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slide[_2_] March 29th 09 11:15 PM

A reminder
 
Larry wrote:


That t-shirt is STILL there, just to make sure....(c;


Time you got over it.

Jeff March 30th 09 12:42 AM

A reminder
 
Justin C wrote:
In article , cavelamb wrote:
Larry wrote:
Gordon wrote in
m:

What does a man need - really need? A few pounds of
food each day, heat and shelter, six feet to lie down in - and some form
of working activity that will yield a sense of accomplishment. That's
all - in the material sense, and we know it.
Catalina 22?

something with a real keel!


If it was just me (and not my wife too), I'd have a Folkboat - and I
wouldn't be here!

Justin.

I've spent a fair amount of time in a wooden Folkboat. It was one of
the least comfortable I've sailed. I didn't mind too much, but the
owner's wife got seasick thinking about it (which is why I got so much
time in it). I'll admit they have a good passage record for a 26
footer, but its not a boat I could "take off" in. But, give me a
Nonsuch 26 and no ties ...

Gordon March 30th 09 01:08 AM

A reminder
 
Justin C wrote:
In article , Larry wrote:
Justin C wrote in
:

In article , cavelamb
wrote:
Larry wrote:
Gordon wrote in
m:

What does a man need - really need? A few pounds of
food each day, heat and shelter, six feet to lie down in - and some
form of working activity that will yield a sense of accomplishment.
That's all - in the material sense, and we know it.
Catalina 22?
something with a real keel!
If it was just me (and not my wife too), I'd have a Folkboat - and I
wouldn't be here!

Justin.

Dump her! The docks are full of cooperative females to breed...(c;]


No! You got (possibly) the wrong end of the stick. The wife wants to
come along too, it's just that a Folkboat is too small for two!

.... hmmm, or are you suggesting I go with out her and find a woman in
any/every port I visit? Isn't that how you catch syphilis?

Justin.


That's what they told us in the Navy but no one on my Destroyer ever
got it. Clap and crabs, yes! They also said no tattoos for the same reason.
g

Larry March 30th 09 01:51 AM

A reminder
 
Justin C wrote in
:

No! You got (possibly) the wrong end of the stick. The wife wants to
come along too, it's just that a Folkboat is too small for two!



Go to Youtube and do a search for "Keep Turning Left".....your kind of
boat....(c;


Edgar March 30th 09 03:32 PM

A reminder
 

"Larry" wrote in message
...
Vic Smith wrote in
:

Dump her! The docks are full of cooperative females to breed...(c;]


Easy to see why you're not married.

--Vic



Once for 17 years was more than plenty.......

call me an "escapee".....

The day she left me in 1992, after living with a neat freak for 17+ years,
i threw an old T-shirt in the middle of the bedroom floor as an exwife
detector. I knew that if she ever came back, that t-shirt would be "put
up"...just like my iced tea glass the instant I sat it on a surface.

That t-shirt is STILL there, just to make sure....(c;

Were you still bringing home truckloads of interesting antique electronic
stuff for all those 17 years?



Larry March 30th 09 06:43 PM

A reminder
 
"Edgar" wrote in
:

Were you still bringing home truckloads of interesting antique
electronic stuff for all those 17 years?




Not allowed. I didn't fill the house until after she left...(c;]


Bruce In Bangkok March 31st 09 03:19 AM

A reminder
 
On Mon, 30 Mar 2009 16:43:52 +0000, Larry wrote:

"Edgar" wrote in
:

Were you still bringing home truckloads of interesting antique
electronic stuff for all those 17 years?




Not allowed. I didn't fill the house until after she left...(c;]



Off Topic but someone admonished me for posting a "Ping Larry" so I'll
borrow this thread for a moment.

Larry,

Any thoughts on using a 555 as a pulse width modulator to drive a LED
from a 12 volt source? I am presently using a 7806 and a resister but
that ends up drawing about as many amps as an incandescent light.

Cheers,

Bruce
(bruceinbangkokatgmaildotcom)

Larry March 31st 09 06:13 AM

A reminder
 
Bruce In Bangkok wrote in
:

Any thoughts on using a 555 as a pulse width modulator to drive a LED
from a 12 volt source? I am presently using a 7806 and a resister but
that ends up drawing about as many amps as an incandescent light.



That's exactly how an LED taillight on a vehicle or trailer works. When
you turn on the taillight circuit wire, the lights are pulsed with a
square wave, giving you the illusion of "dim" from your eye's optical
persistence, how you see this message on your screen. When the brake
wire is fed, the LED comes on full DC brightness. There's only one set
of LEDs in them.

The 555 should drive a powertab transistor so you can run as many LEDs
off it as you wish, limited only by the powertab's peak current rating.
You won't need much of a heat sink on this transistor because you'll
make SURE that when it is on it is fully saturated by selecting its
series base resistor. A normally-off power MOSFET used in small
inverters eliminates any load at all on the 555 and is more efficient as
it saturates in a snap. There are lots of models. I'm currently
working on a switching audio power amp with such MOSFET output
transistors. The resting feed with no audio input is a square wave fed
to each gate one N-channel one P-channel. The average DC output fed to
a series choke with capacitance on its output towards the speaker load
is zero...50% on, 50% off. The frequency is around 100 Khz and the L-
filter blocks this frequency because its rolloff is around 25 Khz above
the audio we want out. The speakers feel nothing.

When audio is applied to the pulse width modulator, it varies the width
up and down around 50% duty cycle and the output fed through the
averaging circuit L-filter on the output is a VERY low impedance, up to
90V peak-to-peak audio. The transistors don't even get warm when the
audio is painfully loud! These MOSFET switchers are rated for
continuous saturated current of THIRTY AMPS! Their switched off Source
to Drain voltage is rated at 60 or 80 VDC, as I remember.

Make sure you switch the 555 at a very high rate, ABOVE the audio range
so if anything is near the wires that's magnetic, it won't make it
"sing" when dimmed. LEDs can switch on and off at fantastic rates and
STROBE LIKE HELL so you want to make SURE you can't detect their
strobing or it will drive you crazy to sit in their light....like being
in a store or gym lit by stupid Mercury vapor or Metal Halide gas lamps
on 60 Hz. The frequency isn't critical as it's no where near how fast
the 555 can switch it for you. Don't go crazy, however, as you'll end
up with inductive spikes from the wiring.

Next time you're on a street at night and a car with LED taillights is
going away from you so you can see it without its brake lights on, move
your eyes rapidly back and forth and you can see their flashing on and
off at a rapid rate in taillight mode....

Series analog regulator, thankfully for the house batteries, are
HISTORY!

I bet somebody already makes an LED dimmer that works this way....

Here's a custom IC that's cheap and the application note:
http://www.scribd.com/doc/11968289/M...D-Dimmer-with-
CapSense-Control

Another source Google found:
http://www.docstoc.com/docs/4107556/...D-Dimmer-with-
CapSense-Control

Of course, Someone in Vienna is leddimmer.com:
http://leddimmer.com/dateien/Deutsch/struktur/home.html

Ah, here's a nice looking one for $15 from ebay in Singapo
http://cgi.ebay.com.sg/DC-12V-8A-LED...le-brightness-
controller_W0QQcmdZViewItemQQitemZ360136683352

Easy to mount, will look nice if the dimmer is behind a panel with only
its knob protruding through. Price is right.....(c;]

I'm sure Asia has millions of other examples and hits closer to home.


Larry March 31st 09 06:16 AM

A reminder
 
Bruce In Bangkok wrote in
:

Any thoughts on using a 555 as a pulse width modulator to drive a LED
from a 12 volt source? I am presently using a 7806 and a resister but
that ends up drawing about as many amps as an incandescent light.



That last one from Singapore is rated at 8A....It oughta dim the whole LED
suite in the boat!

How cool....as she gets "in the mood"....you lay your hand back behind the
settee and slowly dim all the lights almost imperceptably to match her
increasing excitement.

Yeah....I can see a great use for such a dimmer....(c;]


Gordon March 31st 09 05:49 PM

A reminder
 
Larry wrote:
Bruce In Bangkok wrote in
:

Any thoughts on using a 555 as a pulse width modulator to drive a LED
from a 12 volt source? I am presently using a 7806 and a resister but
that ends up drawing about as many amps as an incandescent light.



That last one from Singapore is rated at 8A....It oughta dim the whole LED
suite in the boat!

How cool....as she gets "in the mood"....you lay your hand back behind the
settee and slowly dim all the lights almost imperceptably to match her
increasing excitement.

Yeah....I can see a great use for such a dimmer....(c;]



Hmmm. Need to dim the lights? Got sumting you don't want her to see?
G


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