Hitachi MOSFET application note 1989
David Eather
I am trying to get a copy of a application note by Hitachi for a MOSFET
amp published in 1989. You probably have seen amps designed with the
note's influence - the voltage gain stage is a long tailed pair
(differential amp) driven from the input LTP. Just about all the recent
AUS. magazine designs have used it.
Anyway, can anyone help with a link or a copy of this note? I have
"googled" but all I can find is some sod who wants 12 Euro for someone
else's work.
All help appreciated
David Eather
Lord Garth
"David Eather" <eat...@tpg.com.au> wrote in message
news:-pCdnWdsGZ2WFtLX...@supernews.com...
...and the part number would be??????
David Eather
Sorry Lord Garth, I couldn't find a part number, hence the providing of
a description
David Eather
MOSFETs 2SJ49 and 2SK134
Franc Zabkar
put finger to keyboard and composed:
>I am trying to get a copy of a application note by Hitachi for a MOSFET
>amp published in 1989.
Have you tried the Wayback Machine?
I've found a lot of documents in the archives that have disappeared
from the live Web.
- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
Phil Allison
"David Eather"
>>
>>> I am trying to get a copy of a application note by Hitachi for a MOSFET
>>> amp published in 1989.
** It was first published a lot earlier than that.
> The only other detail I have is that the note was published for the
> MOSFETs 2SJ49 and 2SK134
** The other devices were 2SA970 and 2SC2240.
The original app note schematic was always hard to find on the net - I
found a reproduction of it on a hobby web site by chance a few years ago.
No sign of it now.
..... Phil
David Eather
> On Sun, 05 Jul 2009 03:01:45 +1000, David Eather <eat...@tpg.com.au>
> put finger to keyboard and composed:
>
>> I am trying to get a copy of a application note by Hitachi for a MOSFET
>> amp published in 1989.
>
> Have you tried the Wayback Machine?
>
> I've found a lot of documents in the archives that have disappeared
> from the live Web.
>
> - Franc Zabkar
I didn't know about the Wayback Machine - I gave it a good try but no joy.
Franc Zabkar
put finger to keyboard and composed:
>Franc Zabkar wrote:
>> On Sun, 05 Jul 2009 03:01:45 +1000, David Eather <eat...@tpg.com.au>
>> put finger to keyboard and composed:
>>
>>> I am trying to get a copy of a application note by Hitachi for a MOSFET
>>> amp published in 1989.
>>
>> Have you tried the Wayback Machine?
>>
>> I've found a lot of documents in the archives that have disappeared
>> from the live Web.
>>
>> - Franc Zabkar
>
>I didn't know about the Wayback Machine - I gave it a good try but no joy.
Not many people are aware of it, even though it may potentially be a
bigger resource than the Internet itself.
At the moment there is no text search, but you can find all the PDFs,
for example, that were archived from a particular site over several
years by using the Advanced Search options.
Try this:
http://web.archive.org/web/*re_pd_sr_1nr_30/http://www.hitachi.com*
Ross Herbert
:Hello All,
It was bloody hard to come by even back then. I only have a photocopy of it and
there are 45 A4 pages in total. I have posted it to abse if that will help
(1.9Mb PDF file)
Phil Allison
"Ross Herbert"
>
> It was bloody hard to come by even back then. I only have a photocopy of
> it and
> there are 45 A4 pages in total. I have posted it to abse if that will help
> (1.9Mb PDF file)
** Downloaded and read, amazing I've never seen it published anywhere
before.
Shame there is no date on the doc, but since Hitachi first released their
"power mosfets" better known as " lateral mosfets " back in 1977 - the
actual publication date is close to then.
Must have been the most avidly read app note in history by audio power amp
designers in the late 70s and beyond.
..... Phil
christofire
"Ross Herbert" <rher...@bigpond.net.au> wrote in message
news:klp3551kauulddse4...@4ax.com...
Thanks,
Chris
David Eather
Many Thanks. I've got it now (took a while to figure out abse).
Ross Herbert
:
:"Ross Herbert"
:
If you can make out the phone number on the Plessey Components sticker on the
front page you will see that it was a six digit number. Six digit numbers had
disappeared in Australia by the mid to late 1970's.
Clint Sharp
<rher...@bigpond.net.au> writes
>It was bloody hard to come by even back then. I only have a photocopy of it and
>there are 45 A4 pages in total. I have posted it to abse if that will help
>(1.9Mb PDF file)
--
Clint Sharp
Eeyore
David Eather wrote:
> Hello All,
>
> I am trying to get a copy of a application note by Hitachi for a MOSFET
> amp published in 1989.
Which variant ? They published several IIRC. I have paper copies here but
can't scan right now.
Graham
--
due to the hugely increased level of spam please make the obvious
adjustment to my email address
Eeyore
David Eather wrote:
A bit academic since Hitachi no longer make those lateral mosfets and their
example designs were a bit primitive, though reasonable for the date of
publication. Amp design has moved on several generations since then.
Franc Zabkar
<rher...@bigpond.net.au> put finger to keyboard and composed:
>On Sun, 05 Jul 2009 03:01:45 +1000, David Eather <eat...@tpg.com.au> wrote:
>:I am trying to get a copy of a application note by Hitachi for a MOSFET
>:amp published in 1989.
>
>It was bloody hard to come by even back then. I only have a photocopy of it and
>there are 45 A4 pages in total. I have posted it to abse if that will help
>(1.9Mb PDF file)
Would you mind if I uploaded it to my web space?
Trevor Wilson
"Franc Zabkar" <fza...@iinternode.on.net> wrote in message
news:75b755tlnfobpomfk...@4ax.com...
> On Mon, 06 Jul 2009 12:38:42 GMT, Ross Herbert
> <rher...@bigpond.net.au> put finger to keyboard and composed:
>
>>On Sun, 05 Jul 2009 03:01:45 +1000, David Eather <eat...@tpg.com.au>
>>wrote:
>
>>:I am trying to get a copy of a application note by Hitachi for a MOSFET
>>:amp published in 1989.
>>
>>It was bloody hard to come by even back then. I only have a photocopy of
>>it and
>>there are 45 A4 pages in total. I have posted it to abse if that will help
>>(1.9Mb PDF file)
>
> Would you mind if I uploaded it to my web space?
**I believe you need to direct your question to Hitachi. They own the
copyright. And, thanks to the bizarre laws surrounding copyright, they have
75 years to determine who can publish it, if I'm not mistaken.
--
Trevor Wilson
www.rageaudio.com.au
Phil Allison
"Eeyore"
David Eather wrote:
>
>>
>> I am trying to get a copy of a application note by Hitachi for a MOSFET
>> amp published in 1989. You probably have seen amps designed with the
>> note's influence - the voltage gain stage is a long tailed pair
>> (differential amp) driven from the input LTP. Just about all the recent
>> AUS. magazine designs have used it.
>>
>> Anyway, can anyone help with a link or a copy of this note? I have
>> "googled" but all I can find is some sod who wants 12 Euro for someone
>> else's work.
>>
>
** BULLSHIT !!!
Hitachi lateral mosfets ( in TO220 and TO3P ) are still made and sold under
the " Renesas " brand.
TO3 metal pack lateral mosfet devices are readily available from Exicon and
Semelab - these are good substitutes in any of the Hitachi circuits.
In Australia, Altronics sells the former and Farnell sell the latter.
See:
http://www.altronics.com.au/index.asp?area=prod&grp=104
> and their example designs were a bit primitive,
** Pompous crap.
> Amp design has moved on several generations since then.
** Moved on maybe, but all down hill.
..... Phil
Ross Herbert
wrote:
:On Mon, 06 Jul 2009 12:38:42 GMT, Ross Herbert
:<rher...@bigpond.net.au> put finger to keyboard and composed:
:
:>On Sun, 05 Jul 2009 03:01:45 +1000, David Eather <eat...@tpg.com.au> wrote:
:
:>:I am trying to get a copy of a application note by Hitachi for a MOSFET
:>:amp published in 1989.
:>
:>It was bloody hard to come by even back then. I only have a photocopy of it
and
:>there are 45 A4 pages in total. I have posted it to abse if that will help
:>(1.9Mb PDF file)
:
:Would you mind if I uploaded it to my web space?
:
:- Franc Zabkar
It is OK with me Franc.
While Trevor's warning re copyright might technically apply, I can't see Hitachi
contesting your publication since the devices are no longer manufactured by
them.
Ross Vumbaca
Ross Herbert wrote:
> If you can make out the phone number on the Plessey Components sticker on the
> front page you will see that it was a six digit number. Six digit numbers had
> disappeared in Australia by the mid to late 1970's.
There were still six digit phone numbers in my area until the late 80s..!
Regards,
Ross..
Mark Harriss
And the early nineties in Queensland.
Mark Harriss
I don't have ABSE available from my ISP, any chance of a website to
download it from?.
GeoffC
>
> I don't have ABSE available from my ISP, any chance of a
> website to download it from?.
>
Me too if possible please.
Ross Herbert
the mid to late 70's.
I was referring to capital city/metropolitan phone numbers. Plessey Components
(the supplier of the app note) were in Villawood, and this being a large light
industrial area, would have been a prime candidate for growth in telephone
numbers in the late 70's. I don't know when the exchange serving Villawood was
converted from 6 digit to 7 digit working but I think it would have been before
1980. In WA we were modifying exchanges ready for 7 digit working in 1972 and
this changeover commenced nationally around the middle of that decade if my
memory isn't too vague. If anybody has more definite info I would like to hear
it.
I was working in the Electronics Design section in 1978-80 and I am sure that's
when we obtained the Hitachi app note copy.
On Mon, 13 Jul 2009 09:18:12 +1000, Mark Harriss <bi...@blartco.co.uk> wrote:
Ross Herbert
:
:>
:> I don't have ABSE available from my ISP, any chance of a
:> website to download it from?.
:>
:
:Me too if possible please.
I don't have a website and I haven't any plans to set one up.
With any luck, Franc will do this and let everyone know where to find it
(perhaps?).
Phil Allison
"Ross Herbert"
> :>
> :> I don't have ABSE available from my ISP, any chance of a
> :> website to download it from?.
> :Me too if possible please.
>
> I don't have a website and I haven't any plans to set one up.
** Attachments posted on ABSE normally turn up here:
http://www.usenet-replayer.com/groups/alt%2Ebinaries%2Eschematics%2Eelectronic.html
This one seem to be the exception - maybe it was too big.
..... Phil
David Eather
I might be able to help in a few weeks. Alternately I can email to
anyone who wants.
Phil Allison
"David Eather is an autistic PIG "
> I you had read Eric Vastmasd's post with an open mind you would have seen
> it was not an insult to you but a jab at PN.
** My god - that is just totally insane.
> Also, you response to EV's post is raciest,
** Really ??
Cos of the one word " wog " ??
More insanity.
> which if it was done in a forum taken seriously in Australia, might be not
> just actionable but also illegal.
** Got news for you - you stupid, autistic fuckhead
Calling some fuckwit troll who has just posted gratuitous personal abuse in
public forum a " WOG " is neither racist nor the slightest bit illegal.
Half witted, pig ignorant " net cops" like YOU can go drop fucking dead.
Go back to your STUPID code scribbling -
you vile, autistic PILE OF SHIT !!
..... Phil
GeoffC
>
> I might be able to help in a few weeks. Alternately I can
> email to anyone who wants.
Thanks, email is geoffjunkster at gmail.com
Ross Vumbaca
Ross Herbert wrote:
> Yes, many outer metro or regional exchanges were 6 digit working much later than
> the mid to late 70's.
>
> I was referring to capital city/metropolitan phone numbers. Plessey Components
I do live in the metropolitan area of Sydney (where we still held
6-digit numbers until the 80s) :-)
Regards,
Ross..
Ross Herbert
wrote:
:Hi Ross,
Well, that just proves that there is always an exception to the rule. It depends
upon whether the particular exchange area you live in was stagnant in growth or
not - the area code was probably padded with an extra digit to make up the 7
digits. The fact is that Telecom (or PMG as it was then) was preparing the
network - Australia wide - for 7 digit numbering back in the early 70's and the
switch to 7 digits occurred in the mid to late 70's in MOST city/metro areas.
Here's an extract from a 1978 newsletter by the Action for Public Transport
(NSW) group. The entry of events for May the 14 contains both 6 and 7 digit
number examples.
--------------------------------------------------------------------------------
MEDIA RELEASE / NEWSLETTER / April 1978
--------------------------------------------------------------------------------
WHAT'S ON
SNIP
14 May
RALLY FOR BOTANY BAY-Walkathon, bike ride, energy fair, picnic. Marchers
(sponsored) will start from Dolls Point, Banksmeadow Park, & Tasker Park, and
cyclists from Belmore Pk., Central, at 10 am, converging on Cook Pk.,
Brighton-le-Sands. Enq. Don Morison, 95 5731, or FOE, 235 8037.
David L. Jones
> On Mon, 13 Jul 2009 00:08:02 +0000 (UTC), GeoffC <nos...@gmail.com>
> wrote:
>
>>
>>>
>>> I don't have ABSE available from my ISP, any chance of a
>>> website to download it from?.
>>>
>>
>> Me too if possible please.
>
> I don't have a website and I haven't any plans to set one up.
Most ISP's give free web space.
Don't need a web page or site, just FTP the files to a new directory on your
ISP server and everyone can see them.
Alternatively, use any one of the countless free file hosting sites, like
this one:
http://www.filefactory.com/
> With any luck, Franc will do this and let everyone know where to find
> it (perhaps?).
If someone wants to email it to me I can put it up on my site.
Doesn't show up on my ABSE server.
Dave.
--
================================================
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David Eather
The application note is here:
Mark Harriss
Thanks!
KR
Thank you VERY much for your efforts in putting this up !