Is it the good choice - power supply - diyAudio
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Old 7th January 2008, 06:34 AM   #1
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Join Date: Jan 2008
Default Is it the good choice - power supply

I realy dont have any knowledge in power supply. I want to feed a 12 VDC amplifier (4x100 watts - 4 ohms) with this Omron power supply. The dealer suggested me to buy the 600 watts - 50 amp.

Can you help me to make an intelligent choice.

Thank you.

Omron S8VM 60012C - Price= $325 CAN

Data sheet

http://www.ia.omron.com/data_pdf/dat...eet_csm140.pdf

Power rating 600 W
Input Voltage
100 to 240 VAC

Frequency
50/60 Hz

Current 100-V input
8.0 A max. (5 V)
8.3 A max. (12 V, 15 V, and 24 V)

Current 200-V input 4
.0 A max. (5 V)
4.2 A max. (12 V, 15 V, and 24 V)

Power factor
100-V input = 0.98 min.
200-V input = 0.93 min.

Leakage
100-V input 0.4 mA
200-V input 0.75 mA max.

Inrush current
100-V input 20 A max.
200-V input 40 A max.

Output Voltage adjustment range
-20% to 20% (with V. ADJ)

Ripple 3.8% (p-p) max. (5 V), 2.0% (p-p) max. (12 V), 2.0% (p-p) max. (15 V), 1.25% (p-p) max. (24 V), (at rated input/output voltage)

Input variation influence 0.4% max. (at 85 to 264 VAC input, 100%)

Load variation influence
(rated input voltage) 0.6% max. (with rated input, 0 to 100% load)

Temperature variation
influence 0.02%/C max.

Startup time
1,000 ms max. (at rated input/output voltage)

Hold time
20 ms typ. (15 ms min.) (at rated input/output voltage)

Additional functions

Overload protection
Overvoltage protection
Overheat protection
Power failure alarm indication
Power failure alarm output
Series operation
Parallel operation
Remote sensing function
Remote control function
Storage temperature -25 to 65C
Ambient operating
humidity 30% to 85% (Storage humidity: 25% to 90%)
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Old 7th January 2008, 12:52 PM   #2
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
would you get better performance by buying two, two channel mains powered amplifiers to give you your target 100W into 4ohms?
I wouldn't pay to down convert to 12Vdc, to up convert to ~30Vac, to convert back to ~40Vdc
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regards Andrew T.
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Old 8th January 2008, 02:15 AM   #3
diyAudio Member
 
Join Date: Jan 2008
I'm a car audio fan and since I come on this forum I plan to install a setup in my living room.

I already have the enclosures for witch I have posted a thread.

Home audio Kompressor speakers

I need advise for the speakers choice.

My amplifier is an Orion 8004 and the head unit an Eclipse CD7000.

To power this setup I need a power supply. But as I said I dont have any knowledge about PS and I need help. I found this one (Omron) and I want to know if it is appropriate.
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Old 9th January 2008, 11:22 PM   #4
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Join Date: Jan 2008
I'm not stick with Omron. If you have an other one to propose, let's go.
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