For anyone who has thought about building a magnetic pulser using the small 
party strobe from radio shack, that particular strobe light has just been 
discontinued.  Radio shack still has some ....and can probably still order them 
for you....they are now priced at 10.97 instead of 35.00......so the price  has 
never been better for this project.  There is other special instructions in the 
archives from Brooks Bradley at 
http://escribe.com/health/thesilverlist/m42428.html
The fuller set of instructions is at:
http://www.royalrife.com/superthumpy.html
I am currently planning to build 3 for myself and friends.....Robb