I want to find the proper PPM code for my application of varying the firing angles of an SCR. The SCR I am using will be driving a motor directly so the firing angle should start off at around 90 degrees, then to make it's way down to 0 degrees for full voltage across the load. This application is called 'Soft-starting', but before jumping ahead, I need to start with my Arduino program.
I would hope to be able to adjust time time delays between firing my output pulse. The picture below should help visualize what I want my output pulse to achieve:http://bayimg.com/EajEcaAEf
Thank you for your time & knowledge,