Sales: sales@chemlabequipments.com,  
Sales: +919050603959,   U.S. Sales: +13124784806

Electrical

Electrical:

AC to DC motor Generator Demo

This apparatus allows students to easily compare and contrast an AC generator and a DC generator. The front of the apparatus has brushes designed to collect direct current (DC) through a split ring and the back of the apparatus has brushes designed to collect alternating current (AC).
This generator can demonstrate the principles of an electromagnet motor. This makes it great for experiments that need low current < 1 AMP.
It is an excellent activity model for study of the generation of electric current. The generator produces AC/DC current simultaneously when the hand wheel is turned. The generation of the AC/DC voltage is represented by bulbs.
Generators are used to produce a voltage or potential difference in wire. An outside source of energy is needed to turn the turbine in the generator. In this case, the mechanical energy to turn the generator can be supplied by a student’s hand. Generators in the real world can be powered using the kinetic energy of falling or moving water, a nuclear reactor, wind or steam to turn a turbine.

Accumulators

Battery storage, in transparent case, without acid, uncharged fitted with handle. Capacity 20 AH

Analog Ammeter Gauge 0-500mA

This tabletop microammeter is perfect for physics classroom demonstrations or experiments in electricity and electronics laboratories. Analog meter measures current in the range of 0 to 500 microamps, with a resolution of 10 microamps.
Connects into circuit via connecting leads (not included). Can be used with both 4mm stackable plug leads or as an ordinary screw terminal (spade type).

Analog Ammeter Gauge -20 to 100mA

This tabletop microammeter is perfect for physics classroom demonstrations or experiments in electricity and electronics laboratories. Analog meter measures current in the range of 0 to 100 microamps, with a resolution of 2 microamps.
Connects into circuit via connecting leads (not included). Can be used with both 4mm stackable plug leads or as an ordinary screw terminal (spade type).

Auto Transformer 2amp

Continuously variable voltage autotransformer, protected type. Comprises a tordially wound transformer with a continuously variable output voltage 0-260 volts A.C. steplessly under full load. Input 220- 240 volts A.C. 50 Hz. In stout metal case mounted on a metal base with two output terminals. Single phase with mains cable.

Banana Plugs

Moulded ABS Body 4 mm pin, 14 mm long spring insert. Overall length of plug 48 mm

Battery Box

Box for 4 ‘AA’ size batteries. Made of unbreakable plastic.

Battery Eliminators 1amp

• Allows teachers to conduct experiments requiring a variety of direct voltages while avoiding the decreased characteristics of dry cell
• Comprised of a heavy duty transformer wound with copper wire with high lamination to avoid losses
• Regulated, multiple tapping output 1.5, 3, 4.5, 6, 9, 12 Volts AC / DC
• Both AC and DC can be taken simultaneously

Battery Eliminators 2amp

This convenient, fixed-voltage Battery Eliminator is designed to be safe and reliable source of low voltage, DC power. It is ideal for use in classrooms and substitutes for a wide variety of batteries including AA, AAA, C, D, and 9-volt types. Allows teachers to conduct experiments requiring a variety of direct voltages while avoiding the decreased characteristics of dry cells.
Comprised of a heavy duty transformer wound with copper wire with high lamination to avoid losses.
Voltage is easily selected with the turn of a dial. Regulated, multiple tapping outputs of 1.5, 3, 4.5, 6, 9, 12 Volts DC.
Plugs into a standard electrical outlet, 120 V AC, 60 Hz. 2 amp max output. Battery Eliminator has dimensions of 7 x 5 x 4 inches.

Bell Demonstration Model

Mounted on a large panel, all parts easily visible, rigid constructions to show the connections on a vertical stand.
All the components of electric bell are mounted on a large panel. Allwiring is visible and parts are of large size. Operates on 4-6 volts DC.

Bicylce Dynamo Assembly

For showing slow AC on an oscilloscope or meter or for demonstrating the use of a dynamo in lighting a lamp. This apparatus has a cycle dynamo mounted on a base. Two 4 mm. socket terminals are provided for the dynamo output, connected in parallel with an M.E.S. lamp holder and 2.5 V bulb.

Bridge Rectifier

Bridge Rectifier consists of four diodes connected in a bridge circuit. The most common application of this circuit is the conversion of alternating current (AC) input into direct current (DC) output. Available in three current ratings
The unit has a circuit diagram printed so that student may gain an appreciation of the importance of diodes and how they can rectify alternating current to direct current. Current : 5 Amp / 100 V

Brownlee Electrolysis Apparatus

• Demonstrate electrolysis
• Rests on a battery jar and uses a 6V battery or 10V DC power supply
• Note: Power supply and battery jar are not included.
Two inverted test tubes are included
Includes: (1) Apparatus, (2) Corks, (2) Inverted Test Tubes
Simple and economical type of electrolysis apparatus. Platinumelectrodes are attached to insulated connecting rods which are attached to binding posts mounted on a non-conducting support. The support rests across the top of a battery jar (not included) and has two clips that each hold an inverted test tube. Operates on 6V battery or 10V DC power supply.

Bulb Holder In Series

Housed in ABS Box of size 145 x 70 x 30 mm Consisting of 4 bulb holders E10 with 6.5V bulbs, each bulb is connected in series by 4 mm terminal socket.

Buld Holder in Parallel

Housed in ABS Box of size 145 x 70 x 30 mm Consisting of 4 bulb holders E10 with 6.5V bulbs, each bulb is connected in parallel by 4 mm terminal socket.

Buld Holder-Plastic

Mounted bulb holder for easy connections to electrical circuits. Overall dia. 30 mm Supplied without bulb.

Capacitance Substitution Box

This is a very handy capacitance box which provides normally usable Electrolytic Capacitors of Six different values.1?fd - 35V DC Max. 47?fd - 35V DC Max.10 ?fd - 35V DC Max. 100?fd - 35V DC Max.22?fd - 35V DC Max. 220?fd - 35V DC Max.All these capacitors are of ± 10% tolerance & are of 35V working voltage.

Capacitor Charging & Discharging Characterstics

This is a very unique experiment with which student can understand the ultimate effect on the capacitors value when they are connected in Parallel or in Series. For the ease of understanding the audio & visual output devices are connected at the selected output combination in series or in parallel. The experimental board has four blocks e.g. Power supply, Audio visual output devices & Capacitor bank connected in Series & in Parallel. Values can be added to make different combinations using 4mm banana plug cables.

Cell Holders With Terminals on Base

For Single D-size battery
Cell Holder for D-size Battery, fitted on base with 4 mm sockets.

Changeover Switch

Components are mounted on bright blue bases, each with two 4 mm sockets.

Supplied in ABS box of size 95 x 70 x 30 mm, fitted with 4 mm sockets.

Supplied in ABS box of size 95 x 70 x 30 mm, fitted with 4 mm sockets.

Connecting Leads-Crocodile Clips

Insulated with crocodile clip at both ends, for 4 mm plug.Length 300 mm, Black

Connecting Leads-Stackable Plugs Both End

Connecting Leads with 4 mm stackable plug at both ends. The plugs have nickel plated split hollow pins and are connected by high quality flexible wire. Length 300 mm, Yellow

Connecting Leads-Stackable Plugs

Connecting Leads with 2 mm stackable plug at both ends. The plugs have nickel plated split hollow pins and are connected by high quality flexible wire. Length 150 mm, Black

Contact Key-Double

Comprising a plated spring arm with press knob, a contact stud, plated connecting strip and 4 mm terminals.

Contact Key-Single

This very basic but well made device is comprised of a plated spring arm with press knob, a contact stud, and plated connecting strip. Close a circuit simply.

Copper Wire 22-34gauge

• Bare copper wire
• 250g roll - measured by mass, lengths are approximated
• 30 SWG (32/33 AWG) - 0.0124" (0.32 mm) Dia.

Crocodile Clips

Spring-loaded, serrated jaws, with screw to clamp end of lead held in tubular extension, both sides insulated. Length 50 mm and jaws open 9 mm, Red Colour

Crocodile Lead Set

The set consists of 10 leads in assorted colours, each with a plastic sleeved crocodile clip at both ends. Length of leads 360 mm Max. current rating 0.5A continuous.

Daniel Cell

It consists of glass container, zinc cylindrical electrode, porous vessel and copper cylindrical electrode.

Decade Capacitance Box

All accurate capacitors to serve as laboratory standard, very useful in resonance timing / wave shaping / oscillator experiments, ± 5% accuracy. Voltage range 63 V.

Decade Inductance Box

Housed in box with dial and knob fitted with 4 mm output sockets.
Single Dial, 1 µH to 10 µH in steps of 1 µH

Decade Resistance Box-variable

• Standard decade resistance box
• Up to a total of 11,110 Ohms
• Resolution at 1, 10, 100, and 1000 Ohms
Includes: (1) Resistance box
This decade resistance substitution box provides 4 decade ranges asgiven below and total value 0 to 11110 Ohms with a resolution of 1 Ohm. Each decade is selected using rotary switch. All resistance values are of ±1% tolerance and 2 watts maximum ratings.

Demonstration Meter

Specially designed to teach easily constructional features of permanent magnet moving coil type.
These meters are developed to teach easily constructional features of permanent magnet moving coil type. Movement is fitted in transparent wooden box and internal electrical connection are made visible. These meters can be used for demonstration and also for actual measurements. Accuracy Class : 2.5 Scale Length : 110 ± 2 mm Overall size : 80 x 100 x 190 mm approx.

Demonstration Motor-St. Louis

For the study of the fundamental principals of electric motor and generators.
The motor consists of a two pole D.C. armature. The brush holder, with two heavy binding post terminals, may be rotated for experiments. The permanent bar magnets are supported by spring brass clamps which are unadjustable in the horizontal plane to show the effects of pole separation. Complete with two bar magnets, a two pole DC armature.

Digital Ammeter

Portable type, having large display of 3½ digits, type LCD, power 9 Volts battery, accuracy +1 digit

Digital Multimeter-Advanced

Easily measure Inductance, Capacitance & Resistance. Comes with a pair of test clips etc.
D.C. Voltage 200 mV - 1000 V ± 0.5% ± 1 digitA.C. Voltage 2 V - 750 V ± 0.8% ± 3 digitD.C. Current 200 ?A - 10A ± 0.5% ± 1 digitResistance 200 Ohms - 20 MOhms ± 0.8% ± 1 digitMax. Display 1999Display size 25 x 60 mm, 3½ digit LCDRange ManualTransistor Test YesDiode Measurement YesContinuity Test YesAccessories Battery, Testing leads with Instruction Manual, CE-marked

Digital Multimeter-Economy

Our Most Economical Model, A large 3½ LCD display and low cost makes this ideal for beginning electronics courses. Features overload protection and includes battery and test leads.
D.C. Voltage 200 mV - 1000 V ± 0.5% ± 2 digitA.C. Voltage 200 V - 750 V ± 1.2% ± 10 digitD.C. Current 200 ?A - 10A ± 1% ± 2 digitResistance 200 Ohms - 2000 kOhms ± 1.2% ± 8 digitMax. Display 1999Display size 16 x 48 mm, 3½ digit LCDRange ManualTransistor Test YesDiode Measurement YesContinuity Test YesAccessories Battery, Testing leads with Instruction Manual, CE-marked

Digital Voltmeter

Portable type, having large display of 3½ digits, type LCD, power9 Volts battery, accuracy +1 digit.DC voltage rangesa) 0 - 199.9 mV - 200 mVb) 0 - 1.99 V - 2Vc) 0 - 19.9 V - 20 Vd) 0 - 199.9 V - 200 VDC current rangesa) 0 - 199.9 ìA - 200 ìAb) 0 - 1.99 mA - 2mAc) 0 - 19.9 mA - 20 mAd) 0 - 199.9 mA - 200 mAe) 0 - 10 Amp.

Dual Ammeter & Voltmeter

This dual purpose bench meter offers an analogue quadruple range. A slide selector for amps / volts automatically selects internal shunting, indicating whether on amps or volts reading and secures the input sockets from the possibility of incorrect connection. Input is made via a dual 4 mm or terminal type connection and zeroing is achieved by the screw adjustment on the front of the meter.DCA 100 mA - 100 mA - 1A - 5ADCV 100 mV - 1V - 10V - 50 V + 5%

Dynamo-Economical

A 6 V motor, hand driven mounted on base. When driven produces a nice glow in bulb.

Economy Electricity Kit

Ideal for introductory electronics.
A basic assortment of circuitcomponents including:l10 pcs. MES Lamp holdersl10 pcs. MES Bulbl1 pc. 6V Buzzer with connecting leadsl1 pc. Electric Motor, 3-6 Vl5 pcs. DPDT Slide Switchl1 pcs. 1.5V Cell Holderl10 pcs. Crocodile Leads

Economy Switch

This simple switch is constructed from a durable plastic with metalFahnstock clips for wire attachments.

Electrode Holder

Plastic Strip of size 78 x 27 x 5 mm fitted with two crocodile clips to take rod or foil electrodes. Each crocodile clip has a 4 mm socket for lead connection. Without electrodes.

Electrolysers Demonstration

Made of high impact polystrene in 2 parts, transparent cup and base. Cup is cone shaped and can be easily placed over the electrodes. Base is fitted with two 4 mm banana plugs and 40 mm opening in which electrodes can be mounted easily. Total height 175 mm Cup height 80 mm and dia 100 mm approx.

Electrolytic Capacitor

Supplied in ABS box of size 95 x 70 x 30 mm fitted with 4 mm sockets, used to energy conversion experiments and to demonstrate that energy stored in capacitor is proportional to V2. Capacitor Value 1µF

Fixed Resistance 1ohm-10Kohm

Resistance wire mounted on ABS box of size 95 x 70 x 30 mm, fitted with 4 mm sockets.

Galvanometer

Moving Coil Meters DC Type MR - 100 Clear acrylic front cover, fullyenclosed economically priced and offer + 2.5% accuracy. Thisgalvanometer can be converted into any type of Ammeter / Voltmeterusing shunts. 20 - 0 - 100 mA Resistance 1000

Insulated Socket Terminal

Mounted with captive insulated head, with 4 mm socket , nuts and washers.

Knife Switch

Supplied in ABS box of size 95 x 70 x 30 mm, fitted with 4 mm sockets.

Lamp holder

Used with carbon filament lamp, fitted with 4 mm sockets.
Mounted on ABS moulded base of size 95 x 70 x 30 mm to be used with carbon filament lamp, not provided, fitted with 4 mm sockets.

Leclanche Cell

A cell with depolarizer. Consisting of glass container, zinc cylindrical electrode and bonded electrode, graphite and manganese dioxide consisting of porous vessel, carbon electrode and 200 g of manganese dioxide as well as 160 g of ammonium chloride.

LED Boards-Red circuit

These Simple Circuit modules can be used to construct simple circuits of the type normally implemented on, for example a Worcester Circuit Board. Very useful for younger pupils to learn more applications of circuits anddevices. The modules are having 4mm plug connections.

LED

Supplied in ABS box of size 95 x 70 x 30 mm, fitted with 4 mm sockets.

Light Dependent Resistor board

These Simple Circuit modules can be used to construct simple circuits of the type normally implemented on, for example a Worcester Circuit Board. Very useful for younger pupils to learn more applications of circuits anddevices. The modules are having 4mm plug connections.

Morse Key

On rectangular wooden base with two terminals, pivoted contact armwith adjustable spring.

Moving Coil Ammeter 0-5amp

Moving Coil Meters DC Type EDM-80 Square Clear acrylic front cover, fully enclosed economically priced and offer + 2.5% accuracy. Scale length 60 mm Overall size 125 x 80 x 80 mm with zero adjustment and connection terminals.

Moving Coil Ammeter

This tabletop ammeter is perfect for physics classroom demonstrations or experiments in electricity and electronics laboratories. Analog meter measures current in the range of 0 to 10 Amps, with a resolution of 0.2 A.
Connects into circuit via connecting leads (not included). Can be used with both 4mm stackable plug leads or as an ordinary screw terminal (spade type).
Overall dimensions: 5 x 3.5 x 3.25 inches

Moving Coil Galvanometer

Moving Coil Meters DC Type EDM-80 Square Clear acrylic front cover, fully enclosed economically priced and offer + 2.5% accuracy. Scale length 60 mm Overall size 125 x 80 x 80 mm with zero adjustment and connection terminals.
Moving Coil Meters DC, Galvanometer 1 - 0 - 1 mA to 500mA

Moving Coil Milliammeter

Moving Coil Meters DC Type EDM-80 Square Clear acrylic front cover, fully enclosed economically priced and offer + 2.5% accuracy. Scale length 60 mm Overall size 125 x 80 x 80 mm with zero adjustment and connection terminals.
Moving Coil Meters DC, Milliammeter 0 - 500 mA

Moving Coil Voltmeter

Moving Coil Meters DC Type EDM-80 Square Clear acrylic front cover, fully enclosed economically priced and offer + 2.5% accuracy. Scale length 60 mm Overall size 125 x 80 x 80 mm with zero adjustment and connection terminals.

Nichrome Resistance Wire 22 Gauge-34 Gauge

• High Grade
• Designed for science experiments but can also be used in heaters and electrical appliances
• Maximum operating temperature 1150°C
• Electrical resistivity at 20°C ? mm2/m - 1.25

Ohms Meter Shunt Type

Ohm’s meter is designed for measuring the resistance in electric circuits. It is housed in unbreakable case with front clear cover. The dry battery cell is fixed to stand from the bottom side. Shunt Type 0 - 2 k?

Ohms Meter

Designed for measuring the resistance in electric circuits. Housed in unbreakable case with front clear cover.
Ohm’s meter is designed for measuring the resistance in electric circuits. It is housed in unbreakable case with front clear cover. The dry battery cell is fixed to stand from the bottom side. SERIES Type 0 - 100?

Plug Switch One way

Two brass blocks with 4 mm insulated terminals are mounted on a moulded base, an accurately tapered plug with a fluted top fits into the tapered hole between the two blocks, ensuring very low contact resistance.

Post Office Box

For accurate work, in moulded box, ohms mentioned on panel. Split brass contact blocks hold precision cut, interchangeable plug having moulded black fluted tops. Coils of constantan wire, double silk covered are wound co-efficient. Accuracy ± 0.1%.

Potentiometer Mounted

Range : 0-10K ohms, 1W + 5% continuously variable 0-470K ohms, 1W + 5% continuously variable
A convenient box with 2 mounted potentiometers for various electrical experiments, 4mm safety sockets are provided. Range : 0-10K ohms, 1W + 5% continuously variable 0-470K ohms, 1W + 5% continuously variable

Potentiometer

Mounted on a polished hardwood baseboard. Supplied WITH JOCKEY.
Comprising 24 SWG constantan wire stretched along a meter scale, subdivided in cm and mm clamped to stout plated brass end plates. The terminating strips are provided with heavy duty 4 mm socket terminals and the whole is mounted on a polished hardwood baseboard. Supplied WITH JOCKEY. Dimension 1.13 mm x 80 mm x 50 mm appro

Push Swtich

Mounted on ABS moulded base of size 95 x 70 x 30 mm and to be connected to an electrical circuit with 2 safety sockets of 4 mm diameter.

Resistance Board

To investigate the relation between electric resistance and conductor section, length and material. 6 wires are tensed next to each other on a polished wooden base and connected on both ends with 4 mm sockets. Length of wires 1 m dimensions 1065 x 90 mmMaterial Dia. mmConstantan 1Constantan 0.5Constantan 0.7Copper 0.7Copper 0.35

Resistance Box Plug Type

For accurate work, in moulded box, ohms mentioned on panel. Split brass contact blocks hold precision cut, interchangeable plug having moulded black fluted tops. Coils of constantan wire, double silk covered are wound co-efficient. Accuracy ± 0.1%. 1-50 Ohms to 1-10000Ohms, Total Ohms 110, No. of Coils 8

Resistance Box

Provides a very good learning technique making different combination to obtains the desired value.
This resistance box provides 10 standard identical values each of 10 Ohms, 2 watts. These resistances are of ± 1% tolerance. The beautiful feature of this simple R. Box is that many different combinations can be made using these values in series or in parallel or in both ways.

Resistance Unit

This single 10 Ohm resistor is encased in an easy to use plastic enclosure. This resistance unit is useful for physics classroom demonstrations or experiments in electricity and electronics laboratories.
Connect to other resistance units or circuit elements via connecting leads (not included). Can be used with both 4mm stackable plug leads or as an ordinary screw terminal (spade type).
Vmax:3.0 V, Imax:0.3 A. Overall dimensions: 5 x 5 x 4 cm.

Rheostat-Covered

With protected cover, newly designed, wounded with oxidised constantan wire on a tube. Fitted with 4 mm safety socket terminals. Resistance ± 10 % compared to nominal value.

Rheostat-Open Type

For use as series resistors or potentiometers. Open type slide wire type with a variety of resistance and current carrying capacity. Oxidised Constantan wire is wound on pipe to give perfect insulation. Three 4 mm socket terminals are provided. Supports are made of ABS moulded. Diameter 43 mm.

Rheostat-Standard

• Rheostat is wound with heavily oxidized constantan (Copper-Nickel Alloy) wire on a vitreous enameled steel tube.
• There is a heavy duty sliding contact made of phosphor bronze and nickel plated for corrosion resistance.
• There are 2;4 mm terminal posts which are fitted to facilitate external connection conventional 4 mm plug

Series & Parallel Demonstration

Parallel & Series Circuit Demonstration can be easily takenapart and put back together by both students and teachers. Included isa sturdy base, 8 detachable metal bars, 10 thumb screws and detailed instructions as well as inquiry based student activities and capture sheets. This versatile piece of equipment can help students to distinguish between series and parallel circuits and come up with a conceptual and mathematical understanding of how voltage, current, and resistance behave in a series or parallel circuit.

Shadow Effect Maltese Cross & Shadow

Upon focussing at a point, cathode rays generate intense heat shown by the red heating of platinum foil.
An object star obstructing the path of cathode rays casts its shadow onthe fluorescent painted wall facing cathode rays. Fitted on a plastic base

Simple Cell

Glass jars 15 x 10 cm length x dia. Complete with zinc and copper plates.

Simple Switch

Supplied in ABS box of size 95 x 70 x 30 mm, fitted with 4 mm sockets.Fitted with simple ON/OFF switch.

SIngle Pole Double throw switch

These Simple Circuit modules can be used to construct simple circuits of the type normally implemented on, for example a Worcester Circuit Board. Very useful for younger pupils to learn more applications of circuits anddevices. The modules are having 4mm plug connections

Socket for banana plugs

Moulded ABS Body 2 mm total length 11 mm Available in different colours.

Standard Resistance Coils-High Current.

Having terminals, Each coil is non-inductively wound on insulatedbobbins with constantan wire, enclosed in plastic case. Accuracy +0.1%.0.1 to 1000 ohms

Variable Battery Power Supply

• Allows you to connect up to 4 D cell batteries in series or parallel (comes configured in series, can be converted though - may require additional wires)
• Perfect for electronics, physics, or even biology experiments
• Batteries and cables not included

Voltameter

Platinum electrodes, with two graduated test tubes, 15 ml capacity.Mounted on moulded base fitted with two 4 mm banana sockets.

Wheatstone Bridge

Bridge has broad, heavily plated brass strips mounted on polished hardwood base.
Wheatstone Bridge One Meter, Four - Gap