Re: 12 volt power source?

On Wed, 26 Dec 2007 07:30:19 +1300, I said, "Pick a card, any card"
and Greg Procter <procter@xxxxxxxxxx> instead replied:

Ray Haddad wrote:

On Mon, 24 Dec 2007 09:36:14 +1300, I said, "Pick a card, any card"
and Greg Procter <procter@xxxxxxxxxx> instead replied:

Ray Haddad wrote:

On Mon, 24 Dec 2007 08:34:58 +1300, I said, "Pick a card, any card"
and Greg Procter <procter@xxxxxxxxxx> instead replied:

Here's a laboratory power supply from Jaycar Electronics:
<http://www1.jaycar.com.au/productView.asp?ID=MP3078&CATID=&keywords=Bench+power+supply&SPECIAL=&form=KEYWORD&ProdCodeOnly=&Keyword1=&Keyword2=&pageNumber=&priceMin=&priceMax=&SUBCATID=>

Here's a laboratory power supply from *** Smith Electronics:
<http://dseau.resultspage.com/search.php?sessionid=476eb5e50123fe3a273fc0a87f9c0718&w=Power+supply+13.8&site=&submit.x=11&submit.y=8>

Sorry the links are so long but that takes you to the specific product.

I've been involved with fitting ship, boat and truck radio/depth finding
etc gear (AWA NZ, a division of RCA USA) All our gear was rated at 13.8
volts because that's the operating voltage found on batteries in circuit
in those situations.

That's because they run from a generator or an alternator and not a
12 volt battery which is never, ever going to be at 13.8 volts.

LOL.

The battery is in circuit between the generator/alternator and the load,
it's an integral part of the voltage regulation circuit.
If the alternator and the load are at 13.8 volts then the battery _must_
be at ...?

No, Greg. The entire CIRCUIT is at 13.8 volts.

Exactly Ray - geeze, it really takes a _long_ time for you to not
understand the completely obvious!

Baloney. You've been spewing from the mountaintops that a 12 volt
battery will measure 13.8 volts and that's simply wrong. Don't try
to weasel out of it now. Everyone here has been trying to convince
you that the CHARGING circuit is 13.8 volts and now you pretend you
knew it all along.

A 12 volt battery will not ever measure 13.8 volts as you stated.

Not the battery. When
you turn off the motor, the battery drops to 12 volts just like
always.

Why do you keep stating that which is only correct when the battery is
at 12 volts?

Because a 12 volt battery will never, ever measure 13.8 volts. Ever.

You really don't understand batteries. Just leave it at
that. Otherwise you'll keep on making a fool of yourself.

This one bears repeating. You simply don't understand batteries,
Greg.
--
Ray
.

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