Honda CX500 1978 Shop Manual page 241

HONDA
CXSOO
TECHNICAL FEATURES
C.D.I. UNIT (CAPACITIVE DISCHARGE IGNITION)
LEFT LOW SPEED COlL
SECONDARY
SPEED COlL
\
IGNITION SWITCH
As the AC generator rotor turns, current is induced in the AC generator (AC generating coil). This current is rectified as it
passes through the diode D l and is stored in the condenser CL. During this process, the SCR, L is kept OFF.
An electric pulse is generated by the left fixed pulser when the pick up reaches the point where ignition must start.This is
due t o changes in the flux. The pulse is rectified by diode D2 and is applied t o SCR.
L
gate. As this happens, SCR, L turns
ON which in turn discharges the energy stored in the condenser through the primary coil. Sufficient potential is then
developed at the spark plug t o ignite the air-fuel mixture in the combustion chamber.
Same sequence of events takes place for the right cylinder 280 degrees after ignition takes place in the left cylinder, in
relation t o the crankshaft rotation.
Date of Issue: January,
1981
o
HoNDA MOTOR
CO., LTD.
19-5