Higher Science Educational Instruments

Product Details:

Transistor Characteristics  ETTE-1308

Experimental training board has been designed specifically to study the transistor input and output characteristics in different modes i. E. Common base, common emitter and common collector. This training board is an improved version with germanium npn & pnp transistors in addition to silicon npn & pnp transistors and four meters. The board is absolutely self contained and requires no other apparatus. practical experience on this board carries great educative value for science and engineering students.

Object of Transistor Characteristics

• To study and plot the transistor input and output characteristics in the following configurations

• Common emitter mode.
• Common base mode.
• Common collector mode.

Features of Transistor Characteristics

• The board consists of the following built-in parts :
• 01. Two 0-10v d. C. At 200ma, continuously variable power supplies for base emitter & collector emitter junctions.
• 02. Two d. C. Ammeters, 65mm rectangular dial with switch selectable ranges of 200 ma &10ma.
• 03. Two d. C. Voltmeters, 65mm rectangular dial with switch selectable ranges of 1v and 10v.
• 04. Two silicon (npn & pnp) transistors and two germanium (npn & pnp) transistors.
• 05. Adequate no. Of other electronic components

Product Details:

Operational Amplifier Trainer ETEE-1307

Practical experience on this board carries great educative value for Science and Engineering Students.
List of experiments Following experiments can be performed :

• Basic operational amplifier circuit
• Inverting amplifier
• Non-inverting amplifier
• Inverting A.C. amplifier
• Non-inverting A.C. amplifier
• High input impedance inverting amplifier
• High input impedance non-inverting amplifier

SOURCE FOLLOWERS

• OP- AMPS AS ANALOGUE COMPUTER ELEMENTS
• Inverting summing amplifier
• Non-inverting summing amplifier
• Subtractor
• Differential amplifier
• A.C. differential amplifier
• Adder subtractor
• Multiplication by a constant
• Division by a constant
• Integrating amplifier for DC input signals
• Integrating amplifier for AC input signals
• Differentiator amplifier
• Non-inverting differentiator
• FUNCTION GENERATOR
• Sine Wave generator using wien bridge network Square Wave generator

• Pulse generator
• Square and Triangular wave generator
• Saw tooth generator
• Synchronised sawtooth generator with negative going pulse trigger
• Synchronised sawtooth generator with positive going pulse trigger

MULTIVIBRATORS

• Astable multivibrator
• Monostable multivibrator
• Bistable multivibrator

FILTERS
Low pass active filter High pass active filter Band, Notch filter
VOLTAGE AND CURRENT REGULATOR

• Basic reference voltage source
• Basic reference voltage source with buffered output
• Basic reference voltage source with negative output
• Negative voltage reference source with buffered output
• Positive regulator with variable buffered output
• Negative regulator with variable buffered output
• Buffered reference source
• Basic non-inverting voltage controlled current source
• SIGN CHANGER

• Sign changer with variable output
• Switch select sign changer

PHASE SHIFT CIRCUIT

• Constant amplitude lag circuit
• Constant amplitude lead circuit

SIGNAL PROCESSING CIRCUITS

• Diodes
• Rectifier
• Half wave rectifier
• Full wave rectifier
• Filtered full wave rectifier
• Detectors
• Peak detector
• Buffered peak detector
• Inverting peak detector
• Zero crossing detector
• Buffered zero crossing
• Clippers
• Positive peak clipper
• Negative peak clipper
• Self buffered series clipper
• Shunt clipper
• DC restorer
• Dead Band Response
• Feed back circuit with dead band response
• Variable dead band circuit
• LIMITERS

• General purpose unipolar limiter, Bipolar zener limiter, Input current limiter, Diode bridge limiter using one zener, Adjustable bipolar limiter

COMPARATORS

• Fast precision voltage comparator
• Single ended comparator with hysteresis & clamped feed back
• Comparator for signals of opposite polarity
• Comparator for A.C. coupled signals

INSTRUMENTATION AMPLIFIER

• Basic differential input instrumentation amplifier
• Instrumentation amplifier with high input impedance

OUTPUT DISPLAYS FOR COMPARATOR

• LED driver
• Lamp driver

Diode And Zener Diode Characteristics  ETEE-1109
Experimental Training Board has been designed specifically for plotting the forward and reverse bias characteristics of a Germanium semiconductor Diode, and a Zener Diode. The board is absolutely self contained and requires no other apparatus. Practical experience on this board carries great educative value for Science and Engineering Students.

Object

• To study and plot the forward & reverse bias characteristics of a Germanium semiconductor Diode.
• To study and plot the forward & reverse bias (breakdown) characteristics of a Zener Diode.

Features

• The board consists of the following built-in parts :
• 01. 0-10V D.C. at 10mA, continuously variable regulated Power Supply with low ripple & hum and integral current limiting resistor.
• 02. D.C. Voltmeter, 65mm rectangular dial, with switch selectable ranges of 1V and 10V.
• 03. D.C. Microammeter, 65mm rectangular dial, with switch selectable ranges of 50 mA and 10mA.
• 04. A Germanium semiconductor Diode mounted behind the panel.
• 05. A Zener Diode mounted behind the panel.
• 06. Adequate no. of other electronic components.
• 07. Mains ON/OFF switch, Fuse and Jewel light.
• The unit is operative on 230V ±10% at 50Hz A.C. Mains.
• Adequate no. of patch cords stackable from rear both ends 4mm spring loaded plug length ½ metre.
• Good Quality, reliable terminal/sockets are provided at appropriate places on panel for connections / observation of waveforms.
• Strongly supported by detailed Operating Instructions, giving details of Object, Theory, Design procedures, Report Suggestions and Book References.
• Weight : 3 Kg. (Approx.)
• Dimension : W 340 x H 110 x D210

Product Details:

Series And Parallel Resonance ETEE-1311

Experimental training board has been designed specifically for study of Series and Parallel Resonance in LCR Circuits, measurement of Q and dielectric constant of a liquid.Practical experience on these boards carries great educative value for Science and Engineering Students.

To study the following :

• Series resonance for different values of resistances, capacitances, inductances and plotting of resonance curves.
• Parallel resonance for different values of resistances,capacitances, inductances and plotting of resonance curves.
• Measurement of Q for both series and parallel resonances.
• Measurement of dielectric constant relative permitivity of a liquid.

Features :

The board consists of the following built-in parts :01. Three inductances made on ferrite cores, selectable by a switch.02. Three capacitances with low loss factor, selectable by a switch.03. Three resistances , selectable by a switch.Adequate no. of patch cords stackable from rear both ends 4/ 2mm spring loaded plug length ½ metre.Good Quality, reliable terminal/sockets are provided at appropriate places on panel for connections/ observation of waveforms.Strongly supported by detailed Operating Instructions, giving details of Object, Theory, Design procedures, Report Suggestions and Book.

References :

• Weight : 3 Kg. (Approx.).
• Dimension : W 340 x H 110 x D 210.

Other Apparatus Required :

• Decade Audio Frequency Generator.
• A.C. Millivoltmeter.
• A.F. Millivoltmeter.

Product Details:

Satellite Communication Lab Educational Trainer  ETEE-1313

Satellite Communication Lab Features

• Microwave 2.4 GHz operation satellite trainer
• 500MHz spectrum analyser providedfele
• Tele-command and telemetry facility
• Different baud rates PC-PC link.
• Emulation of variable signal fading, variable thermal noise
• Variable propagation delay.
• Total 4 variable path loss at uplink and downlink channels
• High RF output power and low noise
• LCD display of PLL synthesized frequency in transmitter,
• Receiver and satellite emulator
• Condenser microphone and speaker for audio link
• Camera and video to VGA converter for video link
• Satellite has built-in antennas, transponder for link
• Helix (LHCP X 2 & RHCP X 2), log periodic X 2, Dish X 2 & Patch X 2 for linear & circular polarization study
• Signal monitoring outputs at uplink & downlink
• C/N and S/N measurement facility

Technical specifications satellite uplinking transmitter

• Frequency :Frequency : 2.4, 2.427, 2.454 & 2.481 GHz PLL synthesized ISM Band
• Display : LCD 16X2 backlit spurious output : 30 dB typical
• RF Output Z : 75 Ohms unbalanced
• RF output level : +3 dBm nominal
• Path Loss : Upto 35dB variable attenuation
• Audio 1 : Int. 1KHz sine wave / Ext Mic Ext. function generator waveform
• Audio 2 : Int. 1KHz sine wave / Ext Mic Ext. function generator waveform
• Video : Colour/monochrome camera/VCD
• Waveform : upto 5MHz function generator
• Digital : Max bit rate 500KHz typical
• RS232 : PC serial port compatible intput
• Tele-command : Selectable 4 bit binary input with selectable 4 addresses
• Enable : Telecommand frame available at digital input
• FM deviation : Variable on audio and video/data

Satellite downlink receiver

• Frequency :2.4, 2.427, 2.454 & 2.481 GHz PLL Synthesized ISM Band
• Display : LCD 16 X 2 Backlit
• RF Input Z : 75 Ohms Unbalanced
• Sensitivity : -85dBm
• Path Loss : 20dB typical variable attenuation
• Audio 1out : Speaker inbuilt/output
• Audio 2 out : Speaker inbuilt/output
• Video Out : 5MHz bandwidth, 1V p/p
• Digital : Max bit rate 500KHz typical TTL
• Rs232 : PC serial port compatible output
• Down-converter : 400-500MHz output for spectrum analysis
• Telemetry : 4 bit binary LED output with Selectable 4 addresses
• Valid/Error : Tele-command frame available at correction digital output
• RSSI Out : Received signal strength output for C/N measurement

Product Details:

Item code: 11891

• Compact designed light source, microscope & condensers
• Easy to operate and understand
• Condenser System can be easily Disassembled for cleaning and Inspection
• Accurate measurement of plate voltage, plate separation, time and distance of droplet is done with this apparatus.

Additional Information:

• Item Code: 11891

Product Details:

Item code: 1188

• Quick, accurate experiment
• Big Base for providing stability during experiment
• Made up of Brass Spindle & other critical components on CNC for precision accuracy
• Smooth & frictionless motion of telescope collimator & venire scale
• Robust instrument and the main structure is of heavy cast metal with bright plated fittings

Additional Information:

• Item Code: 1188
• Pay Mode Terms: T/T (Bank Transfer)

Product Details:

Item code: 11890

• Using illuminating lens and filter gives collimated polarized light
• 3 minutes against 6 minute of the conventionally available model
• Triple shadow field is produced on Half Wave Length plate by the polariser

Additional Information:

• Item Code: 11890

Product Details:

Item code: 11885 

• Compact, Steady, Easy to Perform
• All components including Sodium Light, Microscope, Power Supply & Optics are housed in single piece compact body (Stand alone setup)
• Very fine scale to measure the fringes
• Smooth moving Collimating Facility
• Microscope and Reflecting units are provided with X-V-Z direction motions within compact body

Additional Information:

• Item Code: 11885

Product Details:

Kerr Effect Experiment Kit ETEE-1303

Description :
- Safe and Convenient
- Mounted on specially designed hexagonal optical bench.
- Power Supply using safety sockets.
- Kerr Cell and Monochromatic Light Filters imported from Leybold of Germany.

Product Details:

Spectroscopy Experiment Kit  ETEE-1306

Description :
- Quick, accurate experiment.
- Big Base for providing stability during experiment
- Made up of Brass Spindle & other critical components on CNC for precision accuracy.
- Smooth & frictionless motion of telescope collimator & venire scale.
- Robust instrument and the main structure is of heavy cast metal with bright plated fittings.0