Fusion Message Board

In this space, visitors are invited to post any comments, questions, or skeptical observations about Philo T. Farnsworth's contributions to the field of Nuclear Fusion research.

Subject: Re: DIY HV Pulse Cap?
Date: Nov 01, 08:05 am
Poster: Scott Stephens

On Nov 01, 08:05 am, Scott Stephens wrote:

>High-K ceramics are no good for pulse capacitors >precisely because they are piezoelectric, and >tend to crack or pull their connections loose >under the mechanical stress induced by a fast >discharge.
> Richard Hester

Yes, that's the problem. When working with Hi E and Hi Mu ceramics, the engineering is more like that of transducers. Electrode and ceramic thickness depends not only on voltage but acoustic considerations. The capacitor could exhibit 'motional inductance' of hundreds of henries, like quartz crystal for oscillators can!

Mechanical problems need to be dealt with. But the advantage of working with higher voltage means the size decreases with the square of the voltage increase, and with 1000's of times more permittivity/permiability, power supplies can be shrunk over 4 orders of mangnitude!

Worth the research & trouble maybe?!?!