DE554450C - Device for converting mechanically recorded vibrations into electrical vibrations - Google Patents
Device for converting mechanically recorded vibrations into electrical vibrationsInfo
- Publication number
- DE554450C DE554450C DE1930554450D DE554450DD DE554450C DE 554450 C DE554450 C DE 554450C DE 1930554450 D DE1930554450 D DE 1930554450D DE 554450D D DE554450D D DE 554450DD DE 554450 C DE554450 C DE 554450C
- Authority
- DE
- Germany
- Prior art keywords
- vibrations
- electrical
- mechanically recorded
- converting
- copper oxide
- 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
Links
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 7
- 239000005751 Copper oxide Substances 0.000 claims description 7
- 229910000431 copper oxide Inorganic materials 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R21/00—Variable-resistance transducers
- H04R21/04—Gramophone pick-ups using a stylus; Recorders using a stylus
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Description
Die Erfindung betrifft eine VorrichtungThe invention relates to a device
zum Umsetzen mechanisch aufgezeichneter Schwingungen in elektrische Schwingungen mittels eines veränderlichen Kontaktwider-Standes. for converting mechanically recorded vibrations into electrical vibrations by means of a variable contact resistance.
Erfindungsgemäß bestehen eine oder mehrere der zusammenwirkenden Elektroden oder ihre Oberflächenkontaktzone oder -zonen aus Kupferoxydul. Die neue Vorrichtung unterscheidet sich erheblich von dem vorher verwendeten Kohlenmikrophon. Kohle hat bekanntlich einen geringen Berührungswiderstand und inneren Widerstand, während die neue Vorrichtung mit Kupferoxydul einen »5 Widerstand in einer Größenordnung vom Mehrfachen dessen der Kohletype hat, wodurch die Verwendung hoher Spannungsladungen bei sehr geringem Stromlauf ermöglicht wird. Die Kupferoxydulschicht hält unter den verwendeten Spannungen viel länger aus und zeigt eine durchaus gleichmäßigere Leistungsfähigkeit als die bisher verwendeten Elektroden.According to the invention, there are one or more of the interacting electrodes or their surface contact zone or zones made of copper oxide. The new device makes a difference significantly different from the previously used carbon microphone. As is well known, coal has a low contact resistance and internal resistance, while the new device with copper oxide »5 Resistance of the order of several times that of the carbon type, which makes the use of high voltage charges is made possible with a very low current flow. The copper oxide layer holds up well under the voltages used longer and shows a more consistent performance than before electrodes used.
In der Zeichnung sind zwei Ausführungsbeispiele schematisch dargestellt.Two exemplary embodiments are shown schematically in the drawing.
Fig. ι zeigt eine Schalldose in einem elektrischen Stromkreise mit der Druck-Zug-Anordnung oder zweiphasigen Anordnung.Fig. Ι shows a sound box in an electrical Circuits with the push-pull arrangement or two-phase arrangement.
Fig. 2 zeigt die Vorrichtung in einer Einphasenanordnung. Fig. 2 shows the device in a single phase arrangement.
Eine Platte oder ein Grundkörper 1 aus Isoliermasse trägt Kupferplatten 2, deren gegenüberliegende Flächen mit Kupferoxydulschichten 3 bekleidet sind, in Oberflächenkontakt mit der Elektrode 4, die aus einem Überzuge aus entflocktem Graphit auf einem Gummiblock besteht, der am Schallstift 6 durch das Band S angebracht ist. Der Stift 6 ist an der Platte 7 drehbar gelagert, die an der Platte 1 montiert ist. Gummiplatten 8 sind zwischen die Platte und den Stift eingelegt, um den Stift mit Reibung zu halten. Durch den Beschlag 9 kann die Vorrichtung an einem Tragarme eines Phonographen oder sonstigen Wiedergabeapparates angebracht +5 werden. In dem Druck-Zug-Stromkreise liegt eine Batterie 10 zur Lieferung eines Potentials an die Elektroden 3 und 4. Im ausgehenden Stromkreise liegt ein üblicher Zweiphasentransformator 11. Fig. 2 zeigt einen Einphasentransformator.A plate or a base body 1 made of insulating compound carries copper plates 2, their opposite surfaces are clad with copper oxide layers 3, in surface contact with the electrode 4, which consists of a coating of deflocculated graphite on a There is a rubber block which is attached to the sound pen 6 by the band S. The pen 6 is rotatably mounted on the plate 7 which is mounted on the plate 1. Rubber plates 8 are sandwiched between the plate and the pin to hold the pin with friction. Through the fitting 9, the device can be attached to a support arm of a phonograph or other playback equipment +5 are attached. In the push-pull circuits lies a battery 10 for supplying a potential to the electrodes 3 and 4. Im outgoing Circuits is a common two-phase transformer 11. Fig. 2 shows a single phase transformer.
Bei beiden Ausführungen ist der Gesamtwiderstand der Vorrichtung ursprünglich der kombinierte Kontaktwiderstand und innere Kristallwiderstand der Kupferoxydelektrode. Bei vergrößertem Druck auf die Kupferoxydulelektrode findet wegen des negativen Kontaktwiderstandskoeffizienten dieses Materials bei Druck eine Verstärkung des Stromlaufs durch das Oxyd statt. >6°In both embodiments, the total resistance of the device is originally the combined contact resistance and internal crystal resistance of the copper oxide electrode. If the pressure on the copper oxide electrode is increased, the current flow through the oxide is intensified because of the negative contact resistance coefficient of this material. > 6 °
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US370448A US1757547A (en) | 1929-06-12 | 1929-06-12 | Phonograph pick-up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE554450C true DE554450C (en) | 1932-07-08 |
Family
ID=23459707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1930554450D Expired DE554450C (en) | 1929-06-12 | 1930-06-13 | Device for converting mechanically recorded vibrations into electrical vibrations |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1757547A (en) |
| DE (1) | DE554450C (en) |
| FR (1) | FR696839A (en) |
| GB (1) | GB342635A (en) |
| NL (1) | NL29996C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE479998A (en) * | 1944-11-28 | |||
| US2511664A (en) * | 1944-11-28 | 1950-06-13 | Gen Electric | Phonograph pickup |
| US2472770A (en) * | 1945-11-20 | 1949-06-07 | Sylvania Electric Prod | Resistance apparatus for converting mechanical movement into electrical pulses |
| US2482467A (en) * | 1946-05-10 | 1949-09-20 | Westinghouse Electric Corp | Phonograph pickup |
| US2590439A (en) * | 1948-05-12 | 1952-03-25 | Star Electronics Inc | Push-pull resistance type phonograph pickup |
| US2680786A (en) * | 1950-05-24 | 1954-06-08 | Irving Seidman | Electric phonograph |
| US2700089A (en) * | 1950-11-28 | 1955-01-18 | Pfanstiehl Chemical Corp | Strain-sensitive transducer |
-
1929
- 1929-06-12 US US370448A patent/US1757547A/en not_active Expired - Lifetime
-
1930
- 1930-06-03 NL NL51959A patent/NL29996C/xx active
- 1930-06-06 GB GB17638/30A patent/GB342635A/en not_active Expired
- 1930-06-07 FR FR696839D patent/FR696839A/en not_active Expired
- 1930-06-13 DE DE1930554450D patent/DE554450C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL29996C (en) | 1933-06-15 |
| US1757547A (en) | 1930-05-06 |
| GB342635A (en) | 1931-02-05 |
| FR696839A (en) | 1931-01-07 |
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