Re: [EVDL] led t8 powered by dc battery
On 15 Oct 2018 at 0:26, ken via EV wrote: > I and i'm sure others would to take led t8 bulbs form like HD and wire > htem directly to the dc, led strip inside, without even having to deal > with the 120 volt ac stuff... I don't see what this has to do with EVs. But that aside, I'd expect that the internal LED chips would all be wired in series or series-parallel to get closer to rectified mains voltage. That minimizes the power supply circuitry required (and thus the cost). Such a unit would most likely need more than 12v unless you did major surgery on it. David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to "evpost" and "etpost" addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/ . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] led t8 powered by dc battery
LED TL bulbs that I have seen have a high voltage series connection of LEDs. Either ~24 LEDs in series for about 90VDC of supply and several series strings connected in parallel, Or a single string and a high voltage inverter (special ballast) required. You would need to cut and somehow connect to the traces on the LED PCB in shorter series in order to run directly off 12V. Oh and of course arrange for current control, else you are likely to blow LEDs when you freshly charged your battery. Regards, Cor. Sent from Mail for Windows 10 From: ken via EV Sent: Sunday, October 14, 2018 10:26 PM To: Electric Vehicle Discussion List Cc: ken Subject: [EVDL] led t8 powered by dc battery I and i'm sure others would to take led t8 bulbs form like HD and wire htem directly to the dc, led strip inside, without even having to deal with the 120 volt ac stuff, ballests, fixtures, invertors, etc.. just buy the 4 ft bulb, break open the end, find the right place to solder on the wires and use a 12 volt battery, or some old cells like leaf, calb, or lituium and do the right combination for voltage etc to power theses or get some kind of voltage controller to adjust. then just hang the bulb on the ceiling or what ever. I know you can buy led strips on reels, etc but thats messier. keep it simple, save power, reuse old cells. ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20181014/963a5253/attachment.html> ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
[EVDL] led t8 powered by dc battery
I and i'm sure others would to take led t8 bulbs form like HD and wire htem directly to the dc, led strip inside, without even having to deal with the 120 volt ac stuff, ballests, fixtures, invertors, etc.. just buy the 4 ft bulb, break open the end, find the right place to solder on the wires and use a 12 volt battery, or some old cells like leaf, calb, or lituium and do the right combination for voltage etc to power theses or get some kind of voltage controller to adjust. then just hang the bulb on the ceiling or what ever. I know you can buy led strips on reels, etc but thats messier. keep it simple, save power, reuse old cells. ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
