Tachometer

[Henderson,Eric]

Gabriel,
         You get the cigar. Because it is AC there is a sine wave above and below the line per second for each cycle.

E.

-----Original Message-----
From: discussion-request at nsrca.org
[mailto:discussion-request at nsrca.org]On Behalf Of Gabriel Gonzalez
Sent: Friday, October 24, 2003 8:40 PM
To: discussion at nsrca.org
Subject: Re: Tachometer


120 pulses x 60 seconds = 7200 pulses/minute

7200 / 2 blades = 3600rpm

Gabriel


----- Original Message ----- 
From: "jim ivey" <jivey61 at msn.com>
To: <discussion at nsrca.org>
Sent: Friday, October 24, 2003 6:16 PM
Subject: Tachometer


>
> Ok time for another thread.
> I just put batteries in my tachometer and I want to calibrate it. If I set
> it to sense a 2 blade prop and hold it to the flourescent light bulb in
the
> kitchen, what should it read. There are 120 pulses of light on 60 cycles.
> Why does it read 36. If I select a 3 blade prop it reads 23.  WHY. What
> should I set it to read looking at this light?
>
> Jim Ivey
>
>
> jivey61 at msn.com
>
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