Oh ok, some posts back, maybe a page or two, a comment was made, "this is draggng now" Not my comment. Anyway I will keep you updated then.
I do plan to improve layout on a second board, maybe I should have breadboarded this, but it's one item I didn't have yet. Also this simulation software would be useful. I'm not 100% sure, but I think with a base resistor of 100R value, it's not enough to bias the transistor. This is just a thought, I'm no expert just a newbie.
My final goal is a PSU that can comftably run up to 20 Amps, but typically 15 Amps 50% duty cycle. Ideally with about 4 x MJ11015 transistors. But it's a strange thing acquiring an extra 5 Volts with an R7 value of 100R.
I will try 100R for R7 again, a suggestion was made else ware to change the ceramic power resistor to 1R or even 2R value, and this would work with an R7 value of 100R. But I thought then that the power resistor would need i increasing in wattage. But it something to try. thanks for the positive reply.
I do plan to improve layout on a second board, maybe I should have breadboarded this, but it's one item I didn't have yet. Also this simulation software would be useful. I'm not 100% sure, but I think with a base resistor of 100R value, it's not enough to bias the transistor. This is just a thought, I'm no expert just a newbie.
My final goal is a PSU that can comftably run up to 20 Amps, but typically 15 Amps 50% duty cycle. Ideally with about 4 x MJ11015 transistors. But it's a strange thing acquiring an extra 5 Volts with an R7 value of 100R.
I will try 100R for R7 again, a suggestion was made else ware to change the ceramic power resistor to 1R or even 2R value, and this would work with an R7 value of 100R. But I thought then that the power resistor would need i increasing in wattage. But it something to try. thanks for the positive reply.