John Curl's Blowtorch preamplifier part IV

[gpapag]

Posts containing personal attack, insulting comments (and collateral ) removed.
Please obey Forum Rules, especially #1, #2, #3.

George

 

[Evenharmonics]

Dear Bimo, if you are going to be such a pompous fu smack master full of bombastic braggadocio about your audio amplifier designing skills and what not, maybe it's time to try mimic real Master's other qualities as well, such as humbleness, but so far you come off mainly as an extremely narcissistic and petty person standing on a pedestal reaching far above the clouds who gets a perverted kick of being (in your imagination) envied and praised for by others.
The rest of us challenged commoners have to suit with barely being able to "decrypt a mere 20(?)% of jc's sauce" and sticking around "mediocre audio", but don't let me discourage you from trucking on with your testosterone filled teenage talk, there's an arfy audience of maslow chimps who probably finds your verbiage filling a very important function, got to let hooligans in need for a group belonging have a camp to stick around, the football game itself is of less importance.

I have usually been laughed at by the usual critics, and I have just given up.

When you post laughable things (i.e. Bybee) people laugh at it. It's like putting your finger in boiling water. You know what's going to happen.

 

[picowallspeaker]

I think that bad reproduction of music brings to mental illness.
On the other side, a good music reproduction system brings benefit to health, be it some moment of relax from daily frustations

 

[Mark Johnson]

Cute circuit in X Chap: Accelerated turn-ON of relay

Hadn't seen this one before. He adds six new components and gets a dynamic bootstrap / voltage doubler on the turn-on transient. I also think it's cute that the TVS does double duty, protecting the PMOS gate oxide AND clamping the flyback pulse at turn-off.

_

 

[scottjoplin]

I think that bad reproduction of music brings to mental illness.
On the other side, a good music reproduction system brings benefit to health, be it some moment of relax from daily frustations

You need good bass, those people who think that a small "full range" speaker in a horn is enough are just wrong, plain and simple. 🙂

 

[Bonsai]

Hadn't seen this one before. He adds six new components and gets a dynamic bootstrap / voltage doubler on the turn-on transient. I also think it's cute that the TVS does double duty, protecting the PMOS gate oxide AND clamping the flyback pulse at turn-off.

_

Neat!

 

[picowallspeaker]

You need good bass, those people who think that a small "full range" speaker in a horn is enough are just wrong, plain and simple. 🙂

You need the full bandwidth.
That's how it goes. Like for a painting, would you say " You need good red ?"
No, I need full colors. Or, if it is a sunset, I need to recall the reds & violets that fade to the darkness.
😡

 

[billshurv]

I think that bad reproduction of music brings to mental illness.
On the other side, a good music reproduction system brings benefit to health, be it some moment of relax from daily frustations

Music brings benefits. I have multiple listening posts of differing compromises and all do me good. Even the B&O setup in the bedroom!

 

[Nelson Pass]

I have always wondered how much beer/wine/whatever I would have to buy you and Nelson before one of you admitted quite how many you stocked up on at the time 🙂

 

[scottjoplin]

You need the full bandwidth.
That's how it goes. Like for a painting, would you say " You need good red ?"
No, I need full colors. Or, if it is a sunset, I need to recall the reds & violets that fade to the darkness.
😡

Well yes, but small "full range" drivers aren't usually lacking in the violet hues.

 

[cbdb]

Maybe someone sold them a whole whack of IP or email addresses.

These things happen you know, despite’s laws against it.

Just ‘sayin.

It goes way beyound that now.

On surveillance capatalism.

YouTube

 

[cbdb]

As far as climate change goes. Say theres a 50/50 chance the doom sayers are right. Would you play Russian roulette with the same odds?

 

[Jakob2]

And back to transformer inrush current. The trick is not just to select turn on angle but also to select turn off angle so to minimize the remnant field cause of turn on rush.

Usually the worst case condition (maximised when using large toroidals as the ohmic resistance of the primary winding is low and no air gap present) happens if the mains cycle (when switched on) moves the transformer core more in the same direction in which it was already driven when switched off.
The new cycle drives the core into the saturation region and the maximum inrush current will occur.

The current peak due to the capacitor bank is lower than the maximum inrush current caused by the core being in the saturation region.

 

[Evenharmonics]

Anyway, an interesting science discussion that no doubt will quickly descend into politics so best to ditch it

Yeah, right after Bonsai gets his in.

and rather stick to insulting each other over circuits.

I thought it's over ABX.

 

[gpapag]

I enjoy cleaver circuit ideas as much as the other guy. I like the Art of Electronics - The X-Chapters. All New circuit tricks and techniques.
Do you have any?

Wireless World “Circuit Ideas” column? 🙂

A sample from the X Chapters
Sample Chapter Sections | Art of Electronics – The X Chapters

George

 

[Bonsai]

Yeah, right after Bonsai gets his in.

I thought it's over ABX.

😀

 

[john curl]

Hi everybody! Any other comments that will survive censorship? '-)

 

[scott wurcer]

Wireless World “Circuit Ideas” column? 🙂

A sample from the X Chapters
Sample Chapter Sections | Art of Electronics – The X Chapters

George

Good to see a few of my things in there but not much of use to audio. I apologize for making part of yesterday's mess these things happen I hope you understand.

 

[Evenharmonics]

Doom sayers are trying to sell something, in this case fear.
I don't like to be driven by fear, nor do I want to gamble.
You can't motivate people by telling that E=MC2, but when you frighten them, that will motivate them to contribute.

Keep your senses together with an open but critical mind.

Hans

What?!? You mean FUD spreading isn't just in high-end audio?

Hi everybody! Any other comments that will survive censorship? '-)

Didn't you see post #1501? https://www.diyaudio.com/forums/the...lowtorch-preamplifier-iv-151.html#post6070968

 

[john curl]

Of course I was referring to #1501. I have no idea what was censored, but I would like some constructive feedback if that is at all possible.