On Fri, 24 Apr 2020 02:20:53 -0700 (PDT), Phil Allison <pallison49@gmail.com> wrote:> habib wrote: > >============ > >> >> >> >> Are you sure ? LED is not a silicon based component so I'm not >>> sure they> have the same tempco. >> >> >> > >> > >> > **FYI: >> > >> > Silver, copper, gold, aluminium, magnesium, tungsten, zinc, nickel, tin, iron, platinum, mild steel, lead plus some alloys ALL have the same positive tempco of resistance. > >> > >> > Close to .004% per C. >>> >> Sure although it is not "%" in that case. > >** Pedant. > >> >> Anyway we did not speak about metals, > > >** Yes we did and I mentioned alloys. > >Anyhow the fact is YOU are 100% WRONG !! > >FOAD > > >..... PhilLTDM (learn to do math) -- John Larkin Highland Technology, Inc Science teaches us to doubt. Claude Bernard
LED forward voltage drop with temperature
Started by ●April 22, 2020
Reply by ●April 24, 20202020-04-24
Reply by ●April 24, 20202020-04-24
Le 24/04/2020 à 16:47, Phil Allison a écrit :> Jeroen Belleman wrote: > > ======================= >> >>> >>>>>> >>>>>> Are you sure ? LED is not a silicon based component so I'm not >>>>> sure they> have the same tempco. >>>>>> >>>>> >>>>> >>>>> **FYI: >>>>> >>>>> Silver, copper, gold, aluminium, magnesium, tungsten, zinc, nickel, tin, iron, platinum, mild steel, lead plus some alloys ALL have the same positive tempco of resistance. >>> >>>>> >>>>> Close to .004% per C. >>>>> >>>> Sure although it is not "%" in that case. >>> >>> ** Pedant. >> >> Pointing out a factor of hundred error > > > ** Only a pedant would bother. > > Someone like you.Only "Allison-100%-wrong", allows himself speaking before thinking! I suspect the Allison did not really understand what % really mean.> > > .... Phil > > >
Reply by ●April 24, 20202020-04-24
On Fri, 24 Apr 2020 17:35:36 +0200, habib <h.bouazizviallet@free.fr> wrote:>Le 24/04/2020 � 16:47, Phil Allison a �crit�: >> Jeroen Belleman wrote: >> >> ======================= >>> >>>> >>>>>>> >>>>>>> Are you sure ? LED is not a silicon based component so I'm not >>>>>> sure they> have the same tempco. >>>>>>> >>>>>> >>>>>> >>>>>> **FYI: >>>>>> >>>>>> Silver, copper, gold, aluminium, magnesium, tungsten, zinc, nickel, tin, iron, platinum, mild steel, lead plus some alloys ALL have the same positive tempco of resistance. >>>> >>>>>> >>>>>> Close to .004% per C. >>>>>> >>>>> Sure although it is not "%" in that case. >>>> >>>> ** Pedant. >>> >>> Pointing out a factor of hundred error >> >> >> ** Only a pedant would bother. >> >> Someone like you. >Only "Allison-100%-wrong", allows himself speaking before thinking! I >suspect the Allison did not really understand what % really mean.But he wasn't 100% wrong. He was 10,000% wrong. -- John Larkin Highland Technology, Inc Science teaches us to doubt. Claude Bernard
Reply by ●April 24, 20202020-04-24
jlarkin@highlandsniptechnology.com wrote in news:uu16afl44dgoojsqsbq22d0ogra2kq5drp@4ax.com:> > But he wasn't 100% wrong. He was 10,000% wrong. > >I was sure you were referring to Trump and his family of fuckups.
Reply by ●April 24, 20202020-04-24
Le 24/04/2020 à 17:40, jlarkin@highlandsniptechnology.com a écrit :> On Fri, 24 Apr 2020 17:35:36 +0200, habib <h.bouazizviallet@free.fr> > wrote: > >> Le 24/04/2020 à 16:47, Phil Allison a écrit : >>> Jeroen Belleman wrote: >>> >>> ======================= >>>> >>>>> >>>>>>>> >>>>>>>> Are you sure ? LED is not a silicon based component so I'm not >>>>>>> sure they> have the same tempco. >>>>>>>> >>>>>>> >>>>>>> >>>>>>> **FYI: >>>>>>> >>>>>>> Silver, copper, gold, aluminium, magnesium, tungsten, zinc, nickel, tin, iron, platinum, mild steel, lead plus some alloys ALL have the same positive tempco of resistance. >>>>> >>>>>>> >>>>>>> Close to .004% per C. >>>>>>> >>>>>> Sure although it is not "%" in that case. >>>>> >>>>> ** Pedant. >>>> >>>> Pointing out a factor of hundred error >>> >>> >>> ** Only a pedant would bother. >>> >>> Someone like you. >> Only "Allison-100%-wrong", allows himself speaking before thinking! I >> suspect the Allison did not really understand what % really mean. > > > But he wasn't 100% wrong. He was 10,000% wrong."Allison Coeff" --> 0.004% gives a coeff = 0.00004; 4.10-5 TC metals (Physics) = (approx.) 0.004; 4.10-3 An error magnitude of 100 between "Allison" and real Physics. H> > >H
Reply by ●April 24, 20202020-04-24
On Fri, 24 Apr 2020 18:16:14 +0200, habib <h.bouazizviallet@free.fr> wrote:>Le 24/04/2020 � 17:40, jlarkin@highlandsniptechnology.com a �crit�: >> On Fri, 24 Apr 2020 17:35:36 +0200, habib <h.bouazizviallet@free.fr> >> wrote: >> >>> Le 24/04/2020 � 16:47, Phil Allison a �crit�: >>>> Jeroen Belleman wrote: >>>> >>>> ======================= >>>>> >>>>>> >>>>>>>>> >>>>>>>>> Are you sure ? LED is not a silicon based component so I'm not >>>>>>>> sure they> have the same tempco. >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> **FYI: >>>>>>>> >>>>>>>> Silver, copper, gold, aluminium, magnesium, tungsten, zinc, nickel, tin, iron, platinum, mild steel, lead plus some alloys ALL have the same positive tempco of resistance. >>>>>> >>>>>>>> >>>>>>>> Close to .004% per C. >>>>>>>> >>>>>>> Sure although it is not "%" in that case. >>>>>> >>>>>> ** Pedant. >>>>> >>>>> Pointing out a factor of hundred error >>>> >>>> >>>> ** Only a pedant would bother. >>>> >>>> Someone like you. >>> Only "Allison-100%-wrong", allows himself speaking before thinking! I >>> suspect the Allison did not really understand what % really mean. >> >> >> But he wasn't 100% wrong. He was 10,000% wrong. > >"Allison Coeff" --> 0.004% gives a coeff = 0.00004; 4.10-5 > >TC metals (Physics) = (approx.) 0.004; 4.10-3 > >An error magnitude of 100 between "Allison" and real Physics. >We need a new SI unit of wrongness, Allisons. We can't apply that to the linux guy, since he is Always Wrong. Obscure note: electrons conduct heat and electricity, which track. So most metals and alloys are about 150,000 K/W per ohm. I suppose then that thermal conductivity should have the same temperature coefficient as electrical conductivity. What's the thermal conductivity of a superconductor? -- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
Reply by ●April 24, 20202020-04-24
Le 24/04/2020 à 19:35, John Larkin a écrit :> On Fri, 24 Apr 2020 18:16:14 +0200, habib <h.bouazizviallet@free.fr> > wrote: > >> Le 24/04/2020 à 17:40, jlarkin@highlandsniptechnology.com a écrit : >>> On Fri, 24 Apr 2020 17:35:36 +0200, habib <h.bouazizviallet@free.fr> >>> wrote: >>> >>>> Le 24/04/2020 à 16:47, Phil Allison a écrit : >>>>> Jeroen Belleman wrote: >>>>> >>>>> ======================= >>>>>> >>>>>>> >>>>>>>>>> >>>>>>>>>> Are you sure ? LED is not a silicon based component so I'm not >>>>>>>>> sure they> have the same tempco. >>>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> **FYI: >>>>>>>>> >>>>>>>>> Silver, copper, gold, aluminium, magnesium, tungsten, zinc, nickel, tin, iron, platinum, mild steel, lead plus some alloys ALL have the same positive tempco of resistance. >>>>>>> >>>>>>>>> >>>>>>>>> Close to .004% per C. >>>>>>>>> >>>>>>>> Sure although it is not "%" in that case. >>>>>>> >>>>>>> ** Pedant. >>>>>> >>>>>> Pointing out a factor of hundred error >>>>> >>>>> >>>>> ** Only a pedant would bother. >>>>> >>>>> Someone like you. >>>> Only "Allison-100%-wrong", allows himself speaking before thinking! I >>>> suspect the Allison did not really understand what % really mean. >>> >>> >>> But he wasn't 100% wrong. He was 10,000% wrong. >> >> "Allison Coeff" --> 0.004% gives a coeff = 0.00004; 4.10-5 >> >> TC metals (Physics) = (approx.) 0.004; 4.10-3 >> >> An error magnitude of 100 between "Allison" and real Physics. >> > > We need a new SI unit of wrongness, Allisons. We can't apply that to > the linux guy, since he is Always Wrong.from now we will name it so, Allison's SI> > Obscure note: electrons conduct heat and electricity, which track. So > most metals and alloys are about 150,000 K/W per ohm.Thermal resistivity 150 000 °K/W for a Allison metal, this make sense with Allison's SI> > I suppose then that thermal conductivity should have the same > temperature coefficient as electrical conductivity. > > What's the thermal conductivity of a superconductor?I guess W/K.m is about 10e5 or 10e15 or something like that for a supra conductor material, Sure that Allison has another figure based on own SI ? H>
Reply by ●April 24, 20202020-04-24
On Friday, April 24, 2020 at 1:35:41 PM UTC-4, John Larkin wrote:> On Fri, 24 Apr 2020 18:16:14 +0200, habib <h.bouazizviallet@free.fr> > wrote: > > >Le 24/04/2020 à 17:40, jlarkin@highlandsniptechnology.com a écrit : > >> On Fri, 24 Apr 2020 17:35:36 +0200, habib <h.bouazizviallet@free.fr> > >> wrote: > >> > >>> Le 24/04/2020 à 16:47, Phil Allison a écrit : > >>>> Jeroen Belleman wrote: > >>>> > >>>> ======================= > >>>>> > >>>>>> > >>>>>>>>> > >>>>>>>>> Are you sure ? LED is not a silicon based component so I'm not > >>>>>>>> sure they> have the same tempco. > >>>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>>> **FYI: > >>>>>>>> > >>>>>>>> Silver, copper, gold, aluminium, magnesium, tungsten, zinc, nickel, tin, iron, platinum, mild steel, lead plus some alloys ALL have the same positive tempco of resistance. > >>>>>> > >>>>>>>> > >>>>>>>> Close to .004% per C. > >>>>>>>> > >>>>>>> Sure although it is not "%" in that case. > >>>>>> > >>>>>> ** Pedant. > >>>>> > >>>>> Pointing out a factor of hundred error > >>>> > >>>> > >>>> ** Only a pedant would bother. > >>>> > >>>> Someone like you. > >>> Only "Allison-100%-wrong", allows himself speaking before thinking! I > >>> suspect the Allison did not really understand what % really mean. > >> > >> > >> But he wasn't 100% wrong. He was 10,000% wrong. > > > >"Allison Coeff" --> 0.004% gives a coeff = 0.00004; 4.10-5 > > > >TC metals (Physics) = (approx.) 0.004; 4.10-3 > > > >An error magnitude of 100 between "Allison" and real Physics. > > > > We need a new SI unit of wrongness, Allisons. We can't apply that to > the linux guy, since he is Always Wrong. > > Obscure note: electrons conduct heat and electricity, which track. So > most metals and alloys are about 150,000 K/W per ohm. > > I suppose then that thermal conductivity should have the same > temperature coefficient as electrical conductivity. > > What's the thermal conductivity of a superconductor?Whoever came up with a name for water wasn't a fish. Superconductors don't ask questions about conductivity. Superfluids have no thermal resistance and so ask no questions about the flow of heat. If people were superfluid to determine if I had a fever you would take your own temperature. -- Rick C. - Get 1,000 miles of free Supercharging - Tesla referral code - https://ts.la/richard11209
Reply by ●April 24, 20202020-04-24
On 4/24/2020 1:35 PM, John Larkin wrote:> On Fri, 24 Apr 2020 18:16:14 +0200, habib <h.bouazizviallet@free.fr> > wrote: > >> Le 24/04/2020 à 17:40, jlarkin@highlandsniptechnology.com a écrit : >>> On Fri, 24 Apr 2020 17:35:36 +0200, habib <h.bouazizviallet@free.fr> >>> wrote: >>> >>>> Le 24/04/2020 à 16:47, Phil Allison a écrit : >>>>> Jeroen Belleman wrote: >>>>> >>>>> ======================= >>>>>> >>>>>>> >>>>>>>>>> >>>>>>>>>> Are you sure ? LED is not a silicon based component so I'm not >>>>>>>>> sure they> have the same tempco. >>>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> **FYI: >>>>>>>>> >>>>>>>>> Silver, copper, gold, aluminium, magnesium, tungsten, zinc, nickel, tin, iron, platinum, mild steel, lead plus some alloys ALL have the same positive tempco of resistance. >>>>>>> >>>>>>>>> >>>>>>>>> Close to .004% per C. >>>>>>>>> >>>>>>>> Sure although it is not "%" in that case. >>>>>>> >>>>>>> ** Pedant. >>>>>> >>>>>> Pointing out a factor of hundred error >>>>> >>>>> >>>>> ** Only a pedant would bother. >>>>> >>>>> Someone like you. >>>> Only "Allison-100%-wrong", allows himself speaking before thinking! I >>>> suspect the Allison did not really understand what % really mean. >>> >>> >>> But he wasn't 100% wrong. He was 10,000% wrong. >> >> "Allison Coeff" --> 0.004% gives a coeff = 0.00004; 4.10-5 >> >> TC metals (Physics) = (approx.) 0.004; 4.10-3 >> >> An error magnitude of 100 between "Allison" and real Physics. >> > > We need a new SI unit of wrongness, Allisons. We can't apply that to > the linux guy, since he is Always Wrong. > > Obscure note: electrons conduct heat and electricity, which track. So > most metals and alloys are about 150,000 K/W per ohm. > > I suppose then that thermal conductivity should have the same > temperature coefficient as electrical conductivity. > > What's the thermal conductivity of a superconductor? >Low-temperature metallic superconductors are lousy thermal conductors; Pauli exclusion principle, almost all of the lower-energy states are filled and there aren't many empty states between kT and the energy gap for the higher energy ones to move into, either.
Reply by ●April 24, 20202020-04-24
On 4/24/2020 5:08 PM, bitrex wrote:> On 4/24/2020 1:35 PM, John Larkin wrote: >> On Fri, 24 Apr 2020 18:16:14 +0200, habib <h.bouazizviallet@free.fr> >> wrote: >> >>> Le 24/04/2020 à 17:40, jlarkin@highlandsniptechnology.com a écrit : >>>> On Fri, 24 Apr 2020 17:35:36 +0200, habib <h.bouazizviallet@free.fr> >>>> wrote: >>>> >>>>> Le 24/04/2020 à 16:47, Phil Allison a écrit : >>>>>> Jeroen Belleman wrote: >>>>>> >>>>>> ======================= >>>>>>> >>>>>>>> >>>>>>>>>>> >>>>>>>>>>> Are you sure ? LED is not a silicon based component so I'm not >>>>>>>>>> sure they> have the same tempco. >>>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> **FYI: >>>>>>>>>> >>>>>>>>>> Silver, copper, gold, aluminium, magnesium, tungsten, >>>>>>>>>> zinc, nickel, tin, iron, platinum, mild steel, lead plus some >>>>>>>>>> alloys ALL have the same positive tempco of resistance. >>>>>>>> >>>>>>>>>> >>>>>>>>>> Close to .004% per C. >>>>>>>>>> >>>>>>>>> Sure although it is not "%" in that case. >>>>>>>> >>>>>>>> ** Pedant. >>>>>>> >>>>>>> Pointing out a factor of hundred error >>>>>> >>>>>> >>>>>> ** Only a pedant would bother. >>>>>> Someone like you. >>>>> Only "Allison-100%-wrong", allows himself speaking before thinking! I >>>>> suspect the Allison did not really understand what % really mean. >>>> >>>> >>>> But he wasn't 100% wrong. He was 10,000% wrong. >>> >>> "Allison Coeff" --> 0.004% gives a coeff = 0.00004; 4.10-5 >>> >>> TC metals (Physics) = (approx.) 0.004; 4.10-3 >>> >>> An error magnitude of 100 between "Allison" and real Physics. >>> >> >> We need a new SI unit of wrongness, Allisons. We can't apply that to >> the linux guy, since he is Always Wrong. >> >> Obscure note: electrons conduct heat and electricity, which track. So >> most metals and alloys are about 150,000 K/W per ohm. >> >> I suppose then that thermal conductivity should have the same >> temperature coefficient as electrical conductivity. >> >> What's the thermal conductivity of a superconductor? >> > > Low-temperature metallic superconductors are lousy thermal conductors; > Pauli exclusion principle, almost all of the lower-energy states are > filled and there aren't many empty states between kT and the energy gap > for the higher energy ones to move into, either.If the electrons are all bound up then thermal conduction can only be thru the lattice phonons but that's an order of magnitude less strong an effect than electron conduction in most metals.
