Madscientist
posted this
20 October 2024
Delayed conduction on L3 (POC2). (Chris's non inductive coil experiment replication).
Hello friends, I want to share some experiment on this topic, I have been reading and all the information I came across in the threads timing and Delayed induction with a goal to get voltages up on my partnered output coils.
My thoughts are that timing can help in creating a "delay in conduction" which will lead to "delayed induction" and thus get the voltages up on L2 and L3.
Just an update, I have swapped my 555 timer pulse generator with adrino uno, its much better and can do more than just a single chip.
I came across this project online and studied it, i was conviced this can make me achieve the delayed conduction on my pulses too. the only challenge is that my pulses are 10% dutycycle. And as you see in the gif below their pulses are 50% dutycycle.
https://runtimemicro.com/Projects/Arduino-Timer-Phase-Shifted-Square-Waves

Back to my pulses.
I have 2 pulses here, "Yellow trace "for the IGBT switching L1 and the second pulse "Purple trace" is for the mosfet switching L3.
When these 2 pulses are in phase, "input current drop effect" is still present but gets better when a small controlled delay is present.

The goal here is to delay the pulse switching L3 "Purple trace" by a small angle slowly increasing the angle until the sweet spot is reached, (Input current drop effect and the effect on the lightbulb are both improved).
I made some minor changes in the code and i gained some control of the phase angle/delay.
What in noticed is if the delay increases the amplitude of the sawtooth wave, as the phase angle between these 2 pulses increases, the amplitude of the sawtooth wave also increases.
Below is a 5 degree delay between the 2 pulses.

Up close; This translates to a delay of 10 microseconds which gives a good " input current drop effect" .

The result here is that the "effect" is present and incresed abit but i see no increase in voltages on the partnered output coils, please advise.
Br,
Madscientist