[PSES] Safety & EMC during Proof of concept

2019-03-13 Thread Frank Tang
Hi Everyone,This is my first time regarding prototype/proof of concept products, is it subjected to the same safety and emc guidelines? -- Thank you and best regards. - Frank - This message is from the IEEE Product Safety Engineerin

Re: [PSES] classification of the output

2019-03-13 Thread John Barnes
Joe, I think that you are referring to the SawStop invented by Steve Glass. https://www.youtube.com/watch?v=dekzPA6nhC4 shows it in action. John Barnes KS4GL, PE, NCE, NCT, ESDC Eng, ESDC Tech, PSE, Master EMC Design Eng, SM IEEE (retired) 216 Hillsboro Ave Lexington, KY 40511-2105 (859)

Re: [PSES] human skin resistance

2019-03-13 Thread Adam Dixon
Ah, the other skin effect. ;-) Not exactly what is sought, but maybe there is useful information in the realm of BIA research such as this papers like this (?) (apologies for the long link copied from iPad browsing..): https://watermark.silverchair.com/388s.pdf?token=AQECAHi208BE49Ooan9kkhW_Er

Re: [PSES] classification of the output

2019-03-13 Thread John Woodgate
Is it not possible to refer such a divergence to TC108 for a ruling on interpretation? Maybe even an Interpretation Sheet would be generated if the 'ES2' test house has misunderstood the standard. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Raylei

Re: [PSES] classification of the output

2019-03-13 Thread Richard Nute
Hi Boštjan: If you say ES1 and another certification body says ES2, then a negotiation must take place. To avoid negotiation, you must change your verdict to ES2. However, the manufacturer wants ES1, which is determined by the voltage. I agree that the voltage waveform is ES1

Re: [PSES] human skin resistance

2019-03-13 Thread John Woodgate
I don't know of any that Pete Perkins wouldn't know about. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-03-13 19:06, Richard Nute wrote: John referenced “skin resistance.” To my knowledge, there is no research that show

[PSES] human skin resistance

2019-03-13 Thread Richard Nute
John referenced “skin resistance.” To my knowledge, there is no research that shows skin resistance and body resistance as separate parameters. We only know total body resistance, and that it is a variable that changes – lowers -- with applied voltage and time. Having said that, a goo