Jeff, I don't think your scope would need that level of resolution. Godes describes using the following: A 100MHz Fluke 196C oscilloscope meter.
Anyway, there is not a lot of info on the net about using PWM to make bipolar pulses. Producing a DC pulse to those specs is not so difficult. A bipolar pulse seems to be a different story. I have a 25mhz oscilloscope, so I'll try to see if it has the resolution needed. Supposedly, it will show down to 5 ns/div on the horizontal axis. I'll try to experiment to see if I can get a 100 ns DC pulse with PWM and see how the scope does. Here is the scope I have. http://www.amazon.com/dp/B007T6XNCA/ref=pe_175190_21431760_M3T1_SC_dp_1 Jack On Thu, Nov 22, 2012 at 3:38 PM, Jeff Berkowitz <[email protected]> wrote: > Interesting. A U.S. nickel is 1.95mm thick. > > > On Thu, Nov 22, 2012 at 1:21 PM, James Bowery <[email protected]> wrote: > >> It's hard to know where to begin here but let me just say this that given the >> speed of sound in >> nickel<http://www.olympus-ims.com/en/ndt-tutorials/thickness-gage/appendices-velocities/> >> : >> >> 5630m/s >> >> and 430kHz: >> >> 5630m/s;430kHz?mm >> >> ([5630 * meter] / second) * (430 * [kilo*hertz])^-1 ? milli*meter >> = 2.0838194 mm >> >> In other words, a 2mm electrode should exhibit resonance at ~430kHz. >> >> >> On Thu, Nov 22, 2012 at 2:47 PM, Jones Beene <[email protected]> wrote: >> >>> On the contrary James, at least two of us did look closely at this >>> possibility [electrode acoustics]. **** >>> >>> ** ** >>> >>> My associate went to trouble to find and download a mpeg sound file of a >>> bicycle bell of the same general size as Davey’s, and plugged it into a >>> program for this kind of analysis – in fact it is dedicated bell analysis >>> software that has proved very accurate for electrodes in the past. The >>> natural acoustic of this hemisphere are nowhere close.**** >>> >>> ** ** >>> >>> The main freq is 4,445.5 Hz, with some sub harmonics, the lowest being >>> around 521/545 Hz, but those are so faint as to be discarded. Higher >>> harmonics are barely above noise.**** >>> >>> ** ** >>> >>> Thus, since the acoustics of the electrodes were off by two orders of >>> magnitude over the signature sound, we did not think that electrode >>> acoustics were in any way relevant as an alternative explanation, or >>> otherwise worth pursuing.**** >>> >>> ** ** >>> >>> Jones**** >>> >>> ** ** >>> >>> ** ** >>> >>> *From:* James Bowery **** >>> >>> ** ** >>> >>> As I previously >>> advised<http://www.mail-archive.com/[email protected]/msg73144.html> >>> :**** >>> >>> ** ** >>> >>> "Look at the acoustics of the electrodes."**** >>> >>> ** ** >>> >>> Since this advice seemed to make no impact on the discourse here at >>> vortex-l, let me expand:**** >>> >>> ** ** >>> >>> Acoustic resonance in the metallic electrodes does have a reasonable >>> chance of bearing directly on the creation of the "nuclear active >>> environment" hypothesized to exist. I don't think I need to expland on >>> list the possibilities here.**** >>> >>> ** ** >>> >>> Moreover, if one looks at the speed of sound in metals, the "430kHz LENR >>> signature" regime corresponds to the thickness of the cathodes frequently >>> reported as exhibiting the phenomena.**** >>> >>> ** ** >>> >>> Need I say more?** >>> >>> ** ** >>> >> >> >
