This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

UC1844A / Off-Line Flyback Regulator

Guru 29635 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.

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).

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