Merc 500 Blueband
 

Hi Guys

I have the above old motor. Works well. I have sounders etc on the boat and
my concern is that the motor does not have any regulation from it's charge
circuit. I have seen it fluctuate to 16V at times.

I can filter out the line noise but need some ideas that I can use to get my
instrument panel to 12-13V .

Any ideas please

Many thanks
Alan

Common problem.

Run the lights, radio etc etc

If you can get a 14v Zener diode with a good current rating , you can clamp
it too.

-W

"Grumpy" wrote in message
u...
Hi Guys

I have the above old motor. Works well. I have sounders etc on the boat
and
my concern is that the motor does not have any regulation from it's charge
circuit. I have seen it fluctuate to 16V at times.

I can filter out the line noise but need some ideas that I can use to get
my
instrument panel to 12-13V .

Any ideas please

Many thanks
Alan

Grumpy wrote:
Hi Guys

I have the above old motor. Works well. I have sounders etc on the boat and
my concern is that the motor does not have any regulation from it's charge
circuit. I have seen it fluctuate to 16V at times.

I can filter out the line noise but need some ideas that I can use to get my
instrument panel to 12-13V .

Any ideas please

Many thanks
Alan



As Clams suggests, but equally don't be too concerned; those systems
never really put out much power (volts & amps together) so your
batteries etc are unlikely to be damaged. As soon as you put any sort of
load on it the excess voltage will go away.

You know this brings to mind Krause's endless stories about "buying"
boat electronics online for his 36ft lobster boat:-) & other fantasy
boats:-) Of course anyone can do web searches, even lying non boaters:-)


K

I have designed a regulator that only loses about 1V so it will hold at 13V
but not sure if there was a better method.
but then if voltage drops to 12V I sit at 11, not too much of a problem.,
guess it's trial and error.

thanks guys


"K. Smith" wrote in message
...
Grumpy wrote:
Hi Guys

I have the above old motor. Works well. I have sounders etc on the boat
and
my concern is that the motor does not have any regulation from it's
charge
circuit. I have seen it fluctuate to 16V at times.

I can filter out the line noise but need some ideas that I can use to
get my
instrument panel to 12-13V .

Any ideas please

Many thanks
Alan



As Clams suggests, but equally don't be too concerned; those systems
never really put out much power (volts & amps together) so your
batteries etc are unlikely to be damaged. As soon as you put any sort of
load on it the excess voltage will go away.

You know this brings to mind Krause's endless stories about "buying"
boat electronics online for his 36ft lobster boat:-) & other fantasy
boats:-) Of course anyone can do web searches, even lying non boaters:-)


K

It's not the batteries that are at risk - it's the fishfinder/GPS
electronic thingies.

-W

"K. Smith" wrote in message
...
Grumpy wrote:
Hi Guys

I have the above old motor. Works well. I have sounders etc on the boat
and
my concern is that the motor does not have any regulation from it's
charge
circuit. I have seen it fluctuate to 16V at times.

I can filter out the line noise but need some ideas that I can use to
get my
instrument panel to 12-13V .

Any ideas please

Many thanks
Alan



As Clams suggests, but equally don't be too concerned; those systems
never really put out much power (volts & amps together) so your
batteries etc are unlikely to be damaged. As soon as you put any sort of
load on it the excess voltage will go away.

You know this brings to mind Krause's endless stories about "buying"
boat electronics online for his 36ft lobster boat:-) & other fantasy
boats:-) Of course anyone can do web searches, even lying non boaters:-)


K

Clams Canino wrote:
It's not the batteries that are at risk - it's the fishfinder/GPS
electronic thingies.

-W

Naaa clams they're fine at that low power. A notional 12 volts
"designed" to be connected to charging systems is well protected from
that low over voltage. The actual electronics themselves don't run at
anything like 12 volts, mostly a well controlled & stable 5

K


"K. Smith" wrote in message
...

Grumpy wrote:

Hi Guys

I have the above old motor. Works well. I have sounders etc on the boat

and

my concern is that the motor does not have any regulation from it's

charge

circuit. I have seen it fluctuate to 16V at times.

I can filter out the line noise but need some ideas that I can use to

get my

instrument panel to 12-13V .

Any ideas please

Many thanks
Alan



As Clams suggests, but equally don't be too concerned; those systems
never really put out much power (volts & amps together) so your
batteries etc are unlikely to be damaged. As soon as you put any sort of
load on it the excess voltage will go away.

You know this brings to mind Krause's endless stories about "buying"
boat electronics online for his 36ft lobster boat:-) & other fantasy
boats:-) Of course anyone can do web searches, even lying non boaters:-)


K

I had an old merc with the unregulated charging system. It will fry an
automotive battery. You need an old style marine battery to hold that voltage
down or get the new style regulator/rectifier. Light bulbs take a beating at
16v and I actually melted my running light lenses.

Nonsence my good man.... Anyone with a CD player can tell you that
Aerosmith, Sabbath, or Zepplin played **loud enough** can keep that pesky
voltage down just fine. :)

-W

"Greg" wrote in message
...
I had an old merc with the unregulated charging system. It will fry an
automotive battery. You need an old style marine battery to hold that
voltage
down or get the new style regulator/rectifier. Light bulbs take a beating
at
16v and I actually melted my running light lenses.

On Sun, 14 Nov 2004 00:00:48 GMT, "Clams Canino"
wrote:


Nonsence my good man.... Anyone with a CD player can tell you that
Aerosmith, Sabbath, or Zepplin played **loud enough** can keep that pesky
voltage down just fine. :)

Zappa - "Prelude to the Afternoon of a Sexually Aroused Gas Mask".

All the best,

Tom
--------------

"What the hell's the deal with this newsgroup...
is there a computer terminal in the day room of
some looney bin somewhere?"

Bilgeman - circa 2004

The Boston Symphony playing Richard Rogers - "Song of the high seas" is more
appropriate for boating. That is particularly true in the Chesapeake when its
blowing out of the south. (as I recall)