Return-Path: X-Spam-DCC: paranoid 1290; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-0.9 required=5.0 tests=BAYES_00,RATWARE_GECKO_BUILD autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id s8RBvECP013369 for ; Sat, 27 Sep 2014 13:57:14 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1XXqZv-0002j0-6M for rs_out_1@blacksheep.org; Sat, 27 Sep 2014 12:54:19 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1XXqZu-0002ir-Ta for rsgb_lf_group@blacksheep.org; Sat, 27 Sep 2014 12:54:18 +0100 Received: from mail-lb0-f180.google.com ([209.85.217.180]) by relay1.thorcom.net with esmtps (TLSv1:RC4-SHA:128) (Exim 4.82) (envelope-from <73dk7fc@googlemail.com>) id 1XXqZt-00079C-65 for rsgb_lf_group@blacksheep.org; Sat, 27 Sep 2014 12:54:17 +0100 Received: by mail-lb0-f180.google.com with SMTP id f15so2334567lbj.39 for ; Sat, 27 Sep 2014 04:54:15 -0700 (PDT) X-DKIM-Result: Domain=googlemail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20120113; h=from:message-id:date:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; bh=r2qDGpb+fV7E1Do0ND/k6ittvMi8YEoRwxLQD9snutk=; b=IIMOoiWR6R4C/6mQWdIP9/L92MfBzGtAQbeFUtuoSkTVNLN9c7nwY6kZa+Vs0+x185 s5MVflY3LQSyATC5oM28+YGg5ngKr2oGSdMmEedZ+5/CspjTuAHbL1YtJdpBm8IYiqeR b+DPknmyzoJVzCohknOVZEjxWZZX8fg5Pf0evccLOLw5JqOjNp9gRCpSJ8dDIG1Mii+g Gz66CpIAmMFUVZ4AjGo7oL7yl0G4OUfBGUiD6NKc0GgdT+BH6ho6BqAso77FLF8RcxjK ZuM6pqwG/ORwm1gyyiX+kiIIF3czy8/sICjh8yUV55h6V/cQs1K9oYqePfd0U8Ttz1Xr eOkQ== X-Received: by 10.112.28.8 with SMTP id x8mr1706105lbg.104.1411818855822; Sat, 27 Sep 2014 04:54:15 -0700 (PDT) Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de. [129.206.22.206]) by mx.google.com with ESMTPSA id ua3sm2822867lac.35.2014.09.27.04.54.14 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sat, 27 Sep 2014 04:54:15 -0700 (PDT) From: DK7FC <73dk7fc@googlemail.com> X-Google-Original-From: DK7FC <73dk7fc@gmail.com> Message-ID: <5426A565.7000504@gmail.com> Date: Sat, 27 Sep 2014 13:54:13 +0200 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <4B47B680CCBD46B69C3FB841C5A3081F@AGB> <53FE3567.8020208@gmail.com> <009701cfc23e$b4bdc410$1e394c30$@simnet.is> <53FE51E1.3060303@gmail.com> <53FF23E8.10907@gmail.com> <5400127E.3000808@abelian.org> <540049C6.9050006@gmail.com> <143F048B24A040058ED88A15AE211979@MichaelSappPC>, <5402465F.1050101@gmail.com> , <5410AC37.6050506@gmail.com> , <873BC5A1589F4B79B2142360B52A648F@White>, , <5414A1CD.6060608@gmail.com> <5425EDF3.9090806@gmail.com> In-Reply-To: <5425EDF3.9090806@gmail.com> X-Scan-Signature: f62c7cf8eeb8e5a327b71719e9bffff1 Subject: Re: LF: OT, Remote site, garden progress, Solar battery charger Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: RO X-Status: X-Keywords: X-UID: 507 Sorry, there is a mistake in the circuit. I will update the image in the evening. 73, Stefan Am 27.09.2014 00:51, schrieb DK7FC: > Hi all, > > Since today, my solar powered battery in the garden is charged by this > solar battery charger, > https://dl.dropboxusercontent.com/u/19882028/20140927_004153.jpg > It took some time until i found the circuit that suits my > requirements. The losses are very low! The supply current of the > circuit is just 40 uA!. The circuit is a comparator design which > generates no QRM during ON and OFF times. The switching transients are > relatively slow (not like in usual switch mode supplies). The > hysteresis causes a switch-off voltage of 13.9V and a switch-on > voltage of 13.3V. The high current diode which is a very low forward > voltage drop is taken from an old SMPS... > > Just in case someone want to play with similar stuff and likes to have > some ideas... > > 73, Stefan/DK7FC > > PS: Yes yes yes, of course the may be similar circuits in the web and > someone has done it before. But it wasn't the goal to do something the > first time, as usual :-) > >