Re: is there a model or subckt for the PWM chip SG3524?
rainbowsally wrote: Woops I forgot the link. It's in the forums file here. http://tech.groups.yahoo.com/group/LTspice/files/%20Temp/ <snip>
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rainbowsally <rainbowsally@...>
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#56820
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Re: is there a model or subckt for the PWM chip SG3524?
Cool. I'll go take a look. Got one uploaded and another one brewing myself. Gandolf wrote: :-) Yuh never know, Gandolf. Time may be non-linear. It su
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rainbowsally <rainbowsally@...>
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#56819
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Re: is there a model or subckt for the PWM chip SG3524?
Hi Gandolf. Gandolf wrote: Here's my first hack at a 'solution'. 555-pw-mod-rs-01-100Hz-5KHz.zip The ramp using an adjustable current source (actual xistor in the circuit) looks good but seems to be
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rainbowsally <rainbowsally@...>
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#56817
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dual npn transistors and some obsolete op-amps
Hello! Good day to all... I need to simulate a circuit involving a dual npn transistor, specifically 2N2920 transistor,.. Well I can't find a model here... Could you help me out... Maybe i didn't
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Shadow
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#56816
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Re: Kevin -- Tip: a cheap full load resistor
We did, Jack. Want to be included in the discussions? :-) If so, tell Helmut. The most recent offlist discussion was about current limiting in the power outputs (eliminates need for fuses in some
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rainbowsally <rainbowsally@...>
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#56815
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Re: Kevin -- Tip: a cheap full load resistor
Received and understood, Helumut. But it would be nice to be able to have a place to discuss this kind of stuff. We can get resistors, caps, and transistors, etc. from vendors, which is supported
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rainbowsally <rainbowsally@...>
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#56814
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Re: Kevin -- Tip: a cheap full load resistor
Can you guys take this amp private? ?You are cluttering up my mail box. ?:-( ? ?Jack ________________________________ To: LTspice@... Sent: Sunday, August 26, 2012 7:37 AM Subject:
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Jack Fanning
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#56813
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Re: application upgrade
In message <k1d6qc+gecf@...>, dated Sun, 26 Aug 2012, Helmut <helmutsennewald@...> writes: You can have ONE plot with a Y-axis on the left and another on the right in certain cases, such
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John Woodgate <jmw@...>
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#56818
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Re: application upgrade
Hello Riscy, LTspice is SPICE. You can use any SPICE model from any component vendor. Why do you think it's restricted? I am sure Mike will add new features in the future. LTspice a feature named
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Helmut Sennewald
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#56812
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Re: Writeing Files
FreePCB will import a LTspice netlist file (Menu, Tools > Export Netlist) directly. Just need to change the first line from '*PADS2000*' to '*PADS-PCB*'. Then for each component line (first list),
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aurvii
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#56811
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Re: Membership numbers at LTspice Users Group
Hello Berns, The number reported depends on whether you click on "Home" or you click on "Messages". The higher number (37954) is correct. Best regards, Helmut
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Helmut Sennewald
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#56810
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Re: application upgrade
LTspice is made by the company LT. So mainly it uses LT parts. And i's free. But as LTspice is compatible with Spice, mostly you may use models developed for Spice. (and there are many) to be contrary
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schockenbaum
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#56809
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Re: Membership numbers at LTspice Users Group
I think this group has consistently been growing, by rather large numbers (something in excess of 100 new members weekly, if I remember right, but that's off the top of my head so it might be wrong).
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Andy I
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#56808
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Re: application upgrade
Some of those features exist already in LTspice. (Perhaps what you were asking wasn't clear to me?) If you have recommended enhancements and improvements to add to LTspice, you can suggest them to the
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Andy I
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#56807
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Re: List Addresses Hacked
The number of spam mails did not increase. hws
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schockenbaum
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#56806
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Re: Kevin -- Tip: a cheap full load resistor
Hello, Please stop on these threads: ...a cheap full load resistor ...Power Supply Ripple ...audio amp... Every further message and many of the previous posting may be deleted soon due to be
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Helmut Sennewald
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#56805
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Re: Modeling IGBT capacitances from datasheet curves
The last sentence should read ("a" -> "as"):
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analog spiceman
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#56804
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Re: Modeling IGBT capacitances from datasheet curves
The best way to measure capacitance as a function of voltage is in an .ac analysis performed at a single frequency with voltage stepped as a parameter. The .ac and .step commands might be: .ac list
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analog spiceman
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#56803
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Re: What does "K L1 L2 0.99" actually mean?
How the topic started, how it went on and how it is now, all seem to point to a simple conclusion: http://www.imdb.com/title/tt0053291/ , which has nothing to do with mathematics, only with the way
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vladutzanu
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#56802
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Re: What does "K L1 L2 0.99" actually mean?
Replace the use of the word "impedence" with "inductance" in my previous post. As Analog posted spice uses the inductance values in transformer models, although the math would be the same using
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Ron Liff
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#56801
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