cavelamb himself wrote in
m:

Someone here had a good recomendation a year or so back.
HP computer supply or some such thing that could be found on Ebay.


Richard

You're looking for a HP F1064A

-- Geoff
www.GeoffSchultz.org

"Glenn Ashmore" wrote in
:

Even 12V nominal halogen bulbs will loose much of their expected life
if run at battery charging voltages. Some "smart" regulators even
have a "halogen protection" setting that limit charging voltage
expressly for that purpose.



Anyone dumb enough to run a halogen light bulb for anything gets everything
they deserve. How silly.

Humminbird used to sell one called the SureVolt. They ran about $75. When they quit
selling them, they remaineder the last ones for $15-20. They would produce, IIRC,
about 1.5 A of 13.8V. Not enought to run a VHF (in transmit mode), but enough
to keep my GPS and fishfinder from wigging out when I started the motor and the
battery got pulled down to around 8V. It's still going strong on my whaler.


"Larry" wrote in message ...
cavelamb himself wrote in
m:

I'm trying to find a stabalizer circuit for the house battery.
Someone (probably Larry?) a while back mentioned a device that could
take a wide range of input voltages and supply a reliable and smooth
12
VDC.

Any ideas?

Richard


Totally unnecessary. Any voltage from 10-18VDC will run any electronics
made for boats.

If you want to make it smoother, take all the connections apart, wire
brush them to a nice shine then put them all back together and spray
some battery post protector on them.

What you're talking about is a voltage regulator. The only problem is
you'd have to have a much higher voltage to start out with than a
standard battery. The regulators need "overhead" voltage, unless
there's some kind of switching power supply, which I do NOT recommend
because switchers make a lot of RF noise to tear up your VHF and SSB
radios!

The battery is a natural regulator and holds its voltage quite steady at
the posts. The voltage drops you see are caused by light wiring,
corroded breakers, corroded contacts and wires.

by the way....to find where a corroded contact is is quite easy with a
simple voltmeter. Load the circuit to full load. Put the meter ACROSS
each connection and breaker. If the connection is perfect, you read no
voltage. A corroded connector has a voltage drop you can measure UNDER
LOAD CURRENT....narrows down where it is.

In article
eyinternet,
"Chuck Tribolet" wrote:

Humminbird used to sell one called the SureVolt. They ran about $75. When
they quit
selling them, they remaineder the last ones for $15-20. They would produce,
IIRC,
about 1.5 A of 13.8V. Not enought to run a VHF (in transmit mode), but
enough
to keep my GPS and fishfinder from wigging out when I started the motor and
the
battery got pulled down to around 8V. It's still going strong on my whaler.


In the Jameco.com Catalog, on page 123 they sell DC to DC Switching
Power supplies, of various Input and output voltages. Just a quick glance
shows a 8-18 Vdc Input, 12 Vdc Regulated Output at 1.25 amps for $33US
in ones'es. I use these all the time for various projects and they work
very well, and I buy them from OEM Distributers, at a lot less than
from Jameco.

--
Bruce in alaska
add path after fast to reply

Bruce in alaska wrote in
:

In article
eyinternet,
"Chuck Tribolet" wrote:

Humminbird used to sell one called the SureVolt. They ran about $75.
When they quit
selling them, they remaineder the last ones for $15-20. They would
produce, IIRC,
about 1.5 A of 13.8V. Not enought to run a VHF (in transmit mode),
but enough
to keep my GPS and fishfinder from wigging out when I started the
motor and the
battery got pulled down to around 8V. It's still going strong on my
whaler.


In the Jameco.com Catalog, on page 123 they sell DC to DC Switching
Power supplies, of various Input and output voltages. Just a quick
glance shows a 8-18 Vdc Input, 12 Vdc Regulated Output at 1.25 amps
for $33US in ones'es. I use these all the time for various projects
and they work very well, and I buy them from OEM Distributers, at a
lot less than from Jameco.


Powerstream has one that puts out 13.8VDC with 9-14V input and won't
shutdown on starting if the battery stays above 6VDC..

It'll put out 700 watts for 5 minutes surge and 20ADC continuous.

http://www.powerstream.com/DC-PC-12V.htm

idle load is only .15A