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| − | [[file:P1798-crop-720px.jpg]]
| + | == Design == |
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| − | [[file:P1070804-crop-720px.jpg]]
| + | * [[Mini360 Buck Converter]] |
| − | | |
| − | == Features ==
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| − | | |
| − | * Classic Octopus Tester
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| − | ** Based on [http://n5bl.org/pipermail/builders_n5bl.org/attachments/20150514/6b8107e1/attachment-0001.pdf design example (N5BL)]
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| − | * Scope set to X-Y for voltage-vs-current measurement of part
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| − | ** Look at scope pattern for device signature
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| − | ** Shows voltage/current phase relationships
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| − | * Out of circuit component tester
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| − | ** Useful for matching parts like diodes
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| − | * In circuit component tester
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| − | ** Test 2 units and compare signatures on scope
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| − | * Use 6.3V "filament" transformer
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| − | ** 8.91V - Vpeak
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| − | ** 17.82V - Vpeak-peak
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| − | ** [https://www.mouser.com/ProductDetail/Triad-Magnetics/F-13X?qs=b1anAsPanWz99oSBmlGHww%3D%3D Typical transformer]
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| − | *** 1.38 in L, 2.38 in W, 1.38 in H
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| − | * 1mA, 10mA "scale" switch
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| − | ** Pot adjustments to set current (accommodate transformer and line voltage variances)
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| − | * 2 BNC jacks
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| − | ** Timebase = XY
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| − | ** Connect to XY on scope (X=CH1, Y=CH2)
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| − | ** CH2 gets set to INVERT
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| − | * Plus, Minus Banana jacks
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| − | * AC powered
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| − | ** C13 jack with switch
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| − | ** 1A Fuse
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| − | * Build into [https://www.mouser.com/ProductDetail/Bud-Industries/CU-1945?qs=YiMYZbOAr7eNf%252BiShkuUjg%3D%3D Bud Box CU-1945]
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| − | ** 6.21 in W x 3.76 in D x 2 in H
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| − | ** Comes with screws and rubber feet
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| − | | |
| − | == X-Y Patterns ==
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| − | | |
| − | [[file:XY_Patterns.PNG]]
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| − | | |
| − | === Resistors ===
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| − | | |
| − | * Resistor - slope line
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| − | ** Slope = resistance value
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| − | * 1 mA setting = 8901 ohms, 1:1 slope
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| − | * 10 mA setting = 890 ohms, 1:1 slope
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| − | | |
| − | [[file:OctopusTester_Resistor.png]]
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| − | | |
| − | === Capacitors ===
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| − | | |
| − | * Oval shape
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| − | * 0.3uF, 60 Hz, 8841 ohms
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| − | * 3uF, 60 Hz, 884 ohms
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| − | * 1 uF cap, 1mA selection
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| − | | |
| − | [[file:OctopusTester_Cap_1uF-01.png]]
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| − | | |
| − | * 1 uF cap, 10mA selection
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| − | | |
| − | [[file:OctopusTester_Cap_1uF-02.png]]
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| − | | |
| − | === Zener ===
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| − | | |
| − | * 3.9V Zener
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| − | * 1 mA switch setting
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| − | | |
| − | [[file:OctopusTester_Zener-01.png]]
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| − | | |
| − | * 10 mA switch setting
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| − | | |
| − | [[file:OctopusTester_Zener-02.png]]
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| − | | |
| − | == Schematics ==
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| − | | |
| − | [[file:OctopusTester_SCHEM.PNG]]
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| − | | |
| − | * Adjust RV1/RV2 for total resistance (fixed resistor plus pot)
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| − | ** 891 - 1 mA switch setting (RV2)
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| − | ** 8910 - 10mA switch setting (RV1)
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| − | | |
| − | == Cutouts on Bud Box CU-1945 ==
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| − | | |
| − | [[FILE:OctopusTester_FRONT-BACK.PNG]] | |
| − | | |
| − | == Videos ==
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| − | | |
| − | <video type="youtube">Gwo3pEH7hUE</video>
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| − | | |
| − | <video type="youtube">EaipFdk67HE</video>
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| − | | |
| − | <video type="youtube">a1HgshaEbaw</video>
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| − | | |
| − | <video type="youtube">5ppFpU5K2WY</video>
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| − | | |
| − | <video type="youtube">R95f9gGFUGI</video>
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