LM3915 | 10 LED Sound Level Display | Power Amplifier VU Meter скачать в хорошем качестве

LM3915 | 10 LED Sound Level Display | Power Amplifier VU Meter

Creating a 10-LED sound level display (or VU meter) using the LM3915 IC can be a fun DIY project. Many enthusiasts prefer using a PCB (Printed Circuit Board) kit for better structure and reliability. Here’s a comprehensive guide on obtaining and building a DIY LM3915 VU Meter kit: What is the LM3915 VU Meter? The LM3915 is an integrated circuit designed to drive LED displays to indicate signal levels visually. It is ideal for audio applications, making it perfect for a VU meter. The meter can either operate in bar graph mode or dot mode, depending on your configuration. Building the LM3915 VU Meter Assembly Steps 1. **Prepare the PCB**: Start by inspecting the PCB for any defects or damage. Identify the components and their positions based on the silkscreen printing on the board. 2. **Soldering Components**: **Install the LM3915**: Place the IC in its designated spot. **Add Resistors and Capacitors**: Follow the schematic provided in the kit. Make sure to observe the correct polarity for polarized components (like electrolytic capacitors). **Connect LEDs**: Orient LEDs correctly based on the longer leg (anode) and shorter leg (cathode). Solder them onto the board. 3. **Power Supply Connections**: Connect the power supply as indicated in the schematic. Make sure to observe correct voltage ratings. If an adjustment potentiometer is included, install it at the input section as indicated. 4. **Input Connection**: Optionally, include a jack for connecting the audio signal (like a stereo input jack). You can add a capacitor to filter DC offset from the audio source. 5. **Testing and Calibration**: Once assembled, connect the power supply and use a multimeter to check for proper voltages at the IC pins. Connect an audio source and observe the LED response. Adjust components as needed for sensitivity. Upgrades and Modifications **Change LED Colors**: You can use different colored LEDs for visual effectiveness. **Adjust Sensitivity**: Change resistor values or add a potentiometer to vary sensitivity to audio levels. **Housing**: Consider creating or buying an enclosure to protect the PCB and components. A DIY LM3915 10 LED sound level display kit offers a rewarding project that enhances your understanding of electronics while providing a functional audio visualizer. if you want to know how to connect the components and testing Watch This video! --You can see all my videos here!:    / @electrotechnics-g4s   Thank You very much, for supporting my channel and for watching my videos. Your feedback will help this video reach more people, and encourage me to find more resources to produce high quality and new content for you. Please don't forget to like, share, and subscribed!