Intermission (8-legs challenged can skip):
This seems an interesting package: DIYAMP-EVM Universal Do-It-Yourself (DIY) Amplifier Circuit Evaluation Module | TI.com
Do I see that right, $20 for a set of 32 experimenter 'coupon' boards? And free samples?
/Intermission
Jan
This seems an interesting package: DIYAMP-EVM Universal Do-It-Yourself (DIY) Amplifier Circuit Evaluation Module | TI.com
Do I see that right, $20 for a set of 32 experimenter 'coupon' boards? And free samples?
/Intermission
Jan
Looks like the kit includes a header strip and a perforated PCB that can be broken up and populated with components to make evaluation circuits.
Diagram on page 4 here:
http://www.ti.com/lit/ug/sbou191/sbou191.pdf
From my read you get the coupon boards for $20 usd but no part samples . Per digi-key and Mouser sites linked from TI .
Doesn't look like you have to, and I don't think they're trying to advise about what should be considered best practice, only offering a way to map them out if one wishes to.
I leave you responsible for your comments.
This article is 17 years old.
I did not talked about the values of its content, the components and knowledge have evolved so much, but the approach that consists, when we perceive colorations, to try to identify the cause: it was new and helpful at this time.
What did you publish on this subject at that time?
On my side, in the 70, i was not aware of those caps characteristics, taking care only of their values and voltages, putting electrolytics in all our signal paths.
By example, I should be interested to have some insights about this kind of things: Examples of Noise Countermeasures (Video) | Ceramic Capacitor | Murata Manufacturing Co., Ltd.
Did the noise dimming brings some improvements in distortions ?
Ceramic offer so much benefit (size/voltage, durability, hf performance). And who want to use this ;-): Duelund CAST Range | Hifi Collective
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I'd probably start with this list😀
Scott Wurcer Inventions, Patents and Patent Applications - Justia Patents Search
The noise reducing caps are not ones I would put in a critical signal path, they are designed to stop the noise in high dI/dt switcher circuits, they are designed for one particular function, to use them in another place in a circuit would probably be counter productive. They are designed for cost and space restricted SMPS, especially laptops where there is not the mass or space to attenuate the noise of the caps singing, used in the ac loops of the supply either as (part of) Cin or Cout or both.
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I know who is Scott and was a customer of A.D. and PMI.
Not a lot anymore,* so many* "obsolete" analog circuits i liked to use.
That what i imagined too, of course, but if it appears not, bad idea to miss a chance.
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I had nothing to sell. If you ever saw some analog signal processing boards from say a Nike missile you would see some really fancy kit. These guys knew this stuff in the late 50's, I would just have been preaching to the choir.
Analogue is alive, just obscured by so much digital, that is far more glamorous to look at...
An analogy is when non technical customers are shown round, they ooh and ahh at the pretty 3D pictures of a design, show them a constraints manager window or the flat PCB layout and they start yawning... Digital is like the 3D, glamorous, exciting fast... analogue is where its at though, to interact with the world you need analogue front ends and often analogue output. There is a fluidity to analogue design and layout that I prefer to rather regimented digital stuff.
An analogy is when non technical customers are shown round, they ooh and ahh at the pretty 3D pictures of a design, show them a constraints manager window or the flat PCB layout and they start yawning... Digital is like the 3D, glamorous, exciting fast... analogue is where its at though, to interact with the world you need analogue front ends and often analogue output. There is a fluidity to analogue design and layout that I prefer to rather regimented digital stuff.
Jan would something like this work?
http://unitedsic.com/wp-content/uploads/2016/02/bp_2015_03-Using-“Normally-on”-JFETs.pdf
http://unitedsic.com/wp-content/uploads/2016/02/bp_2015_03-Using-“Normally-on”-JFETs.pdf
Did-you mean that the audio industry was 20 years late from the state of the rocket science at this time and that your sudden interest in audio comes from an archeological process ?
(Remember i walked on the moon in 1953)
Oh, and, if I am not mistaken, Walt Jung was one of your colleague at AD, not ?
Your sincerely,
Tryphon Tournesol.
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You often read in these pages about people complaining that their fav devices are getting phased out or are obsolete. Yet, the successor devices are often higher performance in one or more parameters than the obsoleted ones.
For example, the much-lamented low Rbb transistors of the 70-ies. But contemporary Zetex devices have even lower Rbb!
So, should the conclusion not be that it is the people who's designs and thinking processes are obsoleted instead of the devices?
Jan
For example, the much-lamented low Rbb transistors of the 70-ies. But contemporary Zetex devices have even lower Rbb!
So, should the conclusion not be that it is the people who's designs and thinking processes are obsoleted instead of the devices?
Jan
Always the same language full of kindness and respect for others, uh ?
A.D. was the leader in analog circuits. It looks now more oriented to new markets, that seems clever when it is about turnover and profits.
When you had found an IC that match more or less your needs and preferences and you are used to, it is sad to see it disappear.
So, if your thinking process is 'not obsoleted', you begin to look elsewhere if you can find a new item ... with better compliance or performance than the other ones that your beloved provider still propose.
The same approach that made you choose the old one, now obsolete.
Respectfully,
Tryphon Tournesol.
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Please do not sign your posts with 'respectfully' unless you start to be the same to others. Accusing people of being unkind or disrespectful when it only exists in your mind is unfair at best.
Or tell me where my post was unkind or disrespectful? Or maybe you can't handle facts?
Jan
It was quoted in my previous post.
Sorry, but:
"that it is the people who's designs and thinking processes are obsoleted...", even presented under an interrogative form, is not exactly that i call "kind" and respectful.
May-be it is my poor understanding of English, but it looks more "playing the player" than the ball.
Jan's comment may not have been intended so much as criticism of specific individuals, but rather as observation relating to what has been learned about human mental processes from the fields of cognitive psychology and neuroscience.
Only 5% of brain activity is allocated to the functioning of conscious awareness. The other 95% is the really powerful part that often is more in control than the more feeble 5%. Since operations of the 95% are not directly observable by the 5%, people (the part of them that is their conscious awareness) have little way of knowing most of the truth about themselves and their thinking processes. While some of this is not flattering to what many people would like to think about themselves, it appears to be scientifically factual. That being the case, offense should probably not be taken upon mention of the some of effects and consequences arising therefrom, at least if done in a neutral and factual way.
Regarding the specific question Jan raised, it seems to me that there is not one simple explanation that fits all situations. People, and evolving technologies and markets are all too complex for that.
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It may be a language problem. I did not say that the people are obsoleted, I was very concious of that. I said the designs and thought processes are obsolete. That is a fact, not a personal attack, definitely not playing the player.
Jan
How did Bear decide the polarity of a piece of wire?
I hope it wasn't the way I saw it done at Hoveland!
I hope it wasn't the way I saw it done at Hoveland!
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