Alt-BEAM Archive
Message #02673
To: "'Steven Bolt'" sbolt@xs4all.nl
From: Wilf Rigter Wilf.Rigter@powertech.bc.ca
Date: Mon, 26 Apr 1999 19:11:26 -0700
Subject: [alt-beam] Re: AQUASENSOR
content-type: text/plain
Thank you Steven,
Here's a single chip LED version. The LEDs must be high efficiency type.
With 3% duty cycle the average current is about 200 uA.
regards
Wilf Rigter mailto:wilf.rigter@powertech.bc.ca
tel: (604)590-7493
fax: (604)590-3411
<>
> -----Original Message-----
> From: Steven Bolt [SMTP:sbolt@xs4all.nl]
> Sent: Monday, April 26, 1999 10:44 AM
> To: Sean Rigter
> Cc: beam
> Subject: Re: AQUASENSOR
>
> On Sun, 25 Apr 1999, Sean Rigter wrote:
>
>
> Nice design, too. Using a Piezo did cross my mind at the time, but
> two LEDs - red to demand water, green to flash "all's fine" - were
> preferred by the `user group'. A device which most of the time does
> nothing might not be functioning. Given the two LEDs output
> requirement, a second IC is hard to avoid.
>
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