All Questions
Tagged with ltspice simulation
477
questions
2
votes
0
answers
32
views
Where should I take the measurement from to find the correct attenuation level of a resistive pi attenuator?
I am currently designing a resistive attenuator for an RF project I'm working on. I wanted to have several resistance combinations to obtain various attenuation levels (1-8 dBs). When I calculate the ...
0
votes
1
answer
46
views
How can I simulate an RF signal as received by an antenna in LTspice?
How can I simulate an RF signal as received by an antenna in LTspice?
I am designing a simple HF RF receiver and want to test it via LTspice. Can I simulate an RF signal as:
A pure voltage source, ...
- 1,225
2
votes
1
answer
54
views
I am Seeking Help to Adjust DC Motor Simulation Parameters in LTspice for Accurate Current Modeling
I'm relatively new to LTspice and motor diagnostics, but I have managed to build a PWM-MOSFET control circuit for a DC motor. My goal is to simulate this project to evaluate potential ripple currents ...
- 63
0
votes
1
answer
49
views
Iterative Simulation LTspice Model using Python
I'm new to python. I have a python code to simulate my LTspice model. I need to change the on time in the pulse parameters and I need a large number of simulations for at least 100 different Ton. So I ...
- 21
2
votes
1
answer
79
views
Pi-Filter Simulations Comparison
I am trying to simulate the filter impedances on LTspice. There are two images of the simulation results of the same pi-filter on LTspice and Redexpert. Although I am not sure the parameters are ...
- 94
0
votes
0
answers
41
views
3 phase inverter with IR2110 LTspice
I am trying to implement a 3 phase inverter using IR2110 (model downloaded from infineon website) as gate drivers. I have tried to simulate the circuit using LTspice but I am having some issues.
This ...
0
votes
0
answers
22
views
How to stimulate PSRR of LT3060-2.5 and LT1761-2.5 in LTspice?
I tried following the steps on the analog devices website but it seems that with these components the results are not close to the datasheet while when I try this method with others it works.
Do you ...
- 69
1
vote
1
answer
52
views
Why does the opamp output not swing to vdd or vss in the simulation?
Why does the output of the opamp not rail to VDD or VSS when the positive feedback factor (2/3) is larger than the negative feedback factor (1/2)?
...
- 292
1
vote
1
answer
113
views
How can I simulate driving a high capacitance MOSFET with a gate driver IC?
I'm trying to drive a MOSFET with approximately 2nF of capacitance, using a 1EDN7511B gate driver.
Following the data sheet sample circuit, I created this:
and tried to simulate it on LTSpice using ...
- 1,225
2
votes
1
answer
86
views
Simulation problem in half bridge leg of an inverter
I am simulating Half Bridge Leg on an inverter. From the simulation, I could not understand why I was not getting proper dead time between high and low side fets. However, I set a delay time of 150ns ...
- 31
0
votes
2
answers
102
views
LT spice, JK Flip Flop: Wrong behaviour when J K and Clock are high
Here's a picture of a JK Flip Flop I try to simulate with NAND gates:
This is the behavior I would expect; if Clk, J and K are all high, Q_n+1 should be negated Q_n:
However this is what I'm ...
- 175
3
votes
2
answers
156
views
Why is my Thevenin voltage result wrong in LTspice?
I want to simulate the Thevenin voltage of the circuit below, where Z2 is the load, in LTspice. Does anyone know what is wrong here? The result is incorrect; the correct Thevenin voltage should be ...
- 698
5
votes
2
answers
191
views
Band Pass Filter Design Simulation
I'm trying to simulate a bandpass filter in ltspice.
bandpass filter should be in the 2-5 Hz frequency range
I calculated the capacitor and resistor value for this range. However, the simulation ...
- 59
2
votes
1
answer
121
views
LTspice and ngspice simulation results differ by 5-6GHz
I simulated a basic CMOS inverter based 3 stage ring oscillator in both LTspice and ngspice, using the same model files (using NCSU's freepdk45 models (VTG slow slow corner)). I expected there to be ...
- 505
1
vote
1
answer
117
views
Designing circuit parameters with NPN-PNP transistors -LTspice simulation
Below is a part of the circuit I created to drive the MOSFET (it includes level shift, power stage etc.).
Datasheet of 2SC2411K: https://fscdn.rohm.com/en/products/databook/datasheet/discrete/...
- 405