Physics Electrical lab equipment supplies, Laboratory equipments electronic kits supplier, exporter India dynamos, ac electrical dynamo generator, dynamo model ac, bench meter, voltage measuring meter, current measuring meter, electromagnetic bell model, demonstration of electric bell model, demonstration dynamo, dynamo model, dynamo generator model, electric motor, electric motor 3d model, Daniel cell, gravity cell, Making electricity from chemicals, crocodile clips connectors, copper wire bare, bare bright copper wire, bare copper wire spool, contact key single, Single Contact Key, single key contact, auto transformers, variable auto transformer, transformer auto, ac ammeters, digital ammeters, moving coil ammeter, Sliding contact Rheostat made by resistance wire wound also single Tube Protected & rotary rheostat for electronic experiments & technology education projects and kits, Electricity and Conductivity Supplies and aids.
This model uses the same basic assembly as the electric motor, mounted on a base plate which also carries a hand drive pulley 120 mm in diameter coupled to the smaller dynamo pulley by a rubber belt. Electric output is via a pair of 4 mm socket & a light emitting diode is provided as simple output indicator. The model may also be used as motor on a 4 to 8 volts DC supply.
A simple demonstration of a Dynamo Model mounted on a wooden base. Hand driven by a gear. Simplified open frame construction which can be readily understood without detriments to its essential similarity to real machine. A 2 pole armature wound by enamelled copper wire to rotate in U shape magnet in pivot. While in rotation process through the gear wheel by hand, the bulb provided glows.
A simple dynamo model to differentiate AC from DC. Mounted on a wooden base. Two bulbs are provided for AC & DC current(s). The model is hand driven & when operated, the AC bulb shows flickering light to indicate AC current while the other bulb glows fully indicating DC current.
A simple demonstration of a Dynamo Model mounted on a wooden base. Hand driven by a gear. Simplified open frame construction which can be readily understood without detriments to its essential similarity to real machine. A 2 pole armature wound by enamelled copper wire to rotate in U shape magnet in pivot. While in rotation process through the gear wheel by hand, the bulb provided glows.
Mounted on a wooden base, all parts easily visible, rigid constructions to show the connections on a vertical stand.
A model of the simplest form of DC motor; having 3 armatures - 2 pole, 3 pole, & 4 pole, wound with enamelled copper wire, & a permanent magnetic field provided by a removable bar magnet. The construction is completely open & all components are readily observable. A disc type commutator is incorporated & external connection to the phosphor - bronze bushes is by means of a pair of 4 mm sockets. The motor shall operate on 4.5 to 9 volts DC.
Moving coil type. Basic sensitivity of meter is 5mA, 100mV f.s.d. The meters can be used to demonstrate the working principle of AC or DC ammeters or voltmeters with interchangeable dials. Different dials are available. Housed in a Plastic/Wooden case, with plastic in front and rear.
Laminated core to form a roughly rectangular core 92 x 56 x 20 mm approx. With a cross section of 20 x 12 mm & is cut across the middle to produce 2 equal ‘C’s. A strong spring steel strip is provided to hold the two halves together.
Newton Colour Disc Mounted On Motor - Motor Mounted on a wooden base 90 x 90 x 100 mm, workable on 2 to 4 volt DC with fan blade & Newton’s colour disc.
12V 3V for use with smoke cell & multiple light source. a) Wooden case b) Plastic case
Bulbs with MES cap suitable for flash Lamp.
Continuously variable voltage auto transformer, protected type.
Used for measurement of small quantities of electrical charge.
For use with interscale demonstration meters. Each dial comprises a laminated plastic panel with sealed moulded box at one end which contains the shunt or voltage multiplier appropriate to the scale.
For Wheatstone Bridge & Potentiometers. Metal knife edge mounted in plastic handle, 90 mm long x 12 mm dia with terminal at the upper end.
Double Pole Double Throw, mounted on a bakelite base with screw holes for bench fixing etc. Overall Dimensions 100 x 15 x 30 mm.
Single pole double throw, mounted on bakelite base with plated spring metal contacts and screw connectors.
Suitable for mounting screw threaded type MES bulb. Round base with holes for screw mounting.
Double contact type lamp holder made of brass insert in plastic body mounted on insulated plastic base with 4mm socket terminals.
Insulated, PVC coated, with one end crocodile clip and at the other end banana plug.
Digital Meter for general purpose laboratory use housed in tough case use of a 3½ digit cover most of the ranges. Displays 13 mm characters; operates on mains with accuracy ± 0.3% typical. Linearity 0.2% typica. Available in ranges from 1.999mA AC to 199.9mV DC.
With three colour coded 4 mm socket terminals & zero adjustment. Normal internal resistance 0.05 & 0.1 ohms. Available up to 3A.
With three colour coded 4 mm socket terminals & zero adjustment. Available up to 15 V.
With 2 colour coded 4 mm socket terminals Available in ranges from ranges upto 50µA.
Moving coil for D.C. measurements, Any single range 0-1, 1.5, 3, 5, 10 Amps.
Moving coil type for DC use only. Sensitivity approx. 200mA/division, coil resistance 10W scale, 50 mm, long with anti - parallax mirror, is set at a convenient reading angle in plastic case with pair of colour coded 4 mm socket terminals & zero adjustment. FSD 1200 mA per division 20mA. Available upto 50mA.
DC measurements only, accuracy ±2% at f.s.d. scale, with anti-parallax mirror; set at a convenient reading angle in plastic case. With pair of colour coded 4 mm socket terminals & zero adjustment. Available in ranges from ranges upto 500µA.
DC measurements only, accuracy ±2% at f.s.d. scale, with anti-parallax mirror; set at a convenient reading angle in plastic case. With pair of colour coded 4 mm socket terminals & zero adjustment. Available in ranges from 1mA to 500 mA.
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DC measurements only, accuracy ±2% at f.s.d. scale, with anti-parallax mirror; set at a convenient reading angle in plastic case.
For DC Milliamp or Millivolt measurements only; accuracy to BS 89 Class index 1.5. Taut band suspension with single linear scale, 63 mm long with centre zero, is housed on projection type transparent plastic case mounted on an inclined base at a convenient reading angle. With pair of colour coded 4 mm socket terminals & zero adjustment. Momentary overload 1000%; can withstand momentary connection across the terminals of a 12 V accumulator.
DC measurements only, accuracy ±2% at f.s.d. scale, with anti-parallax mirror; set at a convenient reading angle in plastic case.
Moving iron type or AC or DC measurements; accuracy ±2.5% at f.s.d. Available in ranges from 1A to 10A.
AC & DC measurements. Flush mounting in plated metal case with mounting flange 73 mm diameter at front & wire leads at rear. Range 0 to 15 V.
Range 0 to 300 V. Accuracy ±2% at f.s.d. scale, with anti-parallax mirror; set at a convenient reading angle in plastic case.
Mounted on wood base, with adjustable pivots, variable spring tension & variable movement. Three terminal posts are incorporated for make or break operation.
An open construction on a wood base with twin coils. Adjustment is provided on the armature spring tension & the movement. Two terminal posts are incorporated, with adjustable pivots, variable spring tension & variable movement. Three terminal posts are incorporated for make or break operation, mounted on wood base.
An open construction on a wood base with twin coils. Adjustment is provided on the armature spring tension & the movement. Two terminal posts are incorporated..
Low cost moving coil multimeter for AC/DC & resistance measurements, having a knife edge pointer moving over a two colour scale. With 175µA f.s.d. sensitivity. Range selection is by pins. Test leads stay firmly in the terminals. Two 1.5V batteries included.
DC voltage upto 1000 V in five ranges; AC voltage upto 750 V in five ranges.
DC voltage upto 1000 V in five ranges; AC voltage upto 750 V in five ranges; DC current upto 10 A in five ranges; AC current upto 10 A in five ranges. Resistance upto 200M ohms in seven ranges, with buzzer.
Enclosed in a borosilicate glass tube 33 cms long, 14 mm dia. Four terminals ( 2 mains, 2 compensatory ) resistance approx. 2.8 ohms. Fundamental interval 1 ohm. Range 0 - 500º C.
Five brass blocks 9 mm thick with brass terminals mounted on a bakelite base. Accurately tapered plug with bakelite moulded top is fitted into the gap between the brass blocks.
Two brass blocks 9 mm thick with brass terminals mounted on a bakelite base. Accurately tapered plug with bakelite moulded top is fitted into the gap between the brass blocks.
Four brass blocks 9 mm thick with brass terminals mounted on a bakelite base. Accurately tapered plug with bakelite moulded top is fitted into the gap between the brass blocks.
Three brass blocks 9 mm thick with brass terminals mounted on a bakelite base. Accurately tapered plug with bakelite moulded top is fitted into the gap between the brass blocks.
Insulated, PVC coated, with 4mm Banana plugs.
4MM screw connections for leads.
Plug in type. The heavy brass contact blocks are bond to the vulcanite plated by a double nut system. The plugs & lugs are cut to a finer taper & are interchangeable. The plug heads are machine moulded of bakelite.
Decade Dial type, with 4 decade (two decade having 4 ratio arms 1, 10, 100 and 1000 ohms and decade resistance units, total resistance 11110 ohms). Coils of constantan wire double silk covered are wound non-inductively. It is fitted with two enclosed tapping keys for battery and galvanometer. Accuracy + 0.01% of unit coils.
Decade Dial type, with 5 decade (two decade having 4 ratio arms 1, 10, 100 and 1000 ohms and decade resistance units, total resistance 11110 ohms). Coils of constantan wire double silk covered are wound non-inductively. It is fitted with two enclosed tapping keys for battery and galvanometer. Accuracy + 0.01% of unit coils.
Decade Dial type, with 6 decade (two decade having 4 ratio arms 1, 10, 100 and 1000 ohms and decade resistance units, total resistance 11110 ohms). Coils of constantan wire double silk covered are wound non-inductively. It is fitted with two enclosed tapping keys for battery and galvanometer. Accuracy + 0.01% of unit coils.
Slide wire pattern with one wire, 1 meter long, mounted on a polished wooden base with boxwood rule graduated 0 - 100 cm x 1 cm with three socket type 4 mm terminals to enable the apparatus to be used either as a one meter or two meter instrument with sliding jockey.
Slide wire pattern with 4 wire, 24 SWG , Constantan connected in series to give effective length of 4 meters; with two terminals. With jockey having knife edge press keys type giving accurate contacts & a terminal for connection.
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The heavy brass contact blocks are bound to the vulcanite plate by the double nut system. The plugs & lugs are cut to a fine taper & are interchangeable. The plug heads are machine moulded of bakelite. Each resistor independently mounted with double leads. Accuracy of constantan coils 0.1% for lower values & 0.5% for higher values. Fitted in polished wooden box.
Resistance coil on a bakelite case round in shape with 2 terminals and value written on it..
Range 100 ohms to 10 M given by 16 preferred value carbon resistors 100, 200, 470 ohms, 1, 2.2, 4.7, 10, 22, 47, 100, 220, 470 k ohms, 1, 2.2, 4.7, & 10 M ohms. Rating 0.5 W continuous, 1W max. In wooden case 90 x 90 x 40 mm with rotary selector switch having on/off position & a pair of 4 mm sockets & 19 mm spacing on the top panel.
Range of resistance unit based on a high metal film element.
Rotary brush type switch with phosphor bronze contacts. Screw terminals. Maximum current 10 A mounted on an insulating base. Dimensions 100 x 100 x 70 mm.
Wound on vitreous enamelled hexagonal steel tube instead of porcelain tube to make it unbreakable., comprising a layer of resistance wire wound on an insulating, heat resistant tube (porcelain) which is supported by cast metal feet.
Variable upto 345 ohms at 1.2 A rating for use as a series resistor or a potentiometer.
Comprising a layer of resistance wire wound on an insulating, heat resistant tube (porcelain) which is supported by cast metal feet. A sliding contact & three 4 mm socket terminals are provided, one terminal being connected to the sliding contact & the other two to the ends of the winding, enabling the unit to be used as a Rheostat or potentiometer.
The Coil is wound on a moulded plastic ring & mounted on a tubular plated metal handle through passes the 1 meter long flexible leads. Wound with insulated copper wire, the coil has a resistance of 1.8 ohms approx. The mean dia is 34 mm & the number of turns 100 are clearly marked on the coil former. Dimensions : 150 x 40 x 60 mm.
Standard type of spade, with an insulator, 4mm socket connector. a) Black b) Red
Bakelite case with lamp & scale arrangement. Taut band type movement sufficiently shock proof. Alcomax magnet properly aged for high stability. Clamp 150 mm long, easy replacement for lamp. Operates at mains 220 Volts AC or 6 V DC; band switch for 5 shunt powers 1, 1/10, 1/100, 1/1000 & short circuit. Dimensions 220 x 225 x 132 mm approx.
Single pole, ON/OFF, moulded plastic body, Max current 5Amp, 220V AC, Two way.
4 gap type. Mounted on a polished wooden base, with 24 SWG Constantan wire, with brass strips & 4 mm socket terminals for use with either wire or standard 4 mm plugs for galvanometer & other connections.
Two gap type. Mounted on a polished wooden base, with 24 SWG Constantan wire, with brass strips & 4 mm socket terminals for use with either wire or standard 4 mm plugs for galvanometer & other connections. Boxwood scale graduated 0 - 100 cm x 1 mm. With knife edge jockey having terminal.
Suitable for the construction of precision, stable resistances coils. The wire is made of an alloy of manganese, nickel and copper and have very low temperature co-efficient. These wires are available in various dia i.e
A model of the simplest form of DC motor; having 3 armatures - 2 pole, 3 pole, & 4 pole, wound with enamelled copper wire, & a permanent magnetic field provided by a removable bar magnet.
For Simple Cell; 150 x 100mm height x diameter.
Comprising a heavy-gauge copper outer vessel with an internal perforated shelf for copper sulphate crystals, a porous pot and an amalgamated zinc rod fitted with a wooden supporting cap. The zinc rod and copper vessel are each provided with a 4 mm. socketed terminal.
Jar, Made of High density plastic.
Charged porous pot 150 x 60 mm height x diameter.
Each plate is 150 x 50 x 3 mm.
Each plate is 125 x 10 cm length x dia.
Glass jars 15 x 10 cm. length x dia.
'H' form constructed, Platinum wires are sealed into the bases of the limbs & are connected to the terminal at the top of the case. E = 1.0186 V at 20ºC.
Multiplate type, 2 volts 120 amps. Hard rubber container with plastic lid & screw terminals.
With charge indicating system 2 volts 20 AH on 20 Hrs rate in plastic container.
With charge indicating system 2 volts 45 AH on 20 Hrs rate in plastic container.
Available in Dimensions
For Daniel Cell; 150 x 12.5 height x diameter, fitted with brass terminal.
For Daniel Cell; 150 x 12.5 height x diameter, fitted with a terminal.
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