What's a Good Sub for a 45V Zener?

  • Thread starter Watson A.Name - \"Watt Su
  • Start date
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Watson A.Name - \"Watt Su

Guest
I'm gonna make a 6V to 45V V boost circuit that can put out a few mA, so
I don't need much power or current from the four AA cells. It will be
used as a substitute for a 45V "B" battery, which are expensive and hard
to find nowadays. I figure a simple flyback circuit with inductor to
give the higher voltage. But I want to put a transistor between base of
the output transistor and ground to cut out the power when the rectified
and filtered DC gets up to 45VDC. I thought about using two resistors
in a V divider, with the .6V B-E junction voltage as the reference V.
But the .6V changes with temp, and this V converter will be used in a
portable environment where it will be exposed to variations in temp. So
that's not a good reference.

I thought that I could use five E-B junctions of cheap transistors in
series, each of which break down at about 9V, totalling about 45VDC.
That way, the current waste will be minimal. I could also use a 45V
zener, but they're not too common, and I think I'd rather use two 24V
zeners or three 15 or 16V zeners, or whatever.

What do you think about using the C to B or C to E junctions of a 30V or
40V transistor? Or tying the E to B and using the B to C junction? I
would have to select one for the right breakdown voltage, which might
take a bit of doing. But I have a whole lotta transistors to pick from.

Maybe I should just waste a lotta power and put a 45V zener right across
the output. But that would waste a lotta battery power. Maybe I should
use rechargeable AA cells.. Hmmm..


--
@@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@y@,@@C@a@l@,@@w@h@e@r@e@@
###Got a Question about ELECTRONICS? Check HERE First:###
http://users.pandora.be/educypedia/electronics/databank.htm
My email address is whitelisted. *All* email sent to it
goes directly to the trash unless you add NOSPAM in the
Subject: line with other stuff. alondra101 <at> hotmail.com
Don't be ripped off by the big book dealers. Go to the URL
that will give you a choice and save you money(up to half).
http://www.everybookstore.com You'll be glad you did!
Just when you thought you had all this figured out, the gov't
changed it: http://physics.nist.gov/cuu/Units/binary.html
@@t@h@e@@a@f@f@l@u@e@n@t@@m@e@e@t@@t@h@e@@E@f@f@l@u@e@n@t@@
@@@@@@
 
Hi, your first idea was best, if you put a 6.2v zeneer in the emmiter lead that
will cut the drift down to practicaly zero.
 
Why not use one of the simple, cheap ics already made for the purpose of
voltage conversion?

Or 3 of those 15v smoke alarm batteries.

David

"Watson A.Name - "Watt Sun, the Dark Remover"" <NOSPAM@dslextreme.com> wrote
in message news:105pt5jfaie5j29@corp.supernews.com...
I'm gonna make a 6V to 45V V boost circuit that can put out a few mA, so
I don't need much power or current from the four AA cells. It will be
used as a substitute for a 45V "B" battery, which are expensive and hard
to find nowadays. I figure a simple flyback circuit with inductor to
give the higher voltage. But I want to put a transistor between base of
the output transistor and ground to cut out the power when the rectified
and filtered DC gets up to 45VDC. I thought about using two resistors
in a V divider, with the .6V B-E junction voltage as the reference V.
But the .6V changes with temp, and this V converter will be used in a
portable environment where it will be exposed to variations in temp. So
that's not a good reference.

I thought that I could use five E-B junctions of cheap transistors in
series, each of which break down at about 9V, totalling about 45VDC.
That way, the current waste will be minimal. I could also use a 45V
zener, but they're not too common, and I think I'd rather use two 24V
zeners or three 15 or 16V zeners, or whatever.

What do you think about using the C to B or C to E junctions of a 30V or
40V transistor? Or tying the E to B and using the B to C junction? I
would have to select one for the right breakdown voltage, which might
take a bit of doing. But I have a whole lotta transistors to pick from.

Maybe I should just waste a lotta power and put a 45V zener right across
the output. But that would waste a lotta battery power. Maybe I should
use rechargeable AA cells.. Hmmm..


--
@@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@y@,@@C@a@l@,@@w@h@e@r@e@@
###Got a Question about ELECTRONICS? Check HERE First:###
http://users.pandora.be/educypedia/electronics/databank.htm
My email address is whitelisted. *All* email sent to it
goes directly to the trash unless you add NOSPAM in the
Subject: line with other stuff. alondra101 <at> hotmail.com
Don't be ripped off by the big book dealers. Go to the URL
that will give you a choice and save you money(up to half).
http://www.everybookstore.com You'll be glad you did!
Just when you thought you had all this figured out, the gov't
changed it: http://physics.nist.gov/cuu/Units/binary.html
@@t@h@e@@a@f@f@l@u@e@n@t@@m@e@e@t@@t@h@e@@E@f@f@l@u@e@n@t@@
@@@@@@
Click to expand...
 
On Sun, 21 Mar 2004 09:43:13 -0500, the renowned "David"
<dkuhajda@locl.net.spam> wrote:

Why not use one of the simple, cheap ics already made for the purpose of
voltage conversion?

Or 3 of those 15v smoke alarm batteries.
Click to expand...
Might be cheaper to snap together 5 9V batteries. ;-)
570mA @ 45V for a mere $7.

There's no reason you can't use the E-B junctions and they should be
very consistent within a lot of transistors, but don't try to use the
transistors as transistors again afterward.

Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com
 
"David" <dkuhajda@locl.net.spam> wrote in message
news:405dd355@news.greennet.net...
Why not use one of the simple, cheap ics already made for the purpose
of
voltage conversion?

Or 3 of those 15v smoke alarm batteries.

David
Click to expand...
Well, I kind of already did that. This meter requires a 45V B battery
but the company sells an adapter that holds 5 9V transistor radio
batteries in series. I bought it, for $35, plus shipping. For some
reason their "secure" ordering page didn't have America or U.S. listed
in the country choice box, and it wouldn't let me go past that point.
So I chose American Samoa, and the shipping charges were $50! So I
called their 800 number immediately after I ordered and talked to them
about that. In any case, I'm still out ten dollars each time I replace
5 of those 9V batteries, so I figured I'd do better with a V boost
circuit instead. Four AA cells are under a dollar when they're on sale,
or about $2 otherwise.

Oh gee, here's another idea. I can buy a brick of forty of those
'Ultralast" el cheapo AA cells for like $15 at Fry's and then connect 30
of them in series and tape them to the back of the meter... ;-)

Thanks..
"Watson A.Name - "Watt Sun, the Dark Remover"" <NOSPAM@dslextreme.com
wrote
in message news:105pt5jfaie5j29@corp.supernews.com...
I'm gonna make a 6V to 45V V boost circuit that can put out a few
mA, so
I don't need much power or current from the four AA cells. It will
be
used as a substitute for a 45V "B" battery, which are expensive and
hard
to find nowadays. I figure a simple flyback circuit with inductor
to
give the higher voltage. But I want to put a transistor between
base of
the output transistor and ground to cut out the power when the
rectified
and filtered DC gets up to 45VDC. I thought about using two
resistors
in a V divider, with the .6V B-E junction voltage as the reference
V.
But the .6V changes with temp, and this V converter will be used in
a
portable environment where it will be exposed to variations in temp.
So
that's not a good reference.

I thought that I could use five E-B junctions of cheap transistors
in
series, each of which break down at about 9V, totalling about 45VDC.
That way, the current waste will be minimal. I could also use a 45V
zener, but they're not too common, and I think I'd rather use two
24V
zeners or three 15 or 16V zeners, or whatever.

What do you think about using the C to B or C to E junctions of a
30V or
40V transistor? Or tying the E to B and using the B to C junction?
I
would have to select one for the right breakdown voltage, which
might
take a bit of doing. But I have a whole lotta transistors to pick
from.

Maybe I should just waste a lotta power and put a 45V zener right
across
the output. But that would waste a lotta battery power. Maybe I
should
use rechargeable AA cells.. Hmmm..


--
@@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@y@,@@C@a@l@,@@w@h@e@r@e@@
###Got a Question about ELECTRONICS? Check HERE First:###
http://users.pandora.be/educypedia/electronics/databank.htm
My email address is whitelisted. *All* email sent to it
goes directly to the trash unless you add NOSPAM in the
Subject: line with other stuff. alondra101 <at> hotmail.com
Don't be ripped off by the big book dealers. Go to the URL
that will give you a choice and save you money(up to half).
http://www.everybookstore.com You'll be glad you did!
Just when you thought you had all this figured out, the gov't
changed it: http://physics.nist.gov/cuu/Units/binary.html
@@t@h@e@@a@f@f@l@u@e@n@t@@m@e@e@t@@t@h@e@@E@f@f@l@u@e@n@t@@
@@@@@@
Click to expand...
 
"Spehro Pefhany" <speffSNIP@interlogDOTyou.knowwhat> wrote in message
news:7jdr5054bntpufeta9nvpnkn1eqebi967i@4ax.com...
On Sun, 21 Mar 2004 09:43:13 -0500, the renowned "David"
dkuhajda@locl.net.spam> wrote:

Why not use one of the simple, cheap ics already made for the purpose
of
voltage conversion?

Or 3 of those 15v smoke alarm batteries.

Might be cheaper to snap together 5 9V batteries. ;-)
570mA @ 45V for a mere $7.
Click to expand...
Yeah, I did; see my other followup.

There's no reason you can't use the E-B junctions and they should be
very consistent within a lot of transistors, but don't try to use the
transistors as transistors again afterward.
Click to expand...
I usually clip off the collector lead and wrap it around the base lead.
Takes care of that problem. I just wonder if I can get a Base to
Collector junction to reliably zener or breakdown. One time I rectified
and filtered 120VAC to get about 170VDC, and I put that thru a 150k or
so resistor and across some transistors to see what voltage they would
break down at. Well, as soon as I connected the meter leads, the things
oscillated so nasty that every channel on the TV was nothing but hum
bars and buzzing in the audio. Wow, what a jammer.
Needless to say, I don't need any negative resistance tendencies in a
zener, especially when it's going to be used for the reference voltage.
I've seen curve traces of a transistor tester, and they don't look too
good, zener-wise.
Thanks.

Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the
reward"
speff@interlog.com Info for manufacturers:
http://www.trexon.com
Embedded software/hardware/analog Info for designers:
http://www.speff.com
Click to expand...
 
"Watson A.Name - "Watt Sun, the Dark Remover"" <NOSPAM@dslextreme.com>
wrote in message news:105pt5jfaie5j29@corp.supernews.com...
| I'm gonna make a 6V to 45V V boost circuit that can put out a few mA,
so
| I don't need much power or current from the four AA cells. It will be
| used as a substitute for a 45V "B" battery, which are expensive and
hard
| to find nowadays. I figure a simple flyback circuit with inductor to
| give the higher voltage.

[snip]

Here's a voltage boosted boost converter. 1W discontinuous based around
a UCC380X. LTspice format.

Copy the text to notepad, save as a .asc file, load into LTspice.

Do you want to know more?

DNA

Version 4
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WINDOW 0 -138 140 Left 0
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SYMATTR Value MSWITCH
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TEXT -24 960 Left 0 !.model MSWITCH SW(Ron=10m Roff=1E6 Vt=2.5 vh=-1)
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TEXT -24 936 Left 0 !.tran 0 1m 500u uic
TEXT 208 24 Left 0 !K1 L1 L2 1
 
"Emoneg" <Emoneg@nothere.com> wrote in message
news:Vjn7c.14$Kn2.5@newsfe1-win...
"Watson A.Name - "Watt Sun, the Dark Remover"" <NOSPAM@dslextreme.com
wrote in message news:105pt5jfaie5j29@corp.supernews.com...
| I'm gonna make a 6V to 45V V boost circuit that can put out a few
mA,
so
| I don't need much power or current from the four AA cells. It will
be
| used as a substitute for a 45V "B" battery, which are expensive and
hard
| to find nowadays. I figure a simple flyback circuit with inductor
to
| give the higher voltage.

[snip]

Here's a voltage boosted boost converter. 1W discontinuous based
around
a UCC380X. LTspice format.

Copy the text to notepad, save as a .asc file, load into LTspice.

Do you want to know more?

DNA
Click to expand...
Thanks. But how am I going to fit that inside my meter? Let alone the
PC it runs on?

Seriously, I believe you that it works, a schematic of it will do fine,
since I can build one from it. But I don't have any spice, I'm a
soldering fool with a hot soldering iron, ready to do some damage to a
PC board. That's all, no simulations needed. Really.



Version 4
SHEET 1 2132 1112
[snip]
Click to expand...
 
On Sun, 21 Mar 2004 13:20:54 -0800, "Watson A.Name - \"Watt Sun, the
Dark Remover\"" <NOSPAM@dslextreme.com> wrote:

[snip]
Seriously, I believe you that it works, a schematic of it will do fine,
since I can build one from it. But I don't have any spice, I'm a
soldering fool with a hot soldering iron, ready to do some damage to a
PC board. That's all, no simulations needed. Really.



Version 4
SHEET 1 2132 1112
[snip]
Click to expand...
Then why are you asking about 45V zener replacements?

All that is required is any available zener plus a transistor and two
resistors... voila, multiplied zener.

Connection is left as an exercise for the student... since there is a
finite number of ways to connect 4 components with only two terminals
net ;-)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

Throughout the history of this great country there have actually
been people of only two political persuasions: fighters and yellow-
bellies. WE MUST NOT LET THE LATTER PREVAIL IN THE NEXT ELECTION!
 
"Watson A.Name - "Watt Sun, the Dark Remover"" <NOSPAM@dslextreme.com>
wrote in message news:105s1m84b6m0jd5@corp.supernews.com...
| >Here's a voltage boosted boost converter. 1W discontinuous based
| >around a UCC380X. LTspice format.
| >
| >Copy the text to notepad, save as a .asc file, load into LTspice.
| >
| >Do you want to know more?
| >
| >DNA
|
| Thanks. But how am I going to fit that inside my meter? Let alone
the
| PC it runs on?
|
| Seriously, I believe you that it works, a schematic of it will do
fine,
| since I can build one from it. But I don't have any spice, I'm a
| soldering fool with a hot soldering iron, ready to do some damage to a
| PC board. That's all, no simulations needed. Really.
|
|
|
| > Version 4
| > SHEET 1 2132 1112
| [snip]
| >
|
|

LTspice, available for free from

http://www.linear.com/software/

A full featured free unrestricted spice simulator.

Also useful for communicating circuit diagrams and ideas.

UCC380X datasheet available 'free' from

http://www.ti.com

Understand what you build


DNA
 
On Sun, 21 Mar 2004 09:52:11 -0800, "Watson A.Name - \"Watt Sun, the
Dark Remover\"" <NOSPAM@dslextreme.com> wrote:


Well, I kind of already did that. This meter requires a 45V B battery
but the company sells an adapter that holds 5 9V transistor radio
batteries in series. I bought it, for $35, plus shipping. For some
reason their "secure" ordering page didn't have America or U.S. listed
in the country choice box, and it wouldn't let me go past that point.
So I chose American Samoa, and the shipping charges were $50! So I
called their 800 number immediately after I ordered and talked to them
about that. In any case, I'm still out ten dollars each time I replace
5 of those 9V batteries, so I figured I'd do better with a V boost
circuit instead. Four AA cells are under a dollar when they're on sale,
or about $2 otherwise.

Oh gee, here's another idea. I can buy a brick of forty of those
'Ultralast" el cheapo AA cells for like $15 at Fry's and then connect 30
of them in series and tape them to the back of the meter... ;-)

Thanks..
I publishes a small voltage converter diagram in ASCII some weeks
Click to expand...
ago in sci.electronics.design.
It has one pot core, one transistor, and you can set the voltage by
the number of turns.
It is very efficient and does not get hot.
It should work on 4 AAA or AA for a long time.
I could not find how much current you draw at the 45 V.
Consider using rechargeble Ni-MH types.
JP
 
Emoneg wrote...
LTspice, available for free from http://www.linear.com/software/
A full featured free unrestricted spice simulator.
Also useful for communicating circuit diagrams and ideas.

UCC380X datasheet available 'free' from http://www.ti.com

Understand what you build.
Click to expand...
An interesting justaposition, DNA.

Does LTC's LTspice program include any of the TI UCC380x
family models in their library?

Thanks,
- Win

whill_at_picovolt-dot-com
 
"Emoneg" <Emoneg@nothere.com> wrote in message
news:qPo7c.27$%l2.10@newsfe1-win...
"Watson A.Name - "Watt Sun, the Dark Remover"" <NOSPAM@dslextreme.com
wrote in message news:105s1m84b6m0jd5@corp.supernews.com...
| >Here's a voltage boosted boost converter. 1W discontinuous based
| >around a UCC380X. LTspice format.
|
| >Copy the text to notepad, save as a .asc file, load into LTspice.
|
| >Do you want to know more?
|
| >DNA
|
| Thanks. But how am I going to fit that inside my meter? Let alone
the
| PC it runs on?
|
| Seriously, I believe you that it works, a schematic of it will do
fine,
| since I can build one from it. But I don't have any spice, I'm a
| soldering fool with a hot soldering iron, ready to do some damage to
a
| PC board. That's all, no simulations needed. Really.
|
|
|
| > Version 4
| > SHEET 1 2132 1112
| [snip]
|
|
|

LTspice, available for free from

http://www.linear.com/software/

A full featured free unrestricted spice simulator.

Also useful for communicating circuit diagrams and ideas.

UCC380X datasheet available 'free' from

http://www.ti.com

Understand what you build
Click to expand...
Thank you, but understanding what one builds does not require a spice
program, especially when you have the Real Thing.

It also locks you into their products. TANSTAAFL.

DNA
Click to expand...
 
Watson A.Name - "Watt Sun, the Dark Remover" wrote:

LTspice, available for free from

http://www.linear.com/software/

A full featured free unrestricted spice simulator.

Also useful for communicating circuit diagrams and ideas.

UCC380X datasheet available 'free' from

http://www.ti.com

Understand what you build


Thank you, but understanding what one builds does not require a spice
program, especially when you have the Real Thing.

It also locks you into their products. TANSTAAFL.
Click to expand...
Hardly, The models provided by other manufacturers work
just fine in LTSpice.

-Chuck Harris
 
What about 3 x 15v 1 watt zeners in series?


"Watson A.Name - "Watt Sun, the Dark Remover"" <NOSPAM@dslextreme.com> wrote
in message news:105pt5jfaie5j29@corp.supernews.com...
I'm gonna make a 6V to 45V V boost circuit that can put out a few mA, so
I don't need much power or current from the four AA cells. It will be
used as a substitute for a 45V "B" battery, which are expensive and hard
to find nowadays. I figure a simple flyback circuit with inductor to
give the higher voltage. But I want to put a transistor between base of
the output transistor and ground to cut out the power when the rectified
and filtered DC gets up to 45VDC. I thought about using two resistors
in a V divider, with the .6V B-E junction voltage as the reference V.
But the .6V changes with temp, and this V converter will be used in a
portable environment where it will be exposed to variations in temp. So
that's not a good reference.

I thought that I could use five E-B junctions of cheap transistors in
series, each of which break down at about 9V, totalling about 45VDC.
That way, the current waste will be minimal. I could also use a 45V
zener, but they're not too common, and I think I'd rather use two 24V
zeners or three 15 or 16V zeners, or whatever.

What do you think about using the C to B or C to E junctions of a 30V or
40V transistor? Or tying the E to B and using the B to C junction? I
would have to select one for the right breakdown voltage, which might
take a bit of doing. But I have a whole lotta transistors to pick from.

Maybe I should just waste a lotta power and put a 45V zener right across
the output. But that would waste a lotta battery power. Maybe I should
use rechargeable AA cells.. Hmmm..


--
@@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@y@,@@C@a@l@,@@w@h@e@r@e@@
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goes directly to the trash unless you add NOSPAM in the
Subject: line with other stuff. alondra101 <at> hotmail.com
Don't be ripped off by the big book dealers. Go to the URL
that will give you a choice and save you money(up to half).
http://www.everybookstore.com You'll be glad you did!
Just when you thought you had all this figured out, the gov't
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@@@@@@
Click to expand...
 
"Watson A.Name - \"Watt Sun, the Dark Remover\"" wrote:

TL431

Graham
 
"Winfield Hill" <Winfield_member@newsguy.com> wrote in message
news:c3l76801tjo@drn.newsguy.com...
| Emoneg wrote...
| >
| > LTspice, available for free from http://www.linear.com/software/
| > A full featured free unrestricted spice simulator.
| > Also useful for communicating circuit diagrams and ideas.
| >
| > UCC380X datasheet available 'free' from http://www.ti.com
| >
| > Understand what you build.
|
| An interesting justaposition, DNA.
|
| Does LTC's LTspice program include any of the TI UCC380x
| family models in their library?
|
| Thanks,
| - Win
|
| whill_at_picovolt-dot-com
|

No....

If you look at the circuit provided you will find that it is a simple
implementation of what lives within a UCC380X. (UC384X)

I've posted the .asc file to the binaries group.

Since I'm not too clever with Spice or things in general my level of
usage is limited or deliberately restricted to that sort of thing. I
think it is probably better than using a macromodel.

LTspice lets you do that.

DNA
 
"Watson A.Name - "Watt Sun, the Dark Remover"" <NOSPAM@dslextreme.com>
wrote in message news:105sh7rnir6abf9@corp.supernews.com...
|
| "Emoneg" <Emoneg@nothere.com> wrote in message
| news:qPo7c.27$%l2.10@newsfe1-win...
| >
| > LTspice, available for free from
| >
| > http://www.linear.com/software/
| >
| > A full featured free unrestricted spice simulator.
| >
| > Also useful for communicating circuit diagrams and ideas.
| >
| > UCC380X datasheet available 'free' from
| >
| > http://www.ti.com
| >
| > Understand what you build
|
| Thank you, but understanding what one builds does not require a spice
| program, especially when you have the Real Thing.
|
| It also locks you into their products. TANSTAAFL.
|
| > DNA
| >
| >
|
|

If you looked at the circuit provided, using LTspice, you would see that
it does not contain any proprietry LT parts. It is a simple
implementation of the guts of a UCC380X (UC384X).

You are not, in any way locked into using their products.

If other manufacturers produce Spice models you can add them in. Like I
say it's full featured, free and unrestricted. It also gives me an
opportunity to express my ideas to you in a format available to both of
us. I could use it to give you a circuit diagram.



The first time I used Spice in anger, not this version a restricted free
copy of something else, was on a unit that was and had been in
production for some years that was failing final test.

The person who designed it 'had the real thing'. It turned out it was
borderline unstable. I could have spent ages drawing bode plots and such
stuff.

These days I might be able to. In fact most times I can crank some sums
on a calculator with a bit of paper, only because spice has given me the
experience, but I wouldn't.

I modelled it in spice and demonstrated that it was borderline unstable
with a 'bandwidth of 4KHz.

I used the knowledge I had at the time made it stable in spice and
increased the bandwidth to 24KHz....... yes the original engineer was
that far off what was possible an he was working with the real thing.

I implemented the mods and the thing went ape shit at 10KHz. I'd misread
a resistor value. I changed it and it worked. I put the wrong resistor
value in spice and spice went unstable at....... 10KHz.

It takes a minimum of three separate snubbers to deal with a forward
converter. I could have read someone elses attempt to explain what's
going on in words and got nowhere. I could have cried tears over the
real thing. I stuffed it up spice and isolated what was playing with
what went back to the real thing and sorted it.

In the process I discovered where the voltage spike on the rectifier
comes from and tamed that as well. I could used spice to explain it to
you and you'd understand.

I think I might do that today.

Spice is a mother beautiful tool. Next time I meet some 'hard man'
luddite who denies this for whatever reason I'll consign him to the
ignorant bucket.

Chances are that, once again, I'll be fixing his broken thing.

DNA
 
Pooh Bear wrote:
"Watson A.Name - \"Watt Sun, the Dark Remover\"" wrote:

TL431

Graham
Click to expand...
Again a bad advice, this part works only up to 36V and cannot dissipate the
required power either.
--
ciao Ban
Bordighera, Italy
 
"Winfield Hill" <Winfield_member@newsguy.com> wrote in message
news:c3l76801tjo@drn.newsguy.com...
| Emoneg wrote...
| >
| > LTspice, available for free from http://www.linear.com/software/
| > A full featured free unrestricted spice simulator.
| > Also useful for communicating circuit diagrams and ideas.
| >
| > UCC380X datasheet available 'free' from http://www.ti.com
| >
| > Understand what you build.
|
| An interesting justaposition, DNA.
|
| Does LTC's LTspice program include any of the TI UCC380x
| family models in their library?
|
| Thanks,
| - Win
|
| whill_at_picovolt-dot-com
|

Oh, shouldn't that be juxtaposition. }:)~~~

DNA
 
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