Forum: 702. Power Supplies
Wed 02 February 2011, 02:57
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Replies: 59
Views: 81,671
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Forum: 702. Power Supplies
Thu 19 August 2010, 04:23
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Replies: 59
Views: 81,671
Pablo,
Remember that a diode bridge will...
Pablo,
Remember that a diode bridge will waste about 1.4V (two diode "drops") and that many regulators require a 3V drop (minimum), so that means that the 5V line must start out with 5V + 3V +...
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Forum: 702. Power Supplies
Wed 18 August 2010, 07:49
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Replies: 59
Views: 81,671
Pablo,
80000 X 18A / 48VDC = 30,000 uF. I...
Pablo,
80000 X 18A / 48VDC = 30,000 uF. I doubt that you'll be pulling 18A, so 20,000uF might be adequate, if not, just add another 10,000uF capacitor in parallel with the other two.
Usually...
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Forum: 702. Power Supplies
Tue 01 June 2010, 23:09
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Replies: 59
Views: 81,671
Andrew,
Thanks for catching that error. I...
Andrew,
Thanks for catching that error. I had the decimal point in the wrong place.
A 7000 ohm 1W resistor would work and it would be within specs, but it would still be too hot to touch. A...
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Forum: 702. Power Supplies
Fri 30 April 2010, 18:00
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Replies: 59
Views: 81,671
Because you are running the motors with a...
Because you are running the motors with a parallel wiring connection, I'm assuming that you're going to drive the motors as hard as you can. You can START with the stock configuration, then, with an...
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Forum: 702. Power Supplies
Wed 07 October 2009, 09:06
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Replies: 59
Views: 81,671
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Forum: 702. Power Supplies
Mon 16 February 2009, 05:34
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Replies: 59
Views: 81,671
So far, I've never blown all four fuses going...
So far, I've never blown all four fuses going from the power supply to the Gecko stepper drivers, so I've never had to drain a capacitor manually.
Too many times new users keep asking the "what...
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Forum: 702. Power Supplies
Sun 15 February 2009, 08:06
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Replies: 59
Views: 81,671
1. The Gecko stepper drivers act like bleeder...
1. The Gecko stepper drivers act like bleeder resistors, i.e, the coils in the motors are connected to both + and - on the power supply, just like a bleeder resistor.
2. Yes.
3. You could add...
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Forum: 702. Power Supplies
Wed 14 January 2009, 12:28
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Replies: 59
Views: 81,671
Gerald is right. I should have said that the...
Gerald is right. I should have said that the lower case letter "m" WAS commonly used by capacitor manufacturers in the USA to represent "micro" back when we rebels (USA metric holdouts) were largely...
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Forum: 702. Power Supplies
Wed 14 January 2009, 08:44
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Replies: 59
Views: 81,671
You PROBABLY have a 1,600uF 400V capacitor. It...
You PROBABLY have a 1,600uF 400V capacitor. It was common practice several years ago to use either uF or mF to mean 0.000001 farad. The lowercase letter "m" is used for micro. The uppercase letter...
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Forum: 702. Power Supplies
Fri 28 November 2008, 05:57
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Replies: 59
Views: 81,671
Copied from another thread:
. . . . . . a...
Copied from another thread:
. . . . . . a suitable capacitor; however, finding adequately sized capacitors with screw terminals is becoming more and more difficult, since most designers have...
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Forum: 702. Power Supplies
Tue 05 February 2008, 12:11
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Replies: 59
Views: 81,671
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