Maxwell Inductance Bridge Manufacturer,Supplier and Exporter in India
Product Code : EL-SI-8073
Jlab Export is a leading Maxwell Inductance Bridge Manufacturer,and suppliers in India
Maxwell Inductance Bridge (code EL-SI-8073) is a Maxwell bridge for measuring unknown inductance by comparison with a built-in standard inductance, used in BSc physics and electrical measurement labs. Housed in a teak wood case, it has a 1 kHz sine-wave source, a null detector with digital display, a decade inductance dial L2 in steps of 10 mH, resistance dials R2, R3 and R4, and four unknown values supplied with it. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Get a quote: use the Add To Cart enquiry button below, or send your quantity and destination through the contact page.
Specifications
| Parameter | Detail |
|---|---|
| Measures | Unknown inductance (Maxwell bridge) |
| Case | Teak wood, with all parts built in |
| AC source | Built-in sine-wave signal of 1 kHz; two sockets for the AC output |
| Source controls | Amplitude, switch and indicating lamp on the Bakelite board (listed as “The Amplitude of AC switch indicating lamp is provided on the bakelite board”) |
| Detector | Built-in null detector with digital display |
| Connections | 4 mm sockets; circuit layout spread out on the board for convenient working and clear understanding |
| L2 (standard inductance) | Decade dial, x10 mH |
| R2 | Decade dial, x1 ohm |
| R3 and R4 | Two decade dials each: x10 and x100 ohm |
| Unknowns supplied | Four unknown values |
| Quality check | Each bridge is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| Product code | EL-SI-8073 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Does It Compare with Other JLab Inductance Bridges?
| Model | Standard used | Listed dials and fixed arms |
|---|---|---|
| This Maxwell bridge (EL-SI-8073) | Inductance dial L2 (x10 mH) | R2 x1 ohm; R3 and R4 x10 and x100 ohm; four unknowns supplied |
| Maxwell Inductance Capacitance Bridge | Capacitance dial C4 (x0.01 µF) | R1 x1, x10, x100 ohm; R4 x10, x100, x1000 ohm; R2 and R3 fixed at 1 kilo-ohm; four unknowns supplied |
| Self Inductance Anderson Bridge | Capacitance dial C (x0.01 µF) | R1 x1, x10, x100 ohm; M x10, x100, x1000 ohm; R2, R3, R4 fixed at 1 kilo-ohm; four unknowns supplied |
| Owen Bridge | Capacitance dials C3 and C4 (x0.1 µF) | R3 x10, x100, x1000 ohm; R2 x100 ohm; R1 fixed at 1000 ohm |
All four are listed with a 1 kHz sine-wave source and a digital null detector. Choose this model when the practical compares an unknown coil directly with a standard inductance; choose one of the capacitance-standard bridges when the syllabus asks for inductance in terms of capacitance.
What Is the Maxwell Inductance Bridge Used For?
In Maxwell’s inductance comparison bridge, the unknown inductance and its resistance sit in one arm and a variable standard inductance with a series resistance (here L2 and R2) in the adjacent arm, while R3 and R4 form the ratio arms. At balance the unknown inductance equals L2 multiplied by the ratio of the ratio arms, and its resistance follows from R2 in the same way. Because both inductive and resistive balance must be met, students adjust L2 and R2 in turn until the detector reaches a true minimum. The experiment is part of AC bridge practicals in BSc physics and in electrical measurement courses at engineering colleges and polytechnics.
In use, connect one of the four supplied unknowns at the 4 mm sockets, switch on the 1 kHz source and set a suitable amplitude, choose R3 and R4, and alternately adjust L2 and R2 until the digital null detector reads its lowest value. Record the dial settings and calculate the unknown, then repeat with the other unknowns or with a coil of your own.
What to Specify When Ordering
- Quantity — the minimum order is 10 bridges, supplied individually.
- Mains supply — state your local mains voltage so JLab can confirm the built-in source suits it.
- Companion bridges — add the Maxwell inductance–capacitance, Anderson or Owen bridge if your syllabus uses more than one method.
Frequently Asked Questions
What does the Maxwell Inductance Bridge measure?
Unknown inductance, by comparing it with the built-in standard inductance dial L2 in steps of 10 mH.
Are a signal source and detector built in?
Yes. A 1 kHz sine-wave source and a null detector with digital display are fitted in the teak wood case, with two sockets giving the AC signal out.
What adjustable arms does it have?
L2 is a decade dial of x10 mH, R2 a decade dial of x1 ohm, and R3 and R4 each have two decade dials of x10 and x100 ohm.
Are unknown inductances supplied?
Yes. Four unknown values come with the instrument for practice measurements.
How is it different from the Maxwell Inductance Capacitance Bridge?
This bridge compares the unknown with a standard inductance (L2). The inductance–capacitance version measures inductance in terms of a standard capacitance dial (C4) instead; see the table above.
What are the minimum order and dispatch time?
The minimum order is 10 units. Dispatch is usually within 7–10 working days, with a visual inspection of each bridge first; export transit depends on destination and shipping method.
Who manufactures it?
Jain Laboratory Instruments Pvt Ltd, trading as JLab, at its works in Ambala, Haryana, India.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, an Indian manufacturer of electrical and electronic lab instruments, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. This bridge is built at JLab’s own works, so universities, colleges, dealers and importers buy direct from the maker rather than through a trader; each unit is visually inspected before dispatch, and repeat orders are handled by the manufacturer. JLab exports worldwide and ships to buyers in every region — Latvia in Northern Europe, Barbados in Central America and the Caribbean, Brazil in South America, Angola in Central Africa and Rwanda in East Africa, for instance. Tender information is on the JLab lab tenders page.
Related Bridges and Accessories
- Three Dial Inductance Box — a dial-type inductance box, also listed in two-, four- and five-dial versions, for further known inductances.
- Self and Mutual Inductance Coils — a primary and secondary coil pair, useful as unknowns and for induction experiments.
- Schering Bridge — the capacitance bridge from the same teak-cased series with a 1 kHz source.
- Oscilloscope — a single-beam solid-state oscilloscope for viewing the source waveform.
See the Scientific Instrument range or the Indian Instruments section for more.
Request a Quote
JLab quotes for this bridge directly as its manufacturer. Use the Add To Cart enquiry button on this page, or send the quantity (minimum 10 units), your mains voltage, any companion bridges and your delivery location through the contact page.
Last updated: 8 October 2026
