DS520 servo is a generator.lol...

[McKrackin]

After the tail incident,I was turning the servo horn fast back and forth to see if it was stripped.

Wow.That's cool.

It lights up the gyro when I turn it by hand fast enough.

[dubehigh]

if it takes power to run it, it will make power. its DC

[BTCat]

Mar 28, 2010 18:07:36 GMT -6 dubehigh said:

if it takes power to run it, it will make power. its DC

Well, since it's going back and forth, doesn't it make an alternating current? What's the voltage output? Just stick your tongue on it and take a guess ;D

[dubehigh]

no its not bt. i am dunk at this tine of nite and will tell you later how it works

[mimir]

The way brushed DC motors work is by inducing a magnetic field in the coils around the shaft of the motor which are attracted / repelled by the permanent magnets mounted on the can of the motor. Depending on the design there are several coils all of which are connected to several pieces of copper that together form what is called a commutator. This mechanically switches which coil is energized to continue the rotation of the motor. You change the direction the motor travels by changing the polarity of the voltage going to the motor.

When you rotate a dc motor's shaft, the movement of the coil through the magnetic field is what "generates" the voltage. Because the polarity of the magnets is always the same no matter which way you rotate the shaft, the output is always the same polarity. This is why you do not get alternating current from changing the direction of rotation.


Hope that helps.

[dubehigh]

thank you mimir, a little more in depth then i was going to say, but all the same ;D

[McKrackin]

Pinoydad says I should have learned that in the fourth grade.I must have missed it but I was only in fourth grade once and even had to do a few more grades after.They must have cluttered my memory.lol....

[BTCat]

Mar 29, 2010 11:43:23 GMT -6 mimir said:

The way brushed DC motors work is by inducing a magnetic field in the coils around the shaft of the motor which are attracted / repelled by the permanent magnets mounted on the can of the motor. Depending on the design there are several coils all of which are connected to several pieces of copper that together form what is called a commutator. This mechanically switches which coil is energized to continue the rotation of the motor. You change the direction the motor travels by changing the polarity of the voltage going to the motor.

When you rotate a dc motor's shaft, the movement of the coil through the magnetic field is what "generates" the voltage. Because the polarity of the magnets is always the same no matter which way you rotate the shaft, the output is always the same polarity. This is why you do not get alternating current from changing the direction of rotation.


Hope that helps.

Aaah, permanent magnets rather than electro-magnets. I didn't think about that

But seriously, back to the important stuff ---Stick Your Tongue On It! ;D



Trivia: On a much larger scale, the making and breaking of a magnetic field created by very strong magnets acting on non-ferrous material produces a unique frequency as the non-ferrous material "snaps back" into its unpolarized position. With the aid of computers, the frequency can be read and turned into an image. That's this layman's totally unscientific, very simplistic, marginally accurate explanation of an MRI. More Trivia: Almost every modern imaging technique found in hospitals today had its scientific origin in the mid 19th and early 20th century - Echocardiogram, ultrasound, MRI, CT, X-ray - but did not come to fruition until technology caught up (with the exception of x-ray). Christian Doppler (mid-19th century), Albert Einstein and Marie Curie were the top dogs. Einstein and Curie used to go on vacation together Einstein had his start in his father's generator shop. Trivia off.

[akent]

Here's all you need to know:

Motors =suckie= electricity.

Generators are motors that something turns so they =makie= electricity.

Batteries are things that =keepie= electricity.

So, all you have are three things:
1. Makie
2. Keepie
3. Suckie

Things that suckie can makie. Things that makie can suckie. Things that keepie do suckie but cannot makie.

Nothing else matters.
Kent

[Solitaire]

Interesting terminology, Kent.
Industry standard?

You crack me up.

[mimir]

Sorry if I got too detailed. Tell you what, I'll buy everyone a round!

[BTCat]

Mar 29, 2010 21:40:23 GMT -6 mimir said:

Sorry if I got too detailed. Tell you what, I'll buy everyone a round!

Too Detailed? I don't understand ;D

Now Kent using all those engineering terms ... that's a different story ;D

[19000rpm]

Mar 30, 2010 4:55:26 GMT -6 BTCat said:

Mar 29, 2010 21:40:23 GMT -6 mimir said:

Sorry if I got too detailed. Tell you what, I'll buy everyone a round!

Too Detailed? I don't understand ;D

Now Kent using all those engineering terms ... that's a different story ;D

Highly technical. Sounds like Kent must have spent some time at the Vietnamese Electrical Engineering Institute and Brothel College ;D

[dubehigh]

[BTCat]

Am I the only one retentive enough to get my Fluke out to see what kind of voltage a servo will put out? Not one other person? Or are you just not going to admit it?

My little Futaba S3114 puts out a max of 2.7 volts DC. My cheapo HXT900 will only get 1.7.