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A.C. Generator
The A.C. Generator (Product Code: SLE/EAM/38) is a transparent, hand-held generator in which a permanent magnet spins inside a coil of wire, producing an alternating voltage at two 4mm sockets. It lets students investigate the same principle that powers a bicycle dynamo, with every moving part in view. Made by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, it is a straightforward piece of electromagnetic induction kit for India’s secondary schools and for physics departments abroad.
Specifications
| Parameter | Detail |
|---|---|
| Principle | Permanent magnet rotating inside a coil of wire |
| Drive | Hand-held, direct drive to the rotating magnet (no gearing) |
| Housing | Transparent, showing all the inner workings |
| Output | About 0.5V peak to peak, swinging from + to – each revolution; magnitude varies with speed |
| Waveform | Not a simple sine wave, because of the geometry of the mechanism |
| Output terminals | Two 4mm sockets |
| Display options | Centre-zero moving coil voltmeter or oscilloscope |
| Weight | 120g |
| Dimensions (L x W x H) | 150 x 55 x 55 |
Typical Use
Connected to a centre-zero moving coil voltmeter and turned slowly, the generator makes the needle swing one way and then the other on every revolution — a direct, visible answer to the question of what “alternating” means. Turning faster makes the swings larger, so students can link output magnitude to speed of rotation. Because the drive has no gearing, the magnet turns exactly as fast as the hand, which keeps that cause-and-effect relationship easy to follow.
For a more advanced physics demonstration kit, connect the sockets to an oscilloscope instead. The trace is not a textbook sine wave, and that is a teaching opportunity: with a PC oscilloscope the waveform can be stored and examined in detail, prompting discussion of how magnet and coil geometry shape the output of real generators. Since the peak-to-peak output is about 0.5V, choose a sensitive range on the meter or scope.
Manufacturer
This generator comes from Jain Scientific Equipments Private Limited, an apparatus maker in Ambala, Haryana, that uses ScienceLab as its trading name. The company produces electricity and magnetism teaching equipment for classrooms at home and abroad; read more on our company profile.
Related Electricity and Magnetism Equipment
Equipment that helps students read and extend the A.C. Generator’s output:
- Galvanometer, Centre Zero Universal Meter — a centre-zero meter to show the alternating swing
- Oscilloscope Dual Trace — displays the output waveform shape
- Demonstration Dynamo Model — a larger model for comparing generator designs
- Faraday’s Law Apparatus — explores the induction law behind the generator
- Stackable Leads — 4mm leads for the output sockets
Explore the whole Electricity and Magnetism range for more induction apparatus.
Frequently Asked Questions
How much voltage does the A.C. Generator produce?
About 0.5V peak to peak, with the magnitude rising and falling with the speed at which it is turned.
Why is the output not a pure sine wave?
The geometry of the magnet and coil mechanism shapes the waveform. Storing the trace on a PC oscilloscope lets students study that shape closely.
What do I need to display the output?
A centre-zero moving coil voltmeter or an oscilloscope, connected through the two 4mm sockets. Meters and leads are ordered separately.
Does it need batteries or mains power?
No. It is turned by hand, and the rotating magnet generates the output.
Can students see how it works?
Yes. The body is transparent, so the magnet, coil and direct drive are all visible.
What warranty applies?
Warranty terms are confirmed with each quotation; please contact us for details.
Can we buy a set for every lab bench?
Yes. Send the number of units and your delivery location and we will quote for supply within India or to international markets.
Request a Quote
For a price on the A.C. Generator, get in touch with our sales team, or collect it in the enquiry cart with the meters and leads you plan to use.
Last updated: 24 September 2026
