Return-Path: Received: (qmail 3980 invoked from network); 8 Dec 2000 10:48:17 -0000 Received: from unknown (HELO murphys-inbound.servers.plus.net) (212.159.14.225) by 10.226.25.101 with SMTP; 8 Dec 2000 10:48:17 -0000 Received: (qmail 25518 invoked from network); 8 Dec 2000 10:51:05 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 8 Dec 2000 10:51:05 -0000 Content-Transfer-Encoding: 8bit Received: from majordom by post.thorcom.com with local (Exim 3.16 #1) id 144Kro-0006oz-00 for rsgb_lf_group-outgoing@blacksheep.org; Fri, 08 Dec 2000 10:35:04 +0000 X-Priority: 3 X-MSMail-Priority: Normal Received: from bob.dera.gov.uk ([192.5.29.90]) by post.thorcom.com with esmtp (Exim 3.16 #1) id 144Krn-0006ot-00 for rsgb_lf_group@blacksheep.org; Fri, 08 Dec 2000 10:35:03 +0000 Received: by bob.dera.gov.uk; (8.8.8/1.3/10May95) id KAA25011; Fri, 8 Dec 2000 10:35:17 GMT Received: (qmail 257 invoked from network); 8 Dec 2000 09:24:17 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from gauntlet.mail.dera.gov.uk (172.16.9.10) by baton.dera.gov.uk with SMTP; 8 Dec 2000 09:24:17 -0000 Received: by gauntlet.mail.dera.gov.uk; id JAA01736; Fri, 8 Dec 2000 09:12:17 GMT Received: from unknown(10.71.64.31) by gauntlet.mail.dera.gov.uk via smap (3.2) id xma001725; Fri, 8 Dec 00 09:12:03 GMT Received: from frn-gold-1.dera.gov.uk (unverified) by mailguard.dera.gov.uk (Content Technologies SMTPRS 4.1.5) with ESMTP id for ; Fri, 8 Dec 2000 08:22:45 +0000 Received: by frn-gold-1.dera.gov.uk with Internet Mail Service (5.0.1460.8) id ; Fri, 8 Dec 2000 08:21:19 -0000 Message-ID: <65AECDF1F89AD411900400508BFC869F0D746B@pdw-mail-1.dera.gov.uk> From: "Talbot Andrew" To: rsgb_lf_group@blacksheep.org Subject: LF: Re:amplifiers Date: Fri, 8 Dec 2000 08:21:21 -0000 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.0.1460.8) Content-Type: text/plain; charset=iso-8859-1; format=flowed Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Yes I do use such a beast for testing, couldn't use a scope safely on the Tx otherwise ! But afterwards, since the PA is isolated by well insulated transformers at input and output, the isolating transformer can be left out making for a very compact PA Andy > -----Original Message----- > From: Vernall [mailto:vernall@xtra.co.nz] > Sent: 2000-12-07 20:14 > To: rsgb_lf_group@blacksheep.org > Subject: LF: Re: Re:amplifiers > > > If rectified mains power supplies are to be considered, one > way to improve > safety is to use a 1:1 isolating transformer, which are > fairly available. > It should at least be used for doing development or any testing. > -- 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.