From: Clint Jay <cjaysharp@gmail.com>
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Date: Thu, 26 Nov 2020 09:49:47 -0800
Subject: Re: [EE] Current Sense Project
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Why not just put a pair of LEDs with appropriate dropper resistor across
the power?

On Thu, 26 Nov 2020, 17:34 Josh Koffman, <joshybear@gmail.com> wrote:

> Hi all,
>
> I'm thinking about throwing together a quick monitor for my block
> heater. I'd like to know when I forget to plug the car in (because
> let's be honest, it's going to happen...). I've got a small current
> transformer on the way (5A/5mA). I'd like to trigger a relay that
> lights up a 120V indicator light when the block heater is plugged in
> and powered.
>
> My "current" thought is to run the transformer to an ADC on a micro
> and use it to trigger a relay. Am I missing an easier solution? Could
> I run the output of the current transformer to an opto that triggers
> the relay? I would lose the "tweakability" of levels though.
>
> Open to suggestions!
>
> Thanks,
>
> Josh
> --
> A common mistake that people make when trying to design something
> completely foolproof is to underestimate the ingenuity of complete
> fools.
>         -Douglas Adams
> --
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