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Hermes SMTP Server) with ESMTPA ID f9e1d00b21c001d15a8ecf9a7a1cb27f; Tue, 17 Jan 2023 00:54:50 +0000 (UTC) Message-ID: <700563ac-6616-8a0c-4731-7bb12e78ca48@verizon.net> Date: Mon, 16 Jan 2023 19:54:48 -0500 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.6.1 Subject: Re: GreenKeys Digest, Vol 228, Issue 9 Content-Language: en-US To: greenkeys-request@mailman.qth.net References: <mailman.39511.1673902618.3600.greenkeys@mailman.qth.net> From: Bill Abate <wabate@verizon.net> In-Reply-To: <mailman.39511.1673902618.3600.greenkeys@mailman.qth.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Mailer: WebService/1.1.21062 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.aol Received-SPF: pass (mx205.antispamcloud.com: domain of verizon.net designates 66.163.184.199 as permitted sender) client-ip=66.163.184.199; envelope-from=wabate@verizon.net; helo=sonic301-30.consmr.mail.ne1.yahoo.com; X-SPF-Result: mx205.antispamcloud.com: domain of verizon.net designates 66.163.184.199 as permitted sender Authentication-Results: mx205.antispamcloud.com; iprev=pass (sonic301-30.consmr.mail.ne1.yahoo.com) smtp.remote-ip=66.163.184.199; spf=pass smtp.mailfrom=verizon.net; dkim=pass header.d=verizon.net header.s=a2048 header.a=rsa-sha256; dmarc=pass header.from=verizon.net Authentication-Results: antispamcloud.com; spf=pass smtp.mailfrom=wabate@verizon.net; dkim=pass header.i=verizon.net X-Spampanel-Class: unsure X-Spampanel-Evidence: Combined (0.20) X-Recommended-Action: accept X-Filter-ID: 8G1aH+8yearZuN6N5+X5bm6KuAmzEgFjeXz34jnHp0woGjNPtzbdf+7GR8HTYQGN7U9QAI9zNavG 3QlKurLrVlEQyVzDVZOlehQ3EiJLhbsGe07CixpeWzqjodTfXi6bARJm/iJV16rqnzEG1XyyDqi8 cM4avZySAPi6fyWHbxmjKByclcFXU/z1SYVGTR06hRsoiRV3Gw4l8FCG0F3t3LWzKMIgrwRGkGWo 8QQG7c0qbPIRvHuwzrV050RwmzfkdbnA4ddOCVNyOAaLjGgwoxXcFIDyeNxYbX7bfJHXQgy9WbP3 i2ZPwpsi5uEpQzjemdySlZou9qHIGOZDEEo7O3PuJfOIAQpYEteY7zmkHA+rMIibkpY46HKySyiI 2P6orDjoetqgHmMVL+PhHqGmLuIxSIjWh7/iXAsotc+LErDvl4ZKfm8TL9G6ZeEPfxKUuZJXTsXy oU8WFpZQ9TGP1kRLWRhQfCvUyrpmFetaOQGuqr0aikOvJA+DuzeF4b+ym3AhG426mliYkCHBZpOg oqc4uCQ1hIibn+MrIDYy2WCAEE0aNJttJEDVn4+ZvkwLVgW9/bktU41htiJ8fk7NkA9Xu+rM7Frw bGkvilYrrAaZxZmGP/vt/Q9bSMsS/MdFd5QPALZSRB5dNoLrJgnd3s9Amh4wHcyNHL3auo8mGRfy UoaHUicNxCPoOJtR64JBjhIrvSposEWj3RFWiA5lL3McN6qoXPjenLhIOF1oeRYwWQCfDMJGYWy5 YXEcML2P/kpCCUlzr+5YhJI13GS5+E961SeuoMPlFFLTuHnboz8E3mhiuzGk1/kHcNMwTKUh6Oel Shg8IJl/U8ZCu27mcXjfIay7Q4JEWsX3tYpuByI+Q58MaoN0TDUZ4JkWeoOuHZzP6WI5bJbnmYyJ vtP622uMn1noDfk7STvmayq+Ia01MlT5rP70tCjAC48KuBsc30TIzTIi6Nx+huwi68l6YVz1pRXW hjh9fdbl44I0Df2tQXvW9rhO7Y8dldZVTrz1rnPXEPt4BkgZDgFuq+hE/ektfZG3Vf5rWlkbiqJs 3Vo9Y4esISNUS6wGFNJv5+sZfdH0WSxJrnih+GAv756eM5Amj2p7GuqeZDLlzx2l0gA08GDDor6W Gsd64kTzPNuRVgW9/bktU41htiJ8fk7NkMcqVIVmew1f0LYVJ+ME4xY= X-Report-Abuse-To: spam@quarantine14.antispamcloud.com Tom, You might be able to drive a polar relay with RS-232 output but it probably won't work well.  The typical 255A polar relay should be fed with 100-120VDC with a dropping resistor to get your 60 or 20 ma loop current.  Otherwise there is quite a bit of bias, etc. Its all about back emf. 73, Bill, K3PGB > Message: 5 > Date: Mon, 16 Jan 2023 13:37:41 -0500 > From: Tom Hunter <tomhenryhunter@gmail.com> > To: GreenKeys@mailman.qth.net > Subject: [GreenKeys] RS-232 to Polar Relay > Message-ID: > <CAJK8693Y0eAPQfoFUSq4m5pfjGV0ADO64fwvWdxuFagQc+EMbA@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > John, > > A while back someone (and I cannot remember whom, because he deserves the > credit.) Mentioned that a polar relay can be driven directly by an RS-232 > output. Think about it, it is really a polar signal. > > I am kicking myself because I never thought of something so obvious. > > > Tom N3CRK > ***************************************** ]