Forum Discussion
BenK
Aug 23, 2016Explorer
This is called hysteresis, or the rate the voltage will build (ramp up) and drop
off (fall ramp).
It takes voltage to build a magnetic field (flux field) and the higher the impedance
the longer it will take building up and fall off
Since poor trailer wiring will NOT deliver all the available voltage...it will
take more time
Since the brake magnets are highly inductive by nature, it will take even longer
to build the magnetic field (flux field). Ditto when the PWM cycles off/on and
will become the average factored by that hysteresis of building/collapsing flux
fields
Again, it depends on what kind of PWM. The really good ones ($$$) can modulate
the frequency along with amplitude. Lesser are set frequency and only modulate
amplitude and these can NOT deliver full voltage just by the nature of the
set frequency and the max available voltage
This is also where some confuse the PWM frequency with ABS...they are different
off (fall ramp).
It takes voltage to build a magnetic field (flux field) and the higher the impedance
the longer it will take building up and fall off
Since poor trailer wiring will NOT deliver all the available voltage...it will
take more time
Since the brake magnets are highly inductive by nature, it will take even longer
to build the magnetic field (flux field). Ditto when the PWM cycles off/on and
will become the average factored by that hysteresis of building/collapsing flux
fields
Again, it depends on what kind of PWM. The really good ones ($$$) can modulate
the frequency along with amplitude. Lesser are set frequency and only modulate
amplitude and these can NOT deliver full voltage just by the nature of the
set frequency and the max available voltage
This is also where some confuse the PWM frequency with ABS...they are different
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