I am looking for an obselete chip: the MF6-50, it is a Butterworth low-pass filter and was produced by National Semiconductors. Has anyone any idea where I could get some, I've looked everywhere I could think off, however this is not really my field. Thank you.
Thanks automatic 2, the steel can be assumed to be highly polished, the moisture content I am unsure about, however I am only really after a very approximate value. Has anyone any ideas?
I know this topic has already been discussed in detail, however I can't find the information I require. I need to to know a value (if only very approximate) for the coefficient of friction between steel (preferably stainless steel or similar) and a fabric (cotton, denim, anything really). If...