Hi!
I know this might be very specific to drones and automation but I will try to make it comprehensive
I've had this issue when powering certain drone ESCs through a linear bench PSU where the startup beacon seems to trigger OCP thus failing to start
For anyone that has worked with BL_Heli ESCs, it is the bootup tone you hear on startup that is produced by exciting the motors
My previous PSU (a fairly old motech/amrel LPS-305 triple output) had a pretty long transient response time of 200us, which I assumed to be part of the issue, so I upgraded to one with a much lower value of <50us (a 2007 Motech/BK Precision LPS-505N), but that didn't resolve it!
Even when setting both main outputs in parallel to double the current capacity to 6A, it just won't start, keeps triggering OCP and rebooting
So far I've also tried using fatter leads, adding a small capacitor, but still no beans.
Does that sound in any way like an issue you've experienced before?
The weird part is, it only does it with some of the smallest size 1S motors; 0802-1002 19-25000kv spinners. Even my larger 1S 18650 Wingman with 1202.5 11500kV spinners -and the same ESC manages to start fine.
And of course 3" 3S, 4S and even 5" 5s are no issue
How could it be?
Could using a larger cap/cap bank to further smooth out the transients help? how would I measure/calculate the capacitance required?
Thanks!