MTD 700 Series Professional Shop Manual page 118

FOR DISCOUNT PARTS CALL 606-678-9623 OR 606-561-4983
Series 700 Lawn Tractor
Half wave rectifiers
A half wave rectifier is a devise that blocks the bottom
or negative half of the AC signal. These rectifies send a
pulsed voltage signal to the system. See Figure 7.29.
Most half wave rectifiers are simply a diode placed on
the stator output.
Full wave bridge rectifiers
A full wave converts all of the AC voltage into DC volt-
age. A full wave bridge rectifier is composed of four diodes
connect to form a bridge circuit.
When the AC voltage coming from the stator is posi-
tive, it passes through diode #2 and goes out into the sys-
tem. It returns from the ground and passes through diode
#3 to get to the stator. See Figure 7.30.
When the AC voltage coming from the stator is nega-
tive, it passes through diode #4 and goes out into the sys-
tem. It returns from the ground and passes through diode
#1 to get to the stator.
112
www.mymowerparts.com
Figure 7.29
2
1
3
4
2
1
3
4
Figure 7.30