Current path for switching circuit

[danilorj]

Hi,

I would like to know if there is any simulation program that allows me to know the current path through any circuit? Let's say to debug the circuit, to know what really happens during the simulation step by step.

Thanks.

[FvM]

What's a "current path through a circuit" for you? Circuit currents are splitted into different pathes in one node and combined in another one. Kirchhoffs current law rules.

The usual way is to record multiple (many) branch currents in a transient simulation.

[danilorj]

A program that does something like this: http://falstad.com/circuit/

[danilorj]

I used this application to simulate this circuit show below:
http://www.falstad.com/circuit/circu...12.8+0+-1+0%0A

But I just cannot understand why it doesn't work for mode 4 as shown in the article: http://ieeexplore.ieee.org.sci-hub.cc/document/5437192/

The current path through the S1 switch diode doesn't appear to me.

[BradtheRad]

I'm watching your schematic run in Falstad's. I guess S1 is the lefthand switch? As far as I can tell, it creates boost converter action.

Here are some tips:

The leftmost diode is unnecessary.

I recommend that you add several scope traces. Look at Ampere waveforms through inductor, switch, righthand diode.

Put 1k ohm resistors across diodes. This reduces false unwanted oscillations at each closing of the switch.

Put 0.1 ohm resistors inline with the capacitors. This reduces instantaneous high current spikes.

For your component values I recommend a timestep of 50n. This makes the waveforms more readable. The simulation pauses less. Do not use the default setting of 5u.