Semiconductor; Series Circuit; Parallel Circuit; Diode - Honda Motorcycle Service Manual

ELECTRICAL FUNDAMENTALS
A series circuit is an electric circuit in which the current flows
through one device into another, and then to ground. There is
only one current path and the voltage is distributed by the
loads. The total resistance (0) can be found by simply adding
all the resistances, eg: R = R1
+
R2
Series Circuit
(SERIES CIRCUIT)
A parallel circuit is an electric circuit which has t w o current
paths, one for the positive and one for negative. The devices
are connected across the t w o paths. The voltage on each load
is the same, but the current branches out to each load. The
current flow to each load can be calculated as i l
=
E f r l ,
i2 = E
+
r2.
Parallel Circuit
The total current (1) is the sum of all current flowing to each
load.
(PARALLEL CIRCUIT)
h A n .
SEMICONDUCTOR
0
The electrical conductivity of semiconductors lies between
that of conductors and insulators. Before understanding how
they work in circuits, you need to have a basic knowlege
of
their characteristics.
Diode
The diode allows current to flow in only one direction. When
current is flowing, there is a slight voltage drop across the
diode.
DIODE
I
-
CURRENT FLOWS
(NORMAL DIRECTION)
4-
----CURRENT DOES NOT FLOW
(REVERSE DIRECTION)
Zener Diode
The Zener diode allows current to flow in one direction similar
to the diode above. When a certain reverse voltage is applied,
current abruptly flows in the reverse direction. When the
voltage is reduced below the reverse voltage, current flow in
the reverse direction stops.
ZENER DIODE
i
I
-
-
CURRENT FLOWS VOLTAGE
f
------
NO CURRENT FLOWS
BELOW REVERSE VOLTAGE
-CURRENT FLOWS
ABOVE REVERSE VOLTAGE
21-1 0
Date of Issue : March, 1995
0
HONDA MOTOR CO..LTD.