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Super duper hype fast FET driver?

J

Joerg

Your first post said capacitive load. Can you charge the load with
one transistor, let it float, then drive it down with a 2nd
transistor? Or does the output have to be hard the whole time?


+12v
|
|
||--' Q1
||>-.
|
|
+-------->
|
|
||--' Q2
||>-.
|
===


Q1 could be bootstrapped, or fed a separate non-overlapping drive,
or.... There are lots of possibilities that are 1nS fast, but we
don't know your parameters.

First-cut, LTSpice predicts 1.2nS fall time, as is.

That's what I am doing right now, using N-channels for both directions.
But the drive is iffy, there is only one digital signal available. The
capacitive load needs to be held hard only when the bottom FET conducts.
I'd have to make the upper drive signal and that's not easy because the
high time can be controlled in a rather wide range.

Which SPICE model 2N7002 did you use? The Vishay one conked out on me
every time I went to 4V drive or higher.
 
John Larkin wrote:
[email protected] wrote:

[email protected] wrote:

[...]

http://www.kexin.com.cn/pdf/KC846S.pdf
No useful specs.

That is normal with many Asian suppliers, got to get used to it and test
a lot for yourself. You can sometimes obtain additional data from them
but sometimes you'd have to be married to the CEO's cousin's daughter or
something like that.
"Test a lot?" What does that tell me? It went against my grain to use a
green LED (GaN) at 3.3V. "Because one works..." Well, at least if the next
lot doesn't work we'll know.

I didn't mean a lot as in production lot, but as in "a lot of testing" :)

Meaning some of the properties have to be measure. In some designs that
is the only way to succeed because there are no parts that can
"formally" do what you need them to do.


http://www.rohm.com/products/discrete/transistor/complex/#03
"Very small package with two transistors."

All those aren't fast though.
Me? I don't need fast. ;-)

Lucky you :)

Almost all my stuff is RF nowadays.
We buy modules for all that stuff. I wouldn't attempt it with the shoestring
capital budget we're on (we're down a scope and it doesn't appear that they're
going to even replace it).

A scope? That's scary. I hope that doesn't mean any bad news. You can
nowadays get a lotta scope for $1-2k.
Or a Rigol, for $350.

That may be bit skimpy. I often find myself debugging and finding things
on the digital side, where everyone was 110% sure it couldn't possibly
be a software issue. That's mostly SPI and other serial buses where 2ch
won't really work. Also, I found that 100MHz BW ain't enough. Glitches
in systems where a 8051 screams along at 80MHz or so are specterally
above that.

That's been my point when management (and the other engineer) suggest that
100MHz is enough. Gotta have at least 3X, 5x is better.

No need for 3x or 5x here. I have a 200MHz BW scope with 1GSPS realtime,
cost me about $1800 including tax. If things get any faster then I can
usually make them repetitive, at least on a temporary basis, and fire up
the old HP. That only has a 40MHz converter but a very good one and its
BW is 1GHz.

Still need amplifier bandwidth.
Like this :)


OMG! I had one of those. It was green and about as ugly as that orange. I'm
shocked that there are any left to laugh at.
I am not a gigital guy but AFAIK there aren't too many other uCs that
you can clock at 100MHz.

Externally, perhaps not. No reason.
Well yeah, but sometimes if you want more and more features it gets more
expensive and then da boss says no. I'd rather have a simpler scope than
no scope at all. Some of the newer baseline models have a feature or an
option for purchase that adds 4-16 digital inputs for logic analysis. I
never felt the urge since I have a logic analyzer. That has a trigger
output for the scope but I haven't needed that in years.

I've found that if I buy a crappy tool, I'll always have a crappy tool. I
don't do that anymore. I even bought a Festool today. ;-) But I'm certainly
not buying the boss a scope.
 
J

Joerg

John said:
John said:
[email protected] wrote: [...]

It's still better to not saturate them. Even a simple b-c schottky
makes a world of difference. I think I drove my test samples with
74ACxx logic, series resistor, || a few pF, Vdd=+5v.

74AC is too slow for my case. How did you keep it out of saturation? The
old Schottky Baker clamp usually doesn't work on those. A two-diode
Baker makes it all sluggish, too much total inductance in the drive.
A 74ACT octal buffer makes a damned fine high-speed output driver or
fet gate driver. Use 4 or better all 8 sections in parallel.
Can it rival the NL37 series? The advantage would be that those come in
octals. In the old days I have sometimes soldered several on top of each
other but only in experiments. I know that was naughty but it did drive
the big pulser (the super expensive lab grade driver box had croaked).
It was 74AC though.

They are almost as fast as NL37s, sub-ns, but have the advantage that
they are "ttl" compatible. If you power an NL from, say, 6.5 volts and
drive the input from 3.3 or even 5 volt logic, they can really get
hot.

Plus, you get 8 in a can.

Ok, that almost sounds like a deal. Being a bit slower can be made up by
more drive gusto. Eight means more amps than three. Just like the old
muscle car wisdom, cubic inches cannot be replaced by anthing, except by
more cubic-inches :)
 
J

Joerg


[...]
Well yeah, but sometimes if you want more and more features it gets more
expensive and then da boss says no. I'd rather have a simpler scope than
no scope at all. Some of the newer baseline models have a feature or an
option for purchase that adds 4-16 digital inputs for logic analysis. I
never felt the urge since I have a logic analyzer. That has a trigger
output for the scope but I haven't needed that in years.

I've found that if I buy a crappy tool, I'll always have a crappy tool. I
don't do that anymore. I even bought a Festool today. ;-) But I'm certainly
not buying the boss a scope.


Test drive one of those Taiwanese/Chinese scopes. You may be in for a
real surprise. The handbook of mine is rather skimpy, like with most
Asian electronics products. The first few weeks I discovered a new
feature almost daily. Especially in all those codes that it understands
for remote control.
 
S

Spehro Pefhany

Ok, that almost sounds like a deal. Being a bit slower can be made up by
more drive gusto. Eight means more amps than three. Just like the old
muscle car wisdom, cubic inches cannot be replaced by anthing, except by
more cubic-inches :)

Liters are even better!


Best regards,
Spehro Pefhany
 

[...]
For SPI and particularly I2C, I'd really like to see both the analog and data
domains, particularly for triggering.

Well yeah, but sometimes if you want more and more features it gets more
expensive and then da boss says no. I'd rather have a simpler scope than
no scope at all. Some of the newer baseline models have a feature or an
option for purchase that adds 4-16 digital inputs for logic analysis. I
never felt the urge since I have a logic analyzer. That has a trigger
output for the scope but I haven't needed that in years.

I've found that if I buy a crappy tool, I'll always have a crappy tool. I
don't do that anymore. I even bought a Festool today. ;-) But I'm certainly
not buying the boss a scope.


Test drive one of those Taiwanese/Chinese scopes. You may be in for a
real surprise. The handbook of mine is rather skimpy, like with most
Asian electronics products. The first few weeks I discovered a new
feature almost daily. Especially in all those codes that it understands
for remote control.

I did. The techs in production have them. Eeek!
 
J

Joerg

That's all right, just split it up and make two (if timing permits).

Only the edge-timing matters, right?

For one of them, sort of. I'll have to deal with droop but I'll get
around that somehow. This is where good old LC networks come in and
everyone in the design review goes "Eeuw!" :)
Fairchild, NDC7002N.

Thanks, will try that tomorrow. Also Jim's suggestion about Supertex.
For some reason only Arrow has Supertex but no stock. But they've got a
whopping 291,000 of the NDC7002. That's a lotta reels. So I'll try
Fairchild first because we have to be able to by it.
 
J

Joerg

I did that waayyy back. It's pretty impressive. One of the last
bipolar variants (ABT?) (AS?) had a faster falling edge, but the pull
up was absolutely pitiful.

I think it was an ABT that we blew when we bootstrapped the ground of
one device onto the tied outputs of another ... *POP* ... and a stench
wafted through the lab.

I wonder if Joerg's whole ckt could be a bridged array of ACT244's,
driving the load?

Unfortunately not :-(
 
J

Joerg

Jim said:
[...]

Thanks, will try that tomorrow. Also Jim's suggestion about Supertex.
For some reason only Arrow has Supertex but no stock. But they've got a
whopping 291,000 of the NDC7002. That's a lotta reels. So I'll try
Fairchild first because we have to be able to by it.

Supertex MODEL was best... probably models all brands equally well.

Ok, probably I'll try that tomorrow. Got the Fairchild model, which is
nice because it's for the tiny SSOT-6 package. They require a form sheet
request but the sender is a robot so I had it in 20sec.
 
J

Joerg

Bill said:
[...]
Yes. I have lived in countries with bans and without. With bans there
were less people who fried their brains via drugs and less drug-related
funerals. I prefer that.

It's a popular delusion that bans work. But restrictive France has a
bigger problem with drugs than the not-all-that permissive
Netherlands.

What I have observed is different.


Quote "The drug policy of the Netherlands is marked by its
distinguishing between so called "soft" and "hard drugs"."

And that's exactly the problem. Dealers want to make money so they mix a
teaser drug into soft drugs and ... kaboom, brain's almost fried. This
is how a guy whom I knew died. Several others are permanently mentally
disabled, and very seriously.
 
J

Joerg

Bill said:
Being a "sex worker" is a legitimate job in the Netherlands, and
people coming from those eastern European countries that are now part
of the recently extended European Union don't need any kind of
residency permit anyway.

You still need the Vergunning to Verblijf, just like I did. That's what
a Dutch couple that was here three weeks ago told me. They know that for
a fact because one of them is from the EU but not a Dutch citizen.

Make it legal and regulate the hell out of it. The Dutch don't yet
inspect brothels as aggressively as they now inspect fire-works depots
and chemical plants ... the risk of spreading sexually transmitted
diseases worries the neighbours less than the risk of loud explosions
or clouds of poisonous gas.

Prostitution, drugs, alcohol, tobacco and abortion are all services/
products that get provided whether or not they are legally permitted.
Banning them is just political posturing.

Abortion is a service? You've got to be kidding. To me that's murder for
hire.
 
J

Joerg

Nico said:
I think they already kicked that sort of friends out :)

Obviously there are plenty of them left:

http://www.cbs6albany.com/articles/amsterdam-1285760-police-raid.html

Well, if I see how American teenagers behave at places like Fort
Lauderdale... I doubt things are much different. I'm sure it is
possible to buy any kind of drugs no matter where you are.

That's what a classmate in Germany thought as well. Wrong. He did some
time for that.

Well, a lot is a matter of interpretation. But you should be aware
that NL priests are also very progressive and do not always follow the
rules set by Rome. There will never be a 'Dutch' pope :)

Renegade priests? :)

To me different religion = different set of rules.

For me there is only one :)

[...]

Well, some people kill themselves for less. Someone I used to know had
everything going well for him. He was about to get married, started to
get his life back together and he still found it necessary to step in
front of a train after taking sleeping pills didn't work. Everyone has
his/her own limit.

Out here we had a very similar case, he shot himself in the head. It was
the toughest memorial service I ever attended.

I agree its a slippery slope and I hope I never have to face such a
decision. I can understand that it is an option for some people. If
there really is no-one to care for the child then maybe its better off
not being born. But that really should be the last option and I doubt
it is really necessary. There are so many couples who cannot have
children of their own or people who are willing to take care of an
extra kid. We actually took care of someone else's child for a while
knowing it could be 'permanent' but in the end it didn't.

We did as well, for a little over a year.

There is an interesting movie on the subject:
http://www.imdb.com/title/tt0467406/

I will never forget when one of our vicars at church, shortly before
heading back for his last year at seminary, told the whole congregation:
"I was the baby that was supposed to be aborted". His mom got pregrant,
everyone pushed her hard to "take care of it". The mom's strong
Christian faith is what literally saved the life of this vicar. He is
now a pastor. Not many eyes stayed dry that morning. That really drove
it home.
 
J

Jon Kirwan

<snip>
And that's exactly the problem. Dealers want to make money so they mix a
teaser drug into soft drugs and ... kaboom, brain's almost fried. This
is how a guy whom I knew died. Several others are permanently mentally
disabled, and very seriously.

But Joerg, that isn't the only side. There are so many
others, as well. Just to add some balance, I'll talk about a
few.

The near trillion dollar a year business bribes everyone in
our gov't systems. Corrupt police, corrupt judges, corrupt
politicians, and a great deal of violence as well because
there is no court system that can be used to adjudicate
disputes. (So folks take 'justice' into their own hands, as
there is no other option except walking away.)

The destruction caused to society is profound and spreads
across every part of it. Our own US gov't was involved in
transporting cocaine into the US under the Reagan/Bush
administration as part of a larger plan to circumvent the
Boland amendments. It was horrible what that did in our
society. (If you need some names to look up, check up on
Donald Gregg, the senior advisor to G Bush sr and a daily
advisor to him; and Felix Rodriguez who met regularly with
Donald ... as just a very tiny sampling.)

We _must_ be able to trust our police and judicial system, if
it is to function well for all of us. You don't mention any
of this. And it is a cost that is both personal to those who
are dealt injustices by it as well as general.

And there is more. My daughter suffers from grand mal
seizures. Just about had one today and I spent a large part
of it holding her and helping her get through the risk. We
have tried nearly every viable drug for controlling these
seizures over the last 14 years. Many of them have serious
side effects, such as significant enhancement of tooth and
gum decay, listlessness and lack of life during the day,
liver and kidney damage that can be measured by the year,
profound and difficult personality changes, and other medical
risks. Some years ago, our neurologist decided to have us
try marijuana under the OMMP program and we measured the
impact (we keep daily records.) It was promising. We went
off of it, while trying still other drugs for a few years
since. We've only just started returning to marijuana
perhaps 6 months ago under the OMMP program in Oregon, when
her seizures increased to a rate of one every 6-8 days. Over
the last six months, we've experienced three seizure events.
It was a sudden and dramatic reduction and we are as certain
as one can be under the circumstances.

I cannot tell you how important this is in our lives. It
affects everything about our ability to cope and deal with
her seizures. And her personality has bloomed, as well. She
is drawing pictures every day, attempting to talk more with
us, and able to cope much better with the sounds that she is
so sensitive to during each day (bird calls outside can drive
her nuts, but do so much less now, for example.)

Time will tell us more. We are doing this entirely under the
control of both our neurologist and our general practitioner
-- the first we've been working with since 2003 (8 years now)
and the 2nd has been her doctor for almost 20 years. They
know our situation as well as any professionals may. And
they were taking care of her and trying to help us for many
years before we decided to try this, so it's not only our own
judgments here. It's the opinion of well trained
professionals who have had long experience with our
particular case and know where we have been over the years.

You may not appreciate just what this means. Our daughter
broke six teeth in one event over the bathtub. Just one
event. There were many others where she broke more in
differing situations. She broke both her radius and ulna in
another seizure. Clean through. She trapped an electric
heater between her legs in another and in the few seconds it
took for one of us to run down the hallway to get to her
room, she suffered 3rd degree burns to her inner thighs. She
will eventually die in one of these.. perhaps by falling
through some plate glass.. perhaps by falling at the top of
some stairway in some random moment we aren't immediately
present and can grab her. Something will get her. And the
more frequent the seizures, the more potential for that event
happening sooner than later.

It makes a HUGE difference. And so far, it is the very best
impact we've seen on her seizures. Others may have other
experiences. But in her case, there is no longer much
question that we are unaware of anything close to as good.
And we've been through every appropriate drug on the list
(large chart, large list, some not appropriate, but all
appropriate ones tried by now.)

There _are_ medical uses. But we are at risk every single
day because the Fed's consider it a crime. We are at risk
every day because someone may decide to invade our home
because of the black market. We are at risk for no good
reason. Our doctors are monitoring our use, we keep daily
records, and our federal system refuses to lower the
classification so that properly compounded and controlled
quantities can be prepared and used under medical
supervision.

There are many sides. You don't have to believe or agree
with any one part of it, but I think you need to understand
that there is much damage done by an industry that is illegal
and due to the huge moneys involved extremely corrupting at a
variety of levels. (There is a set of Congressional
testimony available in the Congressional Record, if you like,
that would scare most people because of how pervasive and
sweeping these effects were found to be during the Kerry
'drug hearings' in the late 1980's.) And it is very personal
to me, as well, as it places my family at personal and
continual risk and prevents my doctors from doing their job
as they should be able to do it.

It means something to me. One day, some time back, my wife
and I got to do one of the few 'dates' (maybe two a year, if
we are lucky?) where we got to go together to the grocery
store for some shopping and holding hands together. My
oldest son stayed back to watch Athena. When we arrived back
home, gone no longer than an hour, Becky wouldn't get out of
the car. She just sat there. I said, "What's up?" She
said, "You go in, see if she is still alive, and let me
know."

That's what our life is like, Joerg. And we now have
something that materially impacts that in our lives. You
know me. I'm telling you. You need to understand the
difference this makes in OUR lives, as well. Perhaps you
need to hear a different story from someone else you know so
that you can balance this a little better?

It's not just a little bit personal, Joerg. Just so you
know.

Jon
 
N

Nico Coesel

Joerg said:
Bill said:
[...]
at least it is legal and regulated, so there's hope those who work
there
do it of their own free will
just like drugs prostitution won't go aways just because you ban it,
it
just means criminals will make money providing it, with no regulation
what so ever
Oh yeah, if we give up fighting it we just make it legal. Sorry, but you
will not convince me of that. I have lived in the Netherlands for about
6 years and seen the sad aftermath of that. Including some funerals.
do you think a ban would fix that?
Yes. I have lived in countries with bans and without. With bans there
were less people who fried their brains via drugs and less drug-related
funerals. I prefer that.

It's a popular delusion that bans work. But restrictive France has a
bigger problem with drugs than the not-all-that permissive
Netherlands.

What I have observed is different.

Then you must have been in de drugs-scene :) No-one I know directly
or indirectly has died because of drugs.
 
N

Nico Coesel

Joerg said:
Abortion is a service? You've got to be kidding. To me that's murder for
hire.

Just out of personal interest: I guess you are against the death
penalty as well?
 
J

Joerg

John said:
[email protected] wrote:
John Larkin wrote:
[email protected] wrote:
[email protected] wrote:
[...]
http://www.kexin.com.cn/pdf/KC846S.pdf
No useful specs.
That is normal with many Asian suppliers, got to get used to it and test
a lot for yourself. You can sometimes obtain additional data from them
but sometimes you'd have to be married to the CEO's cousin's daughter or
something like that.
"Test a lot?" What does that tell me? It went against my grain to use a
green LED (GaN) at 3.3V. "Because one works..." Well, at least if the next
lot doesn't work we'll know.
I didn't mean a lot as in production lot, but as in "a lot of testing" :)
Meaning some of the properties have to be measure. In some designs that
is the only way to succeed because there are no parts that can
"formally" do what you need them to do.
http://www.rohm.com/products/discrete/transistor/complex/#03
"Very small package with two transistors."
All those aren't fast though.
Me? I don't need fast. ;-)
Lucky you :)
Almost all my stuff is RF nowadays.
We buy modules for all that stuff. I wouldn't attempt it with the shoestring
capital budget we're on (we're down a scope and it doesn't appear that they're
going to even replace it).
A scope? That's scary. I hope that doesn't mean any bad news. You can
nowadays get a lotta scope for $1-2k.
Or a Rigol, for $350.
That may be bit skimpy. I often find myself debugging and finding things
on the digital side, where everyone was 110% sure it couldn't possibly
be a software issue. That's mostly SPI and other serial buses where 2ch
won't really work. Also, I found that 100MHz BW ain't enough. Glitches
in systems where a 8051 screams along at 80MHz or so are specterally
above that.
That's been my point when management (and the other engineer) suggest that
100MHz is enough. Gotta have at least 3X, 5x is better.
No need for 3x or 5x here. I have a 200MHz BW scope with 1GSPS realtime,
cost me about $1800 including tax. If things get any faster then I can
usually make them repetitive, at least on a temporary basis, and fire up
the old HP. That only has a 40MHz converter but a very good one and its
BW is 1GHz.
It's just so weird to see the words "8051 screams along" run together like
that. ;-)
Like this :)
I am not a gigital guy but AFAIK there aren't too many other uCs that
you can clock at 100MHz.
We use an NXP ARM LPC1754, and it can clock at 100 MHz. Since it's a
register-rich 32-bit RISC thing, it really screams. We buy them
programmed with our code and laser marked from Arrow for $4.75 each.
you can even get the lpc1759 that will run at 120MHz, but it has 4x
the
memory so it will cost a bit more

it is impressive how much processing power you can get in a single
chip
that really only need a 3.3V supply and sometimes an xtal
We're also using LPC3250s, which clock at 270 MHz or some such, around
$8.
they need external memory that gets a bit more complicated ;)

-Lasse

This afternoon we first applied power to a laser controller that uses
a 3250. The test LEDs (upper left) came up funny because they are
connected to output-only ports (no tri-state) and various port bits
power up high or low! Turns out that's in the fine print somewhere.

ftp://jjlarkin.lmi.net/T940_first_board.jpg

The good news is that we loaded a never-before-run DRAM test, and it
(and the DRAM!!! and all the power supplies!!!) works!!!

This is only 6 layers; I don't know how The Brat managed to pull that
off.

That is very good for a first layout. Give her a raise :)
 
J

Joerg

John said:
1:1 transmission-line transformer. Easy. Zere are treeks to make ze
pulse tops really, really flat.

But ven you vant 2:1 dere iss more difficoolt.
 
J

Joerg

John said:
That occurred to me, apparently some minutes after it occurred to you!

If he has access to both sides of his load, he can bridge-drive it
from some arbitrary number of octal buffers. That should be very
clean. And cheap; Joerg like cheap!

Yeah, unfortunately the other side is unaccessible. Now a 1:2
transformer, that might be the ticket. Maybe I'll figure one out.
 
J

Joerg

Oh, just do that into a transformer then and you're done. 12v, hard,
fast, galvanically isolated, and cheap. A custom transformer would
allow voltage step-up, if you wanted.

One wee problem is that, while DC can be piped around it, transformers
with ratios other than 1:1, 1:4 and so on are very diffuclt to make
wideband.
 
J

Joerg

Jon said:
But Joerg, that isn't the only side. There are so many
others, as well. Just to add some balance, I'll talk about a
few.

The near trillion dollar a year business bribes everyone in
our gov't systems. Corrupt police, corrupt judges, corrupt
politicians, and a great deal of violence as well because
there is no court system that can be used to adjudicate
disputes. (So folks take 'justice' into their own hands, as
there is no other option except walking away.)

The destruction caused to society is profound and spreads
across every part of it. Our own US gov't was involved in
transporting cocaine into the US under the Reagan/Bush
administration as part of a larger plan to circumvent the
Boland amendments. It was horrible what that did in our
society. (If you need some names to look up, check up on
Donald Gregg, the senior advisor to G Bush sr and a daily
advisor to him; and Felix Rodriguez who met regularly with
Donald ... as just a very tiny sampling.)

We _must_ be able to trust our police and judicial system, if
it is to function well for all of us. You don't mention any
of this. And it is a cost that is both personal to those who
are dealt injustices by it as well as general.

Trust, yes, but one must remain watchful. I had an experience a few days
ago that was disappointing. Called 911 because someone left two large
dogs in a small car in the full sun. When the driver didn't return after
10mins and the dogs started to obviously suffer I called. The deputy
came and qizzed me. How I could come to the conclusion that they suffer
and so on. WHAT?

And there is more. My daughter suffers from grand mal
seizures. Just about had one today and I spent a large part
of it holding her and helping her get through the risk. We
have tried nearly every viable drug for controlling these
seizures over the last 14 years. Many of them have serious
side effects, such as significant enhancement of tooth and
gum decay, listlessness and lack of life during the day,
liver and kidney damage that can be measured by the year,
profound and difficult personality changes, and other medical
risks. Some years ago, our neurologist decided to have us
try marijuana under the OMMP program and we measured the
impact (we keep daily records.) It was promising. We went
off of it, while trying still other drugs for a few years
since. We've only just started returning to marijuana
perhaps 6 months ago under the OMMP program in Oregon, when
her seizures increased to a rate of one every 6-8 days. Over
the last six months, we've experienced three seizure events.
It was a sudden and dramatic reduction and we are as certain
as one can be under the circumstances.

I cannot tell you how important this is in our lives. It
affects everything about our ability to cope and deal with
her seizures. And her personality has bloomed, as well. She
is drawing pictures every day, attempting to talk more with
us, and able to cope much better with the sounds that she is
so sensitive to during each day (bird calls outside can drive
her nuts, but do so much less now, for example.)

Time will tell us more. We are doing this entirely under the
control of both our neurologist and our general practitioner
-- the first we've been working with since 2003 (8 years now)
and the 2nd has been her doctor for almost 20 years. They
know our situation as well as any professionals may. And
they were taking care of her and trying to help us for many
years before we decided to try this, so it's not only our own
judgments here. It's the opinion of well trained
professionals who have had long experience with our
particular case and know where we have been over the years.

You may not appreciate just what this means. Our daughter
broke six teeth in one event over the bathtub. Just one
event. There were many others where she broke more in
differing situations. She broke both her radius and ulna in
another seizure. Clean through. She trapped an electric
heater between her legs in another and in the few seconds it
took for one of us to run down the hallway to get to her
room, she suffered 3rd degree burns to her inner thighs. She
will eventually die in one of these.. perhaps by falling
through some plate glass.. perhaps by falling at the top of
some stairway in some random moment we aren't immediately
present and can grab her. Something will get her. And the
more frequent the seizures, the more potential for that event
happening sooner than later.

It makes a HUGE difference. And so far, it is the very best
impact we've seen on her seizures. Others may have other
experiences. But in her case, there is no longer much
question that we are unaware of anything close to as good.
And we've been through every appropriate drug on the list
(large chart, large list, some not appropriate, but all
appropriate ones tried by now.)

There _are_ medical uses. But we are at risk every single
day because the Fed's consider it a crime. We are at risk
every day because someone may decide to invade our home
because of the black market. We are at risk for no good
reason. Our doctors are monitoring our use, we keep daily
records, and our federal system refuses to lower the
classification so that properly compounded and controlled
quantities can be prepared and used under medical
supervision.

There are many sides. You don't have to believe or agree
with any one part of it, but I think you need to understand
that there is much damage done by an industry that is illegal
and due to the huge moneys involved extremely corrupting at a
variety of levels. (There is a set of Congressional
testimony available in the Congressional Record, if you like,
that would scare most people because of how pervasive and
sweeping these effects were found to be during the Kerry
'drug hearings' in the late 1980's.) And it is very personal
to me, as well, as it places my family at personal and
continual risk and prevents my doctors from doing their job
as they should be able to do it.

It means something to me. One day, some time back, my wife
and I got to do one of the few 'dates' (maybe two a year, if
we are lucky?) where we got to go together to the grocery
store for some shopping and holding hands together. My
oldest son stayed back to watch Athena. When we arrived back
home, gone no longer than an hour, Becky wouldn't get out of
the car. She just sat there. I said, "What's up?" She
said, "You go in, see if she is still alive, and let me
know."

That's what our life is like, Joerg. And we now have
something that materially impacts that in our lives. You
know me. I'm telling you. You need to understand the
difference this makes in OUR lives, as well. Perhaps you
need to hear a different story from someone else you know so
that you can balance this a little better?

It's not just a little bit personal, Joerg. Just so you
know.

Jon, I don't have anything against a (very carefully) prescribed medical
use. And I am sure it is a very valuable medicine in your daughter's
case because only parents can really tell what works and what doesn't.
There are lots of other drugs that are regularly used as hallucinogens
illegally but have very legitimate med uses, such as Oxycontin. If a
medical doctor and not some self-declared "practitioner" prescribes it,
by all means. What I do not like and am squarely against is this: There
was a pot fest somewhere near here. TV came, interviews. "Oh, the fenced
in area is so people can get high" ... "But you need a medical
permission to get in there, right?" ... "Oh, yeah, if you don't have one
yet you go over there, talk to the people and then get it. Doesn't take
long". That makes me sick.

But what really made me sad was what I saw while living in the
Netherlands. You, promising people. Then one day I met them again and
their brain was fried, permanently. Some could only babble, some could
not talk at all anymore.
 
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