alternator voltage regulator

Guest
Hello,

How exactly does the voltage regulator on an alternator work? In
particular, how is the set point voltage set?

I've googled around a bit, but haven't found an answer to the voltage
set point question...

Thanks,

Mike Darrett
 
<mike-nospam@darrettenterprises.com> wrote in message
news:1109188250.271972.33030@l41g2000cwc.googlegroups.com...
Hello,

How exactly does the voltage regulator on an alternator work? In
particular, how is the set point voltage set?

I've googled around a bit, but haven't found an answer to the voltage
set point question...

Thanks,

Mike Darrett
Click to expand...
In a nutshell, the voltage regulator controls the power being supplied to
the rotor, which in turn controls the alternator output. The voltage
regulator monitors the output voltage (normally done with a zenor diode) and
increases/decrease the rotor power accordingly.
 
By PWMing the field (rotor),
but NOT done with a zener... they've been
ASICs since the mid-60s.
Click to expand...
So what's the "inner" voltage reference if not a Zener? Bandgaps in
the 60's? Forward biased diodes?

Tim.
 
Jim Thompson wrote:
On 23 Feb 2005 12:21:03 -0800, "Tim Shoppa"
shoppa@trailing-edge.com
wrote:

By PWMing the field (rotor),
but NOT done with a zener... they've been
ASICs since the mid-60s.

So what's the "inner" voltage reference if not a Zener? Bandgaps in
the 60's? Forward biased diodes?

Tim.

BG/Diode-combinations to match the TC of lead-acid cells. See my
website for the pertinent patents ;-)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.
Click to expand...

Neat... so are today's alternator voltage regulators based on the 1970
US patent 3,546,563?

Mike
 
mike-nospam@darrettenterprises.com wrote:
Hello,

How exactly does the voltage regulator on an alternator work? In
particular, how is the set point voltage set?

I've googled around a bit, but haven't found an answer to the voltage
set point question...

Thanks,

Mike Darrett
Click to expand...
This page has some schematics (poorly reproduced, sorry) that show a
1970s version.
--
John Popelish
 
"Jim Thompson" <thegreatone@example.com> wrote in message
news:tqtp11lkr6nbmmipd6uu0gskg1ij58ibgg@4ax.com...
On 23 Feb 2005 13:24:34 -0800, mike-nospam@darrettenterprises.com
wrote:

...................
back in the'60's, no one
wanted to pay an extra penny for anything, particularly if it was only
for better performance :)

...Jim Thompson
--
Differing from today in what way? :)
Click to expand...

Ken
 
On Thu, 24 Feb 2005 12:59:32 +1300, "Ken Taylor" <ken123@xtra.co.nz>
wrote:

"Jim Thompson" <thegreatone@example.com> wrote in message
news:tqtp11lkr6nbmmipd6uu0gskg1ij58ibgg@4ax.com...
On 23 Feb 2005 13:24:34 -0800, mike-nospam@darrettenterprises.com
wrote:

...................
back in the'60's, no one
wanted to pay an extra penny for anything, particularly if it was only
for better performance :)

...Jim Thompson
--
Differing from today in what way? :)

Ken
Click to expand...
Nothing really. But today, so much is possible on-chip. Back then it
would have been an additional external-to-chip capacitor, and there
already was one external cap.

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.
 
On Thu, 24 Feb 2005 11:46:17 -0500, "Pat Ford" <pat.ford@nrc.ca>
wrote:

"Jim Thompson" <thegreatone@example.com> wrote in message
news:pipp11ha53d7a1493aeeguk7kf17g7s62u@4ax.com...
On 23 Feb 2005 12:21:03 -0800, "Tim Shoppa" <shoppa@trailing-edge.com
wrote:

By PWMing the field (rotor),
but NOT done with a zener... they've been
ASICs since the mid-60s.

So what's the "inner" voltage reference if not a Zener? Bandgaps in
the 60's? Forward biased diodes?

Tim.

BG/Diode-combinations to match the TC of lead-acid cells. See my
website for the pertinent patents ;-)

...Jim Thompson

It would be nice if the patents were on your site too, or did I miss them.
You did some cool stuff shame you cant post some the older stuff you did to
help us youngens 8*)
Pat
Click to expand...
I've had multiple requests for that. I'll see what I can do.

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.
 
On Thu, 24 Feb 2005 12:55:12 +0000, amdx wrote:

1970s version.

Which page is that, John??

Crap!

http://mightymo.org/Proj_OneWire.html

Hey guys,
When I load this page, I cannot read a whole line unless I slide the
page back and forth. There must be an
easy change to make so I can see the whole line.
Any ideas? I'm using XP Pro.
(not the first time I've had this problem.)
Click to expand...
It would depend on your screen resolution. There are three images side-by-
side, embedded in an HTML table, which won't wrap - it's a total of
320 * 3 + 8 = 968 pixels wide. If you only have an 800x600 display,
there's nothing you can do but scroll sideways. Or set your resolution
to 1024x768 or higher.

Sorry.
Rich
 
I read in sci.electronics.design that Rich Grise <richgrise@example.net>
wrote (in <pan.2005.02.24.18.00.44.153640@example.net>) about
'alternator voltage regulator', on Thu, 24 Feb 2005:
Who owns the copyright on a patent?
The Patent Office.
Click to expand...
--
Regards, John Woodgate, OOO - Own Opinions Only.
The good news is that nothing is compulsory.
The bad news is that everything is prohibited.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk
 
In article <pan.2005.02.24.18.00.44.153640@example.net>,
richgrise@example.net says...
On Thu, 24 Feb 2005 09:50:05 -0700, Jim Thompson wrote:
On Thu, 24 Feb 2005 11:46:17 -0500, "Pat Ford" <pat.ford@nrc.ca
"Jim Thompson" <thegreatone@example.com> wrote in message
On 23 Feb 2005 12:21:03 -0800, "Tim Shoppa" <shoppa@trailing-edge.com

By PWMing the field (rotor),
but NOT done with a zener... they've been
ASICs since the mid-60s.

So what's the "inner" voltage reference if not a Zener? Bandgaps in
the 60's? Forward biased diodes?

BG/Diode-combinations to match the TC of lead-acid cells. See my
website for the pertinent patents ;-)

It would be nice if the patents were on your site too, or did I miss them.
You did some cool stuff shame you cant post some the older stuff you did to
help us youngens 8*)

I've had multiple requests for that. I'll see what I can do.

Who owns the copyright on a patent?
Click to expand...
The public. The whole purpose of a patent is to teach the art. If it
weren't freely available, teaching would be hindered. If you want the
patent, I'll send it. ;-)

--

Keith
 
On Fri, 25 Feb 2005 06:59:28 -0500, "Pat Ford" <pat.ford@nrc.ca>
wrote:

"Jim Thompson" <thegreatone@example.com> wrote in message
news:nqos11pu5s6iej17usjr6fr32rgn7eh2uf@4ax.com...
On Thu, 24 Feb 2005 11:46:17 -0500, "Pat Ford" <pat.ford@nrc.ca
wrote:

[snip]

It would be nice if the patents were on your site too, or did I miss
them.
You did some cool stuff shame you cant post some the older stuff you did
to
help us youngens 8*)
Pat


Patent Links now added to my Home Page.

...Jim Thompson
--

Great, Thanks, now I have some reading to do.
Pat
Click to expand...
Yep. I have some spare time now that a really major panic project is
winding down... it WAS eating 12 hour days, 7 days a week :-(

I think I'll post links to some of my old designs as well.

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.
 
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