Re: [EVDL] Negative visibility> humans not plugging in Tesla PD chase EV

2019-10-05 Thread Peter C. Thompson via EV
On 10/5/19 1:41 PM, Jan Steinman via EV wrote: From: Lee Hart "wireless charging" is fundamentally just a transformer. With an extremely lossy core! It's been decades since I worked in RF engineering, but they don't change the laws of physics very often. Electromagnetic coupling between

Re: [EVDL] Negative visibility> humans not plugging in Tesla PD chase EV

2019-10-05 Thread Jan Steinman via EV
> From: Lee Hart > > "wireless charging" is fundamentally just a transformer. With an extremely lossy core! It's been decades since I worked in RF engineering, but they don't change the laws of physics very often. Electromagnetic coupling between two coils depends on the frequency of the

Re: [EVDL] Negative visibility> humans not plugging in Tesla PD chase EV

2019-10-04 Thread Lee Hart via EV
Peter C. Thompson wrote: They have chargers that can operate up to 11 kW, and effeciencies around 92 to 93%. If I remember correctly, BMW is using this charger for some high-end EVs. Not sure who Daimler is going with. I would like to see some independent confirmation of this. 92-93% is

Re: [EVDL] Negative visibility> humans not plugging in Tesla PD chase EV

2019-10-04 Thread Mark Abramowitz via EV
Very impressive! Is that 92-93% as efficient as wired chargers.(Sorry, I’m just not up on efficiency numbers). - Mark Sent from my Fuel Cell powered iPhone > On Oct 4, 2019, at 9:05 AM, Peter C. Thompson wrote: > > They have chargers that can operate up to 11 kW, and effeciencies around 92

Re: [EVDL] Negative visibility> humans not plugging in Tesla PD chase EV

2019-10-04 Thread Peter C. Thompson via EV
They have chargers that can operate up to 11 kW, and effeciencies around 92 to 93%.  If I remember correctly, BMW is using this charger for some high-end EVs. Not sure who Daimler is going with. Cheers! On 10/3/19 5:38 PM, Mark Abramowitz wrote: Is charging wirelessly less efficient or take

Re: [EVDL] Negative visibility> humans not plugging in Tesla PD chase EV

2019-10-03 Thread Mark Abramowitz via EV
Is charging wirelessly less efficient or take more time? - Mark Sent from my Fuel Cell powered iPhone > On Oct 3, 2019, at 2:59 PM, Peter C. Thompson via EV > wrote: > > For other devices that charge wirelessly, check out Witricity.com. I used to > work for a competitor of theirs > >

Re: [EVDL] Negative visibility> humans not plugging in Tesla PD chase EV

2019-10-03 Thread Peter C. Thompson via EV
For other devices that charge wirelessly, check out Witricity.com.  I used to work for a competitor of theirs Cheers, Peter On 10/3/19 11:57 AM, brucedp5 via EV wrote: Last Tuesday when I swung by to check-out the new San Antonio SuperEVSE ...

[EVDL] Negative visibility> humans not plugging in Tesla PD chase EV

2019-10-03 Thread brucedp5 via EV
Last Tuesday when I swung by to check-out the new San Antonio SuperEVSE ... http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVangel-about-San-Antonio-TX-Tesla-Supercharger-site-Watt-me-worry-tp4695295.html EVangel-about: San_Antonio-TX Tesla Supercharger site ... (Watt-me-worry)