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Path: ...!2.eu.feeder.erje.net!feeder.erje.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: liz@poppyrecords.invalid.invalid (Liz Tuddenham) Newsgroups: sci.electronics.design Subject: Re: DC relay latching voltage Date: Sun, 25 Aug 2024 09:48:14 +0100 Organization: Poppy Records Lines: 13 Message-ID: <1qyuaxf.x540dl2u91waN%liz@poppyrecords.invalid.invalid> References: <TDZxO.446835$_X0e.256076@fx14.ams1> <va9r2o$t1cr$1@dont-email.me> <dQ_xO.448110$_X0e.294367@fx14.ams1> <vaa6qa$u84s$1@dont-email.me> <uR3yO.464590$lmDe.288955@fx11.ams1> <1qysk8m.2fhd7fnqs3kN%liz@poppyrecords.invalid.invalid> <GymyO.473697$_X0e.429283@fx14.ams1> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Trace: individual.net 9HJsCAUuDPlwVF6cBTBcRQuLKZ9oV3NDmjoki80bKH6A1P7TFs X-Orig-Path: liz Cancel-Lock: sha1:vMwIBlj4Axw/nX+wUeqpN8LoNlk= sha256:F5SxmXDsEPQBxn5GQELAN4DaYaKR1wV0DbUM7Rs1Quw= User-Agent: MacSOUP/2.4.6 Bytes: 1408 Pimpom <Pimpom@invalid.invalid> wrote: > ...The relay is likely to be a 12V 400Ω model so that the slow > turn off wouldn't unduly stress the transistor. At half-voltage and half-current, the most stressful condition, the dissipation of the transistor would be 90 mW. -- ~ Liz Tuddenham ~ (Remove the ".invalid"s and add ".co.uk" to reply) www.poppyrecords.co.uk