPLEXING Study of Frequency Division Multiplexing. Study of frequency demultiplexer. POWERSUPPLY: +15V/500mA CLOCK GENERATOR: Built in clock generator. See Enlarge Click to Enlarge BINARY PHASE SHIFT KEYING MODULATOR (BPSK) Binary phase- shift- keying (BPSK) has only two phases, 0 and p . It is therefore a type of ASK with f(t) taking the values 1 or 1 and its bandwidth is the same as that of ASK. Phase-shift-keying offers a simple way of increasing the number of levels in the transmission without increasing the bandwidth by introducing smaller phase shifts. This trainer consists of the following features. Clock Generator: *Output Wave form Square *Frequency 100KHZ *Amplitude 10V(P-P) Audio Oscillator: *Output Wave form Sine *Frequency 200Hz-2KHz *Amplitude 0-10V(P-P) Power Supply: +5V/500mA, -5V/500mA Dimension: 41.5cms x 31.5cms x 13.5cms. Weight: 750gms (app.) See Enlarge Click to Enlarge AMPLITUDE SHIFT KEYING OBJECTIVES: Amplitude shift keying modulator describes the technique the carrier wave is multiplied by the digital signal f(t). Mathematically, the modulated carrier signal s(t) is: s(t) = f(t) sin(2p fct + ? ) It is a special case of amplitude modulation (AM). Amplitude modulation has the property of translating the spectrum of the modulation f(t) to the carrier frequency. The bandwidth of the signal remains unchanged. The fact that AM simply shifts the signal spectrum is often used to convert the carrier frequency to a more suitable value without altering the modulation. This process is known variously as mixing, up-conversion or down-conversion. Some form of conversion will always be presents when the channel carrier occupies a frequency range outside the modulation frequency range. This trainer consists of the following features. Clock Generator: *Output Wave form Square *Frequency 100KHZ *Amplitude 10V (P-P) Audio Oscillator: *Output Wave form Sine *Frequency 200Hz-2KHz *Amplitude 0-10V (P-P) Power Supply: +5V/500mA, -5V/500mA Dimension: 41.5cmsx31.5cmsx13.5cms Weight: 750gms (app.) See Enlarge Click to Enlarge DSB/SSB AM TRANSMITTER Study of Double Side Band AM Transmitter. Study of Single Side Band AM Transmitter. FEATURES : generator: 100KHz AF oscillator: 200Hz 20KHz Power supply: +12V/500mA Mains: 230V AC See Enlarge Click to Enlarge AMT AM TRANSMITTER OBJECTIVIES: To build and run your own AM broadcast station with this exciting kit! The AM Transmitter is designed specifically for simplicity of construction and use an ideal first kit! FEATURES: Great for transmitting your tape deck, CD player, or voice throughout the house, yard, or car ! Powerful enough for high school, college, or neighborhood radio station - in use the world over Easily tunes to any clear channel on the AM broadcast band. from 530 to 1750 KHz. Operates on the same principle as the "big-boys", learn how commercial transmitters work as well ! Superior performance. Adjustable input level - can be configured for line level or microphone input. Unit runs on 12 volts DC(Built in regulated power supply) complete and informative instructions guide you to the trainer that works the first time ACCESSORIES: Dynamic microphone AM Radio Receiver Set of hook up wires Instruction manual Dimension: 36.5cm X28cm X9.5cm Weight: 750gms See Enlarge Click to Enlarge AM RECEIVER OBJECTIVE: Study of AM receiver circuit. GENERAL DESCRIPTION: The TEA 5591A is a 24-pin integrated radio circuit, derived from the TEA 5591 and is designed for use in a AM/FM portable radios and clock radios. The TEA 5591A differs from the TEA 5591 that is has: Separate IF input pins for Am and FM. A split-up AM-if stage (for distribute selectivity). An LED driver indicator. The main advantage of the TEA5591A is its ability to operate over a wide range of supply voltages (1.8 to 15V) without any loss performance. The AM Circuit incorporates: A double balance mixer. A 'one pin' oscillator with amplitude control operating in the 0.9 to 30 MHz frequency range. A split-up IF amplifier. A detector. An AGC circuit which controls the IF amplifier and mixer. FEATURES: LED AM/FM indicator. A DC AM/FM switch facility. Three separate stabilizers to enable operation over a wide range of supply (1.8-5 V) All pins (except pin 10) are ESD protected. This trainer is single glass-epoxy printed circuit board. This trainer is mounted on a strong fibre cabinet. POWER SUPPLY: +6 Volts. DIMENSION: 36.5cms x 28cms x 9.5cms. WEIGHT: 750gms. See Enlarge [1] 2 [ Next»] Go to Top