The thesis addresses the dimming of modern light sources, particularly LED bulbs. Various
methods and technologies for adjusting light to user needs are explored. The behavior and
requirements of bulbs, including their drivers, are analyzed.
Two different types of dimmers are designed and constructed: a phase dimmer, which enables
both leading-edge and trailing-edge dimming of various bulbs, and a PWM LED dimmer,
allowing flexible dimming of LED strips. The individual components of both dimmers are
thoroughly explained and programmatically simulated. Schematics and printed circuit boards
are created for both dimmers. A program with a user-friendly interface for testing purposes is
developed.
Measurements of output signals using an oscilloscope are conducted to verify the dimmers'
performance under real-world conditions, along with thermal measurements to assess their
thermal capability.
|
