Latest threads in Electronics Computer-Aided Designshow only best voted threads
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How to change logic levels in LTSPice?
First time for me to do mixed mode sims on LTSpice. How do you change the voltage level of behavioral logic such as "AND" from the default 1V to some other voltage? Maybe even other parameter such as...
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15 years ago
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GerberGrab now FREE!! Reverse engineering, checking, and testing of manufacturing data
GERBERGRAB FREE FOR A LIMITED PERIOD!! In order to promote GerberGrab, you can now request a completely free full license. Just download, install, and email your ID number, and a permanent license...
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15 years ago
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Gerbv-2.0.1 for Windows released, but not working!
A while back I looked at Gerbv as a possible tool for verifying XYRS files. At the time I found that the windows version of this program did not work well enough to actually be useful. I posted about...
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15 years ago
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Using gschem to simulate active circuits with ngspice
I have gschem and ngspice running under Ubuntu Hardy and have successfully simulated passive (RLC) and a few with NPN and/or PNP transistors. I am having difficulty properly setting up simulations...
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15 years ago
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LTspice - fast NRZ pulses how?
Does anyone know a trick to make fast random NRZ pulses in LTspice? I don't want to use the read-from-file option, but would like to generate them procedurally. This is for speed and convenience. The...
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15 years ago
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Convert TL431 to TLVH431 (Pspice)
What modifications are needed to convert C. Bassos TL431 Pspice model to a TLVH431 model? I tried the obvious switching the 2.495V to 1.24V but I get a reference of 1.49V when I do this, it should be...
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15 years ago
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Whats difference between Plecs and Simpowersystem?
Whats difference between Plecs and SimPowersystem?
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15 years ago
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need PADS Work V6.0 dongle
In relocating to Tampa, I lost the security key for this legacy software, which many years ago stopped being supported by Mentor. I would gladly pay a reasonably amount to purchase a replacement....
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15 years ago
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How to set up a 1:1 transformer model?
I draw a transformer simultion with spice. when I chang ratio from 10:1 to 1:1. I get the model as follow. .SUBCKT 1TO1 1 2 3 4 VISRC 9 4 DC 0V FCTRL 6 2 VISRC 1E+0 EVCVS 8 9 5 2 1E+0 RPRI 1 7 1E-1...
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15 years ago
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spice tutorial
can anyone tell me where can i get an online tutorial teaching the spice modelling syntax or all about modeling using spice? I'm looking for a reference now. Thank you.
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15 years ago
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Customizable Toolbars
Suppose I wanted to add an extra toolbar to an existing program. Is there such a piece of software? ...Jim Thompson -- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | |...
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15 years ago
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data interchange format for board layout?
Is there a data interchange format in the circuit board layout industry comparable to DXF in the mechanical CAD world? I use Gnu PCB for my company's designs, but I'm getting into a collaborative...
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15 years ago
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Pcad version incompatibility?
Here is a question for all the pcad users out there. Now that that Altium has officially burried the product along with the knowledge base, it looks like were on our own. Recently we made changes to a...
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15 years ago
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Spice Model for PMT
Page 82 has some simple models. Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" Info for manufacturers: software/hardware/analog Info for designers:
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15 years ago
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diode protection in battery charger circuit?
I am building a charger for large (20-40 AH) lead acid batteries to power kid-size electric cars. I'm using an L200CV voltage regulator that's a step up from the 78XX, or LM317 types. It has 5 pins,...
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15 years ago
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