Re: Alternatives to LM1830 / ULN2429A Fluid Level Sensor ICs

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#2377

From: berdpee
Date: Mon, 29 Jul 2002 23:37

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Ever considered using a capacitance probe, An anodised aluminium probe
makes a good non conducting capacitor, the anodising makes a good
dielectric. A 555 converts capacitance into frequency, inversely of
course.

On Wed, 24 Jul 2002 13:39:52 +0800, "Rob" <aj_benjamin@hotmail.com>
wrote:

>Is anyone aware of replacements for the National semis LM1830 or Allegros
>ULN2429A fluid level sensor IC's?
>
>Both the '1830 and the '2429 have been discontinued and appear not to have
>been replaced. I am particularly looking for a single chip solution in
>reasonable volume (100's). I figure someone must make something but quite a
>bit of searching has not turned up any alternatives.
>
>Any ideas?
>
>thanks
>rob
>
>

aeolus

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From: berdpee@ami.com.au
Newsgroups: sci.electronics.design,aus.electronics
Subject: Re: Alternatives to LM1830 / ULN2429A Fluid Level Sensor ICs
Date: Mon, 29 Jul 2002 23:37:07 GMT
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