Design Me A Transformer, I Will Pay

[John S]

On 9/8/2019 9:53 AM, jlarkin@highlandsniptechnology.com wrote:

On Sun, 8 Sep 2019 04:24:17 -0700 (PDT), Phil Allison
pallison49@gmail.com> wrote:

John Smug, imitating a troll wrote:
--------------------------------



If I understand your configuration correctly, you have an
autotransformer driven in a class B connection at the ends. The
transformer will need to have the thinnest laminations you can get in
order to handle the 20kHz.


** Utter nonsense.

It's a wide band audio power tranny, not a SMPS.

Using .029 thick steel will not be good. What lamination thickness do
you recommend?

You will need to have enough laminations
(core) to not saturate at 20Hz.

** Right, full power at 20Hz happens all the time in audio ...

Strewth.

I know, but what is Strewth? Is that a foreign language? Or maybe you
are off you medications again.

I suggest the following specifications for your transformer:

Autotransformer (bifilar winding)
20Hz - 20kHz
Current - 10Arms
Voltage rating is not a problem. Even the wire enamel can handle it.
Suggested lamination source: Thomas & Skinner (No connection with them).

I designed transformers, but have no experience with audio.


** If you did, you might know that a standard, tape wound toriodal core auto-tranny would meet the OP's spec with complete ease.

Great! Suggest a core manufacturer and part number. Also suggest number
of turns and wire size. That would prove you know what you're talking about.

 

[John S]

On 9/8/2019 9:53 AM, jlarkin@highlandsniptechnology.com wrote:

On Sun, 8 Sep 2019 04:24:17 -0700 (PDT), Phil Allison
pallison49@gmail.com> wrote:

John Smug, imitating a troll wrote:
--------------------------------


jurb6006@gmail.com wrote:

This has to be high quality for audio, not saturate or any of that
and I need a low DCR.



If I understand your configuration correctly, you have an
autotransformer driven in a class B connection at the ends. The
transformer will need to have the thinnest laminations you can get in
order to handle the 20kHz.


** Utter nonsense.

It's a wide band audio power tranny, not a SMPS.



You will need to have enough laminations
(core) to not saturate at 20Hz.

** Right, full power at 20Hz happens all the time in audio ...

Strewth.


I suggest the following specifications for your transformer:

Autotransformer (bifilar winding)
20Hz - 20kHz
Current - 10Arms
Voltage rating is not a problem. Even the wire enamel can handle it.
Suggested lamination source: Thomas & Skinner (No connection with them).

I designed transformers, but have no experience with audio.


** If you did, you might know that a standard, tape wound toriodal core auto-tranny would meet the OP's spec with complete ease.


It might weigh 100 pounds.

Phil, if you are so knowledgeable, then design him a transformer and
take his money. Otherwise, shut the fuck up.

 

[Phil Allison]

jla...@highlandsniptechnology.com wrote:

----------------------------------------

** Another fuckwit troll on the NG - yawnnnnn....

Phil Allison wrote...

** Win is off with the fairies, again.

60Vp-p = 21.2V rms.
With a 4 ohm load that is 112 watts.

Dunno what the O.P. is doing,


** Reading his posts might be a help ...

Not taking things so literally would be another.


but I always
like to think in terms of the max DC power.

** While ignoring all other information ?

You are just adding to you original absurdity.


Certainly when using a class-D MOSFET stage,
you're always considering the Vmax and Imax.
Pmax Pavg Pwhatever, posh, who cares?


** Well clearly you don't.

Like I said already - way out of your depth and drowning.

Gurgle, gurgle gurgle....


Yeah, Win is an amateur at electronics,

** Win is an academic who readily admits to knowing SFA about audio electronics - and not caring one hoot about that.

compared to someone with your
decades of experience fixing broken guitar pedals.

** Really ?

Posting ridiculous lies and bullshit about an identified poster are not alternatives to having a counter argument.

Unless you simply have no brain.



...... Phil

 

[Phil Allison]

John Shithead is a TROLL wrote:

----------------------------------

** Utter nonsense.

It's a wide band audio power tranny, not a SMPS.

Using .029 thick steel will not be good.

** Explain how million of high quality audio output trannys use regular steel laminations. I will not hold my breath waiting.

My point about SMPS has gone way over your head.

You will need to have enough laminations
(core) to not saturate at 20Hz.

** Right, full power at 20Hz happens all the time in audio ...

Strewth.


I know, but what is Strewth?

** A common exclamation of disbelief.

Is that a foreign language?

** Maybe pommy slang, but widely used elsewhere.

( snip mindless abuse)

I designed transformers, but have no experience with audio.


** If you did, you might know that a standard, tape wound toriodal core auto-tranny would meet the OP's spec with complete ease.


Great! Suggest a core manufacturer and part number.

** Any of the folk who do custom toriodals would be fine.

Your ignorance of the whole topic is appalling.

As are your fucking horrible manners.



...... Phil

 

[Phil Allison]

John Shithead is a complete idiot wrote:

If I understand your configuration correctly, you have an
autotransformer driven in a class B connection at the ends. The
transformer will need to have the thinnest laminations you can get in
order to handle the 20kHz.


** Utter nonsense.

It's a wide band audio power tranny, not a SMPS.



You will need to have enough laminations
(core) to not saturate at 20Hz.

** Right, full power at 20Hz happens all the time in audio ...

Strewth.


I suggest the following specifications for your transformer:

Autotransformer (bifilar winding)
20Hz - 20kHz
Current - 10Arms
Voltage rating is not a problem. Even the wire enamel can handle it.
Suggested lamination source: Thomas & Skinner (No connection with them).

I designed transformers, but have no experience with audio.


** If you did, you might know that a standard, tape wound toriodal core auto-tranny would meet the OP's spec with complete ease.


It might weigh 100 pounds.


Phil, if you are so knowledgeable, then design him a transformer and
take his money. Otherwise, shut the fuck up.

 

[Phil Allison]

jla...@highlandsniptechnology.com wrote:

--------------------------------
** Must be "rent a troll" week.

It might weigh 100 pounds.

** Not even if you wound the core from depleted uranium.

Wot a brainless piece of human garbage.



.... Phil

 

[Phil Allison]

John Shithead = another complete asshole wrote:

Since you are bored and don't want to help, go away.

** This donkey's rear end is jus begging to be driven of the NG.



..... Phil

 

[Winfield Hill]

Phil Allison wrote...

** Win is an academic who readily admits to knowing
SFA about audio electronics - and not caring one hoot
about that.

I cared 50 years ago, and designed award-winning
amplifiers, owned the big woofers, etc., but lost
my golden ear decades ago. So yes, now I'm happy
with a class-D amp and a cheap speaker. However,
I designed a 100Vpp 10App DC-10MHz 1000V/us slew-
rate laboratory power amplifier (AMP-70A, reported
in these pages). The design has intrinsically low
distortion, but with its wide bandwidth, also has
a high loop gain at audio frequnecies. A group in
Germany made a few from my design documents, meant
for audio use, and reported 2ppm distortion at full
power at 20kHz. While I may not care a hoot about
audio, I can still create superior "audio" designs.

Also, while we're talking, I am not an academic,
no sir, thank you. I'm a hard-working slob of an
engineer who happens to have worked at Harvard for
many many decades, and co-authored books. I run
an E.E. Lab, and crank out off-the-wall designs.


--
Thanks,
- Win

 

[Winfield Hill]

Phil Allison wrote drivel

Give it a rest Phil.


--
Thanks,
- Win

 

[Phil Allison]

Winfield Hill drivelled:
---------------------------

Phil Allison wrote...

** Win is an academic who readily admits to knowing
SFA about audio electronics - and not caring one hoot
about that.


I cared 50 years ago, and designed award-winning
amplifiers, owned the big woofers, etc., but lost
my golden ear decades ago.

** Really ?

Even more off with the fairies than before.

So yes, now I'm happy
with a class-D amp and a cheap speaker.

** Good for you.

However,
I designed a 100Vpp 10App DC-10MHz 1000V/us slew-
rate laboratory power amplifier (AMP-70A, reported
in these pages).

** No fooling ......

The design has intrinsically low
distortion, but with its wide bandwidth, also has
a high loop gain at audio frequnecies. A group in
Germany made a few from my design documents, meant
for audio use, and reported 2ppm distortion at full
power at 20kHz. While I may not care a hoot about
audio, I can still create superior "audio" designs.

** Fascinating, but totally irrelevant.

Also, while we're talking, I am not an academic,
no sir, thank you. I'm a hard-working slob of an
engineer who happens to have worked at Harvard for
many many decades, and co-authored books.

** Smells very much like an academic to me.....

I run
an E.E. Lab, and crank out off-the-wall designs.

** Like replacing a low cost and effectively perfect audio output transformer with an expensive, SMD mosfet & SMPS nightmare for ZERO advantage ??

Seriously, yours was one of the nuttiest post I have ever seen on this NG.

Plus you still seem to have NO clue why it was so ridiculous.


...... Phil

 

[Phil Allison]

Winfield Hill making an utter ASS of himself again wrote:
-------------------------------------------------------

Phil Allison wrote drivel

** My complaints were rock solid.

You made no attempt to reply to any of them.

One would have to be forgiven for declaring you to be a pompous ass.

Give it a rest Phil.

** FFS never post such absurdities about audio again.

Or else the gloves come off.



..... Phil

 

On Monday, 9 September 2019 01:24:55 UTC+1, Phil Allison wrote:

jla...@highlandsniptechnology.com wrote:

----------------------------------------

** Another fuckwit troll on the NG - yawnnnnn....

if you think Mr. Larkin is a troll you are right off with the fairies

Phil Allison wrote...

** Win is off with the fairies, again.

really?

Posting ridiculous lies and bullshit about an identified poster are not alternatives to having a counter argument.

Unless you simply have no brain.

I'm saying nothing.

 

[John S]

On 9/8/2019 7:28 PM, Phil Allison wrote:

John Shithead is a complete idiot wrote:



If I understand your configuration correctly, you have an
autotransformer driven in a class B connection at the ends. The
transformer will need to have the thinnest laminations you can get in
order to handle the 20kHz.


** Utter nonsense.

It's a wide band audio power tranny, not a SMPS.



You will need to have enough laminations
(core) to not saturate at 20Hz.

** Right, full power at 20Hz happens all the time in audio ...

Strewth.


I suggest the following specifications for your transformer:

Autotransformer (bifilar winding)
20Hz - 20kHz
Current - 10Arms
Voltage rating is not a problem. Even the wire enamel can handle it.
Suggested lamination source: Thomas & Skinner (No connection with them).

I designed transformers, but have no experience with audio.


** If you did, you might know that a standard, tape wound toriodal core auto-tranny would meet the OP's spec with complete ease.


It might weigh 100 pounds.


Phil, if you are so knowledgeable, then design him a transformer and
take his money. Otherwise, shut the fuck up.

Nice reply, Pill.

 

[John S]

On 9/8/2019 7:39 PM, Phil Allison wrote:

John Shithead = another complete asshole wrote:



Since you are bored and don't want to help, go away.



** This donkey's rear end is jus begging to be driven of the NG.



.... Phil

Then get with the driving, Pill.

 

Every once in a while I am reminded of how much I miss the good ole days around here.

 

[John S]

On 9/8/2019 7:28 PM, Phil Allison wrote:

jla...@highlandsniptechnology.com wrote:

--------------------------------
** Must be "rent a troll" week.


It might weigh 100 pounds.


** Not even if you wound the core from depleted uranium.

Wot a brainless piece of human garbage.



... Phil

UN-depleted uranium would be heaver.

 

[John S]

On 9/9/2019 12:52 AM, Phil Allison wrote:

Winfield Hill making an utter ASS of himself again wrote:
-------------------------------------------------------

Phil Allison wrote drivel


** My complaints were rock solid.

You made no attempt to reply to any of them.

One would have to be forgiven for declaring you to be a pompous ass.


Give it a rest Phil.


** FFS never post such absurdities about audio again.

Or else the gloves come off.



.... Phil

Pill, you need a funnel web spider for a pet.

If you beg him, Winfield might let you kiss his feet. Otherwise, you can
go fuck yourself because no one else would suit you.

 

On Sun, 8 Sep 2019 22:52:29 -0700 (PDT), Phil Allison
<pallison49@gmail.com> wrote:

Winfield Hill making an utter ASS of himself again wrote:
-------------------------------------------------------

Phil Allison wrote drivel


** My complaints were rock solid.

You made no attempt to reply to any of them.

One would have to be forgiven for declaring you to be a pompous ass.


Give it a rest Phil.


** FFS never post such absurdities about audio again.

Or else the gloves come off.



.... Phil

Phil, have you designed any interesting audio power amps? Please post
something.

I did one guitar amp, and some intercoms for the C5A and the New York
subway system.

 

[John S]

On 9/9/2019 10:14 AM, jlarkin@highlandsniptechnology.com wrote:

On Sun, 8 Sep 2019 22:52:29 -0700 (PDT), Phil Allison
pallison49@gmail.com> wrote:

Winfield Hill making an utter ASS of himself again wrote:
-------------------------------------------------------

Phil Allison wrote drivel


** My complaints were rock solid.

You made no attempt to reply to any of them.

One would have to be forgiven for declaring you to be a pompous ass.


Give it a rest Phil.


** FFS never post such absurdities about audio again.

Or else the gloves come off.



.... Phil

Phil, have you designed any interesting audio power amps? Please post
something.

I did one guitar amp, and some intercoms for the C5A and the New York
subway system.

Don't hold your breath for a reply that is reasonable and on topic.

 

[John Larkin]

On 9 Sep 2019 10:45:22 -0700, Winfield Hill <winfieldhill@yahoo.com>
wrote:

jlarkin@highlandsniptechnology.com wrote...

We do have the TI eval board and have been abusing
the chip. Haven't blown it up yet. I wouldn't want
to base an aerospace test box on some no-name Chinese
amp board. And I want to include some sensing and
supervision stuff.

Right, of course. But in the absence of TI eval
boards, Chinese boards are useful for prototyping.
Although they don't provide schematics, their
designs are usually pretty close to one of the
eval designs.

We get TI eval boards free! But not as fast as ordering from China.