SU126282A1 - The method of turning on the magnetic head to reproduce the magnetic track - Google Patents

The method of turning on the magnetic head to reproduce the magnetic track

Info

Publication number
SU126282A1
SU126282A1 SU576806A SU576806A SU126282A1 SU 126282 A1 SU126282 A1 SU 126282A1 SU 576806 A SU576806 A SU 576806A SU 576806 A SU576806 A SU 576806A SU 126282 A1 SU126282 A1 SU 126282A1
Authority
SU
USSR - Soviet Union
Prior art keywords
magnetic
head
turning
reproduce
magnetic head
Prior art date
Application number
SU576806A
Other languages
Russian (ru)
Inventor
В.В. Раковский
Original Assignee
В.В. Раковский
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 by В.В. Раковский filed Critical В.В. Раковский
Priority to SU576806A priority Critical patent/SU126282A1/en
Application granted granted Critical
Publication of SU126282A1 publication Critical patent/SU126282A1/en

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  • Magnetic Heads (AREA)

Description

При воспроизведении магнитной фонограммы внешние магнитные пол  от электродвигателей, силовых трансформаторов, монтажа и т. д. вли ют непосредственно на магнитную головку, воспроизвод щую магнитную запись. Дл  получени  удовлетворительного соотношени  между уровнем полезного сигнала и уровнем помех обычно примен ют экраны из сплавов с большой проводимостью; в некоторых случа х ввод т компенсирующую катущку, соединенную последовательно с воспроизвод щей головкой, и ориентируют ее в пространстве так, чтобы э.д.с., наведенна  в ЭТОЙ катущке от внешних полей, компенсировала помехи, возникающие в воспроизвод щей головке. В головках кольцевого типа из двух магнитонроводов иногда используют секционированную магнитную цепь с лротивофазно включенными секци ми.When playing a magnetic phonogram, external magnetic fields from electric motors, power transformers, mounting, etc., directly affect the magnetic head, which reproduces the magnetic recording. In order to obtain a satisfactory ratio between the level of the useful signal and the level of interference, screens of high conductivity alloys are usually used; In some cases, a compensating coil, connected in series with the reproducing head, is inserted and oriented in space so that the emf induced in THIS coil from external fields compensates for the disturbances arising in the reproducing head. In ring-type heads of two magnetic circuits, sometimes, a sectioned magnetic circuit with opposite-phase sections is used.

Применение металлических экранов не экономично; введение компенсирующей катушки затруднительно и малоэффектно; использование секционированной цепи с противофазно включенными секци ми возможно лишь при воспроизведении противофазной магнитной) фонограммы .The use of metal screens is not economical; the introduction of a compensating coil is difficult and of little effect; The use of a sectioned circuit with antiphase included sections is possible only when playing an antiphase magnetic soundtrack.

Описываемый способ включени  магнитной головки воспроиз-ведени  обеспечивает значительное уменьшение помех -по сравнению с обычно примен емыми методами включени . Это достигаетс  тем, что у магнитной головки воспроизведени  вывод т третий провод, соедин ющий обе половины обмотки головки, и между ним и началами обмоток включают регулирующие сопротивлени  дл  уравнивани  по амплитуде э.д.с. наводок на головку, наход щиес  в противофазе.The described method of switching on the magnetic reproduction head provides a significant reduction in interference, compared to the commonly used switching methods. This is achieved by the fact that a third wire is connected to the magnetic reproduction head, which connects both halves of the head winding, and between it and the beginnings of the windings include regulating resistances for equalizing in amplitude of emf interference on the head, which is in antiphase.

На фиг. 1 показана схема включени  магнитной головки с трансформаторным входом; па фиг. 2-схема включени  головки с бестрансформаторным входомОт средней части обмотки головки воспроизведени -выводитс  обща  точка О и концы обмоток 1 v. 2 (фиг. 1) включаютс  на сопротивлени  R и Регулиру  одно из сопротивлений, добиваютс  равенства наFIG. 1 shows a circuit for turning on a magnetic head with a transformer input; pas figs. 2-head switching circuit with transformerless input. From the middle part of the winding of the playback head, the common point O and the ends of the windings 1 v are output. 2 (FIG. 1) are included on the resistances R and the Regulator one of the resistances, achieve equality on

SU576806A 1954-12-30 1954-12-30 The method of turning on the magnetic head to reproduce the magnetic track SU126282A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU576806A SU126282A1 (en) 1954-12-30 1954-12-30 The method of turning on the magnetic head to reproduce the magnetic track

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU576806A SU126282A1 (en) 1954-12-30 1954-12-30 The method of turning on the magnetic head to reproduce the magnetic track

Publications (1)

Publication Number Publication Date
SU126282A1 true SU126282A1 (en) 1959-11-30

Family

ID=48397594

Family Applications (1)

Application Number Title Priority Date Filing Date
SU576806A SU126282A1 (en) 1954-12-30 1954-12-30 The method of turning on the magnetic head to reproduce the magnetic track

Country Status (1)

Country Link
SU (1) SU126282A1 (en)

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