Article on Replacement of potentiometers in todays electronic

Discussion in 'Electronic Design' started by sonnichjensen@gmail.com, Jan 6, 2014.

  1. Guest

    Hi all

    I once read an article on how potentiometers are replaced in todays electronic, by digatal ways....

    Does this ring a bell for anyone?

    WBR
    Sonnich
     
    , Jan 6, 2014
    #1
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  2. amdx Guest

    On 1/6/2014 1:39 PM, wrote:
    > Hi all
    >
    > I once read an article on how potentiometers are replaced in todays electronic, by digatal ways....
    >
    > Does this ring a bell for anyone?
    >
    > WBR
    > Sonnich
    >


    > http://www.analog.com/en/digital-to-analog-converters/digital-potentiometers/products/index.html


    > https://www.sparkfun.com/products/10613


    > http://en.wikipedia.org/wiki/Digital_potentiometer


    > https://www.google.com/search?q=dig...m%2Fapp-notes%2Findex.mvp%2Fid%2F3970;519;348


    Hope that gets you started.
    Mikek
     
    amdx, Jan 6, 2014
    #2
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  3. Jeff Urban Guest

    In brownwares I only see actual pots where the voltage is too high or
    there is another reason, such as high end audio.
     
    Jeff Urban, Jan 6, 2014
    #3
  4. <> schreef in bericht
    news:...
    > Hi all
    >
    > I once read an article on how potentiometers are replaced in todays
    > electronic, by digatal ways....
    >
    > Does this ring a bell for anyone?
    >
    > WBR
    > Sonnich


    Ever seen a potentiometer in a remote control? In todays monitors? In a
    mobile phone? An MP3 player?

    petrus bitbyter
     
    petrus bitbyter, Jan 6, 2014
    #4
  5. Greegor Guest

    <> schreef in bericht
    > Hi all
    > I once read an article on how potentiometers
    > are replaced in todays electronic, by digatal
    > ways.... Does this ring a bell for anyone?
    > WBR
    > Sonnich


    petrus bitbyter wrote:
    > Ever seen a potentiometer in a remote control?
    > In todays monitors? In a mobile phone?
    > An MP3 player?
    > petrus bitbyter


    Still very common in amplified speaker sets
    to use with computers or MP3 players.

    Cheap alarm clock radios still use pots.

    Google on "digital potentiometer".
    I just got got "About 1,540,000 results".

    Most of the chips for that are just over a buck.

    Some of those are for rotary controls
    but some others are for up/down buttons.

    Some of these chips appear to be made
    to drop in place of variable resistors,
    while some others seem to be integrated
    into amplifiers.

    If you've already got a uC it can be
    done without such a chip using two
    input lines w/ buttons.

    Expect production levels of carbon
    potentiometers to stabilize at a
    very low level (specialty item)
    because of fewer uses.

    One big plus is that lots of these
    digital potentiometers work with
    remote control input.
     
    Greegor, Jan 7, 2014
    #5
  6. miso Guest

    wrote:

    > Hi all
    >
    > I once read an article on how potentiometers are replaced in todays
    > electronic, by digatal ways....
    >
    > Does this ring a bell for anyone?
    >
    > WBR
    > Sonnich


    I've got a decent stash of 10 turn posts. Some of the cheap PCB
    variety. But a few are the 10 turns with attached verniers. Long live
    analog!

    They do make Chinese knock offs:
    http://www.circuitspecialists.com/xsn-vernier.html
     
    miso, Jan 7, 2014
    #6
  7. josephkk Guest

    On Mon, 6 Jan 2014 23:16:14 +0100, "petrus bitbyter"
    <> wrote:

    >
    ><> schreef in bericht
    >news:...
    >> Hi all
    >>
    >> I once read an article on how potentiometers are replaced in todays
    >> electronic, by digatal ways....
    >>
    >> Does this ring a bell for anyone?
    >>
    >> WBR
    >> Sonnich

    >
    >Ever seen a potentiometer in a remote control? In todays monitors? In a
    >mobile phone? An MP3 player?
    >
    >petrus bitbyter
    >

    Well not exactly, i saw a motorized pot controlled by a remote control.
    (Medium grade stereo). Is this close enough for you?

    ?-)
     
    josephkk, Jan 7, 2014
    #7
  8. Guest

    On Mon, 06 Jan 2014 15:38:32 -0500, Jeff Urban <>
    wrote:

    >In brownwares I only see actual pots where the voltage is too high or
    >there is another reason, such as high end audio.


    Even there (high-end audio), it's digital with perhaps a rotary
    encoder to make people happy. ...or by "high-end" did you mean
    "audiophool" class? ;-)
     
    , Jan 7, 2014
    #8
  9. Guest

    On Mon, 6 Jan 2014 16:32:09 -0800 (PST), Greegor <>
    wrote:

    ><> schreef in bericht
    >> Hi all
    >> I once read an article on how potentiometers
    >> are replaced in todays electronic, by digatal
    >> ways.... Does this ring a bell for anyone?
    >> WBR
    >> Sonnich

    >
    >petrus bitbyter wrote:
    >> Ever seen a potentiometer in a remote control?
    >> In todays monitors? In a mobile phone?
    >> An MP3 player?
    >> petrus bitbyter

    >
    >Still very common in amplified speaker sets
    >to use with computers or MP3 players.


    MP3 players? My iPod doesn't have a pot. ;-)

    >Cheap alarm clock radios still use pots.
    >
    >Google on "digital potentiometer".
    >I just got got "About 1,540,000 results".


    "Digital potentiometer" is one of the devices one uses to avoid pots.
    ;-)
     
    , Jan 7, 2014
    #9
  10. Greegor Guest

    G > Google on "digital potentiometer".
    G > I just got got "About 1,540,000 results".

    krw > "Digital potentiometer" is one of
    krw > the devices one uses to avoid pots.
    krw > ;-)

    I assume they don't all work exactly the same.
    How many of them work like voltage dividers
    and could be subbed in for older pots?
    There are others that are not just voltage dividers, right?

    It occurs to me that some are probably designed
    to work with rotary encoders rather than
    simple up/down buttons, too.

    Through a uP they can function as either
    linear or audio taper, I suppose.

    Do any have setpoints that don't get lost
    each time the device powers down?
     
    Greegor, Jan 8, 2014
    #10
  11. Artem Guest

    On Wednesday, January 8, 2014 1:08:06 PM UTC+2, Greegor wrote:

    > Do any have setpoints that don't get lost
    >
    > each time the device powers down?

    MCP4021
     
    Artem, Jan 8, 2014
    #11
  12. "Greegor" <> schreef in bericht
    news:...
    > <> schreef in bericht
    >> Hi all
    >> I once read an article on how potentiometers
    >> are replaced in todays electronic, by digatal
    >> ways.... Does this ring a bell for anyone?
    >> WBR
    >> Sonnich

    >
    > petrus bitbyter wrote:
    >> Ever seen a potentiometer in a remote control?
    >> In todays monitors? In a mobile phone?
    >> An MP3 player?
    >> petrus bitbyter

    >
    > Still very common in amplified speaker sets
    > to use with computers or MP3 players.
    >
    > Cheap alarm clock radios still use pots.
    >
    > Google on "digital potentiometer".
    > I just got got "About 1,540,000 results".
    >
    > Most of the chips for that are just over a buck.
    >
    > Some of those are for rotary controls
    > but some others are for up/down buttons.
    >
    > Some of these chips appear to be made
    > to drop in place of variable resistors,
    > while some others seem to be integrated
    > into amplifiers.
    >
    > If you've already got a uC it can be
    > done without such a chip using two
    > input lines w/ buttons.
    >
    > Expect production levels of carbon
    > potentiometers to stabilize at a
    > very low level (specialty item)
    > because of fewer uses.
    >
    > One big plus is that lots of these
    > digital potentiometers work with
    > remote control input.


    Oh, there are still pots and there will be pots for quite some time. But
    when I have to ring a bell for every pot that was replaced by electronics I
    would be deaf long before I was done.

    petrus bitbyter
     
    petrus bitbyter, Jan 8, 2014
    #12
  13. "Jim Thompson" <> schreef
    in bericht news:...
    > On Wed, 8 Jan 2014 18:17:07 +0100, "petrus bitbyter"
    > <> wrote:
    >
    >>
    >>"Greegor" <> schreef in bericht
    >>news:...
    >>> <> schreef in bericht
    >>>> Hi all
    >>>> I once read an article on how potentiometers
    >>>> are replaced in todays electronic, by digatal
    >>>> ways.... Does this ring a bell for anyone?
    >>>> WBR
    >>>> Sonnich
    >>>
    >>> petrus bitbyter wrote:
    >>>> Ever seen a potentiometer in a remote control?
    >>>> In todays monitors? In a mobile phone?
    >>>> An MP3 player?
    >>>> petrus bitbyter
    >>>
    >>> Still very common in amplified speaker sets
    >>> to use with computers or MP3 players.
    >>>
    >>> Cheap alarm clock radios still use pots.
    >>>
    >>> Google on "digital potentiometer".
    >>> I just got got "About 1,540,000 results".
    >>>
    >>> Most of the chips for that are just over a buck.
    >>>
    >>> Some of those are for rotary controls
    >>> but some others are for up/down buttons.
    >>>
    >>> Some of these chips appear to be made
    >>> to drop in place of variable resistors,
    >>> while some others seem to be integrated
    >>> into amplifiers.
    >>>
    >>> If you've already got a uC it can be
    >>> done without such a chip using two
    >>> input lines w/ buttons.
    >>>
    >>> Expect production levels of carbon
    >>> potentiometers to stabilize at a
    >>> very low level (specialty item)
    >>> because of fewer uses.
    >>>
    >>> One big plus is that lots of these
    >>> digital potentiometers work with
    >>> remote control input.

    >>
    >>Oh, there are still pots and there will be pots for quite some time. But
    >>when I have to ring a bell for every pot that was replaced by electronics
    >>I
    >>would be deaf long before I was done.
    >>
    >>petrus bitbyter
    >>

    >
    > I have a JVC radio + CD player in my office that has a motor driven
    > pot for the volume control when you use the remote ;-)
    >
    > ...Jim Thompson
    > --
    > | James E.Thompson | mens |
    > | Analog Innovations | et |
    > | Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
    > | San Tan Valley, AZ 85142 Skype: Contacts Only | |
    > | Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
    > | E-mail Icon at http://www.analog-innovations.com | 1962 |
    >
    > I love to cook with wine. Sometimes I even put it in the food.


    A good old analog pot cannot be beaten that easily. Not for serious audio
    that is ;)

    petrus bitbyter
     
    petrus bitbyter, Jan 8, 2014
    #13
  14. Guest

    A good old analog pot cannot be beaten that easily. Not for serious audio that is ;) petrus bitbyter

    And now legal in Colorado.
    Mark
     
    , Jan 8, 2014
    #14
  15. Guest

    On Wednesday, January 8, 2014 6:08:06 AM UTC-5, Greegor wrote:

    > Do any have setpoints that don't get lost
    >
    > each time the device powers down?


    yes
     
    , Jan 8, 2014
    #15
  16. Greegor Guest

    > A good old analog pot cannot be beaten that easily. Not for serious audio that is ;) petrus bitbyter

    mako > And now legal in Colorado.

    Didn't the state of Washington legalize pot also?
     
    Greegor, Jan 9, 2014
    #16
  17. Guest

    On Wed, 8 Jan 2014 03:08:06 -0800 (PST), Greegor <>
    wrote:

    >G > Google on "digital potentiometer".
    >G > I just got got "About 1,540,000 results".
    >
    >krw > "Digital potentiometer" is one of
    >krw > the devices one uses to avoid pots.
    >krw > ;-)
    >
    >I assume they don't all work exactly the same.
    >How many of them work like voltage dividers
    >and could be subbed in for older pots?
    >There are others that are not just voltage dividers, right?


    A digital potentiometer is just that. It has a resistor and a wiper;
    a three terminal device.

    >It occurs to me that some are probably designed
    >to work with rotary encoders rather than
    >simple up/down buttons, too.
    >
    >Through a uP they can function as either
    >linear or audio taper, I suppose.
    >
    >Do any have setpoints that don't get lost
    >each time the device powers down?


    Yes.
     
    , Jan 9, 2014
    #17
  18. Guest

    On Monday, January 6, 2014 9:39:25 PM UTC+2, wrote:
    > Hi all
    >
    >
    >
    > I once read an article on how potentiometers are replaced in todays electronic, by digatal ways....
    >
    >
    >
    > Does this ring a bell for anyone?


    I noticed the MCP4201 here, which recalls its position - that is what I need.
    For eg LM335 I need this, as the LM335 is not as exact as one might want - even the 1 degree version
    Or if I use an NTC.

    Then again, I could just test is and tell my uP that minimum is 0x04 and maximum is 0xe7 and it will calculate from there :)

    Does this change your opinions?
     
    , Jan 10, 2014
    #18
  19. Greegor Guest

    On Friday, January 10, 2014 1:04:08 AM UTC-6, wrote:
    > > Hi all

    >
    > > I once read an article on how potentiometers are replaced in todays electronic, by digatal ways....

    >
    > > Does this ring a bell for anyone?

    >
    > I noticed the MCP4201 here, which recalls its position - that is what I need.
    >
    > For eg LM335 I need this, as the LM335 is not as exact as one might want - even the 1 degree version
    >
    > Or if I use an NTC.


    > Then again, I could just test is and tell my uP that minimum is 0x04 and maximum is 0xe7 and it will calculate from there :)


    > Does this change your opinions?


    No.
     
    Greegor, Jan 10, 2014
    #19
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