Driver to drive?

[Terry Given]

legg wrote:

On 20 Oct 2004 14:09:58 -0700, sina1358@yahoo.com (Sinatra Benigni)
wrote:


Hi
Does anybody have any datasheets or documentations about each of the folowing
SI-Thyristors?

RT201
RT103N

Thanks
Sinatra Benigni


supposedly mfrd by NGK Insulators - rough data in article:

http://hotta.es.titech.ac.jp/~ehotta/pdf/PPPS2001/SI-Thy.pdf

but no data from NGK

http://www.ngk.co.jp/english/products/electron/ele_part/index.html

SIT is generally considered to be the designation of the Static
Induction Transistor. MOS-controlled thyristors are more commonly
refered to as MCT.

RL

I've read a couple of papers on these particular SITh devices, and
likewise been unable to find any actual data, from NGK or anyone else.
This lead me to the conclusion they dont really exist in production
quantities. Hopefully I am wrong. Static Induction devices are
intriguing in that they offer (in theory) a lot more GBW than anything
else on offer, but their practical development seems to be taking ages.
Mind you, in 1993 I started looking into MCTs, and they havent really
gone anywhere either. Apparently the clever jap that came up with
SI-devices wasnt believed by many professionals, for a long time.

Cheers
Terry

 

[Terry Given]

Tony Williams wrote:

In article <2tmi34F21dppeU1@uni-berlin.de>,
Paul Burke <paul@scazon.com> wrote:


Frank Bemelman wrote:

I was afraid someone would suggest that. Thank heavens it
is not very important. For some silly reason, I don't like
555's. There no explanation, alas.


[snip]

But 555's- I think I've told you about the Electronics GCSE (16
year olds' exam) - two papers ALL concerning 555s- they didn't
expect you to know Ohm's Law, but you DID have to know the 555
equations!


Come on chaps...... there's no shame in using a 555, and
it was designed to do exactly the sort of thing that Frank
needs to do.

Frank is muttering about using a comparator, etc. Come
on now, there's a comparator built into the 555, complete
with a 2/3Vcc Vref, R-S flip-flop for clean switching, and
an output stage. What more could you want?

an output stage that doesnt attempt to short-circuit the supply rails
every time it switches, and decent rise/fall times. The cmos parts are
great in this respect, but can I have one that runs from +36Vdc please.

When I was at uni I used to build turbo-timers for friends cars using
555's. all done on veroboard, and "potted" with neutral-cure RTV.

a couple years back a buddy of mine started operating pool tables, and
wanted a "wallop" alarm, so he bought a bunch of Dick Smith 555 timer
kits, and I modified them to suit.

The great thing about a 555 is it doesnt need any software. And an be
debugged rapidly.

Cheers
Terry

 

[Rich Grise]

On Wed, 20 Oct 2004 14:58:27 -0700, Michael Bails wrote:

Hello Group,

Could someone please advise me on creating a spice3 output file
(through the unix format) which prints a given output with no spaces
or page breaks. For example, I'm trying to determine the real and
imaginary parts of the admittance in a circuit and output it to a
file, so I use the following command:

print i(v1)/v(1) > ../home/result.dat

When I view the result.dat file, it looks good, however, there is a
np> after the 54th entry. I'm trying to get a printout that has no
page break. I'm trying to take this file and manipulate it but the
new page problem keeps arising creating errors in my code that is
trying to read this data. If I use less then 54 data points, I don't
get the <np>, however, some of my analyses require many more then 54
data results.

$ grep -v "^<np>$" result.dat > OUTPUT

Good Luck!
Rich

 

[Terry Given]

Frank Bemelman wrote:

"Tony Williams" <tonyw@ledelec.demon.co.uk> schreef in bericht
news:4d00c029cftonyw@ledelec.demon.co.uk...

In article <2tmi34F21dppeU1@uni-berlin.de>,
Paul Burke <paul@scazon.com> wrote:


Frank Bemelman wrote:

I was afraid someone would suggest that. Thank heavens it
is not very important. For some silly reason, I don't like
555's. There no explanation, alas.

[snip]

But 555's- I think I've told you about the Electronics GCSE (16
year olds' exam) - two papers ALL concerning 555s- they didn't
expect you to know Ohm's Law, but you DID have to know the 555
equations!

Come on chaps...... there's no shame in using a 555, and
it was designed to do exactly the sort of thing that Frank
needs to do.

Frank is muttering about using a comparator, etc. Come
on now, there's a comparator built into the 555, complete
with a 2/3Vcc Vref, R-S flip-flop for clean switching, and
an output stage. What more could you want?


You are absolutely right of course. It's not a matter of shame,
if it were, I would sand off the number There are two parts
that I don't like. 555's and zeners. I fully admit that such is
utterly stupid.

Now I have to look at the circuit made by Fred.

are avalanche diodes OK? if so, prehaps you might want to reconsider
your anti-zener bias (get it) as most arent.

Actually, just about every time I have tried to use a zener I have given
up in disgust. My favourite misuse is a 4.7V zener used to "clamp" an
input to a micro. read the datasheet and do the sums, then pick a clamp
that actually works. I once had to fix a "design" (I'm being generous
here) that had a 5V wall-wart output with a long cable "protected" at
the cpu end with a large 5V1 transorb; the micro kept dying, in a random
manner. The root cause was spikes on the 5V line causing latchup. when
asked why the transorb didnt work, I highlighted the bit in the
datasheet that showed the transorb clamp voltage - which of course is
way, way above 5.1V. It was actually cheaper to use a 78L05 and a 9V
wall-wart, and this actually worked too.

cheers
Terry

 

[Rich Grise]

On Thu, 21 Oct 2004 00:13:34 +0000, Clarence wrote:

"Rich Grise" <rich@example.net> wrote in message
newsan.2004.10.21.00.12.50.21378@example.net...
On Wed, 20 Oct 2004 21:04:44 +0000, Clarence wrote:


"Bob Stephens" <stephensyomamadigital@earthlink.net> wrote in message
news:1gwa3hseykppw$.rylhdfpbpfoz.dlg@40tude.net...

And of course:

etc.
lack of Googling
including top posting,
1 to start a flame war about every arcane netiquette violation

AND
1 to try to assert himself as an Alpha Male, and order others to comply
with
his twisted sense of reality.

There are three of these on this group!

The want to be top DOG, and someone else must always clean up after them.

Four.


Gee fred, I didn't know you wanted to be included!
I wasn't aware you felt left out.
Okay, if you say so. FOUR!

This was Rich, dimwit.

That's me, by the way.

Do you read headers or anything?

Republican.

 

[Ken Smith]

In article <cl6d27$qjt$1@means.mit.edu>,
Terran Melconian <terran@mit.edu> wrote:
[....]

If I had to do it, I wouldn't use a diode at all. I'd put a
normally-open relay which closes only when the battery is connected
correctly. Sure, this can slow down the startup a little, but since the
time required for the user to physically connect the battery is going to
be measured in tens of seconds, I can't see that it would matter.

Does this not work in practice for reasons I haven't thought of?

It has been used in real products. It works ok.

--
--
kensmith@rahul.net forging knowledge

 

[Jonathan Kirwan]

On Wed, 20 Oct 2004 21:25:16 GMT, Joerg <notthisjoergsch@removethispacbell.net>
wrote:

A good transistor indeed. But be careful with anything other than hobby
designs. Even Digikey has gently tapped the last order bell on the 2N2369A.

Yes, I saw that, too. I think my TO-18's are going the way of the dinosaur.

Jon

 

[John Larkin]

On Wed, 20 Oct 2004 18:45:16 GMT, "Genome" <genome@nothere.net> wrote:

"John Larkin" <jjlarkin@highSNIPlandTHIStechPLEASEnology.com> wrote in
message news:no7dn0d87eksikcjb07ppokg4nqn44hqkb@4ax.com...
| On 18 Oct 2004 13:23:00 -0700, oatteaseffen@hotmail.com (Paul) wrote:
|
| > and the "more-is-better" approach to using NFB,
|
| More is better, unless it oscillates.
|
| John
|
|

Whoops..... that's a bit simplistic.

DNA

Well, this *is* a trollgroup.

John

 

[Rich Grise]

On Wed, 20 Oct 2004 19:41:55 -0700, John Larkin wrote:

On Wed, 20 Oct 2004 18:45:16 GMT, "Genome" <genome@nothere.net> wrote:


"John Larkin" <jjlarkin@highSNIPlandTHIStechPLEASEnology.com> wrote in
message news:no7dn0d87eksikcjb07ppokg4nqn44hqkb@4ax.com...
| On 18 Oct 2004 13:23:00 -0700, oatteaseffen@hotmail.com (Paul) wrote:
|
| > and the "more-is-better" approach to using NFB,
|
| More is better, unless it oscillates.
|
| John
|
|

Whoops..... that's a bit simplistic.

DNA


Well, this *is* a trollgroup.

"I wouldn't join to a club that would accept the likes of me."

- Groucho Marx

Cheers!
Rich

 

[Rolavine]

From: Robert Monsen rcsurname@comcast.net

"Your Highness, I have no need of this hypothesis."
- Pierre Laplace (1749-1827), to Napoleon,
on why his works on celestial mechanics make no mention of God.

I like that quote, thank you!

Rocky

 

[Jonathan Kirwan]

On 20 Oct 2004 18:50:42 GMT, arthurj@aol.comet.net (James Arthur) wrote:

Jon, the keyword you seek was there, posted just a tad below...

With your new prodding I decided to just search for "1971" and found it!
Thanks!

Searching the transcript for "videotape" will call up the relevant
remarks.

The _3rd_ instance (sorry 'bout that) will take you to the text: "MEET THE
PRESS, April 18, 1971," where John Kerry's comments are transcribed.


Either this, or perhaps his 6/30/71 debate with John O'Neill:
rtsp://video.c-span.org/project/c04/c04_rwh081504.rm

I don't (and won't) install real-audio/video on my machine here. This will
either have to wait until I can set up a different machine for this task. If
you can put in the text, that would be great, but I'd understand if that's
not
reasonable.

Googling for "kerry cavett debate transcript" yields a number of useful
sites, the first of which is:

http://ice.he.net/~freepnet/kerry/index.php?topic=KerryONeill

Skimming past Mr. Cavett's introduction, O'Neill begins registering his
complaints
shortly into his opening remarks.

I can see that things are somewhat clearer here. I also see that the 'modern'
Kerry is saying that there was a good deal of anger, and less accuracy, in words
he used earlier. Perhaps understandable, given his age then and far more
limited perspective at the time. And as he pointed out on the April 18th, 2004
interview (on the exact anniversary of his 1971 Meet the Press interview, I
note), his use of the exact term "War Criminal" was applied to those who ordered
and signed off on things, more than others. Waffling? Perhaps.

My own feeling about this is that Kerry was obeying orders, as should anyone
unless they are absolutely clear that it violates their oath to the US to obey
it. It's deadly serious to do otherwise. A life or death kind of thing. The
taint of "war crimes" inures more to those who give such orders, as Kerry noted
in his reply. Soldiers in the field simply don't have the perspective or the
authority to change or disobey orders.

Thanks! Much better case that the earlier posters were able to muster! I
respect your contribution here and it does make a modest case.

Jon

 

[Fred Bartoli]

"Frank Bemelman" <f.bemelmanx@xs4all.invalid.nl> a écrit dans le message de
news:4176e015$0$36861$e4fe514c@news.xs4all.nl...

"Spehro Pefhany" <speffSNIP@interlogDOTyou.knowwhat> schreef in bericht
news:tjjdn0tuobc5jg3qleon4nhkgmjqt0sfb5@4ax.com...
On Wed, 20 Oct 2004 18:02:42 +0200, the renowned "Frank Bemelman"
f.bemelmanx@xs4all.invalid.nl> wrote:

Good point, about the bouncing. This question was also posted on a
Dutch newsgroup, by someone else, and another poster suggested to use
a sot-23 pic, like the PIC10F200 (+ regulator).

Nice idea to use the PIC as a pulse generator. BTW, do you have a good
design for a reliable pulse generator to reset the PIC? ;-)

I found this one, looks pretty good:


http://ecatalog.squared.com/fulldetail.cfm?partnumber=8501XTE1#characteristics

Does PIC stands for Pneumatic Industrial Controler ?


--
Thanks,
Fred.

 

[Rich Grise]

On Wed, 20 Oct 2004 21:01:13 -0700, Fox zhou wrote:

As shown in the following chart, there is a trigger signal (a pulse)
may occur at any time in the cycle of a 100MHz square wave (10ns
period, 50% duty cycle). I want to measure the delay time between the
rising edge of the square wave and the trigger falling edge. (t marked
in the chart).


|t|
--------__________

______-----_____-----_____
|<-10ns-->|
| 1 cycle |

I'd like to hear any ideas from you to solve this problem.

I'm trying to use the logic gate to capture this interval and charge
the capacitor this period of time. Then the elapsed time is recorded
in the capacitor a voltage. But it seems difficult to acquire the
logic and control the charging and discharging. Do you have a


Chart: [missing]

Just use a Tektronix scope with at B sweep.

Cheers!
Rich

 

[Paul Burke]

Joerg wrote:

Hi Klaus,

Yes - they have been launched in the TSSOP footprint (5x6mm).


Right, and they are a bear to solder in a prototype setting. Once in
there I treat TSSOP chips like uncooked eggs so I never ever destroy one
and have to change it out.

Not really, just solder the corners then (gently) drag the wetted tip
across the pins. Clean up (gently) with solder wick if necessary( hint-
use a larger tip for this, or you risk getting the braid soldered on and
not having the heat to free it!)

Agreed they are buggers to unsolder though, at least without the proper
unsoldering tip for that size.

Paul Burke

 

[Anders F]

"Frank Bemelman" <f.bemelmanx@xs4all.invalid.nl> wrote in message

I'm surprised that one exists. Small package too, 7mm x 4mm. It
looks challenging to get rid of the heat, even at 95% efficiency.

Say 8A @ 30mR (didn't check the actual value) - that's under 2W...
And powerplanes/copper fills are quite effective heat-spreaders (try solder
a plane with a tiny tip ;-)

/Anders

--
Thanks, Frank.
(remove 'x' and 'invalid' when replying by email)

 

[Winfield Hill]

Jonathan Kirwan wrote...

Joerg wrote:

A good transistor indeed. But be careful with anything other than hobby
designs. Even Digikey has gently tapped the last order bell on the 2N2369A.

Yes, I saw that, too. I think my TO-18's are going the way of the dinosaur.

ST, Central Semiconductor and Continental Devices (CDIL) still make
the metal TO-18, along with the pn2369A TO-92 version. Mouser stocks
the ST, Central and Fairchild parts. ST's metal TO-18 2n2369A costs
$0.44 ($0.30 for 1k) and Central's costs $0.26, 2k pieces. Central's
pn2369a is $0.27 ($0.12 for 1k) and Fairchild's pn2369a costs 9 cents
and 3.1 cents qty 1k. For sot-23 parts Mouser has Central's cmpt2369
(18 cents 1k) and Fairchild's mmbt2369a (7 cents each, 2.5 cents 2k).

ON Semi makes the mps2369 (TO-92, at DigiKey 6.9 cents 1k) and their
mmbt2369lt1 (4.1 cents, 3k). DigiKey stocks Zetex's fmmt2369 and
their sot-323 zumt2369act (smaller packages have longer part numbers).

Continental Device India (CDIL) makes all packages, although Mouser
and DigiKey don't carry them, try hkinventory.com. And Hi-Sincerity
Microelectronics cranks out these parts in Taiwan for the Pacific rim.

Don't forget ON Semi's mmpq2369, four '2369 transistors in a 16-soic.

So it's fair to say the '2369 transistor is well and thriving nicely.
The production quantities are *massive* -- not a hobbiest-only part!

Now, how about those Red Sox, eh?



--
Thanks,
- Win

(email: use hill_at_rowland-dotties-org for now)

 

[John Fields]

On Wed, 20 Oct 2004 23:26:04 GMT, "Clarence" <no@No.com> wrote:

http://www.linear.com/index.jsp

I am in no way associated with this company.

---
Much to their credit.

--
John Fields

 

[Fred Bloggs]

Tom Seim wrote:

You keep telling us it's there; that's all we've been hearing.
WHERE'S THE BEEF!!!

The beef is that US cannot publicize the American participants because
of Privacy Law concerns. Volcker will sometime around 6/05 they say.


Translation: YOU DON'T HAVE ANYTHING!!!!

Come back when you've got something, fredrook.

We do *know* that American business was involved. No one is really
interested in pleasing you. You have produced nothing of merit so far-
you are a worthless parasite and lackey.

When the Dems have nothing else they resort to innuendo
and outright slander. Just like you, fredrook.

Nope- that is the character of Republicans these days- and
the small bits of offal such as yourself.


Right, Dan Rather told you that.

Nope- that is more than obvious from numerous scandals that
have arisen. Take a look at that sorry-assed loser Karl Rove-
clearly some kind of hormone deficient freak. Looks like he may
be going to jail this time. He will not last very long outside
solitary confinement.


[...ehh shut the hell up- fatass blowhard illiterate...]


Running low on insults, huh? You have to start plagarizing mine!
LOL!!

Speaking of plagiarism- that's /your/ life story. We have caught you in
numerous lies, all of your phony sources have been impeached, you
understand very little about the major issues. You are a single issue
voter and prostitute for the Bush campaign. Your death by cancer will be
very painful.


You're in your usual state of confusion, fredrook. The lies are yours.
I have called you on them. I challenged you to a wager - you slithered
away, tail between legs (to mix animal metaphors). The challenge is
still on - do you need a reminder as to what it was (probably do, with
your Russian-grade memory).

Your are the laughing stock of SED. Since you have no other life that
has to be devastating.

Ehh- shoot your mouth off, phony. All you do is confirm what most people
know about you already. That would be Seim, Durban, Clarence, Gathright,
Yanik, and other mentally deficient riffraff- that is quite the group.

 

[Pat Ford]

"Bob Stephens" <stephensyomamadigital@earthlink.net> wrote in message
news:rz9oeezrjv6m$.uxvsb7ngf8nw$.dlg@40tude.net...

On Thu, 14 Oct 2004 11:02:53 GMT, Roger Hamlett wrote:

"Joerg" <notthisjoergsch@removethispacbell.net> wrote in message
news:4Ysbd.4158$6q2.2333@newssvr14.news.prodigy.com...
Hi Mr.P.V.,

Ralph explained circuitry options. As to calibration data the only ways
I see:

A: Find a decent forum on the web where some knowledgeable techs hang
out who could give you the fuel injector flow information.

B: Drive under a typical condition where you know the gas mileage of
your car from long experience. Such as a long flat stretch of freeway,
no wind, constant speed. Log the injector pulse frequency or have a
passenger do that. Now you have a benchmark number.

With respect to flowmeters the number of cylinders doesn't have much to
do with their complexity. They measure the flow in the fuel line to the
injector unit and that will always be one line regardless of the
cylinder number.

Regards, Joerg

http://www.analogconsultants.com
On most modern cars, you use two flowmeters, since they circulate fuel
from the rear of the car to the presurised feed to the injectors, and
return the unused fuel to the tank.

Best Wishes

Really? Why is it necessary to return fuel to the tank?

To avoid vapour lock or purge vapours back to the tank.
Pat

 

[Ken Smith]

In article <no7dn0d87eksikcjb07ppokg4nqn44hqkb@4ax.com>,
John Larkin <jjlarkin@highSNIPlandTHIStechPLEASEnology.com> wrote:
[...]

and the "more-is-better" approach to using NFB,

More is better, unless it oscillates.

Actually you need to stop at least 3dB short of oscillation. If you don't
you get peaking.

--
--
kensmith@rahul.net forging knowledge