Page 331 - 05. Subyek Teknik Mesin - Automobile Mechanical and Electrical Systems Automotive Technology Vehicle Maintenance and Repair (Vehicle Maintenance Repr Nv2) by Tom Denton

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Electrical systems 313

Figure 3.113 Mirrors

Change-over
relays

Control switch

Motor

Figure 3.114 Motor reverse circuit

the switch is moved the other way then the polarity of the other side of the motor
is changed. When at rest, both sides of the motor are at the same potential.
This has the effect of regenerative braking, so that when the motor stops it will
do so instantly. Further refi nements are used to enhance the operation of these
systems. Limit switching, position memory and force limitation are the most
common.
Adjustment of a seat is achieved by using a number of motors to allow positioning
of different parts of the seat. Movement is possible in the following ways:

front to rear
●
cushion height rear
●
cushion height front
●
backrest tilt
●
headrest height
●
lumbar support.
●