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  1. ofb

    not an altoids tin..

    but another meta42 in the world. many thanks to tangent et al, the forum, the web, etc etc, for making a first electronics project easy. this one is populated with stock digikey and tangent parts. i simply selected what was better for an ac version, or better any time it was only a...
  2. ofb

    rectifier bridge basics

    okay, this is a classic case of the eraser wearing out before the pencil, so i'd best ask for help. i'm looking at the circuit diagram for the SDS psu and its pcb. http://headwize2.powerpill.org/proje...stokes_prj.htm i'm trying to understand how the circuit relates to the legs of the...
  3. ofb

    101 level parts question

    i'm muddling my way through parts for a meta42. doing fairly well for the lost, thanks to headwize/head-fi/tangentsoft/et al, but i've run into a stumbling block with parts selection where the needed caps are obsolete, like C1 through C8 for the SDS psu. i'm fairly sure P4125-ND is the part...
  4. ofb

    fool question on switches

    i figure i'm missing a basic truth and hope someone will enlighten me. i want to make a simple switchbox that requires a single throw and six poles. i figured such a switch would likely be rotary for hardware simplicity, but since digikey only carries up to 4p, i now suspect i'm just asking the...
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