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Sender: "piclist-bounces@mit.edu" Date: Thu, 18 Mar 2021 19:20:43 -0700 Subject: Re: [EE]: Battery eliminator for Solar powered pond pump and slowly rising Vin issues Thread-Topic: [EE]: Battery eliminator for Solar powered pond pump and slowly rising Vin issues Thread-Index: AdccZ+MTWdPq3EYAQbGwW4bbkQO6TA== Message-ID: References: <20210319020027.GD28416@laptop.org> <0d24031f9d07b128a2fcf857b181cf14.squirrel@mai.hallikainen.org> List-Help: List-Subscribe: , List-Unsubscribe: , In-Reply-To: <0d24031f9d07b128a2fcf857b181cf14.squirrel@mai.hallikainen.org> Reply-To: Microcontroller discussion list - Public. Accept-Language: en-US X-MS-Exchange-Organization-AuthAs: Anonymous X-MS-Exchange-Organization-AuthSource: TS500.efplus4.local X-MS-Has-Attach: X-Auto-Response-Suppress: All X-MS-Exchange-Organization-SenderIdResult: Pass X-MS-Exchange-Organization-PRD: mit.edu X-MS-TNEF-Correlator: received-spf: Pass (protection.outlook.com: domain of gmail.com designates 209.85.218.49 as permitted sender) receiver=protection.outlook.com; client-ip=209.85.218.49; helo=mail-ej1-f49.google.com; dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=r3L+2YXv+uL1mWp1y19ZD5ttqd5t5Wc+dTbhQJXUIfY=; b=m9DZhmOjtHGfgnPgp/pgVu3pTMlxGQtDtfDKCKmg76inGILoTOQRpNi6VPRhpLwRPG TcVMFduuyB+Gk46qN8PFGYCdy1E1ct3uDH3y5g3KhUt+onSDJjtH7cbRlYF9mBHBAWpG joO3UJZ3SWOJ4WFtfXPvGBkLYWa6nUG01LFx47RVWjJPJBFH+B7fAvfeQ4R/rdWnvecK vd2c8xhG/v8EqfrNsctkOUrDvwlNsWNO1aHQ+nPOr/NcwCz3Ro7e8DV8WteoEgKXAOMt uel1LvmAPmdy+RHVqhGUGA+/2E5RgzGeGUDBvjf07Od36osbKBakxCmgUFRVIW5KzsGi HNyw== authentication-results: spf=pass (sender IP is 209.85.218.49) smtp.mailfrom=gmail.com; mit.edu; dkim=pass (signature was verified) header.d=gmail.com; mit.edu; dmarc=pass action=none header.from=gmail.com; errors-to: piclist-bounces@mit.edu list-id: "Microcontroller discussion list - Public." list-post: x-beenthere: piclist@mit.edu x-mailman-version: 2.1.6 x-received: by 2002:a17:906:b747:: with SMTP id fx7mr1834899ejb.474.1616120481489; Thu, 18 Mar 2021 19:21:21 -0700 (PDT) x-topics: [EE] x-content-filtered-by: Mailman/MimeDel 2.1.6 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Perhaps this idea could be modified to suit,cheers Lach https://www.ledsales.com.au/pdf/Mini_maximiser_instructions.pdf On Fri, 19 Mar 2021 at 13:12, Harold Hallikainen wrote: > > > I've seen this myself. I've heard others say to treat the panel as a > > current source rather than a voltage source. I've just avoided it. > > For all my solar powered projects that have pic, esp8266 or atmega328, > > I've used a battery. Even a particularly old and unhealthy battery. > > > > -- > > James Cameron > > Which brings us back to an idea I first saw with Linear Technology. They > used a switching regulator but got the feedback sample from the input > instead of the output. The regulator would vary the load current to > maintain the input voltage. It's much simpler than other maximum power > point systems. > > Harold > > > > > -- > FCC Rules Updated Daily at http://www.hallikainen.com > Not sent from an iPhone. > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .