Quote:
Originally Posted by electricstorm
Can the control board be tested without the power board as far as using a scope and checking signals? Or is it best to have the whole unit assembled before testing?
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Electricstorm,
if you clip your oscope ground to the top of R17 (FET ground), and attach the signal probe to pin 7 of U7, you should be able to see the 12v PWM trace with period of about 60usec (~16kHz). I also set ki=20 (down from 160) to slow the pwm rise time in order to see the duty cycle changes more clearly. This can be done without the power board attached.