Demonstrative Transformer (for high school) Manufacturer,Supplier and Exporter in India

Demonstrative Transformer (for high school) (Product Code: SCL241/039) is a working model of a U-shaped steel core transformer that lets students see every part of a real step-down transformer: the steel core that carries the magnetic flux, a clamped bar that closes the field lines, and two enamelled copper coils on a wooden or plastic support. The 1400-turn primary takes 220 V and the 400-turn secondary delivers 60 V, so the turns ratio can be checked directly against measured voltages. It is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India.

Specifications

Typical Use

With the closing bar clamped in place, the teacher energises the primary and students read both voltages on AC meters. Dividing 1400 turns by 400 turns and comparing the result with the ratio of the measured voltages is the central calculation of the topic. Loosening or removing the bar then shows a clear drop in secondary output, because the flux now leaks through air instead of staying in the steel, which explains why real transformers use closed cores.

A small lamp on the secondary lets the class compare input and output power and discuss efficiency and heating losses. Because the primary works at 220 V, the model should be connected and switched only by the teacher, using insulated leads, and all rewiring should be done with the supply off. It suits any transformer experiment kit for school physics labs.

Manufacturer

This demonstration transformer comes from Jain Scientific Equipments Private Limited, which manufactures teaching apparatus at its Ambala, Haryana factory and sells it, with the rest of its electromagnetism range, under the ScienceLab brand. For more about the company and its manufacturing base, open the company profile.

Related Lab Equipment

These items are used with the transformer when teaching electromagnetic induction:

• Analogue Voltmeter AC — reads primary and secondary voltages on a large dial.
• Multimeter — checks voltages and currents while comparing input and output.
• Demountable Transformer Kit — lets students assemble their own coil combinations.
• Transformer Parts Kit — for hands-on work on how cores and windings fit together.
• U-Shaped Electromagnet — introduces the magnetised core before the transformer lesson.

See more in our Lab Equipment category.

Frequently Asked Questions

What are the coil ratings?
The primary is rated 220 V / 0.3 A with 1400 turns and the secondary 60 V / 1 A with 400 turns. Total transformer power is 30 W.

Can students operate it themselves?
The primary runs at 220 V, so it should be connected and switched by a teacher. Students can safely take readings from the secondary side under supervision.

What does the closing bar do?
It completes the magnetic circuit across the open ends of the U-core. Removing it shows how much output is lost when flux has to cross an air gap.

Is the base wooden or plastic?
The support is listed as wooden or plastic. Mention your preference in the enquiry and we will confirm what is available.

Are meters included?
No meters are listed with this model. AC voltmeters or a multimeter are needed for measurements; contact us to add them.

Is a test report or calibration certificate provided?
This is a teaching model rather than a measuring instrument. If your purchase rules call for any documentation, please discuss it with us before ordering.

What details should a tender quotation include?
The code SCL241/039, the quantity, delivery location and any required specification. We supply institutions in India and international markets.

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Last updated: 24 September 2026