[GreenKeys] Distortion problems

[Ralph Mowery]

It is always good to actually see how things work instead of the compute 
simulation.

Not everyone will have the equipment to do the testing.  It is much faster 
to 'build' the circuit on the computer and change things around to see what 
hapens.  Just think of the time it would take and how difficult it would be 
to get a square wave generator that you can vary the voltage from 12 volts 
to 200 volts, then change the resistor and hook all that up to a scope to 
see the curve.
I bet very few would have access to the generator, but most would have a 
computer that can run the program.
Some on here probably don't even have much test equipment.  I have a scope 
and some other test equipment, but I ran the computer sim to see how 
changing things would affect things.  I also have some old rtty journals 
that have the information in it about the distortion and time it takes to 
pull in the selector magnets.  No new information on this subject,but 
interisting to actually see how it works.


----- Original Message ----- 
From: "Jones, Douglas W" <douglas-w-jones at uiowa.edu>
To: <greenkeys at mailman.qth.net>
Sent: Wednesday, July 08, 2015 10:10 AM
Subject: Re: [GreenKeys] Distortion problems


> On Jul 8, 2015, at 8:49 AM, Jeffrey D Angus wrote:
>
>> You can actually how this all works with LTSipce Using a square wave
>> source and upping the voltage and series resistance and watching the
>> rise time across the inductor.
>
> 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.
>
> How very strange modern engineers are, who need to use computer
> simulation to see how something works.
>
>