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RE: [N8VEM-S100:1271] LAVA-10 Zener Diode = 1N5226 (3.3v)

Hi Paul!  Thanks!  Yes, the 3.3VDC Zener diodes are added after the 100 ohm
resistors for 5V to 3.3V level transition.  In theory you don't need them
and adding the Zeners are kind of a "belt and suspenders" approach to level
transition.  However the LAVA-10 is one expensive component so it is worth a
the extra expense to protect it.  I'd consider them optional but a worthy
investment even if not needed.

Thanks and have a nice day!

Andrew Lynch

> -----Original Message-----
> From: n8vem...@googlegroups.com [mailto:n8vem-
> s1...@googlegroups.com] On Behalf Of Paul Birkel
> Sent: Sunday, January 06, 2013 2:50 AM
> To: n8vem...@googlegroups.com
> Subject: [N8VEM-S100:1271] LAVA-10 Zener Diode = 1N5226 (3.3v)
> Is it intended that 1N5226 (3.3v) Zener diodes be used for the logic-level
> shifting circuits (with the 100 ohm resistors)?
> -----