Mobile power supply is a portable charger that combines both power supply and charging functions. It offers numerous benefits, making it a useful tool for daily life. For instance, when you're on the go, you can charge your mobile phone without needing to plug it into an outlet. Additionally, it allows you to power various electronic devices such as smartphones, PDAs, digital cameras, and more. So, how can you build your own mobile power supply? This article provides a detailed step-by-step illustration tutorial.
Modern society has entered the mobile era, with handheld devices like smartphones, tablets, and laptops becoming common in households. These devices are convenient to carry but often suffer from short battery life. Building your own mobile power supply allows you to recharge your devices anytime and anywhere, ensuring you never run out of power.
Materials needed:
- NPN transistor
- L7805CV Zener diode
- Capacitor 50V 10µF and 50V 4.7µF
- Ceramic capacitor 104pF
- Wires
- Hot melt adhesive
- Diodes 4004 and 4148
- Battery case
- USB female port
- Advertising card (housing)
- Switch
Production steps:
Start by attaching the USB port to the case. Then, proceed with the positive connection. Next, install the voltage regulator board, which outputs 5V. A circuit diagram is essential to guide the wiring. You’ll need one inductor, two diodes, one transistor, and one capacitor. Assemble a Joule thief, which helps boost the voltage. Once everything is in place, test the setup. If the output isn’t 5V, double-check the connections. Ensure the polarity is correct when connecting to the battery. Perform a final test to confirm the device works properly.
Fix the regulator board inside the housing using hot melt glue. Place the Joule thief inside as well. Install the battery compartment, which should be a single-cell setup. Secure all components with hot melt adhesive. Connect the battery box to the Joule thief and perform another test. Finally, install the switch and connect it according to the diagram. Choose a casing shape that suits your preference—mine is triangular. After everything is assembled, conduct a final test to ensure the mobile power supply works as expected. With this DIY project, you now have a reliable power source for your devices on the go.
Steel poles are commonly used to carry several types of electric power lines, distribution lines and lighting system. Distribution lines carry power from local substations to customers. They generally carry voltages from 4.6 to 33kV for distances up to 30 miles, and include transformers to step the voltage down from the primary voltage to the lower secondary voltage used by the customer. A service drop carries this lower voltage to the customer's premises.
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