Recommended alternate electronics group (was Re: Re: Kevin -- Tip: a cheap full load resistor)

#56836

Electronics_101 <> is quite a suitable place to discuss such matters. We also use LTspice (and whatever other tools are necessary or handy, up to and including oscilloscopes and soldering irons) to achieve the understanding.

Donald.
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Show quoted text

----- Original Message -----
From: "rainbowsally" <rainbowsally@...>
To: LTspice@...
Sent: Sunday, August 26, 2012 10:35:53 AM
Subject: Re: [LTspice] Re: Kevin -- Tip: a cheap full load resistor

Received and understood, Helumut.

But it would be nice to be able to have a place to discuss this kind
of
stuff. We can get resistors, caps, and transistors, etc. from vendors,
which is supported here, and in fact we have libraries full of stuff
that includes how to get these things. But no pricing info (which
likely changes all the time so it's no biggie).

What we don't have is crosses for various components that are easy to
look up (from comparisons of power, max voltage, gain where
applicable,
etc) and what if a toaster or a waffle iron ends up being a very
affordable cross for a thousand watt 4 ohm resistor.

If we make that a Spice model, would it suddenly be on topic?

I'm not trying to make problems, Helmut, it should be obvious that I'm
trying to make solutions. Sorry if this topic is aggravating to you in
this forum, but if you created a spinoff group and listed it
officially
on the main page, maybe we could share these interesting plug in
compatible, non commercial crosses and save enough money to buy a
gazillion 2n4401's (200 bucks can buy a lot of zits) from whatever
corporate vendors we have spice libraries for.

This is probably the third or fourth appeal to you on this subject of
where we might share this kind of info and you have not offered a
suggestion or a subforum (like LTSpiceFiles).

Can we compromise on this somehow? The folks here are very interesting
and helpful but keeping track of LTSpice forum members that want to
talk
off list is very inconvenient.


Helmut wrote:

--- In LTspice@..., "aurora_viii"<aurvii@...> wrote:
--- In LTspice@..., Dana Myers<dana.myers@> wrote:

BTW, LCR meter applied to Sony SS-5000F speaker showed a *very*
reactive load over the audio range, likely largely influenced by
the
crossover network. At 1KHz, I saw 14.93 + j 7.851 ohms, at 5KHz
I saw 11.6 - j4.62 ohms. etc.

Cheers.

Dana K6JQ
Be very careful believing what LCR meters say, try disconnecting
the speaker drive unit and measuring that. I predict could be
several hundred uH, or at least a couple
Hello,
Please stop on these threads:

...a cheap full load resistor
...Power Supply Ripple
...audio amp...

Every further message and many of the previous posting may
be deleted soon due to be off-topic.

Best regards,
Helmut




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

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#56838

--- In LTspice@..., Donald H Locker <dhlocker@...> wrote:

Electronics_101 <> is quite a suitable place to discuss such matters. We also use LTspice (and whatever other tools are necessary or handy, up to and including oscilloscopes and soldering irons) to achieve the understanding.

Donald.Hello Donald,

Thanks. That's much better than creating a new group.

Best regards,
Helmut


--
*Plain Text* email -- it's an accessibility issue
()  no proprietary attachments; no html mail
/&#92;  ascii ribbon campaign - <www.asciiribbon.org>

----- Original Message -----
From: "rainbowsally" <rainbowsally@...>
To: LTspice@...
Sent: Sunday, August 26, 2012 10:35:53 AM
Subject: Re: [LTspice] Re: Kevin -- Tip: a cheap full load resistor

Received and understood, Helumut.

But it would be nice to be able to have a place to discuss this kind
of
stuff. We can get resistors, caps, and transistors, etc. from vendors,
which is supported here, and in fact we have libraries full of stuff
that includes how to get these things. But no pricing info (which
likely changes all the time so it's no biggie).

What we don't have is crosses for various components that are easy to
look up (from comparisons of power, max voltage, gain where
applicable,
etc) and what if a toaster or a waffle iron ends up being a very
affordable cross for a thousand watt 4 ohm resistor.

If we make that a Spice model, would it suddenly be on topic?

I'm not trying to make problems, Helmut, it should be obvious that I'm
trying to make solutions. Sorry if this topic is aggravating to you in
this forum, but if you created a spinoff group and listed it
officially
on the main page, maybe we could share these interesting plug in
compatible, non commercial crosses and save enough money to buy a
gazillion 2n4401's (200 bucks can buy a lot of zits) from whatever
corporate vendors we have spice libraries for.

This is probably the third or fourth appeal to you on this subject of
where we might share this kind of info and you have not offered a
suggestion or a subforum (like LTSpiceFiles).

Can we compromise on this somehow? The folks here are very interesting
and helpful but keeping track of LTSpice forum members that want to
talk
off list is very inconvenient.


Helmut wrote:

--- In LTspice@..., "aurora_viii"<aurvii@> wrote:
--- In LTspice@..., Dana Myers<dana.myers@> wrote:

BTW, LCR meter applied to Sony SS-5000F speaker showed a *very*
reactive load over the audio range, likely largely influenced by
the
crossover network. At 1KHz, I saw 14.93 + j 7.851 ohms, at 5KHz
I saw 11.6 - j4.62 ohms. etc.

Cheers.

Dana K6JQ
Be very careful believing what LCR meters say, try disconnecting
the speaker drive unit and measuring that. I predict could be
several hundred uH, or at least a couple
Hello,
Please stop on these threads:

...a cheap full load resistor
...Power Supply Ripple
...audio amp...

Every further message and many of the previous posting may
be deleted soon due to be off-topic.

Best regards,
Helmut




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

Yahoo! Groups Links






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

Yahoo! Groups Links

rainbowsally

#56839

No.  It should be tied directly to this one, Helmut, because the files of interest will always be here and people will surely object to a generic forum requiring LTSpice to see the principles being discussed.

Maybe we should just let the dust settle.  Personally I don't think a single thing posted was any more off topic than most of the discussions around here, and if you're happy, the rest of us apparently are too... with the possible exception of Kevin himself.

How old is he?  Anybody bother to ask?  I wonder, because he had the collector and emitter reversed on one of his transistors but the rest of the circuit was fine.  At least it was as fine as any of the other audio amps currently in our files area.

Helmut wrote:

Show quoted text

--- In LTspice@..., Donald H Locker<dhlocker@...>  wrote:
Electronics_101<>  is quite a suitable place to discuss such matters. We also use LTspice (and whatever other tools are necessary or handy, up to and including oscilloscopes and soldering irons) to achieve the understanding.

Donald.Hello Donald,

Thanks. That's much better than creating a new group.

Best regards,
Helmut


--
*Plain Text* email -- it's an accessibility issue
()  no proprietary attachments; no html mail
/&#92;  ascii ribbon campaign -<www.asciiribbon.org>

----- Original Message -----
From: "rainbowsally"<rainbowsally@...>
To: LTspice@...
Sent: Sunday, August 26, 2012 10:35:53 AM
Subject: Re: [LTspice] Re: Kevin -- Tip: a cheap full load resistor

Received and understood, Helumut.

But it would be nice to be able to have a place to discuss this kind
of
stuff. We can get resistors, caps, and transistors, etc. from vendors,
which is supported here, and in fact we have libraries full of stuff
that includes how to get these things. But no pricing info (which
likely changes all the time so it's no biggie).

What we don't have is crosses for various components that are easy to
look up (from comparisons of power, max voltage, gain where
applicable,
etc) and what if a toaster or a waffle iron ends up being a very
affordable cross for a thousand watt 4 ohm resistor.

If we make that a Spice model, would it suddenly be on topic?

I'm not trying to make problems, Helmut, it should be obvious that I'm
trying to make solutions. Sorry if this topic is aggravating to you in
this forum, but if you created a spinoff group and listed it
officially
on the main page, maybe we could share these interesting plug in
compatible, non commercial crosses and save enough money to buy a
gazillion 2n4401's (200 bucks can buy a lot of zits) from whatever
corporate vendors we have spice libraries for.

This is probably the third or fourth appeal to you on this subject of
where we might share this kind of info and you have not offered a
suggestion or a subforum (like LTSpiceFiles).

Can we compromise on this somehow? The folks here are very interesting
and helpful but keeping track of LTSpice forum members that want to
talk
off list is very inconvenient.


Helmut wrote:
--- In LTspice@..., "aurora_viii"<aurvii@>  wrote:
--- In LTspice@..., Dana Myers<dana.myers@>  wrote:
BTW, LCR meter applied to Sony SS-5000F speaker showed a *very*
reactive load over the audio range, likely largely influenced by
the
crossover network. At 1KHz, I saw 14.93 + j 7.851 ohms, at 5KHz
I saw 11.6 - j4.62 ohms. etc.

Cheers.

Dana K6JQ
Be very careful believing what LCR meters say, try disconnecting
the speaker drive unit and measuring that. I predict could be
several hundred uH, or at least a couple
Hello,
Please stop on these threads:

...a cheap full load resistor
...Power Supply Ripple
...audio amp...

Every further message and many of the previous posting may
be deleted soon due to be off-topic.

Best regards,
Helmut




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

Yahoo! Groups Links





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

Yahoo! Groups Links




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

Yahoo! Groups Links

#56841

You can either have quality, or quantity. It would be a shame to give up the quality this group has, especially after preserving it for such long (and, hopefully, for even longer).

Vlad

#56843

On 8/26/2012 1:45 PM, Donald H Locker wrote:

Electronics_101 <> is
quite a suitable place to discuss such matters. We also use LTspice
(and whatever other tools are necessary or handy, up to and including
oscilloscopes and soldering irons) to achieve the understanding.

Donald.
-
In keeping with Helmut's guidance that this group is a LTspice support
group and extended electronic design discussions are discouraged I
suggest people who have electronic design questions visit
<>.

This is from the groups FAQ.

"What kind of questions can I ask here?
<>

This site is for electronics and electrical engineering professionals,
students, and enthusiasts. We ask and answer questions about electrical
and electronics engineering topics, which include electronics, physical
computing, and those working with microcontrollers, Arduinos and
embedded systems. We feel the best Electronics Design questions have a
schematic, links to pertinent datasheets or some C code in them, but if
your question generally covers …

  * a specific electronics design problem
  * the theory and simulation of electromagnetic forces
  * a communication scheme
  * the writing of firmware for bare-metal or RTOS applications

and it is not about …

  * a shopping or buying recommendation
  * consumer electronics such as media players, cell phones or smart
    phones, except when designing these products or modifying their
    electronics for other uses
  * Programming software for a PC

… then you’re in the right place to ask your question!"

I believe visitors to stackExchange will find they discuss a much larger
variety of electronic design questions than the Electronics 101 mail group.


Howard

#56858

As an alternative electronics group for discussion of all things audio, 
head over to www.diyaudio.com. You can bat around ideas with Nelson 
Pass, Bob Cordell, John Curl and many other notable audio designers. 
Spice simulation is tolerated there as well but most believe in actually 
building the circuit and measuring it.

Show quoted text

On 8/26/2012 2:59 PM, imbvlad wrote:

You can either have quality, or quantity. It would be a shame to give 
up the quality this group has, especially after preserving it for such 
long (and, hopefully, for even longer).

Vlad

#56860

As an alternative electronics group for discussion of all things audio,
head over to www.diyaudio.com. You can bat around ideas with Nelson
Pass, Bob Cordell, John Curl and many other notable audio designers.
Spice simulation is tolerated there as well but most believe in actually
building the circuit and measuring it.
I can understand what you're saying, but not why you are quoting me.


Vlad

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Recommended alternate electronics group (was Re: Re: Kevin -- Tip: a cheap full load resistor)