[sdiy] thanks for replies - Blue LED

[harry bissell]

John Luciani wrote:
> The problem with parallel inverters is that you either need to 
> diode-or them
> together or place a series resistor between each output since the 
> inverters
> may not switch at the same time. You could have one inverter high and 
> one low
> (for a short time). It may be a small enough time that it would not
> matter I don't
> know. I have not seen designs with logic outputs paralleled (except
> for open-drain (or open-collector) devices).
If you are using 4000 series CMOS and they are in the same package...you can
parallel inverters. The switching points are VERY close, and the 
inherent resistance
of the gates will do the rest. Don't parallel separate packages... all 
best are off.

30mA sounds pretty high for a blue LED... unless it is one of the 
original "old school"
models which were very poor in brightness.  I'd measure what you really 
need first...
30mA might seem a little more like a laser. Do not stare into with 
remaining eye...

H^) harry
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