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  • headphones
  • help
  • lm386
Related

help with lm386

e14 Contributor
e14 Contributor over 13 years ago

how could i turn off lm386 when i plugged headphones and lm386 on when headphones not plugged . im using this circuit

http://www.hobby-hour.com/electronics/lm386-20.gif

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  • i_droppa
    0 i_droppa over 13 years ago

    Hi,

    the easiest way that you use a Jack connector with internal switch like this.

    image

    But iam not sure where is the Jack connector in your circuit. On the input (Vin) or on the output (before the speaker)?

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  • e14 Contributor
    0 e14 Contributor over 13 years ago in reply to i_droppa

    Input is Vin, Battery is Vs, where i could find jack connector like that?

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  • i_droppa
    0 i_droppa over 13 years ago in reply to e14 Contributor

    Hi,

    You can find it for exaple in Farnell http://hu.farnell.com/lumberg/1503-09/socket-3-5mm-jack-r-a-stereo/dp/1243244

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  • benheck
    0 benheck over 13 years ago

    This is a great amplifier too:

     

    http://www.newark.com/texas-instruments/tpa6021a4n/ic-audio-power-amp-class-ab-2w/dp/43K4150?in_merch=Popular%20Products

     

    Schematic shows you exactly how to wire a headphone jack switch into it.

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  • e14 Contributor
    0 e14 Contributor over 13 years ago

    What if i want to use this chip for a guitar amp can it deliver a good cuality sound

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