Foxs Mercantile wrote:


If anyone recognises this waveshape and knows what causes
it, that'd be "awesome"

Not sure what's causing it, but it's indicative of a non-
linear load. The "knee" is where the load transitions from
one value to a smaller value.



** The "knee" or bump on the saw tooth is caused by electro cap ESR.

If you add a say a 1 ohm resistor in series, the bump will get much larger.

The bump is visible, along with ripple, on most unregulated DC supplies.



..... Phil