Lab power supply

thingiverse

Build Your Own Lab Bench Power Supply - A Step-by-Step Guide Are you tired of relying on commercial lab supplies that can be expensive and unreliable? Do you want to have complete control over the output of your power supply? Look no further! This DIY project for a lab bench power supply is designed to be easy to follow, even if you're new to electronics. With these instructions, you'll be able to build a high-quality power supply that meets all your needs. Materials Needed: * 12V DC power adapter * 9V battery holder * Voltage regulator (LM7805 or equivalent) * Current limiting resistor (1kΩ) * Diode bridge rectifier * Capacitor (1000uF, 35V) * Wire and connectors Tools Required: * Soldering iron * Pliers * Wire strippers * Multimeter Step 1: Prepare the Components Begin by preparing the components for assembly. Start by soldering the voltage regulator to a small PCB or breadboard. Next, attach the current limiting resistor to the regulator's output pin. Then, connect the diode bridge rectifier to the input of the regulator. Step 2: Assemble the Power Supply Once all the components are prepared, it's time to assemble the power supply. Start by attaching the capacitor to the output of the regulator. Next, connect the wire and connectors to the output of the capacitor. Finally, attach the 9V battery holder to the input of the regulator. Step 3: Test the Power Supply After assembling the power supply, it's time to test it out. Plug in the 12V DC power adapter and turn on the power supply. Use a multimeter to check the output voltage and current. If everything is working correctly, you should see a stable output of 5V DC. Tips and Variations: * To increase the output voltage, simply replace the LM7805 with a higher-voltage regulator. * To add more features, such as overvoltage protection or an adjustable output, consult the datasheet for your components and modify the circuit accordingly. Conclusion: With these instructions, you've successfully built a high-quality lab bench power supply that meets all your needs. Whether you're working on a project or simply need a reliable source of power, this DIY power supply is the perfect solution. So why wait? Get building today!