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› //// Any damage if a 4700uf capacitor with power & signal?
10-25-2014 07:28 AM  4 years agoPost 1
Heli Fanatix

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Fountain Valley, CA

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I have an important question:
I was experimenting to see if a 4700uf capacitor would help. I accidentally plug it backwards with the capacitor negative lead to the signal side servo lead of the HC3-SX (4th cyclic servo port).
I've never used that port and don't know if that port is damage but the the rest of the cyclic is working.

The HC3-SX itself didn't initialize but tried a few times.

Could I have damaged anything by plugging it in backwards?

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10-25-2014 12:14 PM  4 years agoPost 2
Ace Dude

rrProfessor

USA

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10-25-2014 08:00 PM  4 years agoPost 3
Heli Fanatix

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Fountain Valley, CA

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This is if you reverse the Glitch Buster's + with the FBL's - completely.

I just plugged the Glitch Buster's - to FBL's Signal.

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10-26-2014 12:25 AM  4 years agoPost 4
Retired2011

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Lee's Summit, MO

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Glitch Buster's
Who you gonna call?

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10-27-2014 11:42 PM  4 years agoPost 5
EEngineer

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TX

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The cap is probably damaged...I'd replace it.

Did it "pop"?

Usually an electrolytic cap(which is polarized) will pop or the can will be distorted.

I doubt you hurt anything else.

FWIW

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10-28-2014 04:24 PM  4 years agoPost 6
Heli Fanatix

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Fountain Valley, CA

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Again ... The capacitor's input polarity WAS NOT reverse.

I understand that part. The cap's positive still saw center pin (+) and instead of ground pin ... I plugged the other side in the signal pin of FBL instead

Hence ... The capacitor did not pop and still functional.

BTW
I was told by some that since the capacitor was not charge, no harm could be done.

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10-28-2014 05:16 PM  4 years agoPost 7
GyroFreak

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Orlando Florida ...28N 81W

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Even tho the capacitor is not charged, it may well caused a surge current into the control port and damaged it due to the cap charging from the Vcc (center pin +) to the control port.
That size cap would be like connecting Vcc to the control port directly for a 1/2 sec or so.

EDIT: I don't know if connecting Vcc to the control port would cause damage, but that cap may have done the same thing.

I think about the hereafter. I go somewhere to get something, then wonder what I'm here after ?

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10-29-2014 12:34 AM  4 years agoPost 8
EEngineer

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TX

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I was told by some that since the capacitor was not charge, no harm could be done.
Misread you post, sorry.

I would agree with the above.

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10-29-2014 07:12 PM  4 years agoPost 9
Dr.Ben

rrMaster

Richmond, VA, USA

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Good. I would not have wanted to have told him wrong.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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10-29-2014 09:22 PM  4 years agoPost 10
Climax

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West London, United Kingdom

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Most output signals that originate from internal microcontrollers etc. will usually include series termination resistors of a few 100 Ohms.

Often one of the functions of these resistors is to limit the output current in the case of a short (if chosen appropriately) to a value within the maximum spec of the microcontroller etc. So generally speaking these types of "accident" don't cause any damage...

Electronics, Physics, Helicopters, Fixing Things...

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10-30-2014 01:50 AM  4 years agoPost 11
EEngineer

rrProfessor

TX

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Good. I would not have wanted to have told him wrong.

Ben Minor

Me either.

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