[
T.
C.
I.
(Transistor Control Ignition) magneto]
1
)
Features
The T.C.I. magneto completely solves the prob-
lems with the conventional point type magneto,
that
is,
stains, burns, rusting during long storage,
ignition timing deviation due to mechanical wear,
etc.
2)
Construction
The components
of
the magneto assembly are as
shown in Fig.
3B.
The main parts
of
the magneto
are explained.
Flywheel Complete
T.C.I.
Unit
./
Generating Assembly
~
Fig.
3B
FLYWHEEL COMPLETE
The FLYWHEEL COMPLETE has perma-
nent- magnets
so
that the rotation of these
magnets generates an AC electromotive force
in the primary coil
of
the generating assem-
bly.
GENERATING ASSEMBLY
The GENERATING ASSEMBLY consists
of
the primary coil and secondary coil. The ro-
tation
of
the FLYWHEEL COMPLETE gen-
erates a voltage in the primary coil and feeds
a current. At the same time a high voltage
is
induced in the secondary coil. This high volt-
age causes the spark plug
to
spark.
T.C.I. UNIT
The T.C.I.
UNIT
consists maily
of
an SCR
and
other semi-conductor parts. It senses the
primary current waveform generated in the
GENERATING ASSEMBLY,
and
switches
the transistor
to
cut
off
the primary coil cur-
rent.
This abrupt current change causes a high volt-
age to be induced in the secondary coil.
3)
Wiring diagram
r
Prim
r
Wir
Spark
-
T.C.I.
Unit
Plug
*
Assembly
Fig.
3C
-7-
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