Square wave overshoot

[anatech]

Correct, normally mounted with the drivers on a small heat sink.

 

[catd]

Yes, I didn't think of that in a hurry, sorry.
But you can change it accordingly in the simulation and the formulas

 

[wparks]

Mixing other transistor types can also reduce overshoot. e.g. using MJE340/350 for Q5/Q13 instead of BD139/140.
Or keeping BD139/140 but using other output transistors, like 2SA1294/2SC3263, just to give an example.

Hi catd- you have a lot of experience here. Can you possibly explain for my education the rational of the above statement? What datasheet qualities are you looking at and what effect/strategy is in mind?

 

[catd]

Hi catd- you have a lot of experience here.

no

Can you possibly explain for my education the rational of the above statement?

no

What ....
....strategy is in mind?

trial and error

 

[anatech]

It's a simulation. Those details will be different in real life, and with different PCB layouts. Don't sweat stuff like this.