Friday, February 6, 2015

Now There's Help for Controlling 40kV X-ray Tubes - Part 1

New 40kV Microcontroller-based HV Power Supply Takes the Guesswork Out of X-ray Tube Outputs

High voltage designs present unique and difficult problems not normally encountered in low voltage designs. 

For instance, on a high voltage printed circuit board, isolation between traces becomes an issue.  Traces that are normally 10mils apart at 10V have to be spaced further apart of the voltage difference between them increases to 1,000V.  Components often have to be encapsulated to prevent arcing through air, and high voltage sections usually require electrical isolation from low voltage systems. 

Image Credit - High Voltage Vacuum Rectifiers Capable of Producing X-rays

Strange Things Happen At High Voltages

Most high voltage designers have learned to allow for the sometimes strange and inexplicable things that happen at high voltage.  Corona is always a favorite – that thing that happens when a trapped gas is repeatedly polarized.  Over time, it can eat through wire insulation causing shorts and all sorts of mayhem.  Or how about the unintentional solder peak that serves as a focal point for field potentials, eventually resulting in an arc under the right conditions? 

Yes, high voltage design can be exciting and fun! 

X-ray Tubes and HV Power Supplies

If you’re working with x-ray systems and tubes, you understand how challenging it can be to control the power supply that controls the tube.

There is a new product coming to the market that will assist you in powering and controlling your x-ray tube.

Next week we'll present standard features, and advantages of going digital....

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