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Zero Dead Band Controllers Improve Responsiveness
Zero dead-band controllers eliminate the wasted trigger travel across a dead
band, improving brake and throttle response. When braking, the power
transistor is shut off and the brakes engaged the moment the brake contact
closes, even though the wiper button is still riding on a powered wiper band.
Conversely, the power transistor turns on faster under acceleration because
the wiper is always in contact with a power band...power is applied the instant
the brake contact opens.
Conventional electronic and resistor-based controllers rely on a dead band to
mechanically ensure that the wiper button no longer contacts a powered wiper
band before the mechanical brake contact closes. Otherwise, you'd have a
momentary short that would cause arcing of the brake and wiper contacts as
well as potentially damage the brake pots and power transistor.
Instead of a mechanical approach, zero dead-band controllers rely on the
electronic control of MOSFET brakes to eliminate the damaging shorting and
arcing.
In the Linear 200, the wiper voltage is constantly monitored by the brake control
circuit. When the voltage is pulled down to zero volts by the closure of the brake
contact, the power transistor is shut off and braking action begins. Conversely,
the moment the brake contact opens the wiper voltage jumps back up...braking
action halts and the power transistor is turned back on.
All of this happens in microseconds without any wasted trigger motion, one of
the reasons all Linear 200 controllers offer such incredible braking and throttle
response.
Zero dead-band controllers eliminate the wasted trigger travel across a dead
band, improving brake and throttle response. When braking, the power
transistor is shut off and the brakes engaged the moment the brake contact
closes, even though the wiper button is still riding on a powered wiper band.
Conversely, the power transistor turns on faster under acceleration because
the wiper is always in contact with a power band...power is applied the instant
the brake contact opens.
Conventional electronic and resistor-based controllers rely on a dead band to
mechanically ensure that the wiper button no longer contacts a powered wiper
band before the mechanical brake contact closes. Otherwise, you'd have a
momentary short that would cause arcing of the brake and wiper contacts as
well as potentially damage the brake pots and power transistor.
Instead of a mechanical approach, zero dead-band controllers rely on the
electronic control of MOSFET brakes to eliminate the damaging shorting and
arcing.
In the Linear 200, the wiper voltage is constantly monitored by the brake control
circuit. When the voltage is pulled down to zero volts by the closure of the brake
contact, the power transistor is shut off and braking action begins. Conversely,
the moment the brake contact opens the wiper voltage jumps back up...braking
action halts and the power transistor is turned back on.
All of this happens in microseconds without any wasted trigger motion, one of
the reasons all Linear 200 controllers offer such incredible braking and throttle
response.
Linear 200 zero dead-band wiper board eliminates
wasted trigger travel
wasted trigger travel
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