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Author Topic: Pulse motor build off time.  (Read 116418 times)

ramset

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Re: Pulse motor build off time.
« Reply #120 on: December 02, 2014, 03:41:42 PM »
Mark E
works here
[you have to read the previous few posts]


https://www.youtube.com/watch?v=CecIq4G5lFE


Tom
Next year http://keelynet.com/energy/clemindex.htm


Maybe a simple engine category ?
or engine efficiency category ??  8)



put some real Meat on the table....
thx
Chet
PS
Yes I see below ,NOW  you read Tom's comment on the previous Page.
a contest is a foot
 
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MarkE

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Re: Pulse motor build off time.
« Reply #121 on: December 02, 2014, 03:57:24 PM »
Quote from: ramset on December 02, 2014, 03:41:42 PM
Mark E
works here
[you have to read the previous few posts]


https://www.youtube.com/watch?v=CecIq4G5lFE


Tom
Next year http://keelynet.com/energy/clemindex.htm


Maybe a simple engine category ?
or engine efficiency category ??  8)



put some real Meat on the table....
thx
Chet
Chet that's not the PWM video.  I read further on that Tom doesn't want to expose all his work before the contest ends.
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TommeyLeeReed

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Re: Pulse motor build off time.
« Reply #122 on: December 02, 2014, 04:12:10 PM »
Hi all,

Just for the day I will allow to show this second test run....

https://www.youtube.com/watch?v=KwR6fkkr_w8

Tom
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MarkE

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Re: Pulse motor build off time.
« Reply #123 on: December 02, 2014, 04:28:08 PM »
Quote from: TommeyLeeReed on December 02, 2014, 04:12:10 PM
Hi all,

Just for the day I will allow to show this second test run....

https://www.youtube.com/watch?v=KwR6fkkr_w8

Tom
It looks great.
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shylo

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Re: Pulse motor build off time.
« Reply #124 on: December 02, 2014, 07:23:00 PM »
Hi All, I put a video on you tube but I don't know how to put in the link?
http://youtu.be/Pzgq5qqquel
Just to show anyone can build and experiment.
I gotta get more coils.
artv
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MarkE

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Re: Pulse motor build off time.
« Reply #125 on: December 02, 2014, 07:27:46 PM »
shylo the video shows as unavailable.
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shylo

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Re: Pulse motor build off time.
« Reply #126 on: December 02, 2014, 07:43:59 PM »
I don't know how to do the link
Type this in the address bar, https://www.youtube.com/watch?v=Pzgq5qqquel&feature=youtu.be
I suck at computers
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ramset

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Re: Pulse motor build off time.
« Reply #127 on: December 02, 2014, 07:53:15 PM »
Shylo
the pitts are open for a little while longer to the public,and  then the Crew chief
says no more views until the Race [or contest day]


here watch it while its up [then it will be removed[ until the next time  ;D ]]


https://www.youtube.com/watch?v=KwR6fkkr_w8 [copy paste it into address bar]


enjoy
Chet
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MarkE

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Re: Pulse motor build off time.
« Reply #128 on: December 02, 2014, 08:06:09 PM »
Quote from: shylo on December 02, 2014, 07:43:59 PM
I don't know how to do the link
Type this in the address bar, https://www.youtube.com/watch?v=Pzgq5qqquel&feature=youtu.be
I suck at computers
With the video up, go to the address bar of your browser, hit the home key, then hold down the shift key and hit the end key.  Release both keys. The entire address should then be highlighted. Hold down the ctrl key and then click c. (Or go to the browser menu and click Edit Copy) The whole address should then be copied into the computer's clipboard memory.  Paste the address using Ctrl V or Edit Paste.
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shylo

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Re: Pulse motor build off time.
« Reply #129 on: December 02, 2014, 08:31:33 PM »
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MarkE

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Re: Pulse motor build off time.
« Reply #130 on: December 02, 2014, 08:39:46 PM »
I think that the simplicity is ingenious.  The reason that the capacitor charges above the battery voltage is that the capacitor is charged by the flyback action of the coil.  First current builds up in the coil when the battery is connected across it, and then when you interrupt the negative side of the coil that voltage "flys back" untill the diode conducts and the current flows into the capacitor.  The capacitor voltage charges up each time that happens.  The voltage goes down as you drain charge out of the capacitor.
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shylo

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Re: Pulse motor build off time.
« Reply #131 on: December 03, 2014, 12:24:49 AM »
Thanks Mark, that makes sense,
If I had more generating coils, I could up the speed of the pulses to the battery,?
That should help right?
artv
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MarkE

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Re: Pulse motor build off time.
« Reply #132 on: December 03, 2014, 12:53:50 AM »
Quote from: shylo on December 03, 2014, 12:24:49 AM
Thanks Mark, that makes sense,
If I had more generating coils, I could up the speed of the pulses to the battery,?
That should help right?
artv
If you go to more than two coils then you will have more average torque that will accelerate the wheel and your switches will turn on and off faster.  You will also be dumping more power into your capacitor because of the additional coils and the faster operation.  At some point you will need to be mindful of the power dissipation in whatever you are using to discharge the capacitors as well as how high the capacitors charge.
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ramset

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Re: Pulse motor build off time.
« Reply #133 on: December 03, 2014, 09:09:11 AM »
here we have another entry ready for prime time


https://www.youtube.com/watch?v=tgX5cz1SMiw


enjoy


@Toad
keep a flipper to the ground [sending a PM]
[not sure if toads has ears.... :o ]


thx
Chet
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shylo

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Re: Pulse motor build off time.
« Reply #134 on: December 03, 2014, 10:34:41 AM »
Hi Mark, you say I will have to be mindful of the power disapation for what I'm using to dump the caps.
The first switch I show is what dumps the caps ,it is just controlled by a passing magnet that cuts off the drive coils and engages the caps for discharge.
How can there be any power drain here?
Thanks for your time.
artv
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