[Diy_efi] analog to pwm

Fri Feb 25 03:34:07 GMT 2005

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555 timer and a couple transistors.
Radioshack has a 555 timer cookbook with a 555 variable PW timer in it.
use the 0-5v signal to feed in where the variable resistor is... set the RC
constants to get the proper freq to modulate the solenoid and your done.

  _____  

From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org] On
Behalf Of Diesel Services
Sent: Thursday, February 24, 2005 10:27 PM
To: A list for Do-It-Yourself EFI
Subject: [Diy_efi] analog to pwm 

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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<DIV dir=3Dltr align=3Dleft><SPAN class=3D906282803-25022005><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>555 timer and a couple =
transistors.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D906282803-25022005><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>Radioshack has a 555 timer cookbook with a 555 =
variable PW=20
timer in it.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D906282803-25022005><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>use the 0-5v signal to feed in where the =
variable resistor=20
is... set the RC constants to get the proper freq to modulate the =
solenoid and=20
your done.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN =
class=3D906282803-25022005></SPAN>&nbsp;</DIV><BR>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px">
  <DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft>
  <HR tabIndex=3D-1>
  <FONT face=3DTahoma size=3D2><B>From:</B> diy_efi-bounces at diy-efi.org=20
  [mailto:diy_efi-bounces at diy-efi.org] <B>On Behalf Of </B>Diesel=20
  Services<BR><B>Sent:</B> Thursday, February 24, 2005 10:27 =
PM<BR><B>To:</B> A=20
  list for Do-It-Yourself EFI<BR><B>Subject:</B> [Diy_efi] analog to pwm =

  <BR></FONT><BR></DIV>
  <DIV></DIV>
  <DIV><FONT face=3DArial size=3D2>I need to change an analog&nbsp; 0-5v =
signal to a=20
  pwm signal to controll a boost controller . </FONT></DIV>
  <DIV><FONT face=3DArial size=3D2>how do I do it ?</FONT></DIV>
  <DIV><FONT face=3DArial size=3D2>can any one help</FONT></DIV>
  <DIV><FONT face=3DArial size=3D2>thanks=20
Brent</FONT></DIV></BLOCKQUOTE></BODY></HTML>

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