Heater lamp turn-on pattern in 1 cycle (10 half waves)

1

2

3

4

5

6

7

8

9

10

AC wave

+

Variation

No.1 0 V

(Duty 100 %)

Zero

cross

 

Conductivity

point

On On On On On On On On On On

staus of Triac

 

(TRC1)

 

+

Variation

No.2 0 V

(Duty 80 %)

On On On On On On On On Off Off

+

Variation

No.3 0 V

(Duty 60 %)

On On Off On On Off On On Off Off

+

Variation

No.4 0 V

(Duty 40 %)

On Off Off On Off Off On On Off Off

+

Variation

No.5 0 V

(Duty 0 %)

Off

Off Off Off Off Off Off Off Off Off

Figure 4-3-6 heater lamp turn-on variations

FS-1010

4-24

Page 75
Image 75
Kyocera FS-1010 service manual heater lamp turn-on variations