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Quiescent current drain K3

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bobatbay

Quiescent current drain K3

Hi
Has anyone measured the current drain on their K3 when it is
Off ?

I have measured 7mA.

Is this typical ?

Bob ZD8RH
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M0XDF

Re: Quiescent current drain K3

21mA

On 11/2/08 11:35, "[hidden email]" <[hidden email]> sent:

> Hi
> Has anyone measured the current drain on their K3 when it is
> Off ?
>
> I have measured 7mA.
>
> Is this typical ?
>
>
> Bob ZD8RH
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
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David Pratt-2

Re: Quiescent current drain K3

In reply to this post by bobatbay

ZD8RH de G4DMP
In a recent message, [hidden email] wrote ...
>Has anyone measured the current drain on their K3 when it is
>Off ?
>
>I have measured 7mA.
>
>Is this typical ?

The stand-by current of the K3 varies considerably depending on how long
the power has been disconnected before the measurement is made.

I measured the current of my K3 after the power had been disconnected
for about six hours and the current was 15mA as measured on a good
quality moving-coil (d'Arsonval) type of meter. Having used my K3 and
then switched off, the current was 65mA and then reduced slowly.

I can only assume that the variation is due to internal circuits
(capacitors, etc) being recharged after the POWER button switches the K3
off.

73
--
David G4DMP/G3KEP
Leeds, UK
------

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Brett Howard

RE: Quiescent current drain K3

In reply to this post by M0XDF

Looks like the power switch is just a button from the 12V that is divided
and dumped into one of the main PIC's so you're going to have the pic at
least partially awake to be able to respond to that... That's going to
require a bit of sipping on the rail.

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of David Ferrington,
M0XDF
Sent: Monday, February 11, 2008 4:47 AM
To: [hidden email]; Crafters
Subject: Re: [Elecraft] Quiescent current drain K3

21mA

On 11/2/08 11:35, "[hidden email]" <[hidden email]> sent:

--
Either that wallpaper goes, or I do. - last words of Oscar Wild

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Ian Stirling, G4ICV, AB2GR

Re: Quiescent current drain K3

On Monday 11 February 2008 05:33:09 pm Brett Howard wrote:

> Looks like the power switch is just a button from the 12V that is divided
> and dumped into one of the main PIC's so you're going to have the pic at
> least partially awake to be able to respond to that... That's going to
> require a bit of sipping on the rail.

Groan,

Not a real power switch.
That's the way of everything these days it seems.
Back in 2001, I made a mechanical rotary to linear, FCC
part 15 radio controlled remote button pusher for my wife's
coffee maker because that blasted machine didn't have a real
power switch: had it, I could have just used an off-the-shelf
mains remote switch, moot now, because she has an esspresso
maker - coffee on demand. Every so often, I have a cup.
What were they thinking? Long live the K2.

Ian, G4ICV, AB2GR, K2 #4962
--
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AJSOENKE

Re: Quiescent current drain K3

In reply to this post by bobatbay

In a message dated 2/11/2008 3:35:46 A.M. Pacific Standard Time,
[hidden email] writes:
Hi
Has anyone measured the current drain on their K3 when it is
Off ?

I have measured 7mA.

Is this typical ?

Bob ZD8RH
_______________________________________________

It's probably a moot point anyway, at least in 6 land. The loonies inn Sacto
are now promoting the power utilities having remote wired control of all
your home electronics systems so they can kill your power if you need to cool
off on a hot day or keep your clock in the microwave running. Maybe most of
you are old enough to remember how they were so anxious to ram the "all
electric" home down our throats - man what a dismall failure that was. Now it's
ethanol with 1/30th the efficiency of gasoline (at the same price?). Since I'm
into farming, I can tell you what it's going to do to the price of food from LA
taco shells to Brazilian Beef.

Oh well - pardon my rant for the month! back to my all solar station work.

Al WA6VNN

**************The year's hottest artists on the red carpet at the Grammy
Awards. Go to AOL Music.
(http://music.aol.com/grammys?NCID=aolcmp00300000002565)
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