Adapter for electron diffraction tube D (U19171) for connection of the heater voltage via safety experiment leads. Includes internal protective circuitry to protect the heating filament against excess voltage. Dimensions match the three-pole connector for the tube.
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![Tube Holder D -
for the experimental setup of tubes of series D, 1008507 [U191001], Accessories – Type D](/thumblibrary/U191001/U191001_01_140_140_Tube-Holder-D-for-the-experimental-setup-of-tubes-of-series-D.jpg)
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(230 V, 50/60 Hz), 1003312 [U33020-230], Power Supplies](/thumblibrary/U33020-230/U33020-230_01_140_140_DC-Power-Supply-20-V-5-A-230-V-5060-Hz.jpg)
![Deflection Tube D, 1000651 [U19155], Electron Tubes – Type D](/thumblibrary/U19155/U19155_01_140_140_Deflection-Tube-D.jpg)
![Barrel Foot, 1 kg, 1002834 [U13265], Bases](/thumblibrary/U13265/U13265_01_140_140_Barrel-Foot-1-kg.jpg)
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![Universal Clamp, 1002830 [U13255], Clamps](/thumblibrary/U13255/U13255_01_140_140_Universal-Clamp.jpg)
![Helmholtz Coils D -
for experiments with electron tubes of the D series, 1000644 [U191051], Accessories – Type D](/thumblibrary/U191051/U191051_01_140_140_Helmholtz-Coils-D-for-experiments-with-electron-tubes-of-the-D-series.jpg)
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![Digital Counter (230 V, 50/60 Hz), 1001033 [U8533341-230], Digital Counters](/thumblibrary/U8533341-230/U8533341-230_01_140_140_Digital-Counter-230-V-5060-Hz.jpg)
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