[Elecraft] Anderson Powerpoll connector

Thu Mar 24 18:41:30 EDT 2011

*Hi All,*
*
*
*I am not reading the same voltage drop as Jeff so maybe he is not getting a
correct reading.*
*
*
*Voltage drop on #679 is minimal..)....0.01*
*
*
*The display shows 0.3v from memory @ 100W*
*
*
*73's*
*Gary
*
On 25 March 2011 08:26, Don Wilhelm <w3fpr at embarqmail.com> wrote:

>  Jeff,
>
> Something is wrong - the specification on the contact resistance of the
> APP connectors is 600 microohms.
> At a 20 amp current load, that should only result in a 0.012 volt drop
> across the connector.  Are you certain you are measuring correctly
> (directly across the connector)?  Or are you relying on the K2/K3
> display voltage to determine the drop.  Both have a series diode
> in-line, and the displayed voltage will be less than the power supply
> voltage - not due to the APP connector, but to the series diode.
>
> 73,
> Don W3FPR
>
> On 3/24/2011 6:08 PM, Jeff Cochrane - VK4BOF wrote:
> > I have to admit that I am not a fan of APP's either.
> > I just cannot relate to the voltage drop across the connectors when
> drawing 20+A.
> > On my rig (with its factory built cable) it approaches 1.2 Volt. (And
> yes, the connectors do get warm!)
> > Even with decent cables that I have made using 4mm wire and 45Amp PP
> connectors I still see .6 to .8V drop.
> > That to my mind is not acceptable.
> > So, once the warranty expires on my K3 (in May) I am going to ditch the
> APP's and solder a fly lead of 4mm twin lead wire directly to where the
> APP's were or look at some (better) alternatives.
> >
> >
> > Jeff Cochrane - VK4BOF
> > Elecraft K3 # 4257
> >    ----- Original Message -----
> >    From: Ron D'Eau Claire
> >    To: elecraft at mailman.qth.net
> >    Sent: Friday, March 25, 2011 7:55 AM
> >    Subject: Re: [Elecraft] Anderson Powerpoll connector
> >
> >
> >    At the risk of re-energizing an old debate, I have *never* crimped a
> >    PowerPole connector and have *never* had a problem. All of mine are
> soldered
> >    just as Elecraft recommends if you don't have the correct crimp tool.
> >
> >    In the APP Power Supply Cable Kit instruction sheet is a detailed
> cut-away
> >    drawing of how the APP connector contacts insert into the shell and
> lock for
> >    solid, reliable contact.
> >
> >    Ron AC7AC
> >
> >
> >
> >
> >    -----Original Message-----
> >
> >    I guess my problem is: after reaching a certain age I have developed a
> bag
> >    full of skills, which have served me very well for over a half
> century.
> >    Installing small connectors is a piece of cake, that is until I came
> against
> >    the APP.  Didn't think needed to read the instruction sheet.  After
> all, I
> >    should be able to correctly install this with my bag of knowledge,
> right?
> >    Now that I have achieved a higher level of connector expertise, I
> still
> >    prefer the Molex, but that's me.
> >    Also, something about having to buy a $30 crimper to do the right job
> tends
> >    to rub me in the wrong direction as well.
> >    Thanks for the bandwidth.
> >    BillHarris-w7kxb/7
> >    (long live the KISS principal)
> >
> >    >  From: k6lmp at me.com
> >    >  Date: Thu, 24 Mar 2011 12:31:14 -0700
> >    >  To: elecraft at mailman.qth.net
> >    >  Subject: Re: [Elecraft] Power Shut Down  Resolved!
> >    >
> >    >  When making up APP connectors, you have to be VERY sure that the
> little
> >    lip on the connecting pin (the part that's soldered onto the wire)
> extends
> >    completely into the plastic housing so that it locks itself over the
> metal
> >    part inside the plastic housing.  Viewed from the side it looks
> something
> >    like this:
> >    >
> >    >  =============\
> >    >  ------------- \
> >    >
> >    >  where the double line (string of = signs) represents the connector
> that's
> >    soldered onto the wire, the diagonal slashes represent the lip at the
> end of
> >    that connector, and the single line of dashes represents the metal
> part of
> >    the plastic housing.  If you can pull the wire out, it ain't locked in
> >    place.
> >    >
> >    >  Once I realized this, I have never had a problem with APPs.
> >    >
> >    >
> >    >  Lew K6LMP
> >    >
> >
> >
> >
> >    ______________________________________________________________
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-- 

*VK4FD - Motorhome Mobile
Elecraft Equipment
K3 #679, KPA-500 #018
Living the dream!!!*