[GreenKeys] Distortion problems

[Jeffrey D Angus]

On 7/8/2015 9:10 AM, Jones, Douglas W wrote:
> I am so old school!  I would have said, you can actually see how
> this works by putting a square wave and a resistor in series with
> an inductor and using a scope.
Actually, the first time around, I didn't have a scope. I used a sheet of
graph paper, colored pencils for "subsequent" traces and did the
calculations with a Pickett slide rule.
> How very strange modern engineers are, who need to use computer
> simulation to see how something works.
Back around 1978 or so, while working at Magnavox, we had an IBM
370 for a time share system. We had just gotten a new "circuit
simulator" program. One of the engineers told me, "Here's a circuit, go
see what it does."
"Bad news Mike, according to the simulator, it set fire to itself."
  Of course, he didn't accept it, it's ONLY a computer. So He had me wire
it up in the lab. When I applied power to it, it set fire to itself.
*laughs*
 From then on, he was sold on computer simulations.

On simulators in general, I've always been the "bench guy" to test stuff.
And it's NOT like I lack the equipment in my shop to do "hands on" tests.
In the course of a project, I do verify operation with said equipment.
But I like to do "proof of concept" testing with simulators.

And, now a days, more people have a PC than those that have a scope.


-- 
Jeff-1.0
wa6fwi
http://www.foxsmercantile.com