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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
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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 ~
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www.poppyrecords.co.uk