X-Git-Url: http://www2.svjatoslav.eu/gitweb/?a=blobdiff_plain;f=power%2Fadjustable%20resistor%2Findex.html;fp=power%2Fadjustable%20resistor%2Findex.html;h=0000000000000000000000000000000000000000;hb=19af345819ef415d6685de55eb218367baa47b33;hp=2ab6a34820e1a747ec0f531644a370f9390b0b6f;hpb=365f953bb4a379fb74f7ec49244484f75362c684;p=physical.git diff --git a/power/adjustable resistor/index.html b/power/adjustable resistor/index.html deleted file mode 100644 index 2ab6a34..0000000 --- a/power/adjustable resistor/index.html +++ /dev/null @@ -1,371 +0,0 @@ - - - -Adjustable resistor / indicator - - - - - - - - - - - - - -
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Adjustable resistor / indicator

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1 General

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2 Project description

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-I needed a way to experimentally find resistance that works best in -certain circuits. Usual potentiometers could not handle required power -dissipation and were not precise enough. -

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-Solution is to build adjustable resistor: -

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make.png -

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-Logically there is series of resistors that increase in resistance in -the power of 2: 0.5, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512. Each -resistor can be enabled or disabled by a switch. This makes entire -range of 0 – 1023.5 ohms available with the 0.5 ohms precision. -

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-Schematic: -schematic.png -

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-Here is front panel for switches: -front%20panel.png -

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-Download: -

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-Sometimes I would like to use lightbulbs with various parameters as -test load/indicator. Current device has 4 of them included. -

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-Here is front panel for light bulbs: -indicator%20panel.png -

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-Download: -

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-After assembly using prototype PCB: -make,%202.png -

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-Following body is used as a case and PCB support: -body.png -

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-Download: -

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-Result: -make,%203.png -

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-Cover on the back: -back%20cover.png -

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-Download: STL file -

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-Button covers: -button.png -

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-Download: -

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