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Old 8th January 2013, 03:34 AM   #1
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Default PSU 2X19vac means

Hi All!

I need help to understand or an explanation the meaning of 2x19VAC? My Behringer MX2624A UPS was lost and this 2x19vac AC is the power source needed. Hope someone will enlighten me.. Thanks
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Old 8th January 2013, 06:17 AM   #2
MarianB is offline MarianB  Romania
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2x19Vac can be interpreted in segments like this:

-2x means two of the rated voltages, so in this case for example a power transformer with 2 identicall secondaryes, or as it is mostly sayd, a symmetrical power source.
-19V means the voltage rating of the supply.
-ac means the tipe of the current, in this case it is Alternate Current, witch means the current is going possitive and then negative in cycles, with respect to the 0V line, search the web for sinus wave immages and you will see what i mean.

So in conclusion, in your case you would nead a power source giving 2 symmetrical outputs rated at 19V alternate current, of shortly, Vac.
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Old 8th January 2013, 09:26 AM   #3
DF96 is offline DF96  England
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It probably means 19V RMS AC, either as two separate secondaries or one 38V RMS AC with a centre tap. After rectification this will give peak DC around 25V.
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Old 9th January 2013, 04:32 AM   #4
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So, this means the transformer secondary would be 19 - 0 - 19 ? I opened the back cover of my mixer to check the supply but its only indicated X15. Whats this mean? I really confusing if this is 15 volts or 19 volts ac? Please help if someone could put a diagram how to to that.. My unit is Behringer MX2642A mixer. Thank you & God bless!
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