Doosan B20S-3, Specifications Systems Operation Testing & Adjusting, Page: 12 / 123

11 MicroController Control System System Operation
NAME DESCRIPTION
Continuity Having the ability to allow current flow.
Control Circuits The wires and components carrying low current used to signal the logic
unit, turn on main components, or support auxiliary circuits (indicated by
narrow lines on a schmatic).
Counter Electromotive An opposing voltage set up by a collapsing or increasing magnetic field Force
(CEMF) within a coil.
Current The movement or flow of electricity through a conductor. A circuit must be
complete for current to flow.
Current Limit The maximum allowable armature current of a stalled drive motor during
pulsing.
Deactivate To change from the activated condition back to the normal (deactivated)
condition. It can be caused by the application of force, the removal of
force,or the removal of electricity.
Digital Signal A signal in which the elements may be either of two distinct values.
For example high voltage, low voltage.
Diode A semiconductor device that allows current to flow in one direction, from
the anode to the cathode.
Display An electrical device that converts voltage inputs to a visual output.
Drain The terminal of a MOSFET through which flow the main current.
Electrical Braking Electrically trying to rotate the drive motor opposite to the direction of
truck movement.
Electromagnet A coil of wire, most often wound on an iron core, which produces a strong
magnetic field when current is sent through the coil.
Electromotive Force (EMF) The force that causes an electric current to flow in a circuit. This force is
measured in volts.
Field Windings The stationary coils that produce a magnetic field in motors and generators.
Filter An electrical device or component for restriction or suppression of
undesired voltage spikes.
Fuse A component in an electrical circuit that will open the circuit if too much
current goes through it.
Gate The terminal of a MOSFET through which control the main current.
Harness An assembly made of two or more wires that are held together.
Heat Sink A mounting frame used for semiconductor cooling.
Hour Meter An electrically activated device used to record the amount of usage a
truck receives.
Indicator LCD that gives an indication of some vehicle condition when it turns on or
flashes.
Input A voltage change at the incoming connection of a component.
Insulator A material that has a very large resistance so that it will not let current flow
through it.
LCD Liquid Crystal Display.