>Hi again,
>
>I have some sensitive analog circuitry that I need to do some relay switching
>in for varying some filter bandwidths and other things.  I am considering
>using reed relays.  Does anyone have any comments about this?  I would like
>to drive the relay coils direct from a PIC I/O pin (16C74A or 16C84.....not
>sure yet).  Will the protection diodes on the PIC I/O pins be adequate for
>coil suppression or do I need external diodes as with other relay types?  I
>have no experience with reed types but believe the inductive kick should be
>smaller from reeds.

Ypu'll still need to drive the coil - there are better ways...
Why not use analog multiplexers and switches ?

Mike
Perth, Western Australia

Socrates once gave the advice to "by all means get married... If you
get a good wife you will become happy, if you get a bad one you will
become a philosopher."