"Jim Thompson" > wrote in message
news
> On Fri, 19 Nov 2004 23:33:13 -0000, "exxos" > wrote:
>
>>
>>"Jim Thompson" > wrote in message
. ..
>>> On Fri, 19 Nov 2004 22:26:37 -0000, "exxos" > wrote:
>>>
>>>>
>>>>"maxpower" > wrote in message
...
>>>>>i would check out the circuit before cutting and adding resistors and
>>>>> regulators, try to keep eveything working the way it was designed,
>>>>> many
>>>>> a
>>>>> times i have found the 8 way connectors loose/corroded causing a no
>>>>> charge
>>>>> condition. just a simple back probe test to the PCM
>>>>
>>>>
>>>>assuming you replied to my msg, the lamp was part of those car
>>>>diagnostic
>>>>"features", I think the idea was that if the regulator shorted out it
>>>>would
>>>>light the lamp on the dash... only mine had a I/O short (at some point
>>>>in
>>>>its life) so the lamp never lite, but yet the battery was charging to to
>>>>19V... It also doubled up to raise the regulator voltage to about
>>>>13V....so
>>>>much for technology..... good idea in theory though ;-)
>>>>
>>>>chris
>>>>
>>>>
>>> [snip]
>>>
>>> I think you'll find that the lamp was looking at the neutral
>>> (mid-point of the "Y") terminal of the alternator, which is where most
>>> idiot lights get their information... actually quite good at
>>> indicating faults _before_ the battery goes dead.
>>
>>
>>It was in the ground, I actually grounded the point instead of going via
>>the
>>lamp, battery only got around 11V on it though at least it proved the
>>point.
>>It was actually a 12V regulator, I measued it with a DMM at the time and
>>even at high revs it only ever hit 12.5V, so it needed a higher ground
>>ref,
>>hence via the dash lamp. I would never have thought they would do such
>>tricks like that on cars, ive seen it countless times on electronics
>>equipment, though was supprised to see the same trick on a car.
>>
>>Chris
>>
>
> What brand of car? Yugo ?:-)

Citroen (SP?) did well lasted a long time, have a reno now, exloded last
week, ah off topic again....

Chris




>
> ...Jim Thompson
> --
> | James E.Thompson, P.E. | mens |
> | Analog Innovations, Inc. | et |
> | Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
> | Phoenix, Arizona Voice480)460-2350 | |
> | E-mail Address at Website Fax480)460-2142 | Brass Rat |
> | http://www.analog-innovations.com | 1962 |
>
> I love to cook with wine. Sometimes I even put it in the food.