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Unread 10-12-2009, 07:49
Unsung FIRST Hero
Al Skierkiewicz Al Skierkiewicz is offline
Broadcast Eng/Chief Robot Inspector
AKA: Big Al WFFA 2005
FRC #0111 (WildStang)
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Re: Speed Controller Preference

Quote:
Originally Posted by Alan Anderson View Post
I thought there was a teensy bit of time where the Jaguar output is shut off even when at a nominal 100% output. Something to do with recharging a capacitor that keeps it on? I suppose it doesn't count as "modulation", though.
Alan,
You are correct but I discounted that short pulse as it is not under the control of the operators. From the Jaguar manual...
The MDL-BDC software intermittently switches to the low-side MOSFETs for a short duration to replenish the bootstrap capacitor. The short duration has no impact on motor speed.
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Good Luck All. Learn something new, everyday!
Al
WB9UVJ
www.wildstang.org
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Storming the Tower since 1996.