shop-talk
[Top] [All Lists]

Re: [Shop-talk] Alternator terminals

To: Randall <TR3driver@ca.rr.com>, shop-talk@autox.team.net
Subject: Re: [Shop-talk] Alternator terminals
From: Dave Cavanaugh <cavanadd@frontier.com>
Date: Thu, 14 Apr 2016 19:18:52 -0700
Delivered-to: mharc@autox.team.net
Delivered-to: shop-talk@autox.team.net
References: <CC.60.29674.0806F075@cdptpa-oedge02>
User-agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.7.2
Thanks; I'll give that a try.

We tried just connecting to the B and ground terminals with a meter and 
could never get higher than 5 VDC no matter how hard we pedaled and when 
I put a 12 volt lamp in the circuit it didn't even start to glow.

On 4/14/2016 2:18 AM, Randall wrote:
>> If you look a this chart,
>>
>>
>>
>>      http://dasko.co.nz/articles/alternator-terminals-explained
>>
>>
>> It looks like all I would need to hook up to would be the "B"
>> terminal and the ground and I can ignore the rest.
>>
>> Do I have this right?
> You can try that, but I suspect the Ex terminal needs to get current through 
> the warning lamp (which provides excitation when the
> alternator first starts turning), and the S terminal needs to get battery 
> voltage (The 'sense' input to the voltage regulator).  You
> can use a resistor instead of the lamp, if you want, but you'll still need an 
> external source of 12v to get it working (and a switch
> to stop it from drawing current all the time).  Just jumper the S terminal to 
> the B terminal, though.
>
>> On an automotive alternator how fast does it normally have to
>> spin to put out 12V?
> They'll usually put out something with the engine idling, maybe 1000-1200 rpm 
> at the alternator.  Full output requires more, though,
> generally something like 5000-7000 at the alternator.
>
> Randall
>
> _______________________________________________
>
> Shop-talk@autox.team.net
> Donate: http://www.team.net/donate.html
> Suggested annual donation  $12.96
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe/Manage: 
> http://autox.team.net/mailman/options/shop-talk/cavanadd@frontier.com
>
>

_______________________________________________

Shop-talk@autox.team.net
Archive: http://www.team.net/archive

<Prev in Thread] Current Thread [Next in Thread>