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.

Compact modern design, 240V AC input.
Outputs:
i) Variable 0-20 volts DC unfiltered full wave at 8 Amp. without meter.
ii) Variable 0-25 volts AC at 10 Amp.

Both outputs are provided by overload protection.

Designed for primary and junior secondary school use.
Input:
240V AC
Outputs:
6, 12, 24V DC/AC regulated at 3 Amp. with LED voltage indicator and automatic shutdown on circuit overload.
Provided with illuminated ON/OFF switch and two 4 mm socket output terminals. Fitted with cooling fan.

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.

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

Mounted on transparent base, with 4mm color coded sockets, with circuit diagram printed for demonstration

Features :
* Two Simultaneous Sampling Channels At 20 Ms/ S
* Combination Of A True Dso And An Analog Oscilloscope One Touch Change Over.
* 2 Kilo Words Of Memory Storage/Channel
* Crt Readout And Cursors For Voltage Time And Frequency Measurement
* Direct Print Out Of Screen Display Using Hpgl Commands With Rs-232 Interface.
* Ruggedised Environment Endurance.
* 1mv/Div Sensitivity.
* Two Input Channels, Algebraic Add And Subtract With Ch2 Invt.
* A Sweep
* B Sweep ( Delayed Sweep ), Triggered.
* X-Y Operation
* Read Out / Cursor
* Menu Selection , Data Acquisition For Probe Factor, Smooth On/Off
* Pre-Trigger Observation
* Single Sweep Operation ( Storage Band Width 5 Mhz )
* X2 To X10 Horizontal Expansion In Digital Mode
* Temporary Holding Wave Forms Displayed
* Storing And Recalling A Reference Memory
* Scale Illumination
* Continuous Variable Hold-Off
* Z- Axis Input
* Large Inch Crt With Internal Graticule
* Tv-V,Tv-H Triggering
* Calibrator Out Put For Probe Adjustment

Also Available :
10 Mhz Single Trace Oscilloscope.
25 Mhz Dual Trace Oscilloscope.
30 Mhz Dual Trace Oscilloscope.
60 Mhz Dual Trace Oscilloscope.
40 Mhz Dual Trace Triggered Oscilloscope.
60 Mhz Dual Trace Triggered Oscilloscope.
100 Mhz 2 Channel , 6 Trace Oscilloscope.
100 Mhz 4 Channel , 8 Trace Oscilloscope.

PHASObjective : 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

Mounted on transparent base, with 4mm color coded sockets, with circuit diagram printed for demonstration.

The DC Regulated Power Supply is an easy to use, low ripple high regulation precision instrument.
Its unique feature is overload protection which makes it a safe power source for testing of electronic equipment.
Both voltage and current are precisely regulated with low output ripple. The power supply can be
operated in either constant voltage or constant current mode and is protected against overload or short
circuit by means of automatic cross-over characteristics from C.V. to C.C.
The output voltage and currents can be read on a meter. A switch is provided to select the LOW or HIGH'' range of current. Maximum voltage is 30 volts.

Specification
Indication of:
1-50
3 1/2 digital panel meter voltage/ currentor analog panel meter
Accuracy of DPM:
1-100
0.5% + 1 digit
Accuracy of Analog Meter:
1-500
3% fsD
Line Regulation:
1-1000
0.05% plus 2 mv(for + 10% change in mains voltage)
Protection:
1-5000
Automatic cross-over type of output characteristic from C.V. to C.C.
Power Source:
1-10000
220 V AC + 10% / 50Hz.

The unit provides a continuously varible E.H.T output from o to 5 kV d.c. with a low voltage output of 6.3 volt d.c. and is ideal for vacuum tubes etc. This unit uses a low voltage transistor inverter circuit and E.H.T. transformer. The high a.c. voltage is rectified and smoothened. A meter calibrated 0 t0 5 kV is connected to control the output voltage.
Output :
E.H.T.-0 to 5 kV d.c., continuously variable. Terminal output voltage indicated by meter.
Max short circuit current is safely at 3 mA. A heater supply 6.3 V a.c. at 4 A is fully isolated
& insulated for 5 kV.
Protection :
Mains 500 mA antisurge fuse, Output overload protected, E.H.T. max current limited to 3 mA

For Westminster Electromagnetic Kit giving 1 V full wave rectified d.c. and 1 and 2 V.a.c. outputs at 8 A max. The circuit diagram is printed on the top panel which also carries mains switch,light indicator and output sockets for d.c. and a.c. With 1.5 metre mains detachable cable

Suitable for spectrum tubes, in case, with on/off and selector switch. Output 5 KV, 2-3 millamps. Operates on 220V A.C. 50Hz + 10%.

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.

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.

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.

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.

Sine/Square Oscillator 1 Hz - 1 MHz.Wave Shapes : Sine & Square wave outputs at 4 mm sockets.
Frequency Range : 1 Hz - 1 MHz setable using fine & coarse controls.
Accuracy : ± 5 % on all the ranges.
Amplitude for sine wave output : 30 V Peak to Peak.
Amplitude for square wave output : 15 V Peak to Peak.
Output Impedance for sine wave : App. 600 Ohms.
Output Impedance for square wave : App. 400 Ohms

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.

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) 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.

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.

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 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.

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.