Suzuki FA50 Service Manual page 17

l.E\'ER.tl. /.'\FORM ff/O \
1-14
Connecting Diagram
P E I
unit
Wiring Circuit
B/R
R/B
Condenser
charging coil
i.
Description
As the magneto turns, the voltage generated by the condenser charging coi l is charged
to the condenser through the following ci rcu it:
Diode D3
Condenser charging coil
-+ -+
Condenser charging coi l .
2. When the rotor turns
and the generated voltage, which
When this voltage arrives at the SC R gate, it makes SC R conduct (tu rned on ) .
3 .
When S C R closes the circuit, the electrical charge stored i n the condenser i s rapidly discharged
through the following ci rcuit:
Condenser C-+ SCR
4. I n this way, a high surge of voltage q u i c k l y bui lds up in the secondary winding, thus
causing a good spark to jump across the spark plug gap.
NOTE:
In case o PEI, two sparks
f
TDC
at approximately
Rt'
PEI Unit
Diode D1 Condenser C
-+ -+
is
the polarity of the red/black terminal becomes positive (+)
1 80°,
divided by R1, is applied through R 2 to the S C R gate.
Ignition coil primary winding-+ Condenser
__,.
each crankshaft rotation
occur
and BOC.
Engine kill switch
Magneto
Ignition coil Spark plug
SCR
Ignition coil
Ignition coil primary winding
-+
C.
l"' " '
"
Spark