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irishron40
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Joined: 22/09/2014
Location: Ireland
Posts: 254

Posted: 02:21am 25 Jun 2016

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hi. im nearly finished my power supply , but am a bit confused how to connect potentiometers.

am I right to think that the potentio meter be fitted with middle leg onto red line and outerleg to green line?

thank you

ronEdited by irishron40 2016-06-26

irishron40
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Joined: 22/09/2014
Location: Ireland
Posts: 254

Posted: 12:09pm 25 Jun 2016

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I am a bit supprised that after 30 views no one knows the answer to my question.

I am fairly new to electronics , so a simple thing to most would be complicated to me.

ron

Madness

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Joined: 08/10/2011
Location: Australia
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Posted: 12:24pm 25 Jun 2016

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Middle leg is the one with the arrow in the diagram and is the one that moves.

There are only 10 types of people in the world: those who understand binary, and those who don't.

jincamty

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Joined: 10/07/2011
Location: New Zealand
Posts: 21

Posted: 12:37pm 25 Jun 2016

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Hi Ron, You should have three legs on your pot. The middle one will be the green line and the outer two will be each end of the red line. Just Google potentiometer wiring, there are lots of images to describe how.
Just remember some pots are not linear. ie the rate of change of resistance changes.

Cheers Cam.

irishron40
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Joined: 22/09/2014
Location: Ireland
Posts: 254

Posted: 12:51pm 25 Jun 2016

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i wasnt sure. thank both for your help. this will get me to finish my power supply.

ron

irishron40
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Joined: 22/09/2014
Location: Ireland
Posts: 254

Posted: 12:33pm 26 Jun 2016

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i had a look. but like to also include fine tune potentiometer for voltage and on the current control

they show a 5k pot for voltage and 500ohm for current limiter.

what size should the fine tune pots be and also what way are they wired in series. cant seem to find a diagram on google.

thank you.

ron

Madness

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Joined: 08/10/2011
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Posted: 12:37pm 26 Jun 2016

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I suggest you have a good read of this page it will answer all your questions.

http://www.instructables.com/id/How-to-use-Potentiometer-Arduino-Tutorial/

There are only 10 types of people in the world: those who understand binary, and those who don't.

irishron40
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Joined: 22/09/2014
Location: Ireland
Posts: 254

Posted: 01:20pm 26 Jun 2016

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.i read that link. but it doesnt say anything about connecting pots in series. and what vallues. is the way i drawn the 2 potentio meters the right way to wire them to archief course and fine tuning? and can they be both 5k pots?

Edited by irishron40 2016-06-27

MicroBlocks

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Joined: 12/05/2012
Location: Thailand
Posts: 2209

Posted: 08:58pm 26 Jun 2016

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You can use a precision trim pot for fine tuning, that is their purpose. They are available in models that have a have lot more turns allowing very fine adjustments.Edited by MicroBlocks 2016-06-28

Microblocks. Build with logic.

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