X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 10 [X] Return-Path: Sender: To: lml Date: Sun, 10 Dec 2006 13:32:40 -0500 Message-ID: X-Original-Return-Path: Received: from [68.168.78.211] (HELO mta16.adelphia.net) by logan.com (CommuniGate Pro SMTP 5.1.3) with ESMTP id 1658591 for lml@lancaironline.net; Sat, 09 Dec 2006 13:16:44 -0500 Received-SPF: pass receiver=logan.com; client-ip=68.168.78.211; envelope-from=glcasey@adelphia.net Received: from web32 ([68.168.75.139]) by mta16.adelphia.net (InterMail vM.6.01.05.04 201-2131-123-105-20051025) with ESMTP id <20061209175935.LXXL9721.mta16.adelphia.net@web32> for ; Sat, 9 Dec 2006 12:59:35 -0500 X-Original-Message-ID: <5846787.1165688147223.JavaMail.root@web32> X-Original-Date: Sat, 9 Dec 2006 10:15:47 -0800 From: X-Original-To: Lancair Mailing List Subject: Re: Over-excitability MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) Sensitivity: Normal You hit the nail on the head, Paul. The problem with the alternator is the dynamic response of the regulator driving the inductance of the field. With some regulators the system will be unstable without a battery, but as you say, it is certainly possible to build a regulator that will work. Gary From Paul: I guess the alternator's field inductance = could drive a slow-responding regulator into the heebie-jeebies!