[Diy_efi] analog to pwm

[Daniel Nicoson]

I'm working on a PWM pump controller that will have the type of capability
you are looking for.  Some of the guys over at JYturbo (Yahoo groups) are
going to use it on their oversize fuel pumps when at low load.  I've set it
up so we can use it for other things like boost control, progressive rate WI
pump controller etc.

Still testing, nothing to release yet.

If you want to learn this stuff yourself (the most fun, takes time).  Start
Goggling the 555 timer and PWM.  Lots of stuff out there.  Best if you have
an oscilloscope to use when learning these kind of circuits.

Good luck!

Dan Nicoson


-----Original Message-----
From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org]On
Behalf Of Bevan Weiss
Sent: Thursday, February 24, 2005 10:35 PM
To: diy_efi at diy-efi.org
Subject: RE: [Diy_efi] analog to pwm


That's easy.
Just get a 5V triangular or saw tooth waveform generator, and apply both
signals to a comparator.
The output will be a PWM waveform.
Adjust the triangular/saw tooth frequency to adjust the frequency of the PWM
output.

If you're looking for a circuit, and which parts to use etc etc then I'm not
going to tell you that info.  You shouldn't be trying to convert the signal
if the information that I've given isn't enough for you.  If you honestly
have no idea about electronics then you shouldn't be playing with whatever
you're trying to make up this circuit for.  Get the basics down first.

Regards,
Bevan

>From: "Diesel Services" <dsl at airnet.net.nz>>
>I need to change an analog  0-5v signal to a pwm signal to controll a boost
>controller .
>how do I do it ?
>can any one help
>thanks Brent

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