Product description
Color: Bluex5pcs Size: 13.5X10cmx5pcs
Miniature wind hydraulic: the outer casing is made of plastic, which can intuitively understand the principle structure of gear transmission.
DIY model generator: simply turn the handle to be used. the faster you turn the handle, the more power you generate.
Miniature wind hydraulic: the outer casing is made of plastic, which can intuitively understand the principle structure of gear transmission.
DIY model generator: simply turn the handle to be used. the faster you turn the handle, the more power you generate.
Manual crank generator: mainly used in the physical experiment of middle and elementary . great instrument for learning physical experiments.
Core Functionality: Hand Crank Generator enables students to manually generate electricity by turning the crank, effectively illuminating a bulb which helps demonstrate the principles of electricity generation and gear transmission for hands-on physics learning
Transparent Design: the outer casing is crafted from clear material, allowing users to visually understand the internal gear transmission mechanism, enhancing comprehension of mechanical energy conversion in physics experiments
Durable Material: Made with high strength and good toughness components, the generator is resistant to breaking during repeated classroom use, making it suitable for student physics teaching and experimental activities
Educational: Ideal as a for children and students interested in physics, this hand crank electricity generator encourages interactive learning through building science experiments, fostering creativity and problem-solving skills
Compact Size and Portability: Measuring approximately 5.27 x 1 x 5.27 inches and weighing about 1.08 pounds, this handheld crank generator is easy to carry and use in various educational settings or science demonstrations
Shannon Heath –
Perfect!
I bought these for my elementary class to do an electricity experiment. They were perfect! Students were able to use them easily and they worked like a charm.
Greg P. –
Disappointing at first, but adaptable.
I received this item through the Amazon Vine program in exchange for an honest review.I ordered these mini generators because I am a former science teacher, and still like to teach individuals. I had some generators like these and was excited to get my hands on a set of five.Positive: These do demonstrate the conversion of mechanical energy to electricity. When you turn the crank, the light bulb lights. The gears seem to be fairly sturdy, however the instructions are entirely in Chinese. Fortunately a translation program let me see a caution that one should not exceed about two revolutions per second.Positive: There are positive and negative terminals and wires with fork endings which allow one to connect the mini generator to something else. For example, when I connected a 3 volt battery to the terminals, the light came on and the crank rotated. However, with the light stealing energy, one can’t send much power to the terminals by cranking.Negative: The light is hard-soldered in place, with no switch. One very important demonstration is to connect two generators to each other. If you turn the crank of one, the crank of the other should turn. The problem is that the filament bulbs, since they are always connected, absorb most of the energy, and the second crank does not turn as much as it should.Solution: The mini generators can be easily disassembled with just five small phillips screws. The light can be clipped out, and everything reassembled. I did this with two of the mini generators, hooked them together, turned one, and the other responded by turning. Not as much, since some energy is always wasted in conversion and transmission. In addition, the generator can then be used to power other items via the terminals.
kluj –
Oof.
Manufacturing quality on these is zero. Parts are different between units and most parts are significantly corroded (varies quite a bit unit-to-unit). The crank is attached with a wood screw forced into plastic. No unit feels the same; I’m pretty sure the alternator in one either had the coils come loose or someone put some tiny rocks in it. Bulb fell right out in two of the three I tested, and the bulb socket is not really held in place; it bounces around, with only the bulb’s bulge keeping the socket from falling into the crank. The power out is very inconsistent, but you can power an external LED in flashes, or a tiny DC motor; you won’t be getting a USB battery bank to recognize charge. I’d feel leery about letting kids use these (and to be honest, I’m suspicious of whether or not adults assembled them).