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Hypothetical Servo Wire Shorting Question

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Old 10-20-2007, 08:21 PM
  #1
jkhorvath
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Default Hypothetical Servo Wire Shorting Question

I need more information concerning this excerpt from the Power Expander Pro's User Guide:

Quote:
All receiver channels have each servo signal output individually buffered. If a servo were to short out its signal wire, the other servos on that channel would not be affected.
I take this to mean, in my own words, that if the signal wire on a servo shorts out to the servo wire's positive or negative power wire, then all the other servos on that same channel (same channel, but different Power Expander output port) and all the servos on any other channel's output port will continue to receiver normal battery power and normal receiver signal. In addition, the battery or batteries will not be affected (typically by attempting to deliver more electrical power). Is this correct?

Also, what if one of the servo's power lines shorts out to the other power wire (not the signal wire)? Is this managed in a similar manner?
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Old 10-21-2007, 10:11 AM
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rrritchey
 
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Default RE: Hypothetical Servo Wire Shorting Question

Hi,
This means that if the servo signal wire shorts the other servo signal wires on the same port will not be affected. The battery may be affected but a shorted signal wire will have a limit on the amount of extra current it could request from the battery, but I don't know exactly what that is. The power and ground leads to each servo do not have any kind of protection on them. If they short there is no way to say what will happen.
Let me know if you have any other questions.
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Old 12-10-2007, 02:52 AM
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superdave01
 
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Default RE: Hypothetical Servo Wire Shorting Question


Quote:
ORIGINAL: rrritchey

Hi,
This means that if the servo signal wire shorts the other servo signal wires on the same port will not be affected. The battery may be affected but a shorted signal wire will have a limit on the amount of extra current it could request from the battery, but I don't know exactly what that is. The power and ground leads to each servo do not have any kind of protection on them. If they short there is no way to say what will happen.
Let me know if you have any other questions.
Makes no sence, signal wire of port one shorthing to another signal wire of the same port would be as if no short at all.
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Old 12-10-2007, 09:12 AM
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Default RE: Hypothetical Servo Wire Shorting Question

Hi,
I think you misunderstood what I was trying to say. I am saying if a servo signal wire on a port were to short to ground or positive then the other servo outputs on that port would not be affected.
Let me know if you have any other questions.
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