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Originally Posted by Groth
A few inconsistancies between schematic and PCB.  As is, the PWM won't work. |
Damn it. A mistake there. I haven't considered your suggestions yet but the glaring error is that the inverting input to amp4 U1 pin13 should be fed from amp2 U10 pin7 integrator OP. NOT pin 2-5.
U1 is the comparator. U10 is the triangle wave generator. A near exact copy of
this from Maxim. Only component values will be different.