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Duracell wireless charger, how does it work?

Started by mike May 14, 2013
I picked up a Duracell wireless charger at a garage sale.
Model CP-PPS.
Also known as MyGrid.
Jentec AH 1815-B
Rated 15V at 1A.

It's NOT inductive.
Has alternating metal stripes that supply power to contacts
on the device adapter.

I have the adapter for the ipad, but no ipad.

Thought I'd reverse engineer it to see if I could do anything
useful.

It puts out a square wave from 1V to 3V with a period of about
2milliseconds with a source impedance around 10K.

If you put a resistive load on it, it just drags down the square
wave.

If you put a diode in series with a load of less than 10K,
It powers up and puts out 15V with a narrow periodic sense pulse to
near ground.

So far, so good.

Problem is that most devices need 5V.  Not sure why they used
15V.

I was gonna put a zener in series and charge my PDA, until I did
the math and decided I'd need to dissipate 10Watts.

The ipad adapter doesn't look like it has any place big enough for
a switching regulator.  I really don't want to tear it apart to
see.

Anybody got insight into how this thing works?

Thanks, mike
On Tue, 14 May 2013 17:07:15 -0700, mike <ham789@netzero.net> wrote:

>I picked up a Duracell wireless charger at a garage sale. >Model CP-PPS. >Also known as MyGrid. >Jentec AH 1815-B >Rated 15V at 1A. > >It's NOT inductive. >Has alternating metal stripes that supply power to contacts >on the device adapter. >
[snip] Huh? That's not wireless if it has "...metal stripes that supply power to contacts on the device adapter". ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
On 5/14/2013 5:37 PM, Jim Thompson wrote:
> On Tue, 14 May 2013 17:07:15 -0700, mike<ham789@netzero.net> wrote: > >> I picked up a Duracell wireless charger at a garage sale. >> Model CP-PPS. >> Also known as MyGrid. >> Jentec AH 1815-B >> Rated 15V at 1A. >> >> It's NOT inductive. >> Has alternating metal stripes that supply power to contacts >> on the device adapter. >> > [snip] > > Huh? That's not wireless if it has "...metal stripes that supply > power to contacts on the device adapter". > > ...Jim Thompson
You need to explain that to the marketing department. I still need to figger out if there's some magic way to get the voltage down to 5V or so.
On Tue, 14 May 2013 19:48:15 -0700, mike <ham789@netzero.net> wrote:

>On 5/14/2013 5:37 PM, Jim Thompson wrote: >> On Tue, 14 May 2013 17:07:15 -0700, mike<ham789@netzero.net> wrote: >> >>> I picked up a Duracell wireless charger at a garage sale. >>> Model CP-PPS. >>> Also known as MyGrid. >>> Jentec AH 1815-B >>> Rated 15V at 1A. >>> >>> It's NOT inductive. >>> Has alternating metal stripes that supply power to contacts >>> on the device adapter. >>> >> [snip] >> >> Huh? That's not wireless if it has "...metal stripes that supply >> power to contacts on the device adapter". >> >> ...Jim Thompson >You need to explain that to the marketing department. > >I still need to figger out if there's some magic way to >get the voltage down to 5V or so.
I'd like to find an ordinary phone... no smart-phone BS... that has inductive charging. My object is to walk in from the garage, drop my cell-phone in a slot, keep walking... it'd inductively charge and also talk to the house desk phones via Bluetooth or WiFi. (I just Oomatized, and ported both home numbers... completing tomorrow. I'll call CenturyLink tomorrow and close my account. I'll now be paying per year what I did pay per month.... for all the bells and whistles :-) ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
On May 14, 8:02=A0pm, Jim Thompson <To-Email-Use-The-Envelope-I...@On-My-
Web-Site.com> wrote:
> On Tue, 14 May 2013 19:48:15 -0700, mike <ham...@netzero.net> wrote: > >On 5/14/2013 5:37 PM, Jim Thompson wrote: > >> On Tue, 14 May 2013 17:07:15 -0700, mike<ham...@netzero.net> =A0wrote: > > >>> I picked up a Duracell wireless charger at a garage sale. > >>> Model CP-PPS. > >>> Also known as MyGrid. > >>> Jentec AH 1815-B > >>> Rated 15V at 1A. > > >>> It's NOT inductive. > >>> Has alternating metal stripes that supply power to contacts > >>> on the device adapter. > > >> [snip] > > >> Huh? =A0That's not wireless if it has "...metal stripes that supply > >> power to contacts on the device adapter". > > >> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0 =A0 =A0 =A0...Jim Thompson
> >You need to explain that to the marketing department. > > >I still need to figger out if there's some magic way to > >get the voltage down to 5V or so. > > I'd like to find an ordinary phone... no smart-phone BS... that has > inductive charging. > > My object is to walk in from the garage, drop my cell-phone in a slot, > keep walking... it'd inductively charge and also talk to the house > desk phones via Bluetooth or WiFi. >
Such phone, by definition, would be "smart". In another word, WiFi phone with VOIP. One of my Android phone is not activated, but for WiFi access only. All i need is a OOMA like VOIP gateway, then i can drop my activated phone.
> (I just Oomatized, and ported both home numbers... completing > tomorrow. =A0I'll call CenturyLink tomorrow and close my account. =A0I'll > now be paying per year what I did pay per month.... for all the bells > and whistles :-)
I bet your kids and grand-kids are paying mobile phone bills per month, what you are paying land-line per year. Such progress intelligently planned (from phone company commercial).
On 5/14/2013 8:02 PM, Jim Thompson wrote:
> On Tue, 14 May 2013 19:48:15 -0700, mike<ham789@netzero.net> wrote: > >> On 5/14/2013 5:37 PM, Jim Thompson wrote: >>> On Tue, 14 May 2013 17:07:15 -0700, mike<ham789@netzero.net> wrote: >>> >>>> I picked up a Duracell wireless charger at a garage sale. >>>> Model CP-PPS. >>>> Also known as MyGrid. >>>> Jentec AH 1815-B >>>> Rated 15V at 1A. >>>> >>>> It's NOT inductive. >>>> Has alternating metal stripes that supply power to contacts >>>> on the device adapter. >>>> >>> [snip] >>> >>> Huh? That's not wireless if it has "...metal stripes that supply >>> power to contacts on the device adapter". >>> >>> ...Jim Thompson >> You need to explain that to the marketing department. >> >> I still need to figger out if there's some magic way to >> get the voltage down to 5V or so. > > I'd like to find an ordinary phone... no smart-phone BS... that has > inductive charging. > > My object is to walk in from the garage, drop my cell-phone in a slot, > keep walking... it'd inductively charge and also talk to the house > desk phones via Bluetooth or WiFi.
If you're willing to drop it in a slot, just wire up some contacts and build a slot. Ordinary wireless phone will do what you want except for the cell part.
> > (I just Oomatized, and ported both home numbers... completing > tomorrow. I'll call CenturyLink tomorrow and close my account. I'll > now be paying per year what I did pay per month.... for all the bells > and whistles :-) > > ...Jim Thompson
I'm in the process of dumping Frontier and using CLEAR for internet. Bought an obi box that gives me free google voice phone. I'd still like to make this charger work for my pda. I can easily fit in the contacts etc, but not much space inside if I have to add a switcher to get the 15V down to 5V for charging.
On 5/14/2013 10:02 PM, Jim Thompson wrote:
> On Tue, 14 May 2013 19:48:15 -0700, mike <ham789@netzero.net> wrote: > >> On 5/14/2013 5:37 PM, Jim Thompson wrote: >>> On Tue, 14 May 2013 17:07:15 -0700, mike<ham789@netzero.net> wrote: >>>
> I'll now be paying per year what I did pay per month.... for all the bells > and whistles :-) > > ...Jim Thompson
Note to accounting, Increase the wine account by the amount saved on phone expenditures. Mikek :-)
On May 14, 8:02=A0pm, Jim Thompson <To-Email-Use-The-Envelope-I...@On-My-
Web-Site.com> wrote:
> On Tue, 14 May 2013 19:48:15 -0700, mike <ham...@netzero.net> wrote: > >On 5/14/2013 5:37 PM, Jim Thompson wrote: > >> On Tue, 14 May 2013 17:07:15 -0700, mike<ham...@netzero.net> =A0wrote: > > >>> I picked up a Duracell wireless charger at a garage sale. > >>> Model CP-PPS. > >>> Also known as MyGrid. > >>> Jentec AH 1815-B > >>> Rated 15V at 1A. > > >>> It's NOT inductive. > >>> Has alternating metal stripes that supply power to contacts > >>> on the device adapter. > > >> [snip] > > >> Huh? =A0That's not wireless if it has "...metal stripes that supply > >> power to contacts on the device adapter". > > >> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0 =A0 =A0 =A0...Jim Thompson
> >You need to explain that to the marketing department. > > >I still need to figger out if there's some magic way to > >get the voltage down to 5V or so. > > I'd like to find an ordinary phone... no smart-phone BS... that has > inductive charging. > > My object is to walk in from the garage, drop my cell-phone in a slot, > keep walking... it'd inductively charge and also talk to the house > desk phones via Bluetooth or WiFi. > > (I just Oomatized, and ported both home numbers... completing > tomorrow. =A0I'll call CenturyLink tomorrow and close my account. =A0I'll > now be paying per year what I did pay per month.... for all the bells > and whistles :-) > > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0 =A0 ...Jim Thompson
> -- > | James E.Thompson =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0 =A0 =A0 | =A0 =A0mens =A0 =A0 |
> | Analog Innovations =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0 =A0 | =A0 =A0 et =A0 =A0 =A0|
> | Analog/Mixed-Signal ASIC's and Discrete Systems =A0| =A0 =A0manus =A0 =
=A0|
> | Phoenix, Arizona =A085048 =A0 =A0Skype: Contacts Only =A0| =A0 =A0 =A0 =
=A0 =A0 =A0 |
> | Voice:(480)460-2350 =A0Fax: Available upon request | =A0Brass Rat =A0| > | E-mail Icon athttp://www.analog-innovations.com| =A0 =A01962 =A0 =A0 | > > I love to cook with wine. =A0 =A0 Sometimes I even put it in the food.
does it have to be open? or, can it just be laid down inside/on a tray? does that work with it still folded, or whatever phones do today? by the way, piece of cake to do the wireless charging, just need a manufacturer open to add to their product line. Did you ask Samsung? They're pretty avant garde in their approaches. I've worked with them before and would like to again.
On Wed, 15 May 2013 09:46:40 -0500, amdx <amdx@knology.net> wrote:

>On 5/14/2013 10:02 PM, Jim Thompson wrote: >> On Tue, 14 May 2013 19:48:15 -0700, mike <ham789@netzero.net> wrote: >> >>> On 5/14/2013 5:37 PM, Jim Thompson wrote: >>>> On Tue, 14 May 2013 17:07:15 -0700, mike<ham789@netzero.net> wrote: >>>> > >> I'll now be paying per year what I did pay per month.... for all the bells >> and whistles :-) >> >> ...Jim Thompson > > Note to accounting, > Increase the wine account by the amount saved on phone expenditures. > > Mikek :-) >
You got it ;-) ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
On Wed, 15 May 2013 07:48:24 -0700 (PDT), Robert Macy
<robert.a.macy@gmail.com> wrote:

>On May 14, 8:02&#2013266080;pm, Jim Thompson <To-Email-Use-The-Envelope-I...@On-My- >Web-Site.com> wrote: >> On Tue, 14 May 2013 19:48:15 -0700, mike <ham...@netzero.net> wrote: >> >On 5/14/2013 5:37 PM, Jim Thompson wrote: >> >> On Tue, 14 May 2013 17:07:15 -0700, mike<ham...@netzero.net> &#2013266080;wrote: >> >> >>> I picked up a Duracell wireless charger at a garage sale. >> >>> Model CP-PPS. >> >>> Also known as MyGrid. >> >>> Jentec AH 1815-B >> >>> Rated 15V at 1A. >> >> >>> It's NOT inductive. >> >>> Has alternating metal stripes that supply power to contacts >> >>> on the device adapter. >> >> >> [snip] >> >> >> Huh? &#2013266080;That's not wireless if it has "...metal stripes that supply >> >> power to contacts on the device adapter". >> >> >> &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080;...Jim Thompson >> >You need to explain that to the marketing department. >> >> >I still need to figger out if there's some magic way to >> >get the voltage down to 5V or so. >> >> I'd like to find an ordinary phone... no smart-phone BS... that has >> inductive charging. >> >> My object is to walk in from the garage, drop my cell-phone in a slot, >> keep walking... it'd inductively charge and also talk to the house >> desk phones via Bluetooth or WiFi. >> >> (I just Oomatized, and ported both home numbers... completing >> tomorrow. &#2013266080;I'll call CenturyLink tomorrow and close my account. &#2013266080;I'll >> now be paying per year what I did pay per month.... for all the bells >> and whistles :-) >> >> &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; ...Jim Thompson >> -- >> | James E.Thompson &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; | &#2013266080; &#2013266080;mens &#2013266080; &#2013266080; | >> | Analog Innovations &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; | &#2013266080; &#2013266080; et &#2013266080; &#2013266080; &#2013266080;| >> | Analog/Mixed-Signal ASIC's and Discrete Systems &#2013266080;| &#2013266080; &#2013266080;manus &#2013266080; &#2013266080;| >> | Phoenix, Arizona &#2013266080;85048 &#2013266080; &#2013266080;Skype: Contacts Only &#2013266080;| &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; &#2013266080; | >> | Voice:(480)460-2350 &#2013266080;Fax: Available upon request | &#2013266080;Brass Rat &#2013266080;| >> | E-mail Icon athttp://www.analog-innovations.com| &#2013266080; &#2013266080;1962 &#2013266080; &#2013266080; | >> >> I love to cook with wine. &#2013266080; &#2013266080; Sometimes I even put it in the food. > >does it have to be open? or, can it just be laid down inside/on a >tray? does that work with it still folded, or whatever phones do >today? > >by the way, piece of cake to do the wireless charging, just need a >manufacturer open to add to their product line. Did you ask Samsung? >They're pretty avant garde in their approaches. I've worked with them >before and would like to again.
I like just a simple phone... I'm of the old school, phones are for talking... this incessant need too surf or tweet or text is NOT my style. So I'm in the minority, no one seems to make an inductively charged talk-only phone :-( ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.