Re: LED anchor lights, another update
OK, OK already! <grin>
I'll post an article in Chebacco when I get the rest of the setup
together. May do one on the entire electrical system.
I'll post an article in Chebacco when I get the rest of the setup
together. May do one on the entire electrical system.
--- In bolger@y..., "Jeff Blunck" <boatbuilding@g...> wrote:
> I agree. Rich, you have started a really good thing with the lights
on this group. I hope it won't be too much trouble to put a short
article together on how they all work. Saving a money is one of the
focuses of this group.
>
> Thanks in advance for your efforts!
>
> Jeff
> ----- Original Message -----
> From: Harry W. James
> To: bolger@y...
> Sent: Thursday, January 31, 2002 10:16 PM
> Subject: Re: [bolger] LED anchor lights, another update
>
>
> I am hoping (and I sure that I am not alone), that you are taking
> pictures and are thinking of putting together a tutorial.
>
> This is the sort of project that is right up this group's alley.
Build
> your own, save money, maybe get a better product than you can
buy. The
> skills are a little unfamiliar to many of us, but with a little
training
> we can light up our lives. I know just enough to follow what you
are
> doing, but not enough to duplicate.
> I eagerly await more.
>
> HJ
>
>
>
>
> [Non-text portions of this message have been removed]
Ditto, and well said, Harry - I too can follow what you're saying, but doing
it would take alot of possibly expensive, and certainly frustrating, trial
and error; please help us learn from your experience!
Paul L.
it would take alot of possibly expensive, and certainly frustrating, trial
and error; please help us learn from your experience!
Paul L.
> -----Original Message-----
> From: Jeff Blunck [mailto:boatbuilding@...]
> Sent: Friday, February 01, 2002 10:50 AM
> To:bolger@yahoogroups.com
> Subject: Re: [bolger] LED anchor lights, another update
>
>
> I agree. Rich, you have started a really good thing with the
> lights on this group. I hope it won't be too much trouble to put
> a short article together on how they all work. Saving a money is
> one of the focuses of this group.
>
> Thanks in advance for your efforts!
>
> Jeff
> ----- Original Message -----
> From: Harry W. James
> To:bolger@yahoogroups.com
> Sent: Thursday, January 31, 2002 10:16 PM
> Subject: Re: [bolger] LED anchor lights, another update
>
>
> I am hoping (and I sure that I am not alone), that you are taking
> pictures and are thinking of putting together a tutorial.
>
> This is the sort of project that is right up this group's alley. Build
> your own, save money, maybe get a better product than you can buy. The
> skills are a little unfamiliar to many of us, but with a little training
> we can light up our lives. I know just enough to follow what you are
> doing, but not enough to duplicate.
> I eagerly await more.
>
> HJ
>
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
> Bolger rules!!!
> - no cursing, flaming, trolling, spamming, or flogging dead horses
> - pls take "personals" off-list, stay on topic, and punctuate
> - add your comments at the TOP and SIGN your posts, snip all you like
> - To order plans: Mr. Philip C. Bolger, P.O. Box 1209,
> Gloucester, MA, 01930, Fax: (978) 282-1349
> - Unsubscribe:bolger-unsubscribe@yahoogroups.com
>
> Your use of Yahoo! Groups is subject tohttp://docs.yahoo.com/info/terms/
>
>
>
I agree. Rich, you have started a really good thing with the lights on this group. I hope it won't be too much trouble to put a short article together on how they all work. Saving a money is one of the focuses of this group.
Thanks in advance for your efforts!
Jeff
Thanks in advance for your efforts!
Jeff
----- Original Message -----
From: Harry W. James
To:bolger@yahoogroups.com
Sent: Thursday, January 31, 2002 10:16 PM
Subject: Re: [bolger] LED anchor lights, another update
I am hoping (and I sure that I am not alone), that you are taking
pictures and are thinking of putting together a tutorial.
This is the sort of project that is right up this group's alley. Build
your own, save money, maybe get a better product than you can buy. The
skills are a little unfamiliar to many of us, but with a little training
we can light up our lives. I know just enough to follow what you are
doing, but not enough to duplicate.
I eagerly await more.
HJ
[Non-text portions of this message have been removed]
I am hoping (and I sure that I am not alone), that you are taking
pictures and are thinking of putting together a tutorial.
This is the sort of project that is right up this group's alley. Build
your own, save money, maybe get a better product than you can buy. The
skills are a little unfamiliar to many of us, but with a little training
we can light up our lives. I know just enough to follow what you are
doing, but not enough to duplicate.
I eagerly await more.
HJ
rlspell2000 wrote:
pictures and are thinking of putting together a tutorial.
This is the sort of project that is right up this group's alley. Build
your own, save money, maybe get a better product than you can buy. The
skills are a little unfamiliar to many of us, but with a little training
we can light up our lives. I know just enough to follow what you are
doing, but not enough to duplicate.
I eagerly await more.
HJ
rlspell2000 wrote:
>
> Well after burning out three more LED's, and banging my head up
> against getting a LM317 regulator to not drop output voltage when
> load is applied, I finaly broke down and went crazy. I decided I
> needed to supply 3.6-4v to each LED array, giving each one the same
> power level.
>
> I bought this:
>http://www.national.com/store/view_item/?nsid=LM2593HVEVAL
>
> It is an efficient switching regulator, rated at 2 amps. Replaced one
> resistor (with magnifing headpiece, needle nose tweezers, soldering
> iron ground to a point. Ain't surface mount technology fun?!) with a
> 10k one I scavenged out of my old PC parts bin.
>
> And, PRESTO! 3.813 volts, efficently regulated!
>
> Doing a burn in test now, bought Perko series 25 fixtures and some
> small pc boards. Will have working lights in a day or two!
>
>
The LM317 can be setup as a variable voltage source, but as I said in
my post it was dropping voltage when a load was applied.
Also, I could control the current through one, but not through
multiple led's, the number of which would vary depending upon which
lights I had on.
Also, the switching regulator I modified is about 85% efficient, so
less energy is wasted in heat.
my post it was dropping voltage when a load was applied.
Also, I could control the current through one, but not through
multiple led's, the number of which would vary depending upon which
lights I had on.
Also, the switching regulator I modified is about 85% efficient, so
less energy is wasted in heat.
--- In bolger@y..., "tom28571" <harbinger@c...> wrote:
>
>
> The voltage regulator chip someone (maybe you) mentioned earlier
can
> be set up as a current regulator by placing a resistor on two
> terminals. This leads to the obvious scheme of putting in a
variable
> resistor which could be used as a dimmer, probably in series with a
> fixed resistor to control max current. Since controlling current
> through the LED is what is wanted, why not do it directly?
>
> Tom
>
>
> In bolger@y..., "rlspell2000" <richard@s...> wrote:
> > Well after burning out three more LED's, and banging my head up
> > against getting a LM317 regulator to not drop output voltage when
> > load is applied, I finaly broke down and went crazy. I decided I
> > needed to supply 3.6-4v to each LED array, giving each one the
same
> > power level.
> >
> > I bought this:
> >http://www.national.com/store/view_item/?nsid=LM2593HVEVAL
> >
> > It is an efficient switching regulator, rated at 2 amps. Replaced
> one
> > resistor (with magnifing headpiece, needle nose tweezers,
soldering
> > iron ground to a point. Ain't surface mount technology fun?!)
with
> a
> > 10k one I scavenged out of my old PC parts bin.
> >
> > And, PRESTO! 3.813 volts, efficently regulated!
> >
> > Doing a burn in test now, bought Perko series 25 fixtures and
some
> > small pc boards. Will have working lights in a day or two!
The voltage regulator chip someone (maybe you) mentioned earlier can
be set up as a current regulator by placing a resistor on two
terminals. This leads to the obvious scheme of putting in a variable
resistor which could be used as a dimmer, probably in series with a
fixed resistor to control max current. Since controlling current
through the LED is what is wanted, why not do it directly?
Tom
In bolger@y..., "rlspell2000" <richard@s...> wrote:
be set up as a current regulator by placing a resistor on two
terminals. This leads to the obvious scheme of putting in a variable
resistor which could be used as a dimmer, probably in series with a
fixed resistor to control max current. Since controlling current
through the LED is what is wanted, why not do it directly?
Tom
In bolger@y..., "rlspell2000" <richard@s...> wrote:
> Well after burning out three more LED's, and banging my head upone
> against getting a LM317 regulator to not drop output voltage when
> load is applied, I finaly broke down and went crazy. I decided I
> needed to supply 3.6-4v to each LED array, giving each one the same
> power level.
>
> I bought this:
>http://www.national.com/store/view_item/?nsid=LM2593HVEVAL
>
> It is an efficient switching regulator, rated at 2 amps. Replaced
> resistor (with magnifing headpiece, needle nose tweezers, solderinga
> iron ground to a point. Ain't surface mount technology fun?!) with
> 10k one I scavenged out of my old PC parts bin.
>
> And, PRESTO! 3.813 volts, efficently regulated!
>
> Doing a burn in test now, bought Perko series 25 fixtures and some
> small pc boards. Will have working lights in a day or two!
Well after burning out three more LED's, and banging my head up
against getting a LM317 regulator to not drop output voltage when
load is applied, I finaly broke down and went crazy. I decided I
needed to supply 3.6-4v to each LED array, giving each one the same
power level.
I bought this:
http://www.national.com/store/view_item/?nsid=LM2593HVEVAL
It is an efficient switching regulator, rated at 2 amps. Replaced one
resistor (with magnifing headpiece, needle nose tweezers, soldering
iron ground to a point. Ain't surface mount technology fun?!) with a
10k one I scavenged out of my old PC parts bin.
And, PRESTO! 3.813 volts, efficently regulated!
Doing a burn in test now, bought Perko series 25 fixtures and some
small pc boards. Will have working lights in a day or two!
against getting a LM317 regulator to not drop output voltage when
load is applied, I finaly broke down and went crazy. I decided I
needed to supply 3.6-4v to each LED array, giving each one the same
power level.
I bought this:
http://www.national.com/store/view_item/?nsid=LM2593HVEVAL
It is an efficient switching regulator, rated at 2 amps. Replaced one
resistor (with magnifing headpiece, needle nose tweezers, soldering
iron ground to a point. Ain't surface mount technology fun?!) with a
10k one I scavenged out of my old PC parts bin.
And, PRESTO! 3.813 volts, efficently regulated!
Doing a burn in test now, bought Perko series 25 fixtures and some
small pc boards. Will have working lights in a day or two!