[sci.electronics] Ultrasonics info

jimd@hpnmdla.sr.hp.com (Jim Dyer) (06/07/91)

Help! I'm looking for info on ultrasonics(in the >90db range):

  good sources of general information 
  transducers, types & availability
  frequency & power ranges commonly available
  good supply companies 
 
I have an idea that I've wanted to experiment with 
for several years, but have lacked the time and info
to get on with it. 

Jim Dyer
jimd@sr.hp.com