[Elecraft] Re: Elecraft digest, Vol 4 #205 - 42 msgs

Tue Jun 17 06:07:00 2003

Yes but then we'll have someone telling us that his  VOM measures a lower
voltage on the main circuit board than the built in voltmeter.  It doesn't
matter which way you do it someone will complain....better this way...where
the explanation makes sense.
Gregg R. Lengling, W9DHI, Retired
K2/100 SN 3075
http://www.milwaukeehdtv.org

----- Original Message ----- 
From: "Dave Jewell" <[email protected]>
To: <[email protected]>
Sent: Tuesday, June 17, 2003 4:32 AM
Subject: [Elecraft] Re: Elecraft digest, Vol 4 #205 - 42 msgs

> In-Reply-To: <[email protected]>
> Since the rig was designed with the diode voltage drop in mind, why
> doesn't the firmware simply add the voltage drop to the figure for the
> displayed voltage?  This would be less confusing for folks who notice the
> disparity.  You'd expect the drop to be between 0.6 and 0.7 volts, so
> adding (say) 0.65 to the displayed voltage would be much closer to
> reality.  After all, the rig is supposed to be displaying the *supply*
> voltage, not the internal voltage after the diode drop.
>
> 73, Dave GW0LUA
>
> ------------------------
> Ron, AC7AC said:
>
> > There's a reverse polarity protection diode in the power
> > circuit inside the K2 (D10 on the RF Board schematic).
> > You are seeing the normal forward voltage drop across this diode.
> > Of course, the rig was designed with this drop in mind, so
> > 13.2 is a perfectly "normal" operating voltage reported on
> > the K2 display.
>
> _______________________________________________
> Elecraft mailing list: [email protected]
> You must be a list member to post to the list.
> Postings must be plain text (no HTML or attachments).
> See: http://mailman.qth.net/mailman/listinfo/elecraft
> Elecraft Web Page: http://www.elecraft.com