Well two things. First a quartz crystal can be both a thermistor and piezoelectric transducer ...
Second, the Wiki entry gives this factoid: "For example, a 1 cm^3 cube of quartz with 2 kN of applied force can produce a voltage of 12,500 V. OK that much force (and much more) is not a problem, and the voltage is already getting up there into Farnsworth Fusor range. Maybe what Rossi has done is to sandwich 5 thermistor discs alternating with disks of compressed "nanometric" nickel hydride which is itself seeded with piezo material, in such a way that you get some kind of a positive feedback where a resonance sets up to "almost self-power" the thermistors. However, one would have suspected, with all of those physicists and observers present - that ultrasound would be mentioned by someone before now. -----Original Message----- From: Terry Blanton Subject: Re: [Vo]:Is there a "SONO" connection to the Rossi Demo? Jones Beene wrote: > No, no. It is not the PLC which is supplying the high frequency range. > The thermistor material itself (barium titanate, no less) is "piezoelectric" so supplying DC current to it produces ultrasound as an intrinsic feature. Get it? Maybe I do not understand the piezoelectric effect. I thought constant bias caused crystal stress and vice versa. How does a constant bias cause oscillations. Hmmm. Quartz (crystal) oscillators do indeed work that way. Off to do research . . .
