|
12 v power supply help |
Post Reply 
|
| Author | |
mike03 
Registered User 
Joined: 07 September 2009 Location: Jamaica Status: Offline Points: 153 |
 Post Options
 Thanks(0)
 Quote Reply
 Topic: 12 v power supply helpPosted: 22 June 2011 at 5:23pm |
|
CAN SOMEONE TELL ME THE REQUIRED amperage TRANSFORMER I WOULD NEED TO RUN A 300 WATT RMS. CAR AMPLIFIER I KNOWN THAT THE VOLT SHOULD BE ABOUT 9V. AFTER RECTIFICATION IT WILL BE 12V. AND HOW MUCH Farad MY FILTER CAPS SHOULD BE?
|
|
 |
|
|
freeytrap
Registered User
Joined: 18 May 2007 Location: chester Status: Offline Points: 313 |
Post Options
Thanks(0)
Quote Reply
Posted: 22 June 2011 at 11:59pm |
|
300w /12v = 25a
but if your amp is 300w rms your probably drawing more than 300w so id go a bit biger also (someone corect me if im wrong) most amps ar desinged to run at 13v this may make a difrence as for filter caps do you mean for smothing the power if the system is staying in one place and only being used one a week or so a deep cycle battery and small charger/trickle charge may be a cheeper alternative Edited by freeytrap - 23 June 2011 at 12:05am |
|
|
|
|
SamV
Old Croc 
Joined: 21 October 2008 Location: London Status: Offline Points: 8711 |
Post Options
Thanks(0)
Quote Reply
Posted: 23 June 2011 at 12:16am |
|
It sounds like you're trying to set your car amp up for indoor/mains use?
But anyways, unless your setup is in a car, don't use power caps. |
|
|
|
|
infrasound
Old Croc
Joined: 13 May 2011 Location: Brizzle Status: Offline Points: 2276 |
Post Options
Thanks(0)
Quote Reply
Posted: 23 June 2011 at 12:33am |
|
why not pre built smps instead of linear supply?
|
|
|
|
|
freeytrap
Registered User
Joined: 18 May 2007 Location: chester Status: Offline Points: 313 |
Post Options
Thanks(0)
Quote Reply
Posted: 23 June 2011 at 1:40am |
that looks like a very nice power suply for the cost scrap my idear of battery and a trickle charger |
|
|
|
|
mrchay
Young Croc 
Joined: 29 September 2008 Status: Offline Points: 565 |
Post Options
Thanks(0)
Quote Reply
Posted: 23 June 2011 at 10:03am |
|
What I have done in the past is to use a SMPS from a computer. A modern decent one gives pretty good current, perhaps not 25 amps though. dont need to go bonkers like this but something like these guys: http://www.instructables.com/id/Convert-an-ATX-Power-Supply-Into-a-Regular-DC-Powe/ |
|
|
|
|
Post Reply
|
|
| Tweet |
| Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |
Topic Options
infrasound wrote: