Full Bridge Singles...

hawkfeather · 7th February 2006, 01:58 PM

If I choose to use 4 Stealth diodes for a full bridge rectifier on my power supply, how many amps should they each be ideally rated for if my total peak requirement is 14-15A? I have 8, 15, and 50A pieces.

richie00boy · 7th February 2006, 02:19 PM

If your peak is 14-15A your RMS is 9.9-10.6. They are effectively in series so each needs to handle the current. Pick whatever diode you want that can handle at least 10.6 amps.

RDL2004 · 7th February 2006, 08:41 PM

I think maybe you are confusing voltage and current with the RMS.

For a power supply, I would use at least 1.5 times the peak current for the rectifier diodes.

The 15 amp ones might be okay, but I would use the 50 amp ones just to be safe.

- Rick

richie00boy · 7th February 2006, 09:10 PM

Yes, just to add, the AC current will be greater than the DC current by a factor of about 1/0.62, so if your load on the rectified side is 10.6A then 15A diodes will not be enough.

hawkfeather · 8th February 2006, 04:33 PM

I have plenty of all of them so I'll use the 50A stealth ones. Thanks for the help! I finally have all of the parts together so now here goes my building skills!!

7th February 2006, 01:58 PM	#1
hawkfeather diyAudio Member Join Date: Dec 2005 Location: PA	Full Bridge Singles... If I choose to use 4 Stealth diodes for a full bridge rectifier on my power supply, how many amps should they each be ideally rated for if my total peak requirement is 14-15A? I have 8, 15, and 50A pieces. __________________ Is it not better to burn out, than to fade away?

7th February 2006, 02:19 PM	#2
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	If your peak is 14-15A your RMS is 9.9-10.6. They are effectively in series so each needs to handle the current. Pick whatever diode you want that can handle at least 10.6 amps. __________________ www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

7th February 2006, 09:10 PM	#4
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	Yes, just to add, the AC current will be greater than the DC current by a factor of about 1/0.62, so if your load on the rectified side is 10.6A then 15A diodes will not be enough. __________________ www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

8th February 2006, 04:33 PM	#5
hawkfeather diyAudio Member Join Date: Dec 2005 Location: PA	Advice taken.. I have plenty of all of them so I'll use the 50A stealth ones. Thanks for the help! I finally have all of the parts together so now here goes my building skills!! __________________ Is it not better to burn out, than to fade away?

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

7th February 2006, 08:41 PM	#3
RDL2004 diyAudio Member Join Date: Oct 2004	I think maybe you are confusing voltage and current with the RMS. For a power supply, I would use at least 1.5 times the peak current for the rectifier diodes. The 15 amp ones might be okay, but I would use the 50 amp ones just to be safe. - Rick

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Full Bridge X Half Bridge: What's The Best?	CHACALPOWERS	Power Supplies	8	18th July 2008 04:45 PM
half-bridge VS. full-bridge	gearheadgene	Class D	3	25th May 2007 08:49 PM
The difference of Push-pull,Half-bridge,Full-bridge	digi01	Chip Amps	0	8th September 2006 02:10 AM
Full Bridge Amp?	Tony	Tubes / Valves	8	17th December 2005 11:33 PM
Whats the difference between full bridge and half-bridge SMPS ?	skaara	Class D	6	3rd February 2005 07:23 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read