Demonstration Dynamo Model (Product Code: SLE/PHY/151) is a hand-driven dynamo on a base plate used to show how mechanical work is turned into electrical energy in school and college physics lessons. A 120 mm hand-drive pulley turns the smaller dynamo pulley through a rubber belt for a step-up ratio, and a lamp lights up to show the output. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
| Parameter | Detail |
|---|---|
| Construction | Same basic assembly as the Demonstration Electric Motor, mounted on a base plate |
| Base plate | 230 x 90 mm |
| Hand-drive pulley | 120 mm diameter |
| Drive | Rubber belt to the smaller dynamo pulley, giving a step-up ratio |
| Electrical output | Pair of 4 mm sockets |
| Output indicator | Lamp, provided |
| Motor use | Can also be run as a motor on a 6–8 V DC supply |
| Product code | SLE/PHY/151 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
The model turns an abstract idea — electromagnetic induction — into something a whole class can see. A student cranks the large pulley, the belt spins the dynamo much faster than the hand moves, and the lamp glows; cranking harder makes it brighter, which links rotation speed to the voltage generated. Teachers can also take the output from the 4 mm sockets to a meter so students record readings instead of judging lamp brightness.
The same unit works in reverse. Connect a 6–8 V DC supply and it runs as a motor, which makes a clear point that motors and generators are the same machine used in opposite directions. This two-way use makes it a practical demonstration model for the physics lab when teaching energy conversion, electromagnetic induction and power generation.
ScienceLab is the trading name of Jain Scientific Equipments Private Limited, the OEM (original equipment manufacturer) of the Demonstration Dynamo Model. The model is made at the company's own licensed factory at Saha, Ambala, Haryana, India, and sold factory-direct to schools, colleges, laboratory dealers and importers. Because the maker handles your order itself, questions about replacement belts, lamps or repeat orders come straight to the people who build the model. Learn more on our company profile.
These products support the same generator-and-motor lesson:
See more apparatus in our Physics Lab Equipment range.
What is included with the Demonstration Dynamo Model?
The Demonstration Dynamo Model comes on a 230 x 90 mm base plate carrying a 120 mm hand-drive pulley, a rubber belt to the smaller dynamo pulley, a pair of 4 mm output sockets and a lamp that acts as a simple output indicator.
Can the Demonstration Dynamo Model work as a motor?
Yes. The Demonstration Dynamo Model can be run as a motor on a 6–8 V DC supply instead of being turned by hand. This lets teachers show that a motor and a generator are the same machine, used to convert energy in opposite directions.
Why does the Demonstration Dynamo Model use a belt drive?
The Demonstration Dynamo Model uses a rubber belt from the large hand-drive pulley to the smaller dynamo pulley to give a step-up ratio. The dynamo therefore spins faster than the hand turns, so a comfortable cranking speed is enough to light the lamp.
How can students measure the output of the Demonstration Dynamo Model?
Students can measure the output of the Demonstration Dynamo Model by connecting a suitable meter to its pair of 4 mm sockets with standard leads. The built-in lamp gives a quick visual check, while the meter allows readings at different cranking speeds.
Who manufactures the Demonstration Dynamo Model?
The Demonstration Dynamo Model is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab) as the OEM, at its own factory at Saha, Ambala, Haryana, India. Orders, quotations and after-sales questions are handled directly by the manufacturer.
Can I get replacement belts or lamps for the Demonstration Dynamo Model?
Ask us. Share the product code SLE/PHY/151 and the part you need, such as a rubber belt or indicator lamp, through our contact page, and the manufacturer will confirm what can be supplied for your Demonstration Dynamo Model.
Can the Demonstration Dynamo Model be ordered in bulk or for export?
Yes. The Demonstration Dynamo Model is supplied in bulk to schools, colleges, dealers and institutions across India and international markets. State the quantity and delivery destination in your enquiry so the quotation can cover packing and dispatch.
Send the quantity and destination for the Demonstration Dynamo Model (SLE/PHY/151) through our contact page, or add it to the enquiry cart with any leads or power supplies you need. Your quotation comes directly from the manufacturer.
Last updated: 24 September 2026