Without having to buy and ESC, would capacitors wired to a motor change the acceleration (significant amount)?
How large would the capacitors have to be?
Sat Jul 28, 2007 1:25 pm
Glen Experienced Roboteer
Joined: 16 Jun 2004
Posts: 9481
Location: Where you least expect
not at all lol, you could use some massive resistors to limit the speed. some hobby controllers have a servo that switches between 3 resistors to limit the speed. massively innefficient too
a capacitor will only store energy. at best you could only use them to suppress noise and maybe provide a quick burst of current when its needed.. _________________ www.demon50s.com - Minimoto parts
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Sat Jul 28, 2007 1:27 pm
Fish_in_a_Barrel
Joined: 30 Sep 2006
Posts: 673
Location: Perth, Western Australia
I'm assuming your referring to the RC time constant (tor). It is simply worked out to be R x C equals the time taken to get to 63%. Now to get this to work the way you wanted would require a resistor in the supply line going to the capacitor and motor.
Now it all depends on your current and voltage requirements, to determine if this has any chance of working. Post some motor specs and I'll show you if it would work. _________________ They say that he crossed the fine line, from insanity to genius.
Sat Jul 28, 2007 2:52 pm
comanche
Joined: 22 Feb 2007
Posts: 22
Location: melburn
5 time constants = full charge
i study physics
the supply voltage is 7.2v and so is the motor.
currently the amperage is unknown but ill find out by monday.
Sun Jul 29, 2007 11:14 am
Valen Experienced Roboteer
Joined: 07 Jul 2004
Posts: 4436
Location: Sydney
it will probably be in about the 200ma ~ 2A range _________________ Mechanical engineers build weapons, civil engineers build targets
Sun Jul 29, 2007 6:47 pm
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