Return-Path: Received: from rly-df08.mx.aol.com (rly-df08.mail.aol.com [172.19.156.21]) by air-df01.mail.aol.com (v126.13) with ESMTP id MAILINDF014-56d4b1293d02c6; Sun, 29 Nov 2009 10:31:36 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-df08.mx.aol.com (v125.7) with ESMTP id MAILRELAYINDF084-56d4b1293d02c6; Sun, 29 Nov 2009 10:31:29 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NEljJ-0001ZA-Hv for rs_out_1@blacksheep.org; Sun, 29 Nov 2009 15:30:29 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NEljJ-0001Z1-3x for rsgb_lf_group@blacksheep.org; Sun, 29 Nov 2009 15:30:29 +0000 Received: from out1.ip04ir2.opaltelecom.net ([62.24.128.240]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NEljG-00037g-Rl for rsgb_lf_group@blacksheep.org; Sun, 29 Nov 2009 15:30:29 +0000 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: ApoEAL4iEktOkihC/2dsb2JhbADTDYQxBA X-IronPort-AV: E=Sophos;i="4.47,308,1257120000"; d="scan'208";a="126499200" Received: from unknown (HELO TraceyPC) ([78.146.40.66]) by out1.ip04ir2.opaltelecom.net with SMTP; 29 Nov 2009 15:30:21 +0000 Message-ID: <52516CDBD5F74732BD66C5264DE11E7B@TraceyPC> From: "Tracey Gardner" To: References: <2746F3E144D3480AB85CD466920B1313@lindavideo> <003001ca70e7$24aaf3a0$0401a8c0@xphd97xgq27nyf> <003c01ca70eb$0aa52120$0401a8c0@xphd97xgq27nyf> <4B126AF9.3050300@ntlworld.com> <7FC548B8EA774499A7E2BBC7DDDBD743@lindavideo> In-Reply-To: <7FC548B8EA774499A7E2BBC7DDDBD743@lindavideo> Date: Sun, 29 Nov 2009 15:30:18 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18005 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18005 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Re: Re: 4kv diode Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.1 required=5.0 tests=MISSING_OUTLOOK_NAME autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-AOL-IP: 193.82.116.20 Hello Ken How about these on ebay? 4pcs 1 Amp 10kV High Voltage Rectifier Item number:250539436700 Tracey Hello Everyone. Thanks for the replies, I have some BY255's which are rated at 1300v at 1A, the input to the diode stack is about 2.3KV peak, and was planning to use two BY255s in series in each of the four legs, of the full wave bridge, the problem is most resistors are only rated at 500v, hence using a single diode would remove the need for resistors. With resistors rated at 500v, this would require 16 diodes, and there is not that amount of space. Next question does anyone know of a source of 470K resistore rated at 1KV? these are rare and expensive animals 73 Ken M0KHW -----