| Electronics > Beginners |
| DIY power supply |
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| MarkF:
Looks good. :clap: Two questions: 1) Are the two yellow posts the temperature probe inputs? 2) On the power switch, I believe it's backwards? The'O' is the OFF position and the '|' is the ON position. Edit: Third question: 3) Can you tell me what the power supply model is? |
| Pirateguy:
ehhh not anymore since i removed the sticker and painted it. :P but i did google the model number before and couldn't find anything. in any case no 3.3v or sense, but also no power on line, and only a power good indication line. it is running without the resistor OR having to short anything at all. all it needs is for power to be applied to the input and it runs. the yellow posts are the negative outputs. the temp meter is internal only for now. i think ill add the external temp later, but it will have it's own display. the power switch is ST; it only has 2 terminals. i guess i have it mounted upside down :P |
| MarkF:
I believe you have an older AT Power Supply and NOT an ATX Power Supply |
| Pirateguy:
now that you mention it, lol yeah i guess you're right. :P that pinout is an exact match. |
| Pirateguy:
and now it's f#$cked. when i turn it on the fan starts blowing like mad, and the -12v polyswitch pops. checked out all my handiwork, no problems there. and even with everything disconnected it still does it. ill check for shorts on the board later, but i'm pretty sure i can mark this down to the old psu's decrepitude. hell, an AT psu... this thing must be from the P1/2 era... i didn't recognize it, cuz i didn't remember them, lol. anyway on to option 2: using 2 sources like the HP one for fixed and variable, the breakout board i have for the 3.3 and 5v, and a 7812 for 12v. which has me back with my original problem: the housing... |
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