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Hi Edson Brusque, you wrote on 4/8/02 9:56:48 PM:

>Hello,
>
>    I'm working on a device that uses a solenoid to spurt a little bit of
>liquid from a recipient with a nose (jet). This is working very well, but I
>would like to implement a way to the PIC to know if the tip is obstruct.
>
>    The solenoid is 24V and is fired for about 25ms with a darlington par
>with a BC548C and a TIP41C. I think that when the tip is obstructed, the
>inrush current to the solenoid is a bit higher than otherwise. If so, I can
>make something like an integrator to measure the total power (uW/h=3F) that
>was sent to the solenoid and know if the tip is blocked or even partially
>blocked.
>
>    Someone have used something similar=3F Would it work=3F Actually I
don't
>have instrumentation to measure solenoid current to know if I'm right.
>
>    Thanks,
>
>    Brusque
>
>-----------------------------------------------------------------
>Edson Brusque                 C.I.Tronics Lighting Designers Ltda
>Researcher and Developer               Blumenau  -  SC  -  Brazil
>Say NO to HTML mail                          www.citronics.com.br
>-----------------------------------------------------------------
>
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Sounds to me like your building or Modifying a Fog Machine and applying
a remote sensing feature to it to ascertain whether the heat exchanger
tip is blocked =3F

If so, a liqid flow meter might be an alternative ...


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Helmut F Schiretz
email: hschiretz@gmx.net
homepage: http://www.free2air.com.au/~hschiretz/homepage
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