Hitachi RAS-25QH1 Technische Information Seite 127

4. Auto Sweep Motor Circuit
Auto sweep motor for
Micro: computer
be See Se a
Fig. 4-1 Auto Sweep Motor Circuit (Horizontal air deflectors)
@ Fig.4-1 shows the Auto sweep motor drive circuit; the signals shown in Fig.4-2 are output from pins :
of the micro computer.
Horizontal air
deflectors: 10ms.
Horizontal air deflectors | 1 ' 2 ' 3 ' 4 ' 5 | 6! 71 8
1 i U 5 1 1 |
Micro computer pins Step 'width
Fig. 4-2 Micro computer Output Signals
@ As the micro computer's outputs change as shown in Fig.4-2, the core of the auto sweep motor is excited
to turn the rotor. Table 4-1 shows the rotation angle of horizontal air deflectors.
Table 4-1 Auto sweep Motor Rotation
Rotaiton angle per step (° ) Time per step (ms.)
® The Auto sweep motor (sub) drive circuit operates in the same way.
Horizontal air deflectors
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