EY15V, EY20V - Small Engine Discount

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 circuit
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 efficiency
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 flywheel
and ignition coil with built-in transistor; and
its basic theory is as follows:
1) Revolution of the flywheel generates electricity
4d
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
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.g
electric current D runs to the signal transistor, cc
by which the electric current B, passing through
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.
Resister
Ignition Coil
m 0)
3
Fig. 52
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a
2
a
m
v,
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