Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: guynamedbathgate on December 15, 2007, 10:54:47 AM
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Hello all.
Im getting into building my first power supply. Im pretty comfortable assembling electronic parts. but determining which ones I need is another story.
I need a little help selecting the capacitors I need for my project. I have a transformer that is more than adequit for my purposes. I bought an Antek torodal transformer and bridge rectifier from homeshopcnc.com but they no longer sell the transformers or the bridge rectifiers. any way the transformer is rated for 1000VA and has dual 45V output windings.
If you go to the Antek website. It is
http://www.toroid-transformer.com/
the transformer Item number is
AN-10445
now I am really only running two small nema 23 servo's and a RS23-370 oz stepper off this huge supply. so Im not really sure what size capacitor to use to build the supply.
any help would be appreciated.
also a source to purchase them would be helpful as well.
Thanks
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Oh Im using Geckos to drive them if that helps.
and the servo's are have a terminal voltage of 60 volts
I got them from homeshopcnc as well.
Chris
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Whats the current ratings of your motors?
Hood
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the servos say 3.5 A continuous current and 20 A peak current and the stepper will be wired in parralel which calls for 5 Amps.
Hope thats what you need
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You probably are looking at a minimum of 12,000uF, but more would do no harm.
Hood
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would one of these work.
http://cgi.ebay.com/Two-Cornell-USA-33-000mF-75VDC-Electrolytic-Capacitors_W0QQitemZ330197178769QQihZ014QQcategoryZ111603QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
there a bit more than 12000 uF
Chris
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Oh wait there rated at 33000 mF not uF
is there a difference Im assuming there is.( sorry, dont know much about capacitors)
Chris
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They are uF if you look on the Capacitors themselves you will see it, the guy has said they are micro Farads in the description but has said mF in the title which means milli Farrad which is wrong. They would be very nice capacitors if they were mF ;)
Anyway, yes they should do nicely.
Hood
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Hello all.
Im getting into building my first power supply. Im pretty comfortable assembling electronic parts. but determining which ones I need is another story.
I need a little help selecting the capacitors I need for my project. I have a transformer that is more than adequit for my purposes. I bought an Antek torodal transformer and bridge rectifier from homeshopcnc.com but they no longer sell the transformers or the bridge rectifiers. any way the transformer is rated for 1000VA and has dual 45V output windings.
If you go to the Antek website. It is
http://www.toroid-transformer.com/
the transformer Item number is
AN-10445
now I am really only running two small nema 23 servo's and a RS23-370 oz stepper off this huge supply. so Im not really sure what size capacitor to use to build the supply.
any help would be appreciated.
also a source to purchase them would be helpful as well.
Thanks
Hello!
I'm sure this will help you out, as the following link properly guides me in making a perfect power supply!
http://campbelldesigns.net/how-to-build-a-power-supply.php
Read everything especially the PDF File, I'ts very helpful!
Good Luck!!!!