Mazda 626 MX-6 1989, Wiring Diagram

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HOW TO READ ELECTRIC PARTS
TRANSISTOR
There are two types of transistor function:
(1) S w itchin g Acting a switch
(2) Amplification action .... Amplifying a small signal to a
big signal
Transistors are classified according to polarity (structure):
NPN and PNP
Generally, the NPN are widely used.
Transistor has three terminals; Emitter (E). Collector (C), and
Base (B).
To operate the transistor, make a base current flow to the
arrow direction (B to E). Then the resistance between the
collector and the emitter becomes extremely small, and large
current flows from the collector to the emitter (In the case of
PNP transistor, electric current flows to th emitter to the
Electrodes indication collector).
it
E /'c?
Collector indication mark
E C B
NPN
B o ------
Name of Models
828
- Revision Mark
(Starts from A)
- Resistration Number
Polarity and Usage
A ... PNP, for high frequency
B ... PNP, for low frequency
C ... NPN, for high frequency
D ... NPN, for low frequency
Semiconductor element
-Num ber of terminals
A simply way of checking
PNP and NPN transistor can be symplified shown in dia­
grams on the left-hand side
Set x 10011 or 1 k ll resistance measurement range in the
circuit tester, and touch leads to each electrode to check
conductivity.
> Current Flow
only C to B
► Current Flow
only B to C
• Current Flow
only E to B
• Current Flow
only B to E