سخان الماء الشمسي كيف يعمل؟
سخان الماء الشمسي كيف يعمل؟
يمتص سخان الماء الشمسي حرارة الشمس باستخدام أنابيب خاصة، وينقلها إلى الماء المخزن في الخزان لتسخينه دون كهرباء.
🔋 Making a Lighter That Runs on Battery Instead of a Matchbox
🔋 Making a Lighter by Ahmad That Runs on Battery Instead of a Matchbox Ever thought about creating your own battery-powered lighter ? Let’s replace the traditional matchbox with a rechargeable solution! 📦 Materials Needed: AA Battery (or 18650 Li-ion battery for more power) Battery holder Metal wire (nichrome wire works best) Switch Electrical tape Small plastic or metal casing (like an old pen or casing) Soldering iron and wire ⚙️ Steps to Build: Prepare the casing : Use a small plastic tube (like an old pen or any sturdy small casing) to hold the battery. Wire the battery holder : Attach the battery to the holder and make sure it fits snugly. Attach nichrome wire : Cut a small piece of nichrome wire and fix it at one end of the casing. Add a switch : Solder the switch in the circuit to control when the nichrome wire heats up. Wire the nichrome wire to the battery : Make sure the wire will get heated when the circuit is closed by th...
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