DE746040C - Playback head for magnetic sound machines - Google Patents

Playback head for magnetic sound machines

Info

Publication number
DE746040C
DE746040C DEL105832D DEL0105832D DE746040C DE 746040 C DE746040 C DE 746040C DE L105832 D DEL105832 D DE L105832D DE L0105832 D DEL0105832 D DE L0105832D DE 746040 C DE746040 C DE 746040C
Authority
DE
Germany
Prior art keywords
playback head
magnetic sound
machines
sound machines
magnetic
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
Application number
DEL105832D
Other languages
German (de)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to DEL105832D priority Critical patent/DE746040C/en
Application granted granted Critical
Publication of DE746040C publication Critical patent/DE746040C/en
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Ceramics (AREA)

Description

Widergabekopf für Magnettonmaschinen Vin beim Magnettonverfahren ein ntüglichst breites Freduenzhand zu übertragen, Hild verschiedene Faktoren zu berficksichtigen. Abgesehen vorn Material des Tonträgers und :einer Geschwindigkeit, sind dies die Spaltbreite, Kerndicke und Kernmaterial sowie die Dimensionierung der :pulen. 1_'1n eine iniiglichst große 1)ynamilc zu erhalten. mini inan versuchen. den "bonträger iniiglichst voll auszusteuern. Dies Bestreben ist jedoch durch dasAuftreten vonnichtlinearrn\"erzerrungen begrenzt.Playback head for magnetic sound machines Vin in the magnetic sound process It was necessary to give Hild a broad hand, to take various factors into account. Apart from the material of the sound carrier and: a speed, these are the Gap width, core thickness and core material as well as the dimensioning of the: pulen. 1_'1n to obtain a very large 1) family. try mini inan. the "receipt carrier to be controlled to the fullest possible extent. However, this tendency is distorted by the occurrence of non-linear limited.

Wird ein sinusföriniger Ton von einem S S prechkopf aufgezeichnet und von einem zweipoligen Wiedergabekopf allgetastet. so treten hei niedrigen Frequenzen nichtlineare Verzerrungen auf. Diese verschwinden jedoch. wetni die Wiedergabe init einem ein-Inrligen Sprechkopf vorgenommen wird. Lhngekehrt liegen die ArhältnissebeideW'iedergalie liiilierer Frequenzen. Hier erweist sich der zweipolige\Viedergahekopf als;trünsdger. ])er ini zweipoligen Wiedergabekopf entstehende Flufi .hängt von der auf dem Tontriiger allgetasteten Potentialdifferenz ab. Gei gleichbleibender Spaltbreite wird diese I'oteaidaldittereiiz uni so größer. je kleiner die Wellenlänge, also der Quotient von Geschwindigkeit des Tonträgers und der Frequenz, ist, sie steigt also mit zunehmender Frequenz an.If a sinusoidal tone is recorded by a sound head and all-sampled by a bipolar playback head. so occur at low frequencies nonlinear distortions. However, these disappear. wetni playback init a single headset. Conversely, the conditions are both similar lilier frequencies. Here the bipolar \ Viedergahekopf proves to be more trünsdger. ]) The flux that arises in the two-pole playback head depends on the flux on the soundtrack all sampled potential difference. If the gap width remains the same, this will be I'oteaidaldittereiiz uni so bigger. the smaller the wavelength, i.e. the quotient of the speed of the sound carrier and the frequency, so it increases with increasing Frequency.

Ilea der einpoligen Abtastung chirchsetzen die Kraftlinien einer niedrigeren Frequenz, al.n einer l;rößeren Wellenlänge den Kern mehr, als die Kraftlinien 1>e1 höheren Frequenzen; die rin einpoligen Widergabekopf induzierte Spanntang sinkt also finit Zunahme der Frequenz. Iss ist bekannt, Meide Systeme hintereinander anzuwenden, uni so die Frednenzkurvcn zu .uperponieren. Hierbei tritt jedoch der Nachteil auf. ;SO div i>eSKi _\I-tastllttiilcte räumlich getrennt und #-"iilit zeitlich gegeneinander Iss ist ferner bekannt. (It'il :tiii dun Magnetpolen sitzenden \\'icklungcn %-iT:rhirdcile `f'lli@11111@@7alllt'It 711 feilen. I:rlül'liiii@ -gemäß kann man die Urteik# hohler Svstei.i,-ohne ihre \achtcile dadurch @c#rt#iili@u. lall bei einem zweipoligen \\ mit auf entgegengesetltt'ii St#iton des 1\'It#@lt#I'Iilgebendeil \lagnm"gmmmtr:igersaiMdwarhu#it Magnetkernen mir ein Keni eitle \Vic l;lmitr erhält, der andere dare;gen unile@@irl:t#lt bleibt. Der der Sprechspule gegenüllerstellenüu lern bildet in diesem Fall einen t-;t»,#"(#iil)()l, der die Kraftliniert bündelt und die wirksame Hiiiflußzone des Sprechkernes verringert.In the case of unipolar scanning, the lines of force of a lower frequency, al.in a larger wavelength, the nucleus more than the lines of force 1> e1 higher frequencies; The voltage tang induced in the unipolar playback head decreases so finitely as the frequency increases. It is known to use two systems one after the other in order to superpose the Frednenz curves. However, there is a disadvantage here. ; SO div i> eSKi _ \ I-tastllttiilcte spatially separated and # - "iilit temporally against each other Iss is also known. (It'il: tiii dun magnetic poles sitting \\ 'icklungcn% -iT: rhirdcile` f'lli @ 11111 @ @ 7alllt'It 711 file I:. @ rlül'liiii -According can Urteik the hollow # Svstei.i, -without their \ achtcile characterized @ C # @ u rt # iili Lall in a two-pole \\ with on entgegengesetltt '. ii St # iton des 1 \ 'It # @ lt # I'Iilgebendeil \ lagnm "gmmmtr: igersaiMdwarhu # it Magnetic cores get me a Keni vain \ Vic l; lmitr, the other dare; gen unile @@ irl: t # lt remains In this case, the counterpoint to the speaking coil forms a t-; t », #"(# iil) () l, which bundles the lines of force and reduces the effective auxiliary flow zone of the speech nucleus.

In der _\laiildung ist die 1?rlinüung, skizziert. Die heilen \lagnetkernt# t 1111s1 = sind etwas versetzt zu Beiden Seiten des Alagncttonträgers 3 angebracht. Nur der Kern t trägt eint-, Wicklung. während (1e1- Kern cllme Meldung nur zur Bündvlting d(#:, Magnetflusses dienf.In the formation the direction is sketched. The heal \ lagnetkernt # t 1111s1 = are slightly offset on both sides of the aluminum carrier 3. Only the core t carries one, winding. while (1e1- core cllme message only for bundling d (# :, magnetic flux is used.

Claims (1)

PATE\TaNSPRUCII: Zweilxdiger\\ iedergaüekopf für\iagnt#ttonniaschinen, dadurch gckennzt-ichnet, daB nur ein Pol eine Wiclaun tragt, während der zweite unbewickelt bleibt. Zur Abgrenzung des standes vom Stand der Teclinik ,iiirl ini Erteilungsverfahren folgende Druckschriften in Betracht gezogen worden: deutsche Patentschriften . . . . \r. t1ti 834, 95 -18 I , 585 -1-5-1; Zcitsclii-ift für tecliili@cllc 1'li@:il: t i@l.;zi Nr.I2. S jy8.PATE \ TaNSPRUCII: Two-fold \\ iedergaüekopf for \ iagnt # ttonni-machines, by the fact that only one pole wears a winding, while the second remains unwound. To distinguish the status from the status of the Teclinik, iiirl ini grant procedure, the following publications have been considered: German patents. . . . \ r. t1ti 834, 9 5 -18 I, 585 -1-5-1; Zcitsclii-ift for tecliili @ cllc 1'li @: il: ti @ l.; Zi no.I2. S jy8.
DEL105832D 1941-11-06 1941-11-06 Playback head for magnetic sound machines Expired DE746040C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL105832D DE746040C (en) 1941-11-06 1941-11-06 Playback head for magnetic sound machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL105832D DE746040C (en) 1941-11-06 1941-11-06 Playback head for magnetic sound machines

Publications (1)

Publication Number Publication Date
DE746040C true DE746040C (en) 1944-10-02

Family

ID=7290232

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL105832D Expired DE746040C (en) 1941-11-06 1941-11-06 Playback head for magnetic sound machines

Country Status (1)

Country Link
DE (1) DE746040C (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE585454C (en) * 1929-10-17 1933-10-03 Telegraphie Patent Syndikat G Speech head for recording or scanning speech exchange currents
DE595481C (en) * 1931-07-31 1934-04-14 British Blattnerphone Stille S Circuit arrangement for the windings of the speech cores in telegraphones
DE656834C (en) * 1938-02-16 Eduard Schueller Dipl Ing Speech head for reproducing magnetograms

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE656834C (en) * 1938-02-16 Eduard Schueller Dipl Ing Speech head for reproducing magnetograms
DE585454C (en) * 1929-10-17 1933-10-03 Telegraphie Patent Syndikat G Speech head for recording or scanning speech exchange currents
DE595481C (en) * 1931-07-31 1934-04-14 British Blattnerphone Stille S Circuit arrangement for the windings of the speech cores in telegraphones

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