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◆ An old yet new engine The Stirling engine was invented in 1816 by Scottish pastor Robert Stirling. It has recently gained significant attention again. ◆ An engine with great potential for future space utilization Research aimed at space utilization is being conducted at JAXA and NASA. ◆ A high-efficiency free piston engine that directly utilizes the linear motion of pistons *This kit can operate using hot water as an energy source. ◆ An eco-friendly (low-pollution) engine that can utilize solar heat and waste heat It operates through the expansion and contraction of gas due to temperature differences and can accommodate various heat sources. ◆ Simple structure Easy to assemble. An engine kit with principles of operation that are easy to understand.
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Free membership registrationThe electricity generated is direct current, with a maximum output of approximately 12V. Since it produces direct current, it can be used in various ways as a substitute for batteries. It is useful for lighting small bulbs, operating motors, and for experiential learning about electricity. The polarity changes depending on the direction in which the handle is turned. Turning the handle to the right makes the red clip of the alligator clip positive (+) and the black clip negative (−). Turning it in the opposite direction reverses the polarity. It can also light a 100V bulb. By connecting multiple hand-cranked generators in series, the voltage increases. For example, connecting five in series can yield over 50V, allowing a 100V bulb to be lit. The grip and handle are designed to be easy for children's hands to hold. The handle can be folded for compact storage. Size: 115×41×112mm, Weight: 145g. Cord: 1m, with large red and black alligator clips.
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Free membership registrationCalm black design Due to the different operating voltage from other standalone solar modules, only the SolarAmp (SA-MPPT-15L) charge controller is compatible. By combining with SolarAmp, it is easy to set up systems ranging from 70W to 160W for 12V systems and 70W to 400W for 24V systems.
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Free membership registrationThe solar cell modules from K.I.S. that meet these quality standards not only ensure safety but also demonstrate excellent performance in stability, durability, and weather resistance over the long term. With the adoption of crystalline silicon for high efficiency, they have a proven track record in public and industrial applications such as traffic signs, emergency phones, radio stations, irrigation systems, outdoor lighting, and outdoor clocks. They come in a wide variety to suit different applications, from small systems to independent distributed and grid-connected systems. The modules feature reinforced glass and corrosion-resistant aluminum frames. The marine models (BT432S-MRN, BT832-MRN) use a highly weather-resistant transparent PVF (polyvinyl fluoride) film for the front cover and a rubber frame to prevent damage to yachts and boats. They are not only suitable for marine applications but are also gentle on car bodies and people, with a thin, lightweight design that makes them easy to handle.
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Free membership registrationMysterious beads that change from white to colorful colors under ultraviolet light. The whitish beads quickly transform into vibrant colors when exposed to sunlight, and they return to their original state when placed in a dark area. They can be used as beads for accessories such as bracelets, necklaces, and mobile phone straps. They also serve as a UV checker for sunburn prevention and UV protection.
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Free membership registrationIt is optimal for regions with concerns about bad weather and short sunlight hours, with the world's smallest class of self-consumption current. It also comes equipped with a recovery charging function for over-discharged batteries!
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Free membership registrationSolar showers that use solar heat to warm water are back in stock! They are useful for showering and handwashing at the beach, camping, and outdoor activities, as well as for washing dishes. They can also serve as emergency water tanks during disasters and emergencies.
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