carlitoco
18.02.2009, 22:57
Habe da etwas gefunden, was ich interessant finde.
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Regulating Voltage to a Servo
As you should already know, servos have a voltage rating. Go above that voltage and your servo overheats and possibly fries. So suppose you have a 7.2V battery and you want to use a 5V regulator to power your servos, is that a good idea?
Short answer: No!
Longer answer . . . it will work, but its a huge waste of battery power.
So lets say you have your 7.2V regulated to 5V and the servos draw a total of 1.5A of current.
Wasted power is:
(7.2V-5V)*1.5A = 3.3W
Percentage wise, its
(7.2V-5V)/7.2V = 30.6%
Thats the battery energy percentage wasted to thermal heat - almost 1/3rd!!!
Speaking of heat, your voltage regulator probably has thermal shutdown, meaning that if it overheats it will throttle down current to your servos - meaning your servos will have lower torque and lower speed. If your voltage regulator doesn't have thermal shutdown, it will just fry instead (not a good thing).
But if you still really really need to regulate for servos, get a switching regulator (like ~83% efficiency on average).
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Habe jedoch Bedenken die Methode aus zu probieren.
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Regulating Voltage to a Servo
As you should already know, servos have a voltage rating. Go above that voltage and your servo overheats and possibly fries. So suppose you have a 7.2V battery and you want to use a 5V regulator to power your servos, is that a good idea?
Short answer: No!
Longer answer . . . it will work, but its a huge waste of battery power.
So lets say you have your 7.2V regulated to 5V and the servos draw a total of 1.5A of current.
Wasted power is:
(7.2V-5V)*1.5A = 3.3W
Percentage wise, its
(7.2V-5V)/7.2V = 30.6%
Thats the battery energy percentage wasted to thermal heat - almost 1/3rd!!!
Speaking of heat, your voltage regulator probably has thermal shutdown, meaning that if it overheats it will throttle down current to your servos - meaning your servos will have lower torque and lower speed. If your voltage regulator doesn't have thermal shutdown, it will just fry instead (not a good thing).
But if you still really really need to regulate for servos, get a switching regulator (like ~83% efficiency on average).
**********
Habe jedoch Bedenken die Methode aus zu probieren.