Difference between revisions of "Octopus Tester"
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| + | |||
| + | == Features == | ||
| + | |||
| + | * Classic Octopus Tester | ||
| + | ** Based on [http://n5bl.org/pipermail/builders_n5bl.org/attachments/20150514/6b8107e1/attachment-0001.pdf design example (N5BL)] | ||
| + | ** [https://download.tek.com/manual/071011401.pdf Tektronix TR 210 Manual] | ||
| + | * Out of circuit component tester | ||
| + | ** Useful for matching parts like diodes | ||
| + | * In circuit component tester | ||
| + | ** Test 2 units and compare signatures on scope | ||
| + | * Use 6.3V "filament" transformer | ||
| + | ** 8.91V - Vpeak | ||
| + | ** 17.82V - Vpeak-peak | ||
| + | * 1mA, 10mA "scale" switch | ||
| + | ** Pot adjustments to set current (accommodate transformer and line voltage variances) | ||
| + | * 2 BNC jacks | ||
| + | * Plus, Minus Banana jacks | ||
| + | * AC powered | ||
| + | ** C13 jack with switch | ||
| + | ** 1A Fuse | ||
| + | |||
| + | === Scope Setup === | ||
| + | |||
| + | * Scope set to X-Y for voltage-vs-current measurement of part | ||
| + | ** Press button above time adjustment knob | ||
| + | ** Time Base XY | ||
| + | ** Look at scope pattern for device signature | ||
| + | ** Shows voltage/current phase relationships | ||
| + | ** 50 mS timebase | ||
| + | ** Connect to XY on scope (X=CH1, Y=CH2) | ||
| + | ** CH2 gets set to INVERT | ||
| + | |||
| + | == Schematic and Values == | ||
| + | |||
| + | [[file:OctopusTester_SCHEM.PNG]] | ||
| + | |||
| + | * Adjust RV1/RV2 for total resistance (fixed resistor plus pot) | ||
| + | ** 891 - 1 mA switch setting (RV2) | ||
| + | ** 8910 - 10mA switch setting (RV1) | ||
| + | |||
| + | == X-Y Patterns == | ||
| + | |||
| + | [[file:XY_Patterns.PNG]] | ||
| + | |||
| + | === Resistors === | ||
| + | |||
| + | * Resistor - slope line | ||
| + | ** Slope = resistance value | ||
| + | * 1 mA setting = 8901 ohms, 1:1 slope | ||
| + | * 10 mA setting = 890 ohms, 1:1 slope | ||
| + | |||
| + | [[file:OctopusTester_Resistor.png]] | ||
| + | |||
| + | === Capacitors === | ||
| + | |||
| + | * Oval shape | ||
| + | * 0.3uF, 60 Hz, 8841 ohms | ||
| + | * 3uF, 60 Hz, 884 ohms | ||
| + | * 1 uF cap, 1mA selection | ||
| + | |||
| + | [[file:OctopusTester_Cap_1uF-01.png]] | ||
| + | |||
| + | * 1 uF cap, 10mA selection | ||
| + | |||
| + | [[file:OctopusTester_Cap_1uF-02.png]] | ||
| + | |||
| + | === Zener === | ||
| + | |||
| + | * 3.9V Zener | ||
| + | * 1 mA switch setting | ||
| + | |||
| + | [[file:OctopusTester_Zener-01.png]] | ||
| + | |||
| + | * 10 mA switch setting | ||
| + | |||
| + | [[file:OctopusTester_Zener-02.png]] | ||
| + | |||
| + | == Cutouts on Bud Box CU-1945 == | ||
| + | |||
| + | [[FILE:OctopusTester_FRONT-BACK.PNG]] | ||
| + | |||
| + | == Videos == | ||
| + | |||
| + | <video type="youtube">Gwo3pEH7hUE</video> | ||
| + | |||
| + | <video type="youtube">EaipFdk67HE</video> | ||
| + | |||
| + | <video type="youtube">a1HgshaEbaw</video> | ||
| + | |||
| + | <video type="youtube">5ppFpU5K2WY</video> | ||
| + | |||
| + | <video type="youtube">R95f9gGFUGI</video> | ||
| + | |||
| + | == Parts == | ||
| + | |||
| + | * [https://www.mouser.com/ProductDetail/Triad-Magnetics/F-13X?qs=b1anAsPanWz99oSBmlGHww%3D%3D Typical transformer] | ||
| + | ** 1.38 in L, 2.38 in W, 1.38 in H | ||
| + | * Build into [https://www.mouser.com/ProductDetail/Bud-Industries/CU-1945?qs=YiMYZbOAr7eNf%252BiShkuUjg%3D%3D Bud Box CU-1945] | ||
| + | ** 6.21 in W x 3.76 in D x 2 in H | ||
| + | ** Comes with screws and rubber feet | ||
| + | * (1) Black, (1) Red binding posts | ||
| + | * (2) Chassis mount BNC connectors | ||
| + | * C13 AC jack with switch | ||
| + | * [https://www.ebay.com/itm/273507122080 5x20 Fuse holder] | ||
| + | * 1A fuse (5x20) | ||
Latest revision as of 20:50, 5 September 2021
Contents
Features
- Classic Octopus Tester
- Out of circuit component tester
- Useful for matching parts like diodes
- In circuit component tester
- Test 2 units and compare signatures on scope
- Use 6.3V "filament" transformer
- 8.91V - Vpeak
- 17.82V - Vpeak-peak
- 1mA, 10mA "scale" switch
- Pot adjustments to set current (accommodate transformer and line voltage variances)
- 2 BNC jacks
- Plus, Minus Banana jacks
- AC powered
- C13 jack with switch
- 1A Fuse
Scope Setup
- Scope set to X-Y for voltage-vs-current measurement of part
- Press button above time adjustment knob
- Time Base XY
- Look at scope pattern for device signature
- Shows voltage/current phase relationships
- 50 mS timebase
- Connect to XY on scope (X=CH1, Y=CH2)
- CH2 gets set to INVERT
Schematic and Values
- Adjust RV1/RV2 for total resistance (fixed resistor plus pot)
- 891 - 1 mA switch setting (RV2)
- 8910 - 10mA switch setting (RV1)
X-Y Patterns
Resistors
- Resistor - slope line
- Slope = resistance value
- 1 mA setting = 8901 ohms, 1:1 slope
- 10 mA setting = 890 ohms, 1:1 slope
Capacitors
- Oval shape
- 0.3uF, 60 Hz, 8841 ohms
- 3uF, 60 Hz, 884 ohms
- 1 uF cap, 1mA selection
- 1 uF cap, 10mA selection
Zener
- 3.9V Zener
- 1 mA switch setting
- 10 mA switch setting
Cutouts on Bud Box CU-1945
Videos
Parts
- Typical transformer
- 1.38 in L, 2.38 in W, 1.38 in H
- Build into Bud Box CU-1945
- 6.21 in W x 3.76 in D x 2 in H
- Comes with screws and rubber feet
- (1) Black, (1) Red binding posts
- (2) Chassis mount BNC connectors
- C13 AC jack with switch
- 5x20 Fuse holder
- 1A fuse (5x20)
