BLDC (Brushless Direct Current) is meant to use electronics to product
rotating magnet, which electronic rings stably stand on a point to move quite
powerful electronic current, and without coal brush structure, the only thing
which can wears out is rocking bead shaft; therefore, BLDC can form very big
power and high-speed swirling, which longevity is decided from the rocking bead
shaft. BLDC is the best way of carry-on motivated power that its outer
multi-sink with much polars rotates non-brush engine (magnet swirling out of
electronic strings) can product much more squirrel strength, so it's a future tendency
to replace the inner-burnt engine by firing petroleum fuel. Using BLDC can’t
make air pollution and greenhouse gases. The noise and shake it makes is a
little; with its advantage that is small size and light quantity, it can apply
to be a weeder worked on the park without pollution and low noise. Besides, the
petro-fuel is getting expensive compared with the cheaper electricity and the
use of multi-made up battery, so BLDC also has the economic advantage. The BLDC
weeder is the best choice to protect our earth.