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TinMan
Advanced Member


4082 Posts

Posted - March 11 2012 :  00:08:31  Show Profile Send TinMan a Private Message  Reply with Quote
Please quote the number of the vidio (top left hand corner of description)when asking questions about that vidio.This will insure a quicker responce as it will be easer to work out to which vidio you are asking about.
Example

Vidio 4
What happens if i use smaller capacitor's ?


swim at 90 degrees to the current and gain speed in two directions

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Alt-NerG-Newbie
New Member



USA
4 Posts

Posted - March 30 2012 :  12:30:53  Show Profile Send Alt-NerG-Newbie a Private Message  Reply with Quote
Video 1
(sorry about posting in the wrong section before)

Gday TinMan,
Could you take the wire going from the 12v supply to the pot and connect it straight to where it connects to the caps. Then put the pot on a wire going to the DC out. This way you could still control the output, but you could test the output without a load.

Would there be any disadvantages to building it this way?

The caps should be 10000uf not 100uf, but the program (Fritzing) wouldn't let me enter 10000.

Edited by - Alt-NerG-Newbie on March 30 2012 12:47:29
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TinMan
Advanced Member



4082 Posts

Posted - April 02 2012 :  00:44:12  Show Profile Send TinMan a Private Message  Reply with Quote
Hi ALT
A resistor- pot won't reduce voltage as such- it is used to limit current
If there is no load after the resistor the voltage will remain the same- or very close to
If a load is applied after the resistor then the current will be lowered, so the voltage will drop


swim at 90 degrees to the current and gain speed in two directions

skype-thetinman.69
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Alt-NerG-Newbie
New Member



USA
4 Posts

Posted - April 02 2012 :  02:04:42  Show Profile Send Alt-NerG-Newbie a Private Message  Reply with Quote
Thanks TinMan,
Great explanation. So it really doesn't matter if the pot is before or after the caps, the voltage will always read about the same without a load.
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TinMan
Advanced Member



4082 Posts

Posted - April 04 2012 :  09:23:05  Show Profile Send TinMan a Private Message  Reply with Quote
It may drop slightly but not very much. But once a load is applied and the voltage become's current then the voltage will be adjustable.
I also think pot's like AC a bit more-they dont seem to get as hot with the same amount of current(AC-DC)


swim at 90 degrees to the current and gain speed in two directions

skype-thetinman.69
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Alt-NerG-Newbie
New Member



USA
4 Posts

Posted - April 04 2012 :  12:07:05  Show Profile Send Alt-NerG-Newbie a Private Message  Reply with Quote
Good to know. Thanks again!
quote:
Originally posted by TinMan

It may drop slightly but not very much. But once a load is applied and the voltage become's current then the voltage will be adjustable.
I also think pot's like AC a bit more-they dont seem to get as hot with the same amount of current(AC-DC)


swim at 90 degrees to the current and gain speed in two directions

skype-thetinman.69

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