• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

ignition Kill for quickshift

  • Thread starter Thread starter ashdricky
  • Start date Start date
ashdricky said:
are you describing something like this?
HornButtonIgnitionKill.GIF

only w replace horn button with our relay/mosfet/optoisolator?
Click to expand...

Quote, no I have never seen that before although I have seen horn buttons used to kill the ignition, just not sure how it was done.

You can see that those diodes are speced at 6 amps and 1000V!!!. There is a reason for that. :-\\\ The switch probably arcs over as well unless it is rated at 250V plus.

If you have not figured it out yet, that ignitor has a very high tolerance for high voltage and current [especially at it's coil(-) connection]. It is not trivial to duplicate with an outside solid state device without essentially duplicating what is in side.

If you try and open either side of the coil it is going to apply.


You can look up this kind of stuff all under the heading "COIL DRIVER":

NGB8202N
NGD18N40CLB


You can also look for a write up titled "CAR IGNITION WITH IGBTS" for an overview of what goes on.

You can also go to the MegaSquirt website and look up options for coil drives because that is what you will need to use if you try and implement that diode switch arrangement using a computer or other timing device.
 
Last edited:
You must log in or register to reply here.
Back
Top