Aron;
Any electronic components are affected by heat. Keeping them cool
enhances their performance and reliability.
Our (TI) integrated circuits are rated over different temperature
ranges: 0 to +70C, -40 to +85C, and -55 to +125C. Not all devices are
available over these three temperature ranges, either. Naturally, the
widest temp range devices are the most expensive. Keeping the circuit
away from heat sources is a VERY good idea.
Electrical interference is becoming more of a problem these days;
everyone has a cell phone and the number of RF wireless devices is
increasing all the time. This stuff, like ignition interference, gets
into circuits that are not shielded or filtered properly. Cheap stuff
usually cuts corners to keep the price low but in a severe environment
they croak like a pond full of toads. High-dollar stuff is usually
better but if the designer wasn't aware of how to deal with RFI/EMI
interference problems, its performance can be compromised, too.
Regards, Neil Tucson, AZ
-----Original Message-----
From: owner-land-speed@autox.team.net
[mailto:owner-land-speed@autox.team.net] On Behalf Of atrav
Sent: Wednesday, April 20, 2005 7:52 PM
To: LSR list
Subject: Protecting the brain
With one of my motorcycle projects, the ignition controller was factory
mounted way back under the
pillion seat. With my daily beater, the ignition controller is right
against the back of the tail
light. These seem to be very minimal timing controllers, there's no TPS
or vacuum sensor, basically
they just seem to be an electronic version of a pure mechanical advance
mechanism.
So, my question is, are they particularly sensitive to heat or
electrical interference? As the
answer to "why they are mounted so far back in the chassis?"
The real reason is I'd like to mount it right against the battery box,
directly behind the air
filters, but don't want any problems with that either.
TIA,
-Aron-
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