Linked Questions

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1answer
77 views

SMPS Simulation Help

Finally bit the bullet and considered getting help with a simulation I'm looking to get right. Just a heads up, I have limited experience with SMPS simulation in both LTSpice and Multisim. The circuit ...
1
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1answer
367 views

Help with LTspice inverter simulation

I am trying to simulate a basic inverter circuit in LTspice. For some reason I am unable to obtain 48V peak to peak across the resistor R1 which only shows about 6Vp-p (indicated by the blue square ...
1
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1answer
234 views

Isolated three level pwm LTSPICE

I am doing a simulation on LTSpice of a three level ANPC. The ground is connected to the neutral point (i.e in the middle point of the DC input) and the gate drivers are isolated by using a DC DC ...
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1answer
114 views

Set parameter from voltage output (LTspice)

I have PULSE(0 123 0 0.0000001 0.0000001 0.0000333 0.0000666) and I want to change the sixth parameter according to a voltage source output. I need to alter the parameter to make sine wave. How could ...
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1answer
65 views

Three-phase inverter simulation - incorrect result

while simulating a three-phase inverter circuit with a three-phase load circuit. the simulation result seems incorrect. here is my circuit and simulation result. the input voltage is 300v the output ...
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1answer
108 views

h bridge motor circuit on LT specie

I've been working on a project where i'm building a h bridge motor circuit i have easily spent 15 hours on it and have made extremely slow progress on it in the last 3 days. The project sheet is seen ...
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1answer
185 views

Maximum AND minimum duty cycle in SPICE converter simulation

I am modeling a Push-Pull Converter in LTSpice and implemented this for a simple voltage feedback PWM control. This works great and I have added a bit on the end that allows for a maximum duty cycle ...
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1answer
180 views

I'm trying to build an inverter circuit in LTspice using voltage controlled switches

I'm trying to build a H-bridge inverter circuit on LTspice, but I'm having trouble with getting a correct waveform. The upper and lower switches do not appear to be in sync (i'm not getting a complete ...
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1answer
340 views

three phase inverter design in ltspice

I have designed three phase inverter in ltspice with SPWM technique using mosfet switch. the output voltage at the load is incorrect. could anyone please tell me what is wrong in the simulation to get ...
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0answers
40 views

How to create timing waveforms for an H-Bridge Inverter

This is my first question on Stack Exchange. I am in the process of simulating a wireless charger coil setup on LTSpice. I have tried a Royer/Baxandall oscillator to provide the necessary sinusoidal ...
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0answers
24 views

create phase delay between square pulses in psim

i want to create phase delay between square pulses so that the mosfets don't overlap. block C was created to turn on-off the mosfet. however I am not allowed to use the 3 available square pulses as ...
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0answers
22 views

How can i get a second PMW signal that ranges from -7V to 0V for this H bridge circuit?

This is the circuit i built. The data sheet for U1 and U2: https://www.vishay.com/docs/83666/sfh610a.pdf Currently when i run the circuit and place the curser on the right side of V1 this is the ...
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0answers
38 views

Why my gate driver output has spikes?

I am doing a sound amplifier using LTspice and I would like to know if someone know why my gate driver output has spikes only when it is connected to the half-bridge circuit. The INP terminal is ...
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0answers
32 views

Issue with H-Bridge simulation waveform

I've built a simple H-bridge circuit with LTSpice: DirSigA (blue), DirSigB (red) and Vout (green) waveforms: DirSig A and B are both pulse signals with a Vmax of 5v. I've been tinkering with the ...
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0answers
86 views

H-bridge produces square wave output under heavy inductive load instead of sine wave

I was Following this tutorial to make H-Bridge. I have first did some simulation and the following image shows the same. I don't have schematic because I directly made the circuit by hand based of ...

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