George White wrote in a message to Roy J. Tellason:

 RJT> What I don't understand there is why I'd want to use one of those
 RJT> rather than just use an op amp connected in a unity-gain
 RJT> configuration..

 RJT> 

 GW> The reason was in the bit you snipped! :-(. They have better
 GW> bandwidth than the common Op-amps of the era (like the 741, which
 GW> they predate), and are compensated (unlike the 709) and so are
 GW> easier to use. 

Oh.  Well,  I don't remember the last time I used a voltage follower
configuration,  but since I've got these,  if I need one for some reason I
guess I might as well use them.

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