Maxwell Inductance Capacitance Bridge Manufacturer,Supplier and Exporter in India
Product Code : EL-SI-8074
Jlab Export is a leading Maxwell Inductance Capacitance Bridge Manufacturer,and suppliers in India
Maxwell Inductance Capacitance Bridge (code EL-SI-8074) is an AC bridge that measures inductance in terms of a standard capacitance, for BSc physics and electrical measurement practicals. It has a built-in 1 kHz sine-wave source, a null detector with digital display, decade dials R1, R4 and C4, fixed 1 kilo-ohm arms R2 and R3, 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 | Inductance, in terms of a standard capacitance |
| 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, for small AC signals at the output |
| Connections | 4 mm sockets; circuit layout spread out on the board for convenient working and clear understanding |
| R1 | Decade dial: x1, x10 and x100 ohm |
| R4 | Decade dial: x10, x100 and x1000 ohm |
| C4 (standard capacitance) | Decade dial, x0.01 µF (mfd) |
| R2 and R3 | Fixed, 1 kilo-ohm each |
| 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-8074 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Does It Compare with the JLab Maxwell Inductance Bridge?
| Model | Standard | Adjustable dials | Other listed details |
|---|---|---|---|
| This inductance–capacitance bridge (EL-SI-8074) | Capacitance, C4 (x0.01 µF) | R1 (x1 to x100 ohm), R4 (x10 to x1000 ohm), C4 | R2 and R3 fixed at 1 kilo-ohm; four unknowns; 1 kHz source; digital null detector |
| Maxwell Inductance Bridge | Inductance, L2 (x10 mH) | L2, R2 (x1 ohm), R3 and R4 (x10 and x100 ohm) | Teak wood case; four unknowns; 1 kHz source; digital null detector |
Pick this model when your practical calls for inductance measured against a capacitor, a common textbook form of the Maxwell bridge; pick the inductance bridge when you want a direct comparison of the unknown coil with a standard inductance.
What Is the Maxwell Inductance Capacitance Bridge Used For?
In the Maxwell inductance–capacitance bridge (often called the Maxwell–Wien bridge), the unknown inductance with its resistance forms one arm, and a standard capacitor in parallel with a resistance forms the opposite arm, with two plain resistances completing the bridge. At balance the inductance equals the product of the two plain resistances and the capacitance. With R2 and R3 fixed at 1 kilo-ohm each, every 0.01 µF step of C4 therefore corresponds to 10 mH of inductance, which makes the arithmetic easy for students. Because capacitors are easier to make accurate than standard inductors, this form of the bridge is widely taught, and it suits coils of moderate quality factor.
In use, connect one of the four supplied unknowns at the 4 mm sockets, switch on the 1 kHz source and set its amplitude, then adjust C4 and R4 alternately, trimming with R1 where needed, until the digital null detector reads a minimum. Record C4 to find the inductance and use the resistance dials to find the coil’s resistance from the balance equations.
What to Specify When Ordering
- Quantity — the minimum order is 10 bridges, supplied individually.
- Mains supply — give your local mains voltage so JLab can confirm the built-in source suits it.
- Companion bridges — add the Maxwell inductance, Anderson or Owen bridge to the same enquiry if your course uses several methods.
Frequently Asked Questions
What does this bridge measure?
Inductance, in terms of a standard capacitance set on the C4 decade dial in steps of 0.01 µF.
Are the source and detector built in?
Yes. A 1 kHz sine-wave source and a null detector with digital display are built in, and two sockets give the AC signal out.
Why are R2 and R3 fixed at 1 kilo-ohm?
Because the inductance at balance equals R2 × R3 × C4. Fixing both at 1 kilo-ohm makes each 0.01 µF of C4 equal to 10 mH, so the result can be read off quickly.
Are unknown inductances supplied?
Yes. Four unknown values are supplied with the instrument for practice.
How does it differ from the Maxwell Inductance Bridge?
That model compares the unknown with a standard inductance dial (L2) and is listed in a teak wood case; this one uses a standard capacitance dial (C4). See the comparison table above.
What are the minimum order and dispatch time?
The minimum order is 10 units. Dispatch is usually within 7–10 working days after each bridge is visually inspected; export transit time depends on destination and shipping method.
Who manufactures it?
JLab (Jain Laboratory Instruments Pvt Ltd), at its works in Ambala, Haryana, India.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a lab instruments manufacturer in India that was incorporated in 2017 and is based on Hargolal Road, Ambala, Haryana. The bridge is made in JLab’s own works rather than bought from a trader, so engineering colleges, universities, dealers and importers buy from the maker; every unit is visually inspected before dispatch, and repeat orders are handled by the manufacturer. JLab exports worldwide and ships to buyers in every region — Estonia in Northern Europe, Gabon in Central Africa, the Philippines in Southeast Asia, Ivory Coast in West Africa and Egypt in North Africa are among the examples. For tender supply, see the JLab lab tenders page.
Related Bridges and Accessories
- Self Inductance Anderson Bridge — a development of the Maxwell bridge, with R1, M and C dials and four unknowns supplied.
- Owen Bridge — an inductance bridge using two capacitor dials, C3 and C4.
- Three Dial Inductance Box — a dial-type inductance box for further known inductances.
- Head Phone — flexible headphones with high-resistance receivers, a traditional audio null detector.
Browse the Scientific Instrument range and the Indian Instruments section.
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
