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Photo Diode Characteristics Apparatus
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Photo Diode Characteristics Apparatus

(HL-8006 )
To plot a current versus Intensityof light at different value of volatges. Instrument consist of DC regulated Power Supply, two round meters for Voltage & current measurement, Photo diode mounted separately on the panel, connections of supplies & photo diode brought out at terminals/sockets with Light Source.

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Photo Cell Charcteristic Apparatus
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Photo Cell Charcteristic Apparatus

(HL-8007 )
Objective: To plot Forward & reverse Charcteristics of a Selenium Photo Cell verify Inverse Square Law of Light.
Features: selenium Photo Cell mounted in meal box having window for injecting light, light source with 60W lamp, Photocell kit with DC micro ammeter of 1000mA & DC Millivoltmeter of 500mV.

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Decade Resistence Box
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Decade Resistence Box

(HL-8009 )
Code
No.
Sub Division TOTAL
140
141
142
143
144
Single Dial
"
"
"
"
0.1
1
10
100
1000
1
10
100
1000
10000
145
146
147
148
Two Dials
"
"
"
0.1 &1
1 & 10
10 & 100
100 & 1000
11
110
1100
11 K
149
150
151
Three Dials
"
"
0.1, 1 & 10
1, 10 & 100
10, 100 & 1000
111
1110
11.1 K
152
153
Four Dials
"
0.1, 1, 10 & 100
1, 10, 100 & 1 K
1111
11.11 K
154 Five Dials 0.1, 1, 10, 100 & 1000 11.111 K
155 Six Dials 0.1, 1, 10, 100, 1 K & 10 K 111.111 K
Switches Used : Brass with silver Plating
Resistance used : Wire wound, wound non-inductively on Bakelite spools, heat treated & processed for ageing, varnish coated. All resistances are of 1 watt.
Wire Used : Constantan Accuracy 0.1%, Manganin 0.05%.

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Two Stage RC coupled Transistor Amplifier
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Two Stage Rc Coupled Transistor Amplifier

(HL-8010 )
Objective: Study Frequency Response of single stage & two stage RC Coupled Common Emitter Transistor Amplifier.
Features: Instrument comprises of DC Regulated Power Supply, Circuit diagram is printed, components mounted on the front panel.

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Hartley Oscillators
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Hartley Oscillators

(HL-8011 )
Objective : To study the Frequency and Wave shape generated by a Hartley Oscillator.
Features : Instrument comprises of 12V DC Regulated Power Supply, circuit diagram Prinetd & components mounted on front panel.

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Triode Valve Characteristics Apparatus
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Triode Valve Characteristics Apparatus

(HL-8012 )
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. there round meters for voltages & current measurement, valve diagram is printed on Front Panel, connections of supplies & Valve brought out at 4mm socket.

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Study of Adder And Subtractor
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Study Of Adder And Subtractor

(HL-8013 )
Objective : To verify the Truth Table of Digital Half Adder, Half Subtractor, Full Adder & Full Subtractor.
Features : Instrument comprises of DC Regulated Power Supply 5VDC/150mA for logic inputs, 3 SPDT switches provided for selecting logic '1' & logic '0', 2 Red LED output indicator, circuit diagram printed their respective IC's placed inside the cabinet & connections brought out at sockets.

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Energy Band Gap for Semi Conductor Diode
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Energy Band Gap For Semi Conductor Diode

(HL-8014 )
Objective : To plot reverse saturation current Vs Temperature in reverse bioased PN Junction Diode.
Features : Instrument comprises of DC regulated Power Supply 0-20VDC/150mA two round meters for voltage & current measurement, one PN junction Diode (Ge Type) is kept in Oven, connections of supplies, Meters & Diode brought out at 4mm sockets. Also provided with Oven wih temperature control knob.

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Thermistor Characteristics Apparatus
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Thermistor Characteristics Apparatus

(HL-8015 )
Objective : To plot negative Resistance co-efficient Characteristics of a Glass Thermistor.
Features : Instrument comprises of DC Regulated Power Supply 00-10VDC/150mA two round meters for voltage & current measurement, one Glass Thermistor is kept in Oven, connections of supplies, Meters & Thermistor brought out at 4mm sockets. Also provided with Oven with temperature control knob.

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BATTERY CHARGER
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Battery Charger

(HL-8016 )
  • A Battery Charger 2-12VDC/1 Amp
  • B Battery Charger 2-12VDC/2 Amp
  • C Battery Charger 2-12VDC/3 Amp
  • D Battery Charger 2-12VDC/5 Amp
  • E Battery Charger 6-12VDC/3 Amp with fine current control.
  • F Battery Charger 6-12VDC/5 Amp with fine current control.

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STUDY OF INSTRUMENTS OPERATIONAL AMPLIFIER IC-741 WITH DIGITAL PANEL METERS
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Study Of Instruments Operational Amplifier Ic-741 With Digital Panel Meters

(HL-8017 )
Objective : Calculate the volatge Gain of instruments Amplifier and draw a curve between V & AR.
Features : Instruments comprises of one 12 VDC regulated Power supply,2DC regulated short circuit and overload protected continuously variable power supplies,3 no- IC 741 placed inside & connections brought out at sockets. One potentiometer and combination of resistance placed on the front panel.

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LDR CHARACTERISTIC APPARATUS
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Ldr Characteristic Apparatus

(HL-8018 )
Objective : To plot a graph,current Vs Intensity of Light at diffrent value of voltage.
Features:- Instrument comprises of DC regualted Power Supply 0-3 VDC/150ma,two round meters for volatge & current measurement.LDR mounted on the panel, connections of supplies & LDR brought out at 4mm sockets. Lamp holder with 60W bulb are given with this apparatus.

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OHMS LAW APPARATUS
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Ohms Law Apparatus

(HL-8019 )
Objective : To verify Ohm's Law i.e V=1R
Features:- Instruments comprises of two moving coil meters to measure voltage & current, one wire wound Potentiometer. Circuit diagram printed & connections brought out at terminals for connection 6 volts battery & one wire wound Resistance.

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BH CURVE APPARATUS
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Bh Curve Apparatus

(HL-8020 )
Objective : To Trace Hystersis curves on CRO using Resistance,Capacitance & Inductance.
Features : Instruments comprises of two moving coil meters to measure voltage & current, one wire wound Potentiometer. Circuit diagram printed & connections brought out at terminals for connection 6 volts battery & one wire wound Resistance.

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HALL EFFECT EXPERIMENT
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Hall Effect Experiment

(HL-8021 )
Features:-
The set up consists of electromagnet of 7.5 kg, power supply for electromagnet 0-100V, 6 amp with meter, Germanium crystal mounted & its digital constant current power supply 0-20 ma/0-200 mv fitted with two digital meters for Hall's voltage & crystal current. Gauss meter digital 0-20k. Gauss with Hall probe.

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