Comments for The CircuitCalculator.com Blog http://circuitcalculator.com/wordpress a blog with live web calculators... Thu, 11 Mar 2010 06:24:58 +0000 http://wordpress.org/?v=2.0.7 Comment on Best Free Circuit Simulator by DR http://circuitcalculator.com/wordpress/2006/01/21/best-free-circuit-simulator/#comment-33288 Wed, 17 Feb 2010 04:46:46 +0000 http://circuitcalculator.com/wordpress/2006/01/21/best-free-circuit-simulator/#comment-33288 Zarowski, 4 years later, here I am having the same problem as you. from what I've gathered the problem was the spaces in the name. It appears that when LTSpice generates the Netlist it treats spaces as seperators for different nodes and parts. So by putting a space in the name (as you and I both did) LTSpice treats it as separate entities. In your case series rlc. Or at least that what I got from it. Jsut thought you would appreciate the knowledge. Zarowski,

4 years later, here I am having the same problem as you.
from what I’ve gathered the problem was the spaces in the name. It appears that when LTSpice generates the Netlist it treats spaces as seperators for different nodes and parts. So by putting a space in the name (as you and I both did) LTSpice treats it as separate entities. In your case series rlc. Or at least that what I got from it. Jsut thought you would appreciate the knowledge.

]]> Comment on Wire Parameter Calculator by Don http://circuitcalculator.com/wordpress/2007/09/20/wire-parameter-calculator/#comment-32000 Thu, 31 Dec 2009 05:28:42 +0000 http://circuitcalculator.com/wordpress/2007/09/20/wire-parameter-calculator/#comment-32000 Really good gear in here mate ! ..... MUCH appreciated ...its in my "favourites" like an ol Murrumbidgee tick ! Really good gear in here mate ! ….. MUCH appreciated …its in my “favourites” like an ol Murrumbidgee tick !

]]> Comment on Save Your Back by Using a High Desk by Wyn Robertson http://circuitcalculator.com/wordpress/2008/03/14/save-your-back-by-using-a-high-desk/#comment-27412 Fri, 02 Oct 2009 18:31:41 +0000 http://circuitcalculator.com/wordpress/2008/03/14/save-your-back-by-using-a-high-desk/#comment-27412 Good info. I am lucky, in that my company purchased an adjustable desk for me. So I used your advice to adjust it to the correct height. Thanks, Wyn ---Reply--- Let us know how it works out. Brad Good info. I am lucky, in that my company purchased an adjustable desk for me. So I used your advice to adjust it to the correct height.

Thanks,
Wyn
—Reply—
Let us know how it works out.
Brad

]]> Comment on Save Your Back by Using a High Desk by Don http://circuitcalculator.com/wordpress/2008/03/14/save-your-back-by-using-a-high-desk/#comment-26753 Sat, 19 Sep 2009 02:57:50 +0000 http://circuitcalculator.com/wordpress/2008/03/14/save-your-back-by-using-a-high-desk/#comment-26753 NIce web tool for PCB thickness/heat dissip etc ..thks Mr/Mrs creator... Also look at special chairs which dont lift the knees ie the "computer chairs" .... That puts the back sacroilliac and L1,2,3 into vertical line to withstand compressive forces. Distributes the force more uniformley around the vertebral disk area available. Its a nuisance to get high chairs etc ...better to use the "computer chairs" methinks ...??? NIce web tool for PCB thickness/heat dissip etc ..thks Mr/Mrs creator…

Also look at special chairs which dont lift the knees ie the “computer chairs” ….
That puts the back sacroilliac and L1,2,3 into vertical line to withstand compressive forces. Distributes the force more uniformley around the vertebral disk area available.
Its a nuisance to get high chairs etc …better to use the “computer chairs” methinks …???

]]> Comment on Best Free Circuit Simulator by Alexei Smirnov http://circuitcalculator.com/wordpress/2006/01/21/best-free-circuit-simulator/#comment-23589 Tue, 07 Jul 2009 03:59:35 +0000 http://circuitcalculator.com/wordpress/2006/01/21/best-free-circuit-simulator/#comment-23589 I'd rather say Simetrix is similar to NL, since NL is definitely older :) Unfortunately, not the first on the market for many reasons.... my fault. As for models and comparison with Spice(-like) programs, I probably was wrong stating that NL is "an alternative". A better definition would be: "different". The idea is: make everything simple as much as possible, i.e."ideal", so that nothing is hidden inside the models; sketch your design in seconds; get a result in seconds. Some critical parasitics can be added as well, with your full control and knowledge. Literally "what you see is what you get" - no surprises. This is a first, "concept approval", or "syntheses" step of any project design. A second step, comprehensive "analysis", can be done with Spice. However, many users continue analysis with NL, because they do not trust Spice models (it's not my opinion, I'm not working with Spice at all). You may ask: why don't do the "fast" initial analysis with Spice? Because Spice by definition can not deal with true "ideal" components, and some schematics just won't work at all. I definitely need to "compress" all I've just said into one clear sentence... it's too hard. Anyway, I hope you know what to expect from NL . By the way, 20 components in free version must be quite enough for solving many problems, fast and easy. And last (but not least), I don't think a large user group would be a better help than an author. I'm available. Alexei I’d rather say Simetrix is similar to NL, since NL is definitely older :) Unfortunately, not the first on the market for many reasons…. my fault. As for models and comparison with Spice(-like) programs, I probably was wrong stating that NL is “an alternative”. A better definition would be: “different”. The idea is: make everything simple as much as possible, i.e.”ideal”, so that nothing is hidden inside the models; sketch your design in seconds; get a result in seconds. Some critical parasitics can be added as well, with your full control and knowledge. Literally “what you see is what you get” - no surprises.
This is a first, “concept approval”, or “syntheses” step of any project design. A second step, comprehensive “analysis”, can be done with Spice. However, many users continue analysis with NL, because they do not trust Spice models (it’s not my opinion, I’m not working with Spice at all). You may ask: why don’t do the “fast” initial analysis with Spice? Because Spice by definition can not deal with true “ideal” components, and some schematics just won’t work at all.
I definitely need to “compress” all I’ve just said into one clear sentence… it’s too hard. Anyway, I hope you know what to expect from NL . By the way, 20 components in free version must be quite enough for solving many problems, fast and easy.
And last (but not least), I don’t think a large user group would be a better help than an author. I’m available.
Alexei

]]> Comment on Best Free Circuit Simulator by Dave http://circuitcalculator.com/wordpress/2006/01/21/best-free-circuit-simulator/#comment-22939 Wed, 17 Jun 2009 22:14:49 +0000 http://circuitcalculator.com/wordpress/2006/01/21/best-free-circuit-simulator/#comment-22939 It's a new software, yet there is someone who has claimed using this for over 10 years in the testimonial page. The credibility is in question. I never try it yet, but it looks like it is similar to Simetrix. I'd rather stay with free LTSPICE for now which has a large user group for help and more model available in Spice. It’s a new software, yet there is someone who has claimed using this for over 10 years in the testimonial page. The credibility is in question. I never try it yet, but it looks like it is similar to Simetrix. I’d rather stay with free LTSPICE for now which has a large user group for help and more model available in Spice.

]]> Comment on PCB Trace Width Calculator by Chris Taylor http://circuitcalculator.com/wordpress/2006/01/31/pcb-trace-width-calculator/#comment-22397 Wed, 10 Jun 2009 15:14:50 +0000 http://circuitcalculator.com/wordpress/2006/01/31/pcb-trace-width-calculator/#comment-22397 If the required trace width is wider than the area available, it is possible to divide the current in half and calculate the trace width for that current and run those traces on two separate layers to achieve the required current carrying capacity? ---Reply--- You can do that, but you will get twice the temperature rise because the heat source per unit area is double. Brad If the required trace width is wider than the area available, it is possible to divide the current in half and calculate the trace width for that current and run those traces on two separate layers to achieve the required current carrying capacity?
—Reply—
You can do that, but you will get twice the temperature rise because the heat source per unit area is double.
Brad

]]> Comment on Schematic and PCB Design Process by John Somewhere in Canada http://circuitcalculator.com/wordpress/2008/03/07/schematic-and-pcb-design-process/#comment-21747 Wed, 03 Jun 2009 18:19:05 +0000 http://circuitcalculator.com/wordpress/2008/03/07/schematic-and-pcb-design-process/#comment-21747 Many years I read a tip that suggested that the schematic be drawn in such a way that is resembles the final physical result, in this case the pcb layout, While is not necessary, and in some cases, not possible, it suggests that the designer should have some idea how things will go together when the schematic is drawn. Regards. Many years I read a tip that suggested that the schematic be drawn in such a way that is resembles the final physical result, in this case the pcb layout, While is not necessary, and in some cases, not possible, it suggests that the designer should have some idea how things will go together when the schematic is drawn. Regards.

]]> Comment on Wire Parameter Calculator by Tom http://circuitcalculator.com/wordpress/2007/09/20/wire-parameter-calculator/#comment-21585 Sun, 31 May 2009 11:43:00 +0000 http://circuitcalculator.com/wordpress/2007/09/20/wire-parameter-calculator/#comment-21585 For aluminium wires use calculations like Al.diameter= Cu.diameter*1.65.For same amp./voltage of copper wire diameter You need 1.65 bigger aluminium wire diameter.Example for 1mm copper diameter,if you replaced with aluminium you need 1.65mm diameter wire. For aluminium wires use calculations like Al.diameter= Cu.diameter*1.65.For same amp./voltage of copper wire diameter You need 1.65 bigger aluminium wire diameter.Example for 1mm copper diameter,if you replaced with aluminium you need 1.65mm diameter wire.

]]> Comment on Skin Effect Calculator by Steve http://circuitcalculator.com/wordpress/2007/06/18/skin-effect-calculator/#comment-20814 Mon, 18 May 2009 13:56:57 +0000 http://circuitcalculator.com/wordpress/2007/06/18/skin-effect-calculator/#comment-20814 It would be nice to be able to calculate skin depth for other materials such as Nickle, Silver and Gold. It would be nice to be able to calculate skin depth for other materials such as Nickle, Silver and Gold.

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