Logic Gates & Training Boards 

ANALOG TO DIGITAL (A/D) CONVERTOR (ELP.112.140)

Objective : To study Analog to Digital & Digital to Analog convertors using R-2R network & Successive Approximation Method.

Features : Instrument comprises of DC Regulated Power Supply 5VDC/150mA, 0-10 VDC/150mA, ± 15VDC/150mA, 1 Voltmeter, 4 SPDT switches provided for selecting logic ‘1’ & logic ‘0’, one output indicators, Circuit diagram printed on the front panel.

 

BH CURVE APPARATUS (ELP.112.141)

Objective : To trace Hystersis curves on CRO using Resistance, Capacitance & Inductance.

Features : Instrument comprises of AC Power Supply 10-30 VAC, Output selectable using band switch, Circuit diagram for BH Curve Printed, Components connected behind the front panel, provision for connecting external Inductance, Input & Outputs Connections brought out at Sockets.

 CLIPPING & CLAMPING CIRCUIT APPARATUS (ELP.112.142)

Objective : To study effect of Positive & Negative Clipping & Clamping on Sine Wave.

Features : Instrument comprises of DC Regulated Power Supply 0-3 VDC/150mA, Two fix Output DC Power Supplies connected in series of Diodes for Positive & Negative clipping, Circuit diagram for Clipping & Clamping Circuit Printed, components placed inside & connections brought out at 4mm Sockets.

 COLPITT OSCILLATOR (ELP.112.143)

Objective : To study the Frequency and Waveshape generated by a Colpitt Oscillator.

Features : Instrument comprises of 12 V DC Regulated Power Supply, Circuit diagram Printed & components mounted on front panel.

 

COMMON EMITTER TRANSISTOR AMPLIFIER (ELP.112.144)

Objective : To study Frequency Response, Input Impedance, Output Impedance & –ve feed back of common base Transistor Amplifier.

Features : Instrument comprises of DC Regulated Power Supply, Circuit diagram is printed, components mounted on the front panel.

 CONVERTION OF GALVANOMETER INTO A CURRENTMETER (ELP.112.145) Features : Instrument comprises of DC Regulated Power Supply 0-5VDC/150mA, two round meters (One milliammeter & One Galvanometer), Three set of Shunts mounted behind the panel, connections of supplies, Meters & Shunts brought out at 4mm Sockets.

 

CONVERTION OF GALVANOMETER INTO A VOLTMETER (ELP.112.146) Features : Instrument comprises of DC Regulated Power Supply 0-5VDC/150mA, two round meters (One Voltmeter & One Galvanometer), Three set of resistances mounted behind the panel, connections of supplies, Meters & Resistances brought out at 4mm Sockets.

 DIAC CHARACTERISTICS APPARATUS WITH TWO METERS & REGULATED POWER SUPPLY (ELP.112.147)

Objective : To study VI Characteristics of Diac.

Features : Instrument comprises of DC Regulated Power Supply 0-50 VDC/150mA, two round meters for voltage & current measurement, one Diac mounted behind the panel, connections of Supplies & Diac brought out at 4mm Sockets.

 

FET CHARACTERISTICS APPARATUS WITH REGULATED POWER SUPPLIES (ELP.112.148)

Objective : To plot static & Transfer Characteristics.

Features : Instrument comprises of Two DC Regulated Power Supplies 0-15VDC/ 150mA & 0-5VDC/150mA, three round meters for voltage & current measurement, FET BFW10 mounted behind the panel, connections of Supplies, Meters & FET brought out at 4mm Sockets.

 

HALF WAVE/FULL WAVE & BRIDGE RECTIFIER APPARATUS WITH 2 METERS (ELP.112.149)

Objective : To study Efficiency & Ripple factor in case of Half wave, Full wave & Bridge rectifier on application of load & filters.

Features : Instrument comprises of AC Power Supply, 2 meters to measure Output Voltage & Output current, 4 PN Junction Diodes, Filter Circuit Kit, load Resistances selectable using bandswitch.

 

HARTLEY OSCILLATORS (ELP.112.150)

Objective : To study the Frequency and Waveshape generated by a Hartley Oscillator.

Features : Instrument comprises of 30V DC Regulated Power Supply, circuit diagram Printed & components mounted on front panel.

 Plank’s Constant Apparatus IONIZATION POTENTIAL OF MERCURY USING THYRATRON VALVE (ELP.112.151)

Objective : To plot Forward & Reverse Characteristics of a Vacuum Photo cell & to Calculate its stopping Potential.

Features : Dual range Power Supply 0-1VDC/ 0-50 VDC with one dual range voltmeter & one sensitive centre zero Galvanmeter of 25 mA movement, Photo cell mounted in wooden box having window for injecting light & also for sliding the various filters. One wooden plank with 1/2 meter scale, light source with 100 W lamp & set of filters.

 

LCR RESONANCE APPARATUS (ELP.112.152)

Objective : To plot Frequency Vs. Current Characteristics of LCR circuit when connected in series or in parallel.

Features : Instrument comprises of 3 Resistances, 3 Capacitors & 1 Inductance connected inside & connections brought out at Sockets. 2 AC moving coil meters to measure voltage & current.

 LDR CHARACTERISTICS APPARATUS (ELP.112.153)

Objective : To plot a graph, current Vs intensity of Light at different value of voltages.

Features : Instrument comprises of DC Regulated Power Supply 0-3 VDC/150mA, two round meters for voltage & current measurement, LDR mounted on the panel, connections of Supplies & LDR brought out at 4mm Sockets. Lamp Holder with 60 W Bulb are given with this apparatus.

 

Basic Logic gates using discrete components (ELP.112.154)

Objective : To verify the truth table for AND gate, OR gate, NOT gate, NAND gate & NOR gate

Features : Circuit diagram has been printed for 'OR', 'AND' & 'NOT' gates and components mounted on copper sheet front panel and soldered in the back side to demonstrate the working of DTL gates. NAND & NOR gates can be assembled with the combination of OR, AND & NOT gates. Also provided 2 sockets for logic '1' and 2 sockets for logic '0', one red LED for output indicator, 5V DC regulated power supply for logic '1' and logic '0' and 4 patch cords for interconnections. In logic '1' and logic '0', 2 Red LED output indicators, circuit diagram printed for 'OR', 'AND', EX-OR & 'NOT' gates. NOR gate, NAND gate & Demorgan's Theorems can be connected with the combination of OR, AND & NOT gates.

Input indicators, Circuit diagram for IC 7490 engraved & connections for various inputs & outputs brought on the sockets, patch cords and instruction manual.

 

Logic Gate Computer (II) [Bread Board Model] (ELP.112.155)

Objective : Study and verify Truth tables of Logic gates. Verification of Boolean idlentities and Demorgan's theorems. Study and verify truth tables of Digital adders and subtractors Study of flip flops and verification of their truth tables. Study of counters, shift registers and verification of their truth tables. Study of Encoders, Decoders and verification of their truth tables Study of Multiplexers, demultiplexers and verification of their truth tables

Features : To regulated power supplies of 5VDC and +/- 15 VDC 10 Logic inputs with LED indicators selectable using SPDT switches 1Hz monoshot clock pulse with pulser switch, pulse Generator consists of 1 Hz. 1 KHz and 1 MHz clock pulses Breadboard is mounted on front panel to perform various experiments 10 number logic output indicators and 3 seven segment display mounted on front panel. Complete with set of IC's & connecting leads to perform various experiments.

 MEASUREMENT OF PEAK, AVERAGE & RMS VALUE OF A AC SIGNAL (ELP.112.156) Features : Instrument comprises of Sine Wave Output on sockets, Step Down Transformer, Circuit Diagram for Peak & Average Value measurement Printed and connections of important points brought out at Sockets/Terminals.

 MOSFET CHARACTERISTICS APPARATUS WITH REGULATED POWER SUPPLIES & ROUND METERS (ELP.112.157)

Objective : To plot V

Features : Instrument comprises of Two DC Regulated Power Supplies 0-15 VDC/ 150mA & 0 -25VDC/150 mA, three round meters for voltage & current measurement, one Mosfet no. TRF 840 mounted behind the panel, connections of Supplies, Meters & Mosfet brought out at 4mm Sockets.

DS versus ID for different values of VGS.

 

Ohms Law apparatus (ELP.112.158)

To verify Ohm's law i.e. V = IR

Instrument consists of Two moving coil meters to measure voltage & current, One wire wound Potentiometer, Circuit diagram Printed Connections brought on terminals for connecting 6 Volts battery & One wire wound Resistance and power supply

 

PHASE SHIFT OSCILLATOR (ELP.112.159)

Objective : To study the Frequency and Waveshape generated by Phase Shift Oscillator.

Features : Instrument comprises of 12V DC Regulated Power Supply, Circuit diagram Printed & components mounted on front panel.

 

RC COUPLED TRANSISTOR AMPLIFIER (ELP.112.160)

Objective : To study Frequecy Response of Common Base Transistor Amplifier.

Features : Instrument comprises of DC Regulated Power Supply, Circuit diagram is printed, components mounted on the front panel.

 

RESISTANCES IN SERIES & PARALLEL APPARATUS (ELP.112.161)

Objective : To verify properties of Resistances when connected in series & parallel.

Features : Instrument comprises of Two moving coil meters to measure voltage & current, Circuit diagram for series & parallel connections Printed & Resistances mounted on the front panel.

 

SCR CHARACTERISTICS APPARATUS WITH REGULATED POWER SUPPLY (ELP.112.162)

Objective : To plot Anode current Vs Anode Cathode Voltage Characteristics. Gate Characteristics (Open Gate), Gate Characteristics (Gate connected).

Features : Instrument comprises of two DC Regulated Power Supplies 0-30VDC/ 150mA & 0-1VDC/150mA, three round meters for voltage & current measurement, SCR 2P4M mounted behind the panel, connections of Supplies,Meters & SCR brought out at 4mm Sockets.

 

SEMICONDUCTOR DIODE/PN JUNCTION DIODE CHARACTERISTICS APPARATUS WITH REGULATED POWER SUPPLIES (ELP.112.163)

Objective : To study Forward & Reverse Characteristics of PN Junction Diode.

Features : Instrument comprises of two DC Regulated Power Supplies 0-3VDC/ 150mA & 0-30 VDC/150mA, two round meters for voltage & current measurement, PN Junction Diodes mounted behind the panel, connections of Supplies, Meters & Diodes brought out at 4 mm Sockets.

 

SOLAR CELL CHARACTERISTICS APPARATUS (ELP.112.164)

Objective : To draw V & I characteristics of solar cell.

Features : Instrument comprises of moving coil meters fitted on panel with power supply, Lamp house with power supply, solar cell mounted, optical bench double rod & connection leads.

 

STANDARD CELL SUBSTITUTE (ELP.112.165) Electronic Standard Cell output voltage 1.018 VDC

 STUDY OF 4 BIT ADDER AND SUBTRACTOR (ELP.112.166)

Objective : To study the 4 Bit Adder and Subtractor using IC 7483

Features : Instrument comprises of DC Regulated Power Supply 5V/150mA, 4 Logic inputs selectable using SPDT switches, 4 output LED indicators, circuit diagram printed & connections brought out at sockets on the front panel.

 

STUDY OF 4-1LINE (FOUR INPUT & ONE OUTPUT) (ELP.112.167)

Study of 4-1line (four input & one output) Multiplexer using AND, OR & NOT gates.

Objectives : To study 4-1 line multiplexer circuit using AND, OR & NOT gates.

Features : Instrument comprises of DC Regulated Power Supply 5VDC/150mA, 6 logic inputs selectable using toggle switches, one output indicators, Circuit diagram printed on the front panel.

 

STUDY OF APPLICATIONS OF OPERATIONAL AMPLIFIER (ELP.112.168)

Objective : To study the basic characteristics of Op - Amp as Input Offset Current, Offset Voltage, Slew Rate, Band width and Null Balancing.

Features : Instrument comprises of ± 15VDC Regulated Power Supply, 2 round meters, Different type of Resistances and Capacitors, IC 741 connected inside.

 STUDY OF ARITHMATIC LOGIC UNIT (ALU) (ELP.112.169) Features : Instruments Comprises of fixed Output DC Regulated power supply of 5V, 12V. Logic inputs selectable using SPDT switches & logic output indicators & IC 74181. Circuit diagram is printed on the front panel.

 Tetrode/Pentode Valve Characteristics Apparatus with DC Regulated Power Supplies (ELP.112.170)

Objective : Plate & Screen Characteristics of Tetrode & Pentode valve at various Grid voltages

Features : Instrument comprises of Two DC Regulated Power Supplies 0-300VDC/ 30mA & One 0-25 VDC/10mA, AC Power Supply 6.3 VAC/1Amp, five round meters for voltage & Current measurement, valve diagram is Printed on Front panel, connections of Supplies & Valve brought out at 4mm Socket.

 

THERMISTOR CHARACTERISTICS APPARATUS (ELP.112.171)

Objective : To plot negative Resistance co -efficient characteristics of a Glass Thermistor.

Features : Instrument comprises of DC Regulated Power Supply 0-10 VDC/150mA, two round meters for voltage & current measurement, one Glass Thermistor is kept in Oven. Connections of Supplies, Meters & Thermistor brought out at 4 mm Sockets, Also provided with Oven with temperature control knob.

 

Transistor Characteristics Apparatus with Regulated Power Supply (ELP.112.172)

Objective : Input & Output Characteristics of Common Base PNP & NPN Transistors Input & Output Characteristics of Common Emitter PNP & NPN Transistor.

Features : Instrument comprises of Two DC Regulated Power Supplies 0-10VDC/ 150mA & 0-1VDC/150mA, four round meters for voltage & current measurement, one PNP & one NPN Transistor mounted behind the panel, connections of Supplies & Transistors brought out at 4mm Sockets.

 

Triac Characteristics Apparatus with Regulated Power Supply (ELP.112.173)

Objective : To study the MT Characteristics with Gate Signal in all the 4 Quadrants.

Features : Instrument comprises of two DC Regulated Power Supplies 0-15VDC/ 150mA & 0-5 VDC/150mA, three round meters for voltage & current measurement, Triac mounted behind the panel, connections of Supplies & Triac brought out at 4mm Sockets.

 

Triode Valve Characteristics Apparatus with DC Regulated Power Supply (ELP.112.174)

Objective : VI Characteristics of Triode Valve at various Grid voltages.

Features : Instrument comprises of DC Regulated Power Supply 0-300VDC/ 30mA & 0-25VDC/10mA, AC Power Supply 6.3 VAC/1Amp, three round meters for voltage & current measurement, valve diagram is Printed on Front Panel, connections of Supplies & Valve brought out at 4 mm Sockets.

 

UJT Characteristics Apparatus with Regulated Power Supply (ELP.112.175)

Objective : To plot V-I Characteristics & to measure interbase resistance.

Features : Instrument comprises of Two DC Regulated Power supplies 0-15VDC/ 150mA & 0-25VDC/150mA, three round meters for voltage & current measurement, one UJT 2N2646 mounted behind the panel, connections of Supplies, Meters & UJT brought out at 4mm Sockets.

 

VACUUM TUBE VOLT-OHMETER (VTVM) (ELP.112.176)

Measurement of AC & DC voltages from 1.5 to 1500 Volts FSD in 7 ranges. Input impedance 10 Mohm for DC, 1 Mohm for AC at low frequecies.

Frequency response : 10 Hz to 500 KHz. Accuracy for AC/DC voltages : ± 3 % of range. Measurement of Resistance from 0.2 Ohm to 1000 Mohm in 7 decade steps with ohm to 10 Mohm centre scale. Accuracy for resistance range : ± 5% of center scale upto 1 Mohm.

 

VARIABLE CAPACITORS (ELP.112.177)

In cabinet with transparent panel, continuously variable.

Range

.01 0-500 pF.

.02 0-360 pF.

 

VARIFICATION OF NETWORK THEORMS (ELP.112.178)

Objective : To verify Superposition, Norton ’s, Thevinin’s & Maximum Power Transfer Theorems.

Features : Instrument comprises of 3 fixed output DC Regulated Power Supplies of 12 V & 5V at 250 mA current, 4 moving coil meters, Circuit diagram for all the 4 theorems Printed on the front panel.

 VERIFICATION OF KCL AND KVL (ELP.112.179) Features : Instrument comprises of DC Regulated Power Supply 0-3 VDC/250mA, two round meters for voltage & current measurement, Combination of resistances mounted on front panel.

 

VOLTAGE STABLIZATION CHARACTERISTICS OF ZENER DIODE (WITHOUT LOAD RESISTANCES) (ELP.112.180)

Objective : To study input voltage Vs Output voltage Char. & Output voltage Vs Load Char.

Features : Instrument comprises of 1 DC Power Supply , two round meters to measure input voltage & output voltage, one Zener Diode mounted behind the panel & Connections brought out at terminals/sockets.

 

Wein Bridge Oscillator using Operational Amplifier IC 741 (ELP.112.181)

Objective : To study the Frequency and Waveshape generated by Wein Bridge Oscillator.

Features : Instrument comprises of 12V DC Regulated Power Supply, Circuit diagram Printed & components mounted on front panel.

 

ZENER DIODE CHARACTERISTICS APPARATUS (ELP.112.182)

Features : Instrument comprises of DC Regulated Power supply 0 -15VDC 150mA, two round meters for voltage & current measurement, Zener Diodes mounted behind the panel, connections of Supplies, meters & zener Diode brought out at 4mm Sockets.

To study Forward & Reverse V-I Characteristics of Zener diode.