Hxcplayer said:
I just finished building my power supply and was checking the ground resistance.
Mike states on his blog that you need to have a ground reference close to 0.2 Ω and anything above 1 Ω is danger.
I'm getting a reading of 0.8 to 0.9 Ω. I'm not sure why it is that high. Is this an alright ground to start plugging in my 1176?
What can I do to decrease the resistance?
Hard to say, but there is a chance that resistance is from you meter probes. You could touch your probes together (not touching your build) and see what the resistance reading is in just the probes. Subtract that number from the number your getting when you measure the FET rack ground.
Hxcplayer said:
EDIT (NEW QUESTION):
I turned on my unit to test out the readings as stated in the build guide.
After about 5 sec from power up a quick tiny line of smoke passed by.
I didn't catch from which component it came from as I was a bit worried about the capacitor blowing up as mentioned in the guide.
That's not a cap failing. That would be huge event that would stink up your room.
Hxcplayer said:
I proceeded to do the readings of the -10V diode and +30V zener diode and they were reading correctly.
I then turned off the unit and tested the two 1k resistors. they were ranging around 900 and 950 ohms.
The 75 resistor was ranging properly at almost exactly 75 ohms.
Should I be worried even if everything is reading correctly?
I would also like to mention that when I first turned on the power supply, there was a small weird noise at the IEC that lasted like 3 sec before the smoke.
Thanks!
Readings were good, that's good.
You can't really test resistors on the board without considering what's around them. Those resistors are in series so they shouldn't be interacting with one another however there may be other considerations like the caps and diodes around them. If you're worried about those resistors you can de-solder and lift one leg and then measure. I suspect they'll read fine.
Make sure your voltage select switch is set correctly.
Not sure about the smoke but it sounds like you're working ok. I little high pitched noise on power-up is normal if I recall correctly. Probably the power transformer. If you had anything really wrong the fuse would blow.
Mike