g*****g
发帖数: 3623 | 1 attached is the circuit in the P14 of the datasheet from LM5025, national
semi.
you can find it at www.national.com LM5025 datasheet.
my stupid questions are:
1. what is function for U3A, R31, R32,C31? just for adding an extra pole at
2*Pi*R31*C32? or other functions else?
2. why + of U3A need to be connected to reference 1.2V? can I put it to
second GND?
3.why the output of U3A is positive??
thanks for your help |
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