NODRAIN

Negative to +5V converter

• Offers up to one amp of precise 5Volts
• Takes its power from where you won’t use it: the negative rail
• Gives you back the +12V power previously used to make 5V
• High efficiency conversion: Every milliamp delivered on the 5V rail only draws around half as much milliamps on the -12V rail
• Soft-start prevents current inrush at power-on
• Tolerates wide voltage variations of the -12V source
• Miniature module 20x28mm - 0.78x1.10"
• Adjustable output voltage - delivered calibrated
• Protected against:
• Current overload
• Input overvoltage
• Overheating
• Short-circuit
• Reverse insertion
• Reclaim your unused watts ! 

  Did you know that typical 5V adapters draw 240% of the actual wattage they deliver, with 140% being wasted as heat ? 
  Moreover they take it from your precious +12V rail.

  Beating even other switching-supply adapters, the NoDrain converter takes its power where there is plenty unused: the -12V negative rail ! * 
  You can safely assume that the current drawn on the 5V adapter will take half as much on the -12V rail.

  The NoDrain adapter does its conversion with high efficiency. 
  With 1 amp available, you can distribute the 5V from the NoDrain to several busboards. 
  Thanks to ultra high-speed switching technique there is no noise to be heard.

  Just plug a NoDrain in one of the connectors at the back of your rack and you’re done.

  Do you have this kind of regulator to give you 5V?

  Linear regulators are the worst possible solution to make a 5V rail. 
  You can easily recognize them by their heatsink tab.

  Every single Watt provided on the 5V rail actually draws 2.4 Watts on your 12V rail ! In other words, when 1 Watt goes to the modules, 1.4 additional Watts are wasted heating your case!

  See below how the NoDrain transfers the current consumption from the positive rail to the negative rail while dividing it by two !

  Example current draw of a setup using a linear regulator being updated with a NoDrain

  	Linear	NoDrain
  +12V	1500 mA	1100 mA
  +5V	400 mA	400 mA
  -12V	700 mA	900 mA

  The power needs on the 5V rail are typically covered by the unused power available in the negative 12V rail*. All of your +12V power is suddenly available for its dedicated use! 
  Let’s reclaim a good chunk of power on your +12V rail for more modules!

  ... or maybe one of those makes your 5V?

  Better than a linear regulator, but still. The conversion efficiency of these switching regulators is good, only wasting 10 to 20% in heat, but ...

  Trouble is that they draw their current from the rail with the heaviest burden: the 12V rail.
  This leaves less +12V power for modules and increases the imbalance between the +12 and -12 rails *.

  Example current draw of a setup using a typical switching regulator being updated with a NoDrain

  	+12 to +5	NoDrain
  +12V	1500 mA	1300 mA
  +5V	400 mA	400 mA
  -12V	700 mA	900 mA

  This is where the NoDrain regulator comes to the rescue. The power needs on the 5V rail are typically covered by the unused power available in the negative 12V rail. 
  All of your +12V power is suddenly available for its dedicated use. 
  Let’s reclaim some power from your +12V rail for more modules!