const-current thing
in [Design]
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From: David Eather on 25 May 2010 21:38 On 26/05/2010 4:07 AM, Jan Panteltje wrote: > On a sunny day (Tue, 25 May 2010 10:28:42 -0700) it happened John Larkin > <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote in > <p22ov5d4ju2fn3pf69ttkvqru1s5aumsqe(a)4ax.com>: > >> >> Most cool: >> >> http://www.onsemi.com/pub/Collateral/NSI45020-D.PDF >> >> I've been wanting constant-current ICs for years. They are finally >> starting to happen. >> >> This is 51 cents, q1. >> >> John > > These dat 20 mA is a bit high for LEDs used as indicator. There is also NSI45010 (and / or NSI50010) > I have some green ones now at 3.3V with 33k (!) in series, > the LEDs drop 2.38 and 2.44 V, so that makes .92 and .86 V over > the resistors, giving a current of about 28 uA, good visibiliy > in bright room light, JUST not blinding when you look directly into it. > ftp://panteltje.com/pub/low_current_LEDs_img_1964.jpg > The blue one is on 10% PWM with 180 Ohm in series on 3.3 V. > That current source product may not sell. > Resistors are cheaper. >
From: Jan Panteltje on 26 May 2010 05:58 On a sunny day (Tue, 25 May 2010 17:49:37 -0700) it happened Joerg <invalid(a)invalid.invalid> wrote in <8639h5FqrgU2(a)mid.individual.net>: >Digikey would not have over 37,000 (as in thousand) of these in stock if >they didn't sell. Duh, if they really sold that good they would be out of stock. Looks like digikey mis-speculated :-) Not only in stock, but stuck in stock. hehe
From: Joerg on 26 May 2010 11:10 Jan Panteltje wrote: > On a sunny day (Tue, 25 May 2010 17:49:37 -0700) it happened Joerg > <invalid(a)invalid.invalid> wrote in <8639h5FqrgU2(a)mid.individual.net>: > >> Digikey would not have over 37,000 (as in thousand) of these in stock if >> they didn't sell. > > Duh, if they really sold that good they would be out of stock. > Looks like digikey mis-speculated :-) > > Not only in stock, but stuck in stock. > hehe You don't know a thing about how serious sales channels work, do you :-) Even Farnell-NL has thousands in stock. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Jan Panteltje on 26 May 2010 11:57 On a sunny day (Wed, 26 May 2010 08:10:06 -0700) it happened Joerg <invalid(a)invalid.invalid> wrote in <864rulFmq1U1(a)mid.individual.net>: >Jan Panteltje wrote: >> On a sunny day (Tue, 25 May 2010 17:49:37 -0700) it happened Joerg >> <invalid(a)invalid.invalid> wrote in <8639h5FqrgU2(a)mid.individual.net>: >> >>> Digikey would not have over 37,000 (as in thousand) of these in stock if >>> they didn't sell. >> >> Duh, if they really sold that good they would be out of stock. >> Looks like digikey mis-speculated :-) >> >> Not only in stock, but stuck in stock. >> hehe > > >You don't know a thing about how serious sales channels work, do you :-) Tell that to Steve Jobs, and the ipad out of stock. > >Even Farnell-NL has thousands in stock. See, stuck everywhere :-)
From: Joerg on 26 May 2010 12:21
Jan Panteltje wrote: > On a sunny day (Wed, 26 May 2010 08:10:06 -0700) it happened Joerg > <invalid(a)invalid.invalid> wrote in <864rulFmq1U1(a)mid.individual.net>: > >> Jan Panteltje wrote: >>> On a sunny day (Tue, 25 May 2010 17:49:37 -0700) it happened Joerg >>> <invalid(a)invalid.invalid> wrote in <8639h5FqrgU2(a)mid.individual.net>: >>> >>>> Digikey would not have over 37,000 (as in thousand) of these in stock if >>>> they didn't sell. >>> Duh, if they really sold that good they would be out of stock. >>> Looks like digikey mis-speculated :-) >>> >>> Not only in stock, but stuck in stock. >>> hehe >> >> You don't know a thing about how serious sales channels work, do you :-) > Tell that to Steve Jobs, and the ipad out of stock. > I could hop into my car right, drive the 10 miles to the next consumer electronics store and buy an iPad, here: http://www.bestbuy.com/site/olspage.jsp;jsessionid=4F8B2850AA3D50BDEF960CABAE68AFDE.bbolsp-app06-22?id=pcat17006&type=page&skuId=9811355&_requestid=820174 Only problem with that is, I don't want one and I don't need one. >> Even Farnell-NL has thousands in stock. > > See, stuck everywhere :-) > Have you asked what the sales numbers are on that device, or just blurted this out? -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM. |