Power supply 2x24 , 2A[schematic needed]

gioutsos001 · 22nd February 2011, 10:51 PM

Hello ,
I want a schematic of a power supply[2x24 V , 2 A] which will supply an amplifier [50 W ] for woofers.
thx

dave_gerecke · 23rd February 2011, 02:50 AM

See Pass Laboratories. Check out the documentation for Zen version 3 and Zen version 5. These have information in regards to just such a power supply as you are looking for.

Peace,

Dave

AndrewT · 23rd February 2011, 11:10 AM

Hi,
the peak current demand from a 50W speaker will far exceed 2Apk.
expect upto 20Apk for a 4ohm speaker and upto 15Apk for an 8ohm speaker.

Gopher · 11:33 AM

Ever heard of Google?

I know this is a help forum but at least try to make an effort to find out yourself before you ask.

gioutsos001 · 24th February 2011, 04:42 PM

Quote:

Originally Posted by Gopher

Ever heard of Google?

I know this is a help forum but at least try to make an effort to find out yourself before you ask.

I did already, I searched on google first.
as you say if this forum is to help, not help me with this
thx.

AndrewT · 24th February 2011, 05:24 PM

Have you found out yet what type of supply an amplifier needs?
Have you found out yet what level of AC current flows through an 8ohm 50W resistor driven to 50W?
Does the AC current change when you drive a 4ohm resistor to 50W?
Have you found out if a 50W speaker is a similar load on an amplifier as a resistor of the same nominal impedance?

Do some homework and you will discover that your request for a 2x24 V, 2A schematic is a nonsense.

BZed · 24th February 2011, 05:32 PM

You really are going to need a much bigger power supply that the one you are asking for.

gioutsos001 · 24th February 2011, 05:38 PM

Quote:

Originally Posted by AndrewT

Have you found out yet what type of supply an amplifier needs?
Have you found out yet what level of AC current flows through an 8ohm 50W resistor driven to 50W?
Does the AC current change when you drive a 4ohm resistor to 50W?
Have you found out if a 50W speaker is a similar load on an amplifier as a resistor of the same nominal impedance?

Do some homework and you will discover that your request for a 2x24 V, 2A schematic is a nonsense.

much of what you ask me I've already studied, some not!
I would really sit down to do work for home, and i hope i can understand why this is nonsense.

Gopher · 28th February 2011, 07:55 AM

Gioutsos - my advice to you is buy an amplifier.

It will be cheaper than building one and inevitably less painful for you, especially when you try to wire up the mains.

Seriously, if you don't understand the basics of Ohm's law, don't **** around with lethal voltages.

22nd February 2011, 10:51 PM	#1
gioutsos001 diyAudio Member Join Date: Feb 2011	Power supply 2x24 , 2A[schematic needed] Hello , I want a schematic of a power supply[2x24 V , 2 A] which will supply an amplifier [50 W ] for woofers. thx

23rd February 2011, 11:10 AM	#3
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, the peak current demand from a 50W speaker will far exceed 2Apk. expect upto 20Apk for a 4ohm speaker and upto 15Apk for an 8ohm speaker. __________________ regards Andrew T.

24th February 2011, 11:31 AM	#4
Gopher diyAudio Member Join Date: Nov 2005 Location: UK	Ever heard of Google? I know this is a help forum but at least try to make an effort to find out yourself before you ask. Last edited by Gopher; 24th February 2011 at 11:33 AM.

24th February 2011, 05:24 PM	#6
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Have you found out yet what type of supply an amplifier needs? Have you found out yet what level of AC current flows through an 8ohm 50W resistor driven to 50W? Does the AC current change when you drive a 4ohm resistor to 50W? Have you found out if a 50W speaker is a similar load on an amplifier as a resistor of the same nominal impedance? Do some homework and you will discover that your request for a 2x24 V, 2A schematic is a nonsense. __________________ regards Andrew T.

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23rd February 2011, 02:50 AM	#2
dave_gerecke diyAudio Member Join Date: Dec 2007 Location: Vermont	See Pass Laboratories. Check out the documentation for Zen version 3 and Zen version 5. These have information in regards to just such a power supply as you are looking for. Peace, Dave

24th February 2011, 05:32 PM	#7
BZed diyAudio Member Join Date: Jun 2009	You really are going to need a much bigger power supply that the one you are asking for.

28th February 2011, 07:55 AM	#9
Gopher diyAudio Member Join Date: Nov 2005 Location: UK	Gioutsos - my advice to you is buy an amplifier. It will be cheaper than building one and inevitably less painful for you, especially when you try to wire up the mains. Seriously, if you don't understand the basics of Ohm's law, don't **** around with lethal voltages.

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