i stant
8). It is the most liable place where microwave leakage occurs. Especially, after a long time
the microwave
leakage
enlarge at the hinge and the hook.
mechanic damage
cause
amount of
microwave leakage.
the main methods designed for preventing microwave leakage of the door
as
follows:
Assemble a layer of
filament or a thin metal piąte with many holes at the middle of the window to
it
is possible to
the heating as
as shielding the microwave.
2) The widely used
measurement at present
is to assemble a current - resistant construct
the door and the
is
the typical construction fig of the door. It was
designed according to the theory of
LENGTH IMPEDANCE
Although
there is no connecting point
a mechanical
point. It is sealed at the
from the point of
so it is called
Recently, with the installation of noise filter in the
current resistant trough, the
to restrain the
microwave leakage (include high subharmonic)
2-9
have been much
front door piąte
noise filter
oven door
3 TYPICAL CIRCUIT ANALYASIS OF
OVEN
We have introduced the structure and the working principle of the microwave oven previously. We
analyze
the complete set circuit of the microwave oven
with the practical circuit at this chapter.
SCHEMATIC DIAGRA
\s
not
4-1
is the practical circuit diagram of a brand microwave oven.
corresponding working conditions
as
follows: The door closed, SW1 and SW2 turned on, SW3 closed, power control
has no power,
R2 is cut
8
