| Electronics > Repair |
| Help identifying this part - 1178H |
| (1/5) > >> |
| daisizhou:
Hallo everyone I don't know what model this patch represents, I saw the mark is "1178H"。 If you know please tell me, thanks |
| fzabkar:
Can you provide some context? What are the surrounding components? Is the "8" likely to be a year code? Can you identify the Vcc and Ground pins? |
| daisizhou:
--- Quote from: fzabkar on September 06, 2024, 07:54:15 pm ---Can you provide some context? What are the surrounding components? Is the "8" likely to be a year code? Can you identify the Vcc and Ground pins? --- End quote --- The middle is connected to VCC and GND, and the other pins are connected to the inductor. Please see the figure below. Looks like a DC/DC control chip. |
| fzabkar:
The IC appears to be driving 4 inductors, but there are no feedback pins. :-? |
| daisizhou:
--- Quote from: fzabkar on September 06, 2024, 09:51:31 pm ---The IC appears to be driving 4 inductors, but there are no feedback pins. :-? --- End quote --- It looks like the 4 inductors connected to it are connected to the output jack Each of these chips is always connected to 6 inductors, see the figure below. |
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