Questions tagged [ltspice]
Anything related to LTspice. LTspice is a SPICE simulation, schematic capture, and waveform viewer program from Linear Technology. LTspice is freeware with a very liberal license, it is lightweight, and isn't crippled in any way.
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LTSpice simulation of rectifier slows down after short time
I have the following simple circuit set up in LTspice:
Blue is on the output of the transformer and green from the rectifier.
If I don't include a capacitor this works fine and the simulation goes ...
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How do you simulate voltage noise with LTSpice?
Is there a way to setup a voltage supply with voltage jitter/noise? I want to experiment with filtering out noise on various voltages etc. but not sure how to configure LTSpice to create a noisy ...
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Can I simulate any component with LTSpice?
I'm trying to build a very basic 3.3V supply, but would like to simulate the circuit in LTSPice if possible, before I physically build the circuit. I'm using a couple of components not found in ...
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How can one label a node with more than one name in SPICE/ LTspice
Update: node name "alias" (aka synonym) resolution seems to work fine in simple circuits... even though one of the two names "goes away" it's doing what I'd expect by namely referring everything to ...
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Simulating real world transformer with LTSpice
I'm studying LTSpice, and I'm playing in transformer simulation. I want to modelize a real world power line transformer in a reasonable way: I mean I don't need an exact simulation of some specific ...
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Unijunction transistor in LTspice?
I would like to simulate a simple oscillating circuit involving an unijunction transistor. I do not find such component in LTspice so I figure I need to import one. Could please show me step by step ...
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Voltage regulators in SPICE software
I am having trouble figuring out how to add voltage regulators to my circuit for SPICE simulation. The regulator is a 78L10AC voltage regulator, 10V, 5% output tolerance, LP package. I have most of my ...
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Spice model, can't figure it out
I am using LTSpice with the following NMOS model from the library included in the famous book 'Sedra & Smith, Microelectronic circuits' :
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Why is my simple boost converter giving me such a high peak output voltage?
I am trying to understand switch-mode power supply fundamentals through a simulation in LTSpice.
I wanted to build an excruciatingly simple boost converter circuit following a teaching model often ...
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Symmetrical components
I am trying to build an abc to positive/negative/zero components transformation block (in LTspice), I did it, but sometimes I get erroneous behaviour: DC levels seem to be "omitted" at the output for ...
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Interpretation of input impedance graph of a filter
I tried to simulate the input impudance of a multipass feedback low pass filter. I want to know if the graph I got is right, and if so, what does it show? Also, what is that dashed line about?
And ...
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DC power supply simulation trouble
I'm trying to simulate a relatively simple AC->DC power supply in LTSpice, but it's not quite cooperating with me. I've followed this schematic:
only replacing potentiometers with resistors due to my ...
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Simulating Multiple Feedback Low Pass filter using LTSPICE
I am trying to simulate the follwoing circuit in LTSpice IV. What I am looking for is overall performance in frequency domain.
I downloaded and readed a lot of LTSpice guides, but none of them were ...
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LTspice automation
I have a battery-powered boost converter and I'm attempting to measure the maximum input (battery) voltage droop under various load conditions of high current draws (different duty-cycles/...
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Why does LTSpice say that my "Matrix is singular" for this ideal-transformer circuit?
I'm trying to do find the voltage over R1 in the following circuit, where L1/L2 is an ideal transformer. LTSpice complains that the "Matrix is singular". Why? I've tried to play around with lots of ...
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