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IO.
ROBIN
SOLID
STATE
IGNITION ENGINE
10-1
FEATURES
Model
EY
15V
can employ as option a pointless igniton system, called Solid State Ignition, which is the cir-
cuit breaker type ignition device, utilizing the power transistor as an element for controling electric current.
.This
system is outer coil type without pulser and is called T.I.C. (Transistor ignition circuit type).
To
the
EY20V
this T,I.C. is equipped as standard parts.
Being different from the breaker point type ignition system, this brand-new system is completely free from
such troubles as starting-up failure owing to dirty, burnt or oxidized point surface, lowering
of
igntion effi-
ciency being caused by moisture, rough surface
of
breaker point and incorrect timing resultant from worn
mechanical parts.
10-2
BASIC
THEORY
of
T.I.C.
(See
Fig.
52.)
1
T.I.C. (Transistor igntion type) consists of the fly-
wheel and ignition coil with built-in transistor; and
its basic theory
is
as follows:
1)
Revolution of the flywheel generates electricity
Resister
Ignition
Coil
on the primary side of the ignition coil, and the
.;
electric current
A
runs.
A
makes the power tran-
K
sistor
“ON”
and the electric current
B
passes.
2)
The flywheel goes round further, and at the time
5
of
ignition the electric current
C
runs, then the
.g
electric current
D
runs to the signal transistor,
cc
by which the electric current
B,
passing through
4d
m
0)
3
-
a
2
a
m
v)
v,
the power transistor, is abruptly cut; and as a
result, the high voltage electricity is generated
on the secondary side of the ignition coil and it
sparks at the plug.
Fig.
52
-
37
-