Electronic Measurements Lab

Incharge
Er. Amit Kumar

Lab Faculty: Er Sonmati Verma

Lab Assistant: Mr Kunwar Singh

Lab Staff: Mr Ram Gopal

Lab Area: 875 Sqfeet
Room Number: EC 108

Courses Covered 

  • REC 453-Electronics Instrumentation & Measurement Lab
  • EC 454-Electronics Measurement Lab

List of Experiments

REC 453: ELECTRONIC MEASUREMENT & INSTRUMENTATION LAB

1. Measurement of phase difference & frequency using CRO (Lissajous Figure)
2. Measurement of low resistance Kelvin’s double bridge.
3. To measure unknown Inductance using Hay’s bridge.
4. To measure unknown capacitance using Wein’s frequency bridge.
5. Measurement of the unknown inductance by using Maxwell bridge method.
6. To measure unknown capacitance of small capacitors by using Schering’s bridge.
7. Study of the AC Mill voltmeter, model-5008.
8. Study of output power meter, model-5014.
9. Study of distortion factor meter and determination of the % distortion of the given
oscillator.
10. Study of the following transducer (i) PT-100 transducer (ii) K –type transducer
(iii) Pressure transducer
11. Study of L.C.R. and determination of the value of the given components.

Beyond the Syllabus:
1. Characteristics of LDR, Photo-Diode, and Phototransistor:
(i) Characteristics of LDR,
(ii) Photo-Diode,
(iii) Phototransistor:
2. Study the characteristics of Strain Gauge.
3. Study the characteristics of linear variable differential transformer (LVDT). 

List of Recent Equipments

DIGITAL STORAGE OSCILLOSCOPE 50MHZ

50MHz Digital Storage Oscilloscope It should have following features:Bandwidth 50MHz, Real-time Sampling Rate 500 MSa/s, Equivalent Sampling Rate 50GSa/s., Memory Depth: 32Kpts, Trigger types: Edge, Pulse width, Video, Slope, Alternative, Unique Digital Filter function and Waveform Recorder function, Support pass/fail function., 32 parameters Auto Measure function, Save/recall types: Setups, Waveforms, CSV file, Picture, Waveform Intensity and grid brightness can be adjusted, Nationwide Service, Standard configuration port:USB Host: Support USB flash driver save/recall function and update firmware, USB Device: Support PictBridge compatible printer and support PC remote control, RS232, Pass/Fail Output, It should have following Technical Specifications:Bandwidth :50MHz,

Realtime Sample Rate:500MSa/s (Single Channel), Equivalent Sample Rate 50GSa/s, Number of Channels :2 CH +1 Ext, Memory Depth : 32Kpts (Single Channel), Acquisition Modes:Normal/Average/Peak Detect, Average:Selectable from 4 to 256, Vertical Sensitivity : 2mV/div - 10V/div, Vertical Resolution :8 bits, Input Impedance:1 MW ±2% II 17 pF ±3 pF,

Input Coupling :       DC, AC and GND, Maximum Input Voltage            : ±400Vpp,

Trigger Sources:       CH1, CH2, Ext, Ext /5, AC Line, Trigger Modes Auto, Normal, Single,

Trigger Type :Edge, Pulse Width, Slope, Video, Alternate, Auto Measure:FOV Shoot, RPRE Shoot, FPRE Shoot, Rise time, Fall time, Freq, Period, Vpp, Vmax, Vmin, Vamp, Vtop, Vbase, Vavg, Mean, Crms, Vrms, ROVShoot, + Wid, -Wid, +Dut, -Dut, BWid, Phase, FRR, FRF, FFR, FFF, LRR, LRF, LFR, LFF Cursor Measure             :Manual, Track and Auto measure,                                                                           mode Maths :+, – , ×, /, FFT, Waveform Interpolation :Sin x/x, Linear, Storage       :Internal:2 reference waveforms,  20 waveforms and 20 Setups USB : BMP, CSV, Waveforms, Setups,

Communication Port :USB Host, USB Device, RS232, Pass/Fail, Sample Types      :Real Time and Equivalent Time, FFT:Window: Hanning, Hamming, Blackman, Rectangular, Measure Display Modes :Main, Window, Window Zoom, Scan, X-Y, Menu Display :2 sec, 5 sec, 10 sec, 20 sec, Infinite, Display :7 inch TFT Color LCD Display, Power :100 - 240V AC, 50VA Max,

Accessories :1:1/10:1 Probe (2 pcs), Power Cord, USB Cable, Easy , Scope Software,  Warranty at least 3 – years

MEASUREMENT OF RESISTANCE BY WHEATSTONE BRIDGE AND MEASUREMENT OF BRIDGE SENSITIVITY

Study of Wheatstone Bridge.   This test set has been designed to provide an accurate and sensitive instrument for measurement of Resistance. This set is entirely contained with a dry battery and a Galvanometer.   A.C. supply of frequency 1KHz with variable amplitude and Galvanometer are provided. Interconnection leads for connections & comprehensive. User’s Manual will explain required results.

MEASUREMENT OF DESAUTY'S AND SCHEARING BRIDGE TRAINER

The trainer should have following features: Complete set up with all necessaries accessories: Inbuilt Function Generator, Microcontroller based Frequency Counter, Null detector with audio amplifier and speaker.The trainer should have following Technical Specifications :Sine Wave Generator :Frequency range : Selectable:   500 Hz to 1 KHz, 1 KHz to 10 KHz, 10 KHz to 60 KHz. Amplitude control output : Sine wave : Up to 8 Vpp, Speaker: 8 Ohm, Display : LCD, fuse 500 mA, slow blow,  Mains: 230 V AC ±10%, 50 Hz, Unknown Capacitors: 0.1 μF, 0.22 μF, 0.47Μf.It should performed following experiments: Determination of unknown capacitance using Desauty Bridge method, Determination of unknown capacitance using Schering Bridge method.

MAXWELL'S INDUCTANCE BRIDGE AND MAXWELL'S INDUCTANCE-CAPACITANCE BRIDGE ON A SINGLE

It should have following features: Illustration of both Maxwell's inductance bridge and Maxwell's inductance-capacitance bridge on a single, board Inbuilt 1 KHz sine wave generator with variable amplitude, Null detector with audio amplifier and speaker, It should have following technical specifications:  Mains supply:  230 V ±10%, 50 Hz,  DC Power supply: +12V, -12V,  Sine wave generator Frequency:1 KHz, Amplitude : 20 Vpp Max, Speaker: 8 ohm, Unknown Inductors: 12H, 1.2H, 4.7 mH, 10 mH 20mH, 30 mH, Unknown Internal Resistance : 470Ω, 10Ω , 20Ω , 30Ω

KELVIN'S DOUBLE BRIDGE

Features: On board test points to observe signals On board schematic diagram Flexibility of making circuit connections Light weight & compact. AD-01 DC Power Supply (±12V, ± 5V),

PRESSURE TRANSDUCER EXPLORER

The instrument should have following features : Differential input Pressure Transducer, Precise Signal conditioning, Self-contained and easy to operate, Data acquisition using USB, Sensitive, Linear, Stable & Accurate, Functional blocks indicated on board mimic, On board Digital Voltmeter, On board Indicators: Buzzer & LED, On board On/Off Controller, Graphical representation, User friendly software, On Board Touch Switch, The instrument should have following Technical Specifications :Pressure Transducer :0 to 100 psi, Differential input, Pressure Gauge:0 to 100 psi, Pressure Vessel : 0 to 100 psi, Safety Valve : 0 to 100 psi, Hoses:1.5 m, Foot Pump: 0 to 150 psi, V-I Specification :      0 to 5 VDC input, 4 to 20 mA output, Buzzer Indicator:5 V DC, LED Indicator  5 V DC, Digital Voltmeter : 0 to 10 V, Power Supply:    100V - 240V AC, 50/60Hz, Test Points:18 nos, Learning Material: Online, Operating Conditions: 0-40˚ C, 85% RH,

Included Accessories: PU -Tube - 1 meter, Foot Pump-1no, USB cable-1no.,  Pressure Vessel-1no, Mains cord -1 no.   Power Supply-1no., Patch cord 16”(2mm) - 10 nos.,

INSTRUMENTATION AMPLIFIER : DESIGN FOR SPECIFIC GAIN AND VERIFICATION OF CMRR

Study of Instrumentation Amplifier using Op-amp IC-741. Inbuilt Power Supply. 2mm Socket & test points provided on board to observe the waveform & signals. Enclosed in an attractive ABS plastic cabinet with cover for safety of components. Set of Patch Chords & Experimental Manual.

REALIZATION OF PCM SIGNAL USING ADC AND RECONSTRUCTION USING DAC USING 4-BIT / 8-BIT SYSTEMS. OBSERVE THE QUANTIZATION NOISE IN EACH CASE.

In the basic PCM Modulator the base band analog Signal is converted into 8 bit Digital format using an ADC.  The Sampling rate is set at 2.5 KHz. The 8 bit parallel data from ADC is converted into serial bit stream at 20 kbps. The PCM Demodulator receives the serial data, converts it into 8 bit parallel format. The Analog to Digital converter transforms the 8 bit parallel data into analog level. Thus the output of DAC is a stepped approximation of input signal. A low pass filter is used to recover the analog signal. HARDWARE SPECIFICATION :Inbuilt Power Supply.  Built in TTL Clock Generator 20 KHz. Modulating signal Generator 100Hz to 5KHz. PCM Encoder & PCM Decoder. Data display with LED’s. Assembled in plastic Box with circuit printed on PCB with 2mm socket for test points & to see the waveforms. Set of 2mm Patch Chords & Manual.

STUDY OF LOW NOISE AND LOW FREQUENCY AMPLIFIER FOR BIOMEDICAL APPLICATION

Study of Low Noise and Low Frequency Amplifier Trainer. Circuit Diagram Printed on Board.  Enclosed in an ABS plastic cabinet with cover. Inbuilt Power Supply. Set of Patch Chords. User’s Manual.