If you wish to control 3-phase heaters require power controllers, how do you decide which method of control to select? ‘Two-leg versus three-leg control’ and ‘zero cross versus phase-angle control need to be considered.’ The following will help you decide when each method
Serious errors in calibration and display can result if the wrong sensor type is selected on the controller versus what is actually wired to it. Only a physical check of sensor wire and sensor prompts can detect this condition. A
Residual Gas Analyzers (RGAs) are quadrupole mass spectrometers that provide for routine, fast, wide dynamic range measurements of the partial pressures of the species resident in your vacuum chamber or system. Vacuum levels can be analyzed from as low as
If you are measuring the temperature of a static surface, whether or not its temperature is changing, all is good. But what happens when you are changing the surface and its emissivity is also changing? Your pyrometer inaccuracy can increase
The term “vacuum,” as it pertains to the use of vacuum to study its effects or to enable something to happen in a high technology sense, has a broad range of definitions and sub-categories. Two very different definitions are: 1. a space entirely devoid of matter.
If you are depositing dielctric layers using RF and DC (or AC) power simultaneously, you run the great risk of damaging your DC supply and/or creating interference problems. A well designed and constructed “Blocking Filter” will prevent these issues from
There are two common ways to deal with process exhaust effluent: heating the forelines and components to maintain the effluent in a gaseous state until it enters the scrubber, or trapping the effluent in a place where you can access
Typically, the manufacturer of your processing system will know how much heat is needed to be removed from the relevant location in order to operate safely and efficiently. If you need to size a recirculating chiller for a new application, here
This is an excerpt from an article posted by Advanced Energy on February 11, 2014: “Innovating Cathodic Arc Deposition: High-Performance Bias” In the European Union, road transport is the second biggest source of greenhouse gas emissions, right after power generation.
This is a re-post of an article authored by Doug Pelleymounter, Senior Applications Engineer for Advanced Energy, dates March 11, 2014 “I get this question a lot: “How do I know when to use DC and when to use RF
