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In the first years of the new millennium, in the development of
radio control technology with 2.4 GHz, a real revolution has taken
place. While the frequencies in the MHz range were standard over
many years in model construction, a large proportion of modern
communication technology and with it radio control (RC) has since
taken the band between 2.4 GHz and 2.48 GHz. Contents: Components
of a radio control - Properties of 2.4 GHz waves - Antennas -
Modulation and data transmission methods - User interface and
programming - Telemetry - Assembly and initial operation
In recent years, brushless DC motors and controllers have begun an
unparalleled triumph in model construction and in all technical
fields. This book is intended to show how a brushless motor works.
The basic principle is discussed first, before all the key terms
such as kV and rpm/V, operating voltage, load and idle current,
torque, turns, electrical and mechanical power, losses, efficiency,
etc. are explained. A brushless motor can't work without a
brushless controller, it requires a three-phase AC voltage. To
increase the speed properly, the controller must have information
on the rotor position. This can be done by Hall sensors or directly
via the motor windings. All that will be taken into account in the
book.
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