Flywheel/Encoder patterns

[Bruno!]

On Sun, 22 Dec 1996, Mazda Ebrahimi wrote:

> Jonathan Barnes wrote:

[snippity-snip]

> I think someone already makes a single chip ignition coil driver chip with a feedback 
> signal to the processor, so the electronic component count is no higher than before 
> (maybe a little more expensive).  Also, generally speaking, in production, one would 
> almost always rather eliminate a sensor without sacrificing performance by just writing 
> more software code.  You pay for code development once, but you pay for the sensor for 
> every engine.  I'll try to look for the paper I read regarding the ignition driver 
> circuit and post it here if I find it.

There are a few kits here in oz featured in Silicon Chip (electronics 
magazine) that uses an MC3334P ignition chip by Motorola. The most 
complex part of the circuitry is the input conditioning, and the output 
drives a power darlington. The kit itself is actually quite simple, and 
to adapt this to a microprocessor based system IMHO, would not be that 
hard. The chip in australia is about 7 bux, which would probably mean 
it's about 10 cents in the states :)

		Bruno.  (b.marzano at student.canberra.edu.au)

	Smile. It makes people wonder what you are thinking about.