Pocket size multimeter is self-contained portable test set that measures a wide range of Voltages, Currents and Resistances. This is an indispensable instrument for servicing and maintenance of electronic equipment, radio and television. The meter is so designed and its movement is heavily damped to avoid damage to the meter movement.

Continuously variable voltage auto transformer, protected type. Comprises a torridly wound transformer with a continuously variable output voltage 0 - 260 volts AC. Steplessly under full load. Input 220 to 240 volts AC, 50 Hz. In stout metal case mounted on a metal base with mains cable

4mm Pin, 18mm long spring insert and hard plastic body. Overall lenght of plug 40mm.

Standard Model Output Voltage/Current

SI 1A 2-12 VDC/3 Amp
SI 12B 2- 12 VDC/4 Amp
SI 12C 2- 12 VDC/5 Amp

ANALOG TO DIGITAL (A/D) CONVERTOR

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.

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.

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

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.

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.

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.
CONVERTION OF GALVANOMETER INTO A CURRENTMETER 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.

DC Regulated Power Supply 1. 0-30V/1.0Amp 2. 0-30V/2.0Amp 3. 0-30V/5.0Amp

Designed with pot core stability for standard laboratory use. Useful as an oscillator element, wave shaping and resonance experiments, bridge experiments. Fuse protection for safety, + 3% accuracy.

Comprises U & I cores of low loss magnetic material, to form a closed core of cross section 25 mm in plane of laminations, 32 mm perpendicular to them is an I - core of length 102 mm. U core external height 102mm. Internal height to take bobbin length 77 mm. Pair of pole pieces, each 65x30x25 mm with on end shaped to part of a cone for maximum flux density. Hole drilled through total length along cone axis to take a light beam. Pole pieces will accept supertrods & shading ring (provided with accessories) & may be clamped on any separation on U core, or in contact as a non laminated I - core. Cast aluminium alloy stand consisting of a heavy base on four rubber feet with removable clamping arms. Maximum dimensions of base 190x200x115 mm. Channel 35 mm wide & 3 mm deep to take transformer core, extends across full width. Integral support for arms, to rear, is below the level of the pole pieces. Arms pivot on steel spindle with adjustment of knobs to rear bringing hard rubber pads at front end of arms to bear on transformer core. Synthetic hammer finish except of clean metal in channel & 4 mm hole to take on earthing plug lead. Complete with all the accessories.

To study VI Characteristics of Diac.
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.

DC Voltage : 200mV-1000V+ 0.5%+2
AC Voltage : 200mV-750V+ 1.2%+10
DC Current : 200ohmA-10A + 1%+2
Resistance : 200Ohm-2000KOhm + 0.8% + 2
Maximum Display : 1999
Display Size : 16 x 48 mm
Range : Manual
Standard Accessories : Battery, Testing Probes with Instruction Manual

Objective : To study & verify Truth tables of RS, D Type, T type, JK & Jk Master slave flip flops using TTL IC .

Features : Instrument comprises of DC Regulated Power Supply 5VDC/150mA, 4 logic inputs, logic 1 & logic 0 selectable using SPDT switches, 1Hz monoshot clock pulse, two output indicators, Circuit diagram for RS, JK &JK Master slave flip-flops are printed, their respective ICs placed inside the cabinet & connections brought out on the sockets. 1 NOT gate for converting RS flip-flops to D type flip-flop.

Dual Channel Continously variable DC Regulated power supplies

• 0 -± 30V/1 Amps

• 0 - ± 15V/1 Amps

• 0 - ± 15V/2 Amps

dual channel continuously variable
0 - ± 30V/2 Amps

Objective : To study charge of an electron using Thomson method.

Features : High voltage Power Supply with One Meter provided to measure the deflection voltage. Complete with Intensity, Focus & Deflection controls.
It is provided with accessories such as compass box, set of ELICO magnets, Teak wood stand with CRT mounted, Teak wood U stand with scale on both theorems for placing magnets.

DC Regulated Power Supply for Electroforsis Appts. (Solid state) Output Voltage : 0-300VDC/100 mA (With reversing switch to change the polarity at the output terminals), L.T. Voltage : 6.3VAC/2Amp. Complete with two analog Meters

Objective : To plot Reverse saturation current Vs Temperature in reverse biased PN Junction Diode.
Features : Instrument comprises of DC Regulated Power Supply 0-20 VDC/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 4 mm Sockets. Also provided with Oven with temperature control knob.

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.

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.

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.

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.