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Ricoh R3111x Series Manual de usuario Pagina 22

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R3114x
22
TECHNICAL NOTES
When R3114xxx1A/C is used in Figure X, if the value of R1 is set excessively large, the dropdown voltage
caused by the consumption current of IC itself, may vary the detector threshold and the release voltage. Also, if
the value of R1 is set excessively large, there may be delay in start-up and may cause oscillation generated by
cross conduction current.
When R3114xxx1A/C is used in Figure Y, if the value of R1 is set excessively large, the dropdown voltage
caused by the consumption current of IC itself, may vary the detecor threshold and the released voltage. Also, if
the value of R1 and R2 is set excessively large, there may be delay in start-up and may cause oscillation
generated by cross conduction current.
When R3114xxx1A/C is used in Figure Z, if the value of R1 is set excessively large, the dropdown voltage
caused by the consumption current of IC itself may vary the detector threshold and the release voltage. Also, if
the value of R1 is set excessively large, there may be delay in start-up and may cause oscillation generated by
cross conduction current. Furthermore, if the value of R1 is set large and the value of R2 is set small, released
voltage level may shift and the minimum operating voltage may differ. If the value of R2 is set excessively small
from R1, release may not occur and may cause oscillation.
GND
V
DD
R3114x
Series
OUT
R2
R3114x
Series
OUT
GND GND
V
DD
R3114x
Series
OUT
R2
R1
V
DD
R1
V
DD
R1
V
DD
Figure X Figure Y Figure Z
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