Schering Bridge Trainer Manufacturer,Supplier and Exporter in India
Product Code : EL-AET-1475
Jlab Export is a leading Schering Bridge Trainer Manufacturer,and suppliers in India
Schering Bridge Trainer (code EL-AET-1475) is an analog electronics training board for finding the value of an unknown capacitance by the Schering bridge method. A 1 kHz sine-wave oscillator drives the bridge and an audio amplifier with a speaker acts as the null detector, so the balance point is heard rather than read from a meter. JLab builds the trainer at its own works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Experiment | Measurement of the value of an unknown capacitance by the Schering bridge |
| Bridge circuit | Schering bridge circuit with arm values |
| Unknown capacitors | Three unknown values, selected by a band switch |
| Resistance selection | Band switch selecting one of six different resistance values |
| Balancing control | Potentiometer for balancing the bridge |
| Signal source | 1 kHz sine-wave oscillator, output 0–15 Vpp |
| Null detector | Audio amplifier and speaker |
| Internal power supply | ±12 V DC at 100 mA, IC-regulated, internally connected |
| Mains controls | Mains on/off switch, fuse and jewel light |
| Mains supply | 230 V ±10%, 50 Hz AC |
| Patch cords | Stackable, with 4 mm spring-loaded plugs, half a metre long |
| Terminals | Terminals/sockets at the appropriate places on the panel for connections and for observing waveforms |
| Operating instructions | Detailed, giving the object, theory, design procedures, report suggestions and book references |
| Weight | 3 kg (approx.) |
| Dimensions | W 340 x H 110 x D 210 |
| Quality check | Each trainer 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-AET-1475 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Does It Compare with Other JLab Capacitance Bridges?
| Model | AC source | Null detector | Unknowns and adjustment |
|---|---|---|---|
| This trainer (EL-AET-1475) | 1 kHz sine-wave oscillator, 0–15 Vpp output | Audio amplifier and speaker | Three unknown capacitors on a band switch; six resistance values on a band switch; balancing potentiometer |
| Schering Bridge | Built-in 1 kHz sine-wave source | Null detector with digital display | Five unknown capacitors on a rotary switch; ratio, resistance and capacitance decade dials; teak wood case |
| DE Sauty Bridge | Separate Bridge Oscillator required | High-impedance headphone | Two decade resistances and two decade capacitors as the bridge arms; compares the capacitance of two capacitors |
Pick this trainer when students should find the null by ear, with the oscillator built into the trainer itself. The Schering Bridge sets its arms on decade dials and shows the null on a digital display, and the DE Sauty Bridge compares two capacitors through a headphone, driven by a separate Bridge Oscillator.
What Is the Schering Bridge Trainer Used For?
The Schering bridge is a four-arm AC bridge for measuring capacitance and a standard experiment in electrical and electronic measurement courses at diploma and engineering level and in BSc physics labs. When the bridge is balanced, the unknown capacitance is calculated from the known values of the other arms, so students practise both the balancing and the bridge equations. The panel sockets also allow the bridge signals to be viewed on an oscilloscope.
What to Specify When Ordering
- Quantity — the number of trainers for your measurement or electronics lab.
- Other bridge boards — if the course also covers Wien, Anderson or De Sauty bridges, list those trainers on the same enquiry.
- Oscilloscope — a separate item; add it to the enquiry if your lab needs one for viewing waveforms.
Frequently Asked Questions
How is the balance point found on this trainer?
By ear. The tone heard from the detector becomes quietest when the potentiometer and the resistance switch bring the bridge to balance, and that setting is used to work out the unknown capacitance.
Why measure capacitance with a Schering bridge?
Its balance conditions do not depend on the supply frequency, and it represents a real capacitor’s losses as well as its capacitance, which is why the method is widely used for testing capacitors and insulation. On this trainer the object of the experiment is the value of the unknown capacitance.
What supply does the trainer need?
It works on 230 V ±10%, 50 Hz AC mains. Inside, a ±12 V DC IC-regulated supply rated at 100 mA is internally connected.
Are operating instructions provided?
Yes. The trainer is backed by detailed operating instructions that set out the object, the theory, the design procedure, suggestions for the report and book references.
What information is needed for an export quotation?
Send the number of trainers, the destination country and port or city, your preferred delivery terms such as FOB or CIF, any packing or labelling needs, and a tender reference if the purchase is for a tender.
Who manufactures the Schering Bridge Trainer?
JLab, the trading name of Jain Laboratory Instruments Pvt Ltd, produces it in Ambala, Haryana, and quotes for it as the maker.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a maker of electronics and electrical measurement trainers in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. This bridge trainer comes from JLab’s own works and not from a trading house, so colleges, polytechnics, dealers and importers deal directly with the manufacturer; every unit is visually inspected before it leaves, and repeat orders go back to the same team. JLab exports worldwide and ships to buyers in every region — Canada in North America, Burkina Faso in West Africa, South Korea in East Asia, Brazil in South America and Jamaica in Central America and the Caribbean, to give a few examples. Details for institutional purchases are on the JLab lab tenders page.
Related Bridge Trainers and Instruments
- Wien Bridge — measures capacitance by the Wien series and parallel bridge methods, with a 1 kHz oscillator and speaker null detection.
- Measurement of Inductance and Capacitance — a board for finding unknown capacitors and inductors selected by band switches.
- Anderson Bridge — the inductance counterpart, measuring the inductance of a coil by the Anderson bridge method.
- Dual Trace Oscilloscope — a two-channel cathode ray oscilloscope, quoted separately, for viewing waveforms.
Browse the full Analog Electronics Trainer range or all Electronics Lab Equipments.
Request a Quote
To get a quotation, press the Add To Cart enquiry button on this page or write through the contact page with the number of trainers, the delivery destination and any other bridge boards you want quoted together.
Last updated: 22 October 2026
