Read Sharp R-23AM Service Manual online
R-23AM
5
NOTE: The ON/OFF time ratio does not exactly corre-
spond to the percentage of microwave power,
because approx. 3 seconds are needed for heat-
ing up the magnetron filament.
because approx. 3 seconds are needed for heat-
ing up the magnetron filament.
TWO MAGNETRON OPERATION SYSTEM
Two magnetrons MG1+MG2 are equipped in order to get
higher microwave power output. The primary windings of
the high voltage transformers T1+T2 are connected so
that each magnetron can be oscillated alternatively ac-
cording to the frequency of the power supply. Refer to the
Figure B-1 and B-2.
higher microwave power output. The primary windings of
the high voltage transformers T1+T2 are connected so
that each magnetron can be oscillated alternatively ac-
cording to the frequency of the power supply. Refer to the
Figure B-1 and B-2.
Figure B-1. High Voltage Circuit
Figure B-2. Operation of Magnetron
T1: HIGH VOLTAGE
TRANSFORMER
TRANSFORMER
H. V. RECTIFIER
C1: H.V. CAPACITOR
MG1: MAGNETRON (UPPER)
(REAR)
H. V. RECTIFIER
H. V. FUSE
H. V. FUSE
C2: H.V. CAPACITOR
MG2: MAGNETRON (LOWER)
T2: HIGH VOLTAGE
TRANSFORMER
TRANSFORMER
(FRONT)
COMMERCIAL
FREQUENCY
(50HZ)
FREQUENCY
(50HZ)
POWER OUTPUT
BY MAGNETRON T1
BY MAGNETRON T1
POWER OUTPUT
BY MAGNETRON T2
BY MAGNETRON T2
OPERATION OF
MAGNETRON
MAGNETRON
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