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Old 05-31-2012, 12:50 PM   #5759 (permalink)
foor
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Quote:
Originally Posted by electricstorm View Post
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?
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.
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The Following 2 Users Say Thank You to foor For This Useful Post:
electricstorm (05-31-2012), MPaulHolmes (05-31-2012)