US1814399A - Indicator - Google Patents
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- Publication number
- US1814399A US1814399A US214098A US21409827A US1814399A US 1814399 A US1814399 A US 1814399A US 214098 A US214098 A US 214098A US 21409827 A US21409827 A US 21409827A US 1814399 A US1814399 A US 1814399A
- Authority
- US
- United States
- Prior art keywords
- crystal
- tube
- indicator
- potential
- luminous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000013078 crystal Substances 0.000 description 17
- 239000010453 quartz Substances 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 101150030891 MRAS gene Proteins 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
Definitions
- This invention relates to a device for indicating alternating potentials.
- This progress is attained in that the crystal influenced by the alternating current to be observed, as soon as it happens i to be in resonance with the frequency to be influenced, is electrically connected with a luminous orglow-discharge tube located outside the crystal in such a way that the energy of the oscillating crystal fexcites said luminous tube at the instant when resonance arises.
- This excitation may be further in-. tensified by applyingan auxiliary (biasing) 5 potential across the terminals of-the luminous tube wherebythe breakdown (striking) potential of the tube, is lowered.
- Fig. 1 shows one form of our invention and I Fig. 2 shows'a modified form of our'invention utilizing an exciting battery for a glow discharge tube.
- Fig. 1 Q is a piezo-electric body, say, a quartz crystal, and L a coil which serves for establishing a coupling with the transmitter to be checked.
- a glow-discharge or a helium tube 9 G In series with the crystal is arranged a glow-discharge or a helium tube 9 G.” By the excitation by the transmitter, the 1 quartz crystal will be caused to oscillate,-
- Fig. 2 we have shown an embodiment of our-invention wherein the glow tube G is kept in a critical condition by means of battery H.
- g 1 In combination, a glow discharge .device, a source of potential forkeeping said device in a critical condition, a piezo electric crystal and an inductor in series with said glow discharge device, and means for supplying an alternatingpotential to said inductor.
- a piezo electric crystal in combination, a piezo electric crystal, a glow discharge device and an impedance in series; a source of potential shunted across said gloiw discharge device and means for supplying an alternating potential to said impedance whereby-when said potential corresponds in frequency to that of the crystal,
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
y ,1931. A. MEISSNER ET AL 1,814,399
INDICATOR Filed Aug. 19. 1927 INVENTOR ALEXANDER MEISSNER BY 5}) VON BRONK /l a Pdbwoo TORNEY Patented July: 14, 1931 I UNITED s'mras GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE M. B. H. HALLESCHES, OF BERLIN,
PATENT OFFICE ALEXANDER MEISSNER AND OTTO VON BRONK, BERLIN, GERMANY, ASSIGNOBS TO GERMANY, A CORPORATION OF GERMANY INDICATOR 'Application filed August 19, 1927, Serial No. 214,098, and in .Germany August 21, 1926.
This invention relates to a device for indicating alternating potentials.
Arrangements for the indication of alternating potentials, especially high frequency 5 oscillations are known in which a quartz crystal is confined within anexhausted vessel filled with gas so that the potentials set up at the quartz body cause the tube to luminesce. This device involves the great drawback that, on the one hand, it gives rise to very small luminous energy, inasmch as the'potentials across the quartz crystal in the low vacuum are very small. On the other hand, difliculties arise insofar as it is necessary to reinove the crystal from the vacuous space and to remount and reseal ittherein after grinding away portions thereof whenever it is a desired to change the wave of the-crystal, in other words, whenever the indicator is to be adapted so as to respond to another, wavelength. The present invention avoids these drawbacks and thus discloses essential technical progress. This progress is attained in that the crystal influenced by the alternating current to be observed, as soon as it happens i to be in resonance with the frequency to be influenced, is electrically connected with a luminous orglow-discharge tube located outside the crystal in such a way that the energy of the oscillating crystal fexcites said luminous tube at the instant when resonance arises. This excitation may be further in-. tensified by applyingan auxiliary (biasing) 5 potential across the terminals of-the luminous tube wherebythe breakdown (striking) potential of the tube, is lowered.
Embodiments ofthe basic idea of our invention are shown by way of example in then 0 accompanying drawmgs wherein Fig. 1 shows one form of our invention and I Fig. 2 shows'a modified form of our'invention utilizing an exciting battery for a glow discharge tube. In Fig. 1 Q is a piezo-electric body, say, a quartz crystal, and L a coil which serves for establishing a coupling with the transmitter to be checked. In series with the crystal is arranged a glow-discharge or a helium tube 9 G." By the excitation by the transmitter, the 1 quartz crystal will be caused to oscillate,-
energy being given off by the crystal at the instant it starts to oscillate, to the luminous system coupled therewith, the latter being caused to flash up at the instant the quartz crystal happens to be in resonance.
In Fig. 2 we have shown an embodiment of our-invention wherein the glow tube G is kept in a critical condition by means of battery H.
Of course, care must rangement so that the flashing up of the luminous tube will not be caused by the direct energy of the oscillation to be controlled, but only bythe energy of the quartz crystal itself The coupling between the be taken in this arquartz crystal and the luminous tube may be inductive, capacitive oi galvanic.
We claim as our invention: g 1. In combination, a glow discharge .device, a source of potential forkeeping said device in a critical condition, a piezo electric crystal and an inductor in series with said glow discharge device, and means for supplying an alternatingpotential to said inductor.
'2'. In combination, a piezo electric crystal, a glow discharge device and an impedance in series; a source of potential shunted across said gloiw discharge device and means for supplying an alternating potential to said impedance whereby-when said potential corresponds in frequency to that of the crystal,
.a discharge occurs across said glow discharge device. J
' ALEXANDER MEISSNER.
OTTO VON BRONK.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1814399X | 1926-08-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
US1814399A true US1814399A (en) | 1931-07-14 |
Family
ID=7744431
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US214098A Expired - Lifetime US1814399A (en) | 1926-08-21 | 1927-08-19 | Indicator |
Country Status (1)
Country | Link |
---|---|
US (1) | US1814399A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2796584A (en) * | 1955-03-21 | 1957-06-18 | Hurvitz Hyman | Two dimensional electroluminescent display |
US2810883A (en) * | 1955-04-18 | 1957-10-22 | Raymond M Wilmotte Inc | Frequency sensitive visual indicator |
US2886777A (en) * | 1955-04-27 | 1959-05-12 | Hurvitz Hyman | Amplitude displays |
US2994036A (en) * | 1955-04-29 | 1961-07-25 | Hurvitz Hyman | Frequency scanning spectrum analyzers |
US3235799A (en) * | 1954-12-27 | 1966-02-15 | Hurvitz Hyman | Electroluminescent frequency sensitive visual indicator |
US3513392A (en) * | 1967-11-01 | 1970-05-19 | Zenith Radio Corp | High voltage probe with positive contact indicator |
-
1927
- 1927-08-19 US US214098A patent/US1814399A/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3235799A (en) * | 1954-12-27 | 1966-02-15 | Hurvitz Hyman | Electroluminescent frequency sensitive visual indicator |
US2796584A (en) * | 1955-03-21 | 1957-06-18 | Hurvitz Hyman | Two dimensional electroluminescent display |
US2810883A (en) * | 1955-04-18 | 1957-10-22 | Raymond M Wilmotte Inc | Frequency sensitive visual indicator |
US2886777A (en) * | 1955-04-27 | 1959-05-12 | Hurvitz Hyman | Amplitude displays |
US2994036A (en) * | 1955-04-29 | 1961-07-25 | Hurvitz Hyman | Frequency scanning spectrum analyzers |
US3513392A (en) * | 1967-11-01 | 1970-05-19 | Zenith Radio Corp | High voltage probe with positive contact indicator |
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