This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Saturday, February 6, 2016

Negative Voltage Inverter

Here's a super quicky for your Saturday. Got a request over on Facebook for a simple voltage inverter using the 1044/7660 chipset. Great for when you need to power a positive ground effect like PNP Fuzz Faces and Tone Benders but still want to daisy chain it with negative ground effects or not use a battery.

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13 comments:

  1. UnknownFebruary 6, 2016 at 12:57 PM

    very nice

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  2. HadrienFebruary 6, 2016 at 2:10 PM

    Amazing !!! Thanks :) :)

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  3. estivenOctober 26, 2017 at 11:20 PM

    LT1054 works??

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    Replies
    1. Effects LayoutsOctober 30, 2017 at 9:31 AM

      Cut the trace between pins 1 and 8 if your using a 1054. Otherwise I think that's all the modification you'd need to do. Double check the datasheets though.

      Delete
  4. sonoMagroApril 8, 2018 at 3:47 AM

    My voltage inverter doesn't work. I can't understand what is wrong. There is no voltage on output

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  5. RobincheOctober 14, 2020 at 2:28 PM

    Hi there ! does it works with +12v in the input for +/-12v (not AC) effects ?
    Thanks ! :)

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    Replies
    1. Effects LayoutsOctober 14, 2020 at 2:35 PM

      You'll need to check the datasheet of the chip you're using, but I think the max input voltage of both the 1044 and 7660 is less than 12v. I think a 1054 has a higher rating though. And if you use the 1054, you'll need to cut the trace between pin 1 and 8 of the IC in the layout.

      Delete
    2. RobincheOctober 14, 2020 at 3:20 PM

      YEEEE thanks for the fast answer !! definitely give it a try soon

      Delete
  6. o sarracinoOctober 16, 2020 at 5:57 PM

    Hi there! First of all I'd like to sincerely thank you for the work you're doin here, I think that's incredibly useful and inspiring sooo... thank you brother. Actually, I'm also writing to tell you I just finished building this device and it's giving me -9.47v at the output so I guess you can tag it as verified, unless there are other requirements.
    I followed your layout, only difference is that I didn't connect pin1 to pin8 according to 7660's datasheet, but I also breadboarded it following your version and it works as well.
    That said, thank you again for everything, ciao from Italee :)))

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  7. NickNovember 9, 2020 at 5:09 PM

    This comment has been removed by the author.

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  8. NOCJune 29, 2022 at 12:44 PM

    Would this work with an 18v power supply?

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    Replies
    1. Effects LayoutsJune 30, 2022 at 1:06 PM

      The chip would have to be rated for that input voltage. The 7660's max is 12v I think. I think the TLC1144 can handle 18 though.

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    2. NOCJune 30, 2022 at 4:47 PM

      Awesome! Looks like the LTC1144 rating is 2v-18v. Building a Deluxe Memory Man and it requires 18v PS AAAAAAnd a positive ground. Wish me luck.

      Delete

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