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From: Jan Panteltje <alien@comet.invalid>
Newsgroups: sci.electronics.design
Subject: Re: 80dB now but still needs improvement at 1KHz
Date: Wed, 06 Nov 2024 09:43:37 GMT
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On a sunny day (Wed, 6 Nov 2024 20:06:20 +1100) it happened Bill Sloman
<bill.sloman@ieee.org> wrote in <vgfbii$21t2e$1@dont-email.me>:

>On 6/11/2024 6:07 pm, Jan Panteltje wrote:
>> On a sunny day (Tue, 5 Nov 2024 11:00:42 -0500) it happened "Edward Rawde"
>> <invalid@invalid.invalid> wrote in
>> <vgdffb$ibt$1@nnrp.usenet.blueworldhosting.com>:
>> 
>>> "Jan Panteltje" <alien@comet.invalid> wrote in message news:vgccvm$6jk3$1@solani.org...
>>>> On a sunny day (Mon, 4 Nov 2024 11:31:01 -0500) it happened "Edward Rawde"
>>>> <invalid@invalid.invalid> wrote in
>>>> <vgass6$28u2$1@nnrp.usenet.blueworldhosting.com>:
>>>>
>>>>> "Jan Panteltje" <alien@comet.invalid> wrote in message news:vg9pnu$ekhh$1@solani.org...
>>>>>> On a sunny day (Sun, 3 Nov 2024 23:06:04 -0500) it happened "Edward Rawde"
>>>>>> <invalid@invalid.invalid> wrote in
>>>>>> <vg9h7b$277o$1@nnrp.usenet.blueworldhosting.com>:
>>>>>>
>>>>>>> Simulation isn't fast but if you let it complete and do an FFT on the last 30 seconds, it's 80dB down at all unwanted
>>>>>>> harmonics.
>>>>>>> There do however seem to be unwanted sidebands close in either side of 1KHz
>>>>>>> Any suggestions for improvement?
>>>>>>
>>>>>> Publish a circuit diagram.
>>>>>> Not that hard to make !
>>>>>
>>>>> If you mean ASCII art, no thanks in the case of this circuit.
>>>>
>>>> Easy to make a screen shot of your spice circuit and upload it one of those free image publication sites
>>>>
>>>> You do not seriously expect readers to start ancient peesees and use millisoft widows emulators to run tea spices
>>>> https://panteltje.nl/panteltje/scope_tv/diagram.jpg
>>>> https://panteltje.nl/pub/swr_bridge_hl_lt_spice.gif
>>>>
>>>
>>> These appear to be LTSpice, so why can't you use it to view my circuits?
>> 
>> As I pointed out, am reading Usenet on a Raspbeery Pi4 8GB
>> Does everything here from spectrum analyzing to audio to video play
>> Why boot up an acient peesee to start a millisoft widows emulator
>> to look up some 80 deebee thingy that likely never has a practical use?
>> 
>> 
>>> In any case if you can't simulate my circuits you won't be able to appreciate how brilliant a designer I am like Bill does.
>> 
>> 80 deebee makes me wonder if you not better spend your time on making e-bikes from vipes...
>>   com/gadgets/2024/11/disposable-vapes-from-a-music-festival-can-power-a-beefy-e-bike-20-miles/
>>   
>> And elteasprites simu is not worth a thing, reality is different from the models used.

I sometimes compare the ElTeaSPrites to a mamatician trying to play tennis
Fater all the things.. The human neural net plays score after score
while the mamatician is still simulating the first backhand..

Bit elated I am as Trump is winning :-)
Maybe ends the ByeThen war making for money game.


 
>Not all that different, and you can test a new idea in LTSpice a lot 
>faster than you can cobble stuff together on the bench.
>
>> I stopped using it long ago (years).
>> My stuff works.
>
>Because you don't try anything new?

Very little is 'new'.
My neural net has been trained on electronics since the early fifties of last century.
ELTheaSPice is just a word...
Used it once to check some filter curves, but there are better filter programs
It gave the wrong results on a simple amplifier I tried on it.
It is extremely limited and again compare it to the tennis player that trained a lifetime
a joke basically.
Get into the very high frequency domain, did a lot of that stuff, it is then more about layout and wavelength and similar stuff
how circuits behave.


>> ElTeaSprites is a bit like Hollowwood movies.
>
>Hollywood movies are expensive. LTSpice is free.
>
>> Burb .. I mean Kirk.. well
>> I do not question your genius, 
>
>Sci.electronics.design does seem to be a genius-free space.

It is design, if it works what is cooked up here, great!
Sure got some interesting ideas from here that I tried.


> There are 
>quite a few competent people who post here, but genius is rare, and most 
>of the people who are called geniuses have exploited a stroke of luck 
>that let them look better than they deserve, though as Pasteur said, 
>chance does favour the prepared mind.

My interests are much wider than electronics
worked in many fields
from electronics to TV to power stations to medical to aircraft to satellite ..what not.


>Plowing through a lot of circuit variations quickly with LTSpice does 
>give you more chances to win that particular lottery.

Sounds like gambling... 
these days AI is using that method to try a zillion variation in medicine related creations.
It may or may not work.
But _understanding_comes first and is always the winner.
Lucky shot may help too.

There is nothing you can not do if you are sufficiently motivated.