555 for MAF

[Jesse Ruppel]

This site has some good info on setting up astable multivibrators -
http://www.users.dircon.co.uk/~doctron/555.htm.  By changing R1 via a pot
you would also change the high time which would change the duty cycle; I am
not sure if this is acceptable for your application or not though.

Jesse Ruppel
ruppeljw at capital.net

87T Supra
87T 4x4 Pickup

> -----Original Message-----
> From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
> Behalf Of Bruce
> Sent: Sunday, February 16, 1997 10:05 AM
> To: gmecm at diy-efi.org; diy_efi at diy-efi.org
> Subject: 555 for MAF
>
>
>
> The only program I have for finding values for generating a given
> freq with
> a 555 always tries changing 2 values when I try to go for two different
> freq.
>
> I would like to generate a 30-130Hz output from a single 555, and single
> pot.  If it goes off scale in either direction some, no big deal.
>
> Any help appreciated.
> Bruce
>    Applied power to the ecm bench and no smoke exscaped (at least so far)
> <g>
>
>
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