[NCARC] Meeting Saturday

[scomind at aol.com]

 Thanks to everybody who attended! It was fun to show off my "day job" work, and I hope other club members will continue to make presentations based on their home projects, work projects, or whatever might be of interest to the group.

Steve had commented on the "capacitor formula" I = C x V x F, indicating F should be in radians, not hertz, so I looked it up in The Source Of All Knowledge (the Internet). Radians are used when calculating current and power involving AC sinusoids because Xc = 1/(w C) = 1/(2 pi F C). The pulse-oriented publications show CVF currents with F in hertz, and you'll mostly find those references in IC and A/D literature because of MOSFET currents. If anyone else has info on this topic, I'd like to hear about it.

73,

Bob, WA9FBO

 




 

 

-----Original Message-----
From: John at <kb0ne.ars at gmail.com>
Cc: scomind <scomind at aol.com>; ncarc <ncarc at mailman.qth.net>
Sent: Sat, Mar 16, 2013 11:39 am
Subject: Re: [NCARC] Meeting Saturday


Looks like the tent might have been a good idea!    Good crowd.  Good presentation.


On Fri, Mar 15, 2013 at 5:12 PM, Tim Annable <tim at timannable.com> wrote:

The manager at the golden coral just told me I am not allowed to set
up a tent tonight to ensure a good seat tomorrow.  Just an FYI in case
anyone else was planning on camping out to secure a seat for Bob's
presentation.


Sent from my Verizon Wireless 4G LTE Smartphone


-------- Original message --------
From: scomind at aol.com
Date: 03/15/2013  16:50  (GMT-07:00)
To: ncarc at mailman.qth.net
Subject: [NCARC] Meeting Saturday



 All,

The NCARC breakfast meeting is tomorrow, and -- fair warning! -- I'll
be giving the presentation. Crowds of biblical proportions will
attend, no doubt, so get there early to reserve a seat.

It's called "Capacitance, Inductance, and Exaggeration" because we'll
examine the behavior of itty-bitty amounts of capacitance and
inductance under unusual and highly stressful conditions.

A couple of interesting props will be shown. Since we won't actually
fire anything up, no electrons will be harmed in the production of
this presentation.

See you there!

73,

Bob, WA9FBO






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