due to recent events and a natural mistrust when it comes to statements about security... i thought it might be useful to address radiation here.
after a quick search i found this neat thing. http://www.sparkfun.com/products/8875
from the datasheet:
Gas filling Ne +Halogen
Cathode material 446 Stainless Steel
Maximum length (inch/mm) 1.94/49.2
Effective length (inch/mm) 1.5/38.1
Maximum diameter (inch/mm) 0.59/15.1
Effective diameter (inch/mm) 0.36/9.1
Operating temperature range °C -40 to +75
it's not as small as i would wish it to be but still within reasonable limits. altho 500 volts are quite a bit, it is possible to deal with it.
power demand should be pretty low so a small li cell and inductive charging should keep it running for a day... or more. i am lacking precise numbers here but i don't see a major current demand other than the one needed to maintain the voltage.
anyone would be interested? ideas? thoughts?
btw..it really would be good if we can make a basic subdermal battery and charger solution since most projects need a power supply anyway.