Pelican Parts Forums - 3.2 to 3.5

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Dave,

I'm surprised at a statement like this from you! I don't make assumptions, I follow specs, especially since I don't know the internals of those Bosch Modules, I do know what the spec sheet from Bosch says. It's very clear, it says 5vdc 10-20ma what's not to understand about that? Why would I build a circuit that does not meet the OEM spec? Terms like 'assumptions' or 'adequate' don't cut it in circuit design. I don't want to build a hack, I want to build a rock solid circuit, I try to pay very close attention to details. It's not that hard to get this circuit correct so why not try?

You are however likely correct that less (or more) than 5vdc may work but you'd have to test all sorts of conditions to be sure, not just a variable trigger voltage but things like temps of the BIM could effect the characteristics as well. It may work for one set of tests but not for more extreme conditions.

My goal was to produce a rock solid stable trigger, regardless of the changing input(s).

Quote:

Originally Posted by mysocal911 (Post 8967943)

You have not assumed the actual drive signal necessary for the module. The circuit
posted on Pelican with its resistor values indicated a functioning twin plug ignition
system while providing an adequate drive signal for the 964 module.

Note: The 5 volt spec signal mentioned is not necessarily one with a zero source
impedance/resistance.

Quote:

Originally Posted by scarceller (Post 8967994)

Dave,

I follow specs, especially since I don't know the internals of those Bosch Modules,

Right, sounds like you don't really understand how to interpret the specs and as such
don't know how the modules actually function.

But anyway, enjoy your efforts!

What exactly has been YOUR contribution here? I've been very patient with you over the years, I'm done. If you really don't care to help and assume I know nothing, then feel free to build your own solution and share it if you wish. I'll continue with my efforts I don't need any more feedback from you, please do me a favor and stop critiquing the work I do without any solid advice, I really don't need your help.

Thank you.

Quote:

Originally Posted by mysocal911 (Post 8968524)

Right, sounds like you don't really understand how to interpret the specs and as such
don't know how the modules actually function.

But anyway, enjoy your efforts!

I'll start a new thread on the subject of my Andial Splitter alternative soon. Let's get this thread back on track. I sorry for derailing this thread with Dave, I really should have learned by now.

Quote:

Originally Posted by scarceller (Post 8968666)

Well at least the idea of using two 964 ignition modules without adding a special inverter
box is "out there" for a good EE to design the drive circuitry using only a few resistors.

“It's easy to attack and destroy an act of creation. It's a lot more difficult to perform one.”
― Chuck Palahniuk