Charging system and control circuit fundamentals Flashcards
what components carry current flow that is required to create a magnetic field in the rotor field coil
slips and brushes
heat must be directed away from the alternator using these 3 components
heat sinks
oil
cooling fans
why are pole and field windings made of soft iron
permeability
heat producing eddy currents are reduced by doing what
laminating iron plates
when only half an AC wave is utilized through rectification it is known as
half wave rectification
the purpose of a power cap between the output and ground is
protection from transient voltage spikes
the two types of stator windings are called
y type and delta
what is the purpose of y type winding
they are connected in series to produce higher voltage
how are delta type windings connected
connected in parallel
if the regulator controls the current flowbefore it passes through the rotor windings its called
A circuit
if the regulator controls the current flow after it passes through the rotor windings its called
B circuit
max output of an alternator is limited by
inductive reactance
what provides rectified current to energize the alternators field coil
diode trio
what two terminals will provide one half system voltage from the stator that has not been rectified
R and STA terminals
the electrical current required to create the magnetic field in the rotor is supplied to the field conductors through
brushes and slip rings
purpose of charging system is
charge battery and start unit
charging system converts what energy
mechanical to electrical
charging systems use
dc alternators
semiconductor tech for voltage reg
diodes
alternators have these three characters
high voltage at low speeds can be operated at high speed low current flow through brushes create current in either direction light weight per amp of output
fully charged 24 volt system voltage
25.2
max charge voltage on a 12v system
14.8
two major circuits
output and field circuits
alternator induces current by rotating a _____inside a fixed conductor
magnetic field
constant change in voltage as the magnetic field is rotated creates what voltage
sine wave voltage
