Overclock.net › Forums › Volt Mods › General Volt Mods › Cart stuff: PWM to voltage.
New Posts  All Forums:Forum Nav:

Cart stuff: PWM to voltage.

post #1 of 4
Thread Starter 
Couldn't think of where to post this, but I'm betting most of the gurus browsing here would know a thing or two about this.

I need to convert the PWM signal sent to fuel injectors into a 0-5v signal. The signal varies in pulse width as well as the frequency of pulses and I need the voltage to go up as a function of the frequency and width. (This would basically translate the PWM signal into a voltage fuel load signal)

Also the pulse is created through grounding, it's a constant voltage to the injector which is then grounded over and over.


If someone knows a relativly easy way to do this that would be awesome. Buying a chip and wiring it up would qualify as easy. A friend believes this chip http://www.national.com/ds/LM/LM2907.pdf may be able to do it but is not sure and not 100% sure it would work either.



Any help would be greatly appreciated as I've exhausted all my other options.
Black-Hole
(13 items)
 
  
CPUMotherboardGraphicsRAM
I7-930 @ 200x20 HT on Asus Rampage III 2x SLI Gigabyte GTX 460 1GB @ 900/1800 6gb (3x2gb) ddr3-1600 6-8-6 
Hard DriveOSMonitorKeyboard
OCZ vertex II SSD 120gb Windows 7 64 bit 24" 1920x1200 G15 
PowerCaseMouseMouse Pad
Corsair 850HX Danger den semi-custom 2 level case Logitech G7 wireless who uses these? 
  hide details  
Reply
Black-Hole
(13 items)
 
  
CPUMotherboardGraphicsRAM
I7-930 @ 200x20 HT on Asus Rampage III 2x SLI Gigabyte GTX 460 1GB @ 900/1800 6gb (3x2gb) ddr3-1600 6-8-6 
Hard DriveOSMonitorKeyboard
OCZ vertex II SSD 120gb Windows 7 64 bit 24" 1920x1200 G15 
PowerCaseMouseMouse Pad
Corsair 850HX Danger den semi-custom 2 level case Logitech G7 wireless who uses these? 
  hide details  
Reply
post #2 of 4
talntid may be able to not 100% sure
Coeus
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD 940 Msi 970a-g46 2x xfx 7970 G Skill NQ PC1333 4x2 
Hard DriveOptical DriveOSMonitor
Seagate 7200.9 160gb need Windows 10 64bit Sharp 32inch 
Power
Thermaltake 1350 
  hide details  
Reply
Coeus
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD 940 Msi 970a-g46 2x xfx 7970 G Skill NQ PC1333 4x2 
Hard DriveOptical DriveOSMonitor
Seagate 7200.9 160gb need Windows 10 64bit Sharp 32inch 
Power
Thermaltake 1350 
  hide details  
Reply
post #3 of 4
a resistor, capacitor and simple voltage divider network would do exactly what you need let me draw something up...

Is this for data logging reasons?
Wet P180
(13 items)
 
  
CPUMotherboardGraphicsRAM
X4 955 @ 3.9GHz Stable MSI 790FX-GD70 EVGA GTX 260 Core 216 4GB Corsair XMS3 1600 
Hard DriveOptical DriveOSMonitor
320GB x 2, 250GB x 2 (HW Raid0) 2x LITE-ON DVDRW w/ LightScribe Windows 7 x64 Samsung SyncMaster 226BW 
KeyboardPowerCaseMouse
Dell Thermaltake TR2 RX 850W Antec P180B Logitech G3 
  hide details  
Reply
Wet P180
(13 items)
 
  
CPUMotherboardGraphicsRAM
X4 955 @ 3.9GHz Stable MSI 790FX-GD70 EVGA GTX 260 Core 216 4GB Corsair XMS3 1600 
Hard DriveOptical DriveOSMonitor
320GB x 2, 250GB x 2 (HW Raid0) 2x LITE-ON DVDRW w/ LightScribe Windows 7 x64 Samsung SyncMaster 226BW 
KeyboardPowerCaseMouse
Dell Thermaltake TR2 RX 850W Antec P180B Logitech G3 
  hide details  
Reply
post #4 of 4
Thread Starter 
Quote:
Originally Posted by talntid View Post
a resistor, capacitor and simple voltage divider network would do exactly what you need let me draw something up...

Is this for data logging reasons?
It would be for WIS control. Like I said I'm no electronics engineer, but will that really work? Isn't there some sort of logic and counting required?
Black-Hole
(13 items)
 
  
CPUMotherboardGraphicsRAM
I7-930 @ 200x20 HT on Asus Rampage III 2x SLI Gigabyte GTX 460 1GB @ 900/1800 6gb (3x2gb) ddr3-1600 6-8-6 
Hard DriveOSMonitorKeyboard
OCZ vertex II SSD 120gb Windows 7 64 bit 24" 1920x1200 G15 
PowerCaseMouseMouse Pad
Corsair 850HX Danger den semi-custom 2 level case Logitech G7 wireless who uses these? 
  hide details  
Reply
Black-Hole
(13 items)
 
  
CPUMotherboardGraphicsRAM
I7-930 @ 200x20 HT on Asus Rampage III 2x SLI Gigabyte GTX 460 1GB @ 900/1800 6gb (3x2gb) ddr3-1600 6-8-6 
Hard DriveOSMonitorKeyboard
OCZ vertex II SSD 120gb Windows 7 64 bit 24" 1920x1200 G15 
PowerCaseMouseMouse Pad
Corsair 850HX Danger den semi-custom 2 level case Logitech G7 wireless who uses these? 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: General Volt Mods
Overclock.net › Forums › Volt Mods › General Volt Mods › Cart stuff: PWM to voltage.