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  • Dimming Power LEDs Using a SEPIC Converter and MCP1631 PIC Attach PWM Controller (.pdf)
    Programmable Current Source Reference Design. A Microchip MCP1631 PWM controller and a low-cost PIC16F616 microcontroller are used to manage a SEPIC (Single Ended Primary Inductive Converter) powertrain. The SEPIC topology is then used to drive and dim Light Emitting Diodes (LEDs).
  • Hubble Rules Out a Leading Explanation for Dark Matter
    Two teams of astronomers, working independently with NASA's Hubble Space Telescope (HST), have ruled out the possibility that red dwarf stars constitute the invisible matter, called dark matter, believed to account for more than 90 percent of the mass of the universe. Until now, the dim, small
  • Using a PIC (R) Microcontroller for DMX512 Communication
    AN1076 (R) Using a PIC Microcontroller for DMX512 Communication place of auto-transformers, becoming quite popular, Author: Parthiv Pandya particularly the 0-10V analog consoles. Still, this Microchip Technology Inc. system had three major drawbacks: 1. It was prone to noise. 2. Dimming could

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