Ignition primary VS ignition Voltage

Hey Everyone!
Honda ek4 1997
B16A2

I could really use some help on explaining this waveform. As far as i can see and what i have gotten info from other, this is current limiting happening. However there is no current limiting happening. Full disclosure, I am really new to this, trying to learn.



This is only one example.
It seems my psdata file is too big to upload.

Red trace looks like normal primary current, other than being upside down. With no limiting. Everything looks good other than the amp clamp being hooked on backwards.

Then what is the voltage drop on voltage primary?

bjørn.ali.stokman wrote:

Then what is the voltage drop on voltage primary?

You mean voltage drop increasing with current? That's normal. It does kinda look like it jumps near the cursor line in your second pic but that's probably your 'scope. 8 bit vertical with a 20:1 attenuator?

10:1 and 9.5 bit vertical.

John Gillespie mentioned in Facebook group that this is because of impedance dropping?
Do you know of any resources I could read up on the theory if this?
Or anything to watch?

Preferably related to this subject.