Return-Path: Received: (qmail 27688 invoked from network); 27 Jun 2001 02:16:28 -0000 Received: from unknown (HELO murphys-inbound.servers.plus.net) (212.159.14.225) by excalibur-qfe1-smtp-plusnet.harl.plus.net with SMTP; 27 Jun 2001 02:16:28 -0000 Received: (qmail 24996 invoked from network); 27 Jun 2001 02:16:39 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 27 Jun 2001 02:16:39 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 15F4nP-0006TT-00 for rsgb_lf_group-outgoing@blacksheep.org; Wed, 27 Jun 2001 03:11:11 +0100 Received: from tor-smtp4.attcanada.ca ([207.181.101.72] helo=attcanada.ca) by post.thorcom.com with esmtp (Exim 3.16 #2) id 15F4nN-0006TO-00 for rsgb_lf_group@blacksheep.org; Wed, 27 Jun 2001 03:11:09 +0100 Received: from david (ham-on51-161.netcom.ca [142.154.69.9]) by attcanada.ca (8.8.7-s-4/8.8.7) with SMTP id WAA12467 for ; Tue, 26 Jun 2001 22:10:27 -0400 (EDT) Message-ID: <00a601c0fea5$f2a78e20$6655872c@david> From: "Tenty" To: rsgb_lf_group@blacksheep.org References: <7D653C9C42F5D411A27C00508BF8803D55C512@pdw-mail-r1.dstl.gov.uk> Subject: LF: Re: RE: 3 phase ripple Date: Wed, 27 Jun 2001 02:10:24 +0100 Organization: Holland Data and Wireless MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2462.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: We have 120 V, not 110 V.. Normal houses don't have 3 phases here as we have a very old fashion electricity system...:=( Every standard house here has 120 and 240 V (two phases)... 120 V (+90 degrees) <------------ 0 (neutral) --------------> 120 V (-90 degrees) So 180 degree difference The 240 V is for our electric ranges ..and maybe a linear :=) Only factories (in an industrial area) and large buildings have 3 phases Some small factories outside the cities convert from two to three phases to run their machines on.. I think your can make 2x1.41x120 = 338 V dc but I don't want to risk my life by not using a safety transformer! Was I confused when I arrived here :=) Bob, ve3tok >However, US and Canadian stations with their 110V mains (supplied as >effectively 6 phases - 3 phase with plus / minus each plus centre tap / >ground, seven wires in total, if I understand it correctly based on looking >at pictures of power cables in US towns) would result in a 270 V rail so, >much more realistic and safe using low cost 500V devices. >Andy G4JNT > -----Original Message----- > From: John Rabson [mailto:word.factory@zetnet.co.uk] > Sent: 2001-06-25 19:05 > To: rsgb_lf_group@blacksheep.org > Subject: LF: 3 phase ripple (was Re: Re: RE: LX1PD) > > > Sorry, I meant rms. > > For a 3 phase full wave bridge > > RMS ripple/mean OP = 4.2% > > (Ref Data for Radio Engs 5th ed p 13-5) > > 73 de > John Rabson G3PAI > > > -- The Information contained in this E-Mail and any subsequent correspondence is private and is intended solely for the intended recipient(s). For those other than the recipient any disclosure, copying, distribution, or any action taken or omitted to be taken in reliance on such information is prohibited and may be unlawful.