Does this look right?

[Rich Grise]

By the way, Linear Technology has a very nice free simulator called
"LT Spice" available for download.


I went to their web site but didn't find LT Spice. Just some other
programs that didn't look like sims.

You didn't look very hard.

Good Luck!
Rich

 

[John Popelish]

By the way, Linear Technology has a very nice free simulator called
"LT Spice" available for download.


I went to their web site but didn't find LT Spice. Just some other
programs that didn't look like sims.

Linear Technology refers to the spice simulator by two names. At the
download it is called SwitcherCad.
http://www.linear.com/designtools/softwareRegistration.jsp

 

[[email protected]]

Thanks, I saw several programs there but I assumed it would be called
LT Spice.

 

[Jasen Betts]

By the way, Linear Technology has a very nice free simulator called
"LT Spice" available for download.


I went to their web site but didn't find LT Spice. Just some other
programs that didn't look like sims.

It's also known as "SwitcherCAD III" or something similar.

I liked it better than EWB.

Bye.
Jasen

 

[Richard]

There's always one of you stupid mother fuckers on these NG huh?
Calling someone an idiot without any real knowlege of their own. My
guess is you don't know anymore about electronics than I do. In fact
you are probably not intelligent enough to learn so you just spew
insults. Typical huh?

sinebar,

Before you start hurling epithets, you should lurk awhile to learn a little
about what others know. Most, though not all, of the people that reply to
posts on this group are quite knowledgable about electronics. Your statement
in response to Pooh Bear "My guess is you don't know anymore about
electronics than I do." is illogical; he knew you couldn't place an ammeter
in parallel and get an accurate circuit current reading - you didn't. QED.

EWB is not my first choice, but it was, and still is, required by some
colleges. For instance, Old Dominion University's EE and EET programs use
texts that specifical present EWB examples. They also have the software
available at a reduced cost (student version). The fact is, many companies
are using EWB, whether we like it or not, so it may be worthwhile learning
something about it.

Whether you use EWB, SPICE, or any other similar software, you still have to
know something about how the test equipment is used. The virtual instruments
connect to the circuit in the same way as the real instruments.

You demonstrated a gap in your knowledge, and in your understanding of the
replies, by your statements and questions. You really shouldn't get so upset
when someone points that out. I can't speak for everyone, but at 57, I still
learn something new every day; it is what makes it worthwhile to get out of
bed.

Good luck if you decide to search for knowledge. Be civil and others will
usually be the same.

Richard

 

[Anthony Fremont]

By the way, Linear Technology has a very nice free simulator called
"LT Spice" available for download.


I went to their web site but didn't find LT Spice. Just some other
programs that didn't look like sims.

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

 

[[email protected]]

I liked it better than EWB.


Bye.
Jasen

EWB is expensive. Out of reach for the average hobbiest.

 

[Pooh Bear]

There's always one of you stupid mother fuckers on these NG huh?
Calling someone an idiot without any real knowlege of their own. My
guess is you don't know anymore about electronics than I do. In fact
you are probably not intelligent enough to learn so you just spew
insults. Typical huh?

If you're going to post in an electronics group it's not too much to ask
that you understand at least Ohm's Law and some basics about current flow
in circuits.

Graham

 

[John Popelish]

:




If you're going to post in an electronics group it's not too much to ask
that you understand at least Ohm's Law and some basics about current flow
in circuits.

In the basics group, yes, that is too much to ask.

 

[[email protected]]

I understand Ohms law perfectly and If you had any real knowlege, that
is being able to apply what you read on the internet, perhaps you
wouldn't feel the need to insult poeple. You see there is a REAL
DIFFERANCE between aquired knowlege and applied knowlege and it's funny
that you lurk in a BASICS NG and insult beginners. Why don't you go to
electronics design and take on Sam Goldwasser or someone like him with
your crap. I bet you won't will you?

 

[Never Mind]

I understand Ohms law perfectly

For somebody connecting an ammeter as you did, I find that hard to
believe.

Graham is still correct, in that you show a fundamental lack of the basics
of electricity.

and If you had any real knowlege, that is
being able to apply what you read on the internet, perhaps you wouldn't
feel the need to insult poeple. You see there is a REAL DIFFERANCE
between aquired knowlege and applied knowlege

ITYM there is a big difference between Knowledge and Understanding. As you
demonstrate quite well.

I suppose you don't consider "stupid mother fuckers" an insult then?

 

[John Fields]

I understand Ohms law perfectly

---
No, you don't. You've only just learned that the current in a
series circuit is everywhere the same in that circuit, but you
didn't know enough before that to _not_ connect the ammeter in
parallel with one of the resistors, thereby shorting that resistor
out and removing it from the circuit, causing the current in the
circuit to increase
---

and If you had any real knowlege, that
is being able to apply what you read on the internet, perhaps you
wouldn't feel the need to insult poeple.

---
I haven't read through this whole thread, so I may be mistaken, but
ISTM that what's got you riled up is that you were corrected in what
you think was an insulting way.

I don't think you were, and I think you were the first one to issue
epithets, which is unbecoming of a neophyte.

You need to realize that when you're wrong and your error is
corrected and presented to you by someone who knows more than you
do, that they're doing you a favor by dragging you out of the
darkness.

Your reaction to being corrected was, as I see it, the reaction of
someone who was shown the solution to a simple magic trick and then,
instead of thanking the magician, blamed the magician because the
trick was simple and you couldn't figure it out for yourself. A
cheap way of getting out of debt, no?
---

You see there is a REAL
DIFFERANCE between aquired knowlege and applied knowlege and it's funny
that you lurk in a BASICS NG and insult beginners. Why don't you go to
electronics design and take on Sam Goldwasser or someone like him with
your crap. I bet you won't will you?

---
"Differance"???

See what I mean?

All of a sudden you get real nasty and start spouting ridiculous
recriminations designed to try to make your teacher(s) seem
insignificant in order to keep from having to admit that you owe
them. A cheap trick used to try to convince yourself that you could
have done it without them, so you owe them nothing.

 

[[email protected]]

Graham is still correct, in that you show a fundamental lack of the
basics
of electricity.

That's why I am here asking questions. However, I am more than
capable of grasping Ohm's law.

 

[Pooh Bear]

---
No, you don't. You've only just learned that the current in a
series circuit is everywhere the same in that circuit, but you
didn't know enough before that to _not_ connect the ammeter in
parallel with one of the resistors, thereby shorting that resistor
out and removing it from the circuit, causing the current in the
circuit to increase

The OP's fundamental misunderstanding is shown in his very first post where
he says " the amp meter reports over 8A across the resistor " and then
repeats the *across* comment later.

Failure to understand that current flows *through* a resistor and that
*voltage* is measured across them is about as basic as it gets !

The OP would do well to study Ohm's Law followed by Kirchoff, Norton and
Thevenin.

Graham

 

[Pooh Bear]

Graham is still correct, in that you show a fundamental lack of the
basics
of electricity.

That's why I am here asking questions. However, I am more than
capable of grasping Ohm's law.

http://www.allaboutcircuits.com/vol_1/index.html


Graham

 

[Anthony Fremont]

I haven't read through this whole thread, so I may be mistaken, but

Before passing final judgment, perhaps you should. Sure the OP's
question sounded naive to someone with decades of experience. However,
you and even the great Pooh had to start with the basics too. I could
be wrong, but I'm betting that you guys weren't born knowing this stuff
inside out.

ISTM that what's got you riled up is that you were corrected in what
you think was an insulting way.

I'm thinking that the OP thought this statement was just a tad bit
insulting,
"You're an idiot. Go learn something about Ohms Law for starters."
Personally, I wouldn't classify that as constructive criticism, but
that's just me. This is S.E.B. after all.

I don't think you were, and I think you were the first one to issue
epithets, which is unbecoming of a neophyte.

Actually Pooh was the first to make with the childish insults and, IMO,
he should have fully expected the response that he got from the OP.

You need to realize that when you're wrong and your error is
corrected and presented to you by someone who knows more than you
do, that they're doing you a favor by dragging you out of the
darkness.

Hurling petty insults probably shouldn't be confused with enlightening
someone.

Your reaction to being corrected was, as I see it, the reaction of
someone who was shown the solution to a simple magic trick and then,
instead of thanking the magician, blamed the magician because the
trick was simple and you couldn't figure it out for yourself. A
cheap way of getting out of debt, no?

I don't think the OP was offended by being "corrected", I believe it was
the unnecessary insults that pissed him off.

Not really, are you starting with the spelling flames again? You often
end sentences with a preposition, but does anyone ever bother making a
grammatical issue of that?

 

[Pooh Bear]

I'm thinking that the OP thought this statement was just a tad bit
insulting,
"You're an idiot. Go learn something about Ohms Law for starters."
Personally, I wouldn't classify that as constructive criticism, but
that's just me. This is S.E.B. after all.

Let's see. I said that after the OP had already had the mistake pointed out
to him and totally ignored it and gone off at a tangent.

OP " the amp meter reports over 8A across the resistor. I thought the
amps would be very low across a resistor in this kind of circuit "

( re-reading it my mind boggles at what was meant by 'this kind of circuit'
- but nm )

Lacy " You can not measure current across the resistor. You need to put
the ammeter in series with the circuit "

OP " That's what I thought. So the program is lying to me. He he and
they want over $2000 to license it. "

Pooh " You don't get amps *across* a resistor.You're an idiot. Go learn
something about Ohms Law for starters. "


I stand by my comment even it was harsh. The OP clearly doesn't understand
Ohm's Law.

Graham

 

[John Fields]

Before passing final judgment, perhaps you should. Sure the OP's
question sounded naive to someone with decades of experience. However,
you and even the great Pooh had to start with the basics too. I could
be wrong, but I'm betting that you guys weren't born knowing this stuff
inside out.


I'm thinking that the OP thought this statement was just a tad bit
insulting,
"You're an idiot. Go learn something about Ohms Law for starters."
Personally, I wouldn't classify that as constructive criticism, but
that's just me. This is S.E.B. after all.

 

[John Fields]

Not really, are you starting with the spelling flames again?

 

[Pooh Bear]

I admit it was harsh. Subsequent posts suggest I had the OP 'spot on'
though. Call it second sense or whatever.

His errors were pointed out on multiple occasions and not once did he
apparently comprehend what was being explained. Indeed he dismissed some
very relevant comments. I have no time for those who ask for help and then
disregard the correct advice. They are truly worse than useless and there
are way too many of them around these days. A classic example of 'dumbing
down'.

Graham