Please Note:   GES does not teach these technologies, which are proprietary industrial information, so please do not write and ask our engineers to explain how our products work. Also please note that we cannot respond to all such casual requests personally, so by necessity they will be ignored. Serious inquiries are welcome, and should include identification of the author and what his or her position is and in what company, complete contact information, and specific identification of the application(s) for which you are inquiring. Thank you.