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UC1844A / Off-Line Flyback Regulator

Guru 29490 points
Other Parts Discussed in Thread: UC1844A, UC1845A, UC2845A

Hi Team,

I would like to ask 2 questions about "Off-Line Flyback Regulator" in datasheet page.8.

1)
Is it possible to operate if 9.5V DC is supplied instead of 117V AC?
My customer also assumes +12V is loaded from the following point (between D2 and D3).

2)
If the answer of 1) is yes, how should I decide the value of R2?



Your support would be appreciated.

Best Regards,
Yaita / Japan disty