Rosemary Ainslie circuit demonstration on Saturday March 12th 2011

[neptune]

Hi Rosemary .The scope shots look convincing to me but I would like to see comments from Harti . I know that you get overwhelmed with info , but bear this in mind .Harti suggested replacing the Function generator with a DC power supply , and you said it might be hard to obtain one . You can get the same effect using just TWO CHEAP COMPONENTS . The gate will draw no current , so get a 9 volt transistor radio battery , and a 1K potentiometer . The pot will have 3 terminals . Connect the center one to the Fet Gate . Connect the other 2 to the 9 volt battery terminals . Now run a wire from the battery positive terminal to the ground of your device .Job done . You now have a neg potential on the gate which can be varied from zero to 9 volts by the 1K pot . Try it when you get time .

[markdansie]

I received a private email today from someone that suggested that you are looking for ways to measure the outcomes to suit your thesis.  I and many others have also reached that conclusion some time ago. This reminded me to a visit I had in the USA to a large research institute. I was talking about analysing data with the head of one of the research programmes and two PHD graduates. We all agreed it is common problem even amongst academics of sometimes looking at measuring methodologies or selective data to suit ones bias towards a hypothesis rather than a rational look at all methodologies. This is why Peer Review is so important.
Several people have made excellent suggestions, and offers.  Sadly you only talk to those who concur with you and ignore the others.
So please take a fresh approach of analysing what you have done to date and how you could better do it. Until you do come up with methodologies that satisfy the industry professionals, you will never be taken seriously by mainstream.
I am writing this as helpfull advice, not to shoot you down. Go back again , read what has been said and device a new methodology. People want to help.
Kind Regards
Mark

[Feynman]

Thanks for posting the higher-res scope shots.  I am very busy with other projects at the moment, but I'll be interested to see how this turns out.

[Rosemary Ainslie]

Hi Rosemary .The scope shots look convincing to me but I would like to see comments from Harti . I know that you get overwhelmed with info , but bear this in mind .Harti suggested replacing the Function generator with a DC power supply , and you said it might be hard to obtain one . You can get the same effect using just TWO CHEAP COMPONENTS . The gate will draw no current , so get a 9 volt transistor radio battery , and a 1K potentiometer . The pot will have 3 terminals . Connect the center one to the Fet Gate . Connect the other 2 to the 9 volt battery terminals . Now run a wire from the battery positive terminal to the ground of your device .Job done . You now have a neg potential on the gate which can be varied from zero to 9 volts by the 1K pot . Try it when you get time .

Hello Neptune.  You make this sound so easy.  I'll ask if Marco can set this up - but I must admit I'm reluctant to change that artefact.  Anyway.  I'll CERTAINLY try the Power supply number as that's within my competence.  But that test needs to wait until the guys are back from a conference.  Sometime next week.  That's the soonest.  I'll do more waveforms at the weekend and - hopefully - show you some more of those really complex numbers where the battery average itself falls to something weird.

added - sorry Neptune.  Yes.  If the guys can set this up for me - I'll test it.  It seems such an elegant solution.

And Feynman, I'd be glad if you get on board here eventually.  I"m still battling to find some way of showing those spreadsheets.

Kindest regards,
Rosemary

[Sprocket]

Rosemary, I've just been going through your blog-Report - you really should do something about the images there, though 'click-able', they don't expand much if at all, and are almost unreadable!  But I made a discovery - despite all your talk of negative voltages on the gate from the get-go, I always took this to mean zero-volts! Rank-amateur and sad but true, it also kinda explains why I had a negative result the first time round - I was using a pulse-generator, 0->5v range, not the the 555 circuit.

Do you have a link to where someone could buy the heater element you used?  The company "Specific Heat" you list in the report doesn't google anything relevant.