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notes to self

a document of a plodding mind

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Tag: electronics

Posted on 2022-11-092024-06-19
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Running Autodesk EAGLE 9.6.2 on Xubuntu 22.04

So, I did a fresh install of Xubuntu 22.04 on a Dell Latitude 7390 with an Intel UHD 620 display adapter. I had some issues with the machine locking upContinue readingRunning Autodesk EAGLE 9.6.2 on Xubuntu 22.04

Posted on 2021-08-112024-06-19
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Portable 40m Direct-conversion Transceiver Design

Having finished my master’s degree over a year ago now, I’ve started to see my thesis show up on various academic web sites. I decided I should probably link itContinue readingPortable 40m Direct-conversion Transceiver Design

Posted on 2014-09-162026-03-16
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DOD FX55B SupraDistortion – BigBuff Mod

Here’s another in a line now of DOD pedal mods. For this FX55B, I decided to go for more of a BigMuff sound. Playing around with this pedal initially, IContinue readingDOD FX55B SupraDistortion – BigBuff Mod

Posted on 2014-09-122026-03-16
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Class AB amplifier test

this was an attempt at designing a simple transformer-less class AB amplifier using two BJT power transistors. i setup the USB fan to protect against thermal runaway and cool offContinue readingClass AB amplifier test

Posted on 2014-08-312026-03-16
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initial PCB milling test…

here’s an initial PCB test for the Triode tube overdrive on the SMBA site. this picture is pre-sanding. it was milled using LinuxCNC on a Xubuntu 14.04 LTS running theContinue readinginitial PCB milling test…

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work in progress

abram Posted on 2012-12-03

early stages of a reverb effect pedal for guitar.

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SCHEMATIC: TL082 9V Active EQ…

abram Posted on 2012-03-072012-03-07

an experimental EQ circuit based of the TL082 datasheet. i modified it to use a 9V battery, but could probably still use some work in terms of efficiency… as mostContinue readingSCHEMATIC: TL082 9V Active EQ…

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Bending notes with PT2399…

abram Posted on 2010-11-282010-11-28

i’ve been experimenting with this PT2399 chip and using various schematics to create a digital delay circuit. the delay time seems to be directly attached to the sample rate sinceContinue readingBending notes with PT2399…

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LightBox prototype

abram Posted on 2010-11-032010-11-03

here’s a small battery-powered guitar amp that i’ve constructed from reused parts. the housing is a busted computer power supply (some of which is in the No. 5) as well.Continue readingLightBox prototype

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