FR2404278A1 - Magnetic tape starting vibration inhibitor - employs speed-dependent feedback to power amplifier and parallel resonating circuit - Google Patents

Magnetic tape starting vibration inhibitor - employs speed-dependent feedback to power amplifier and parallel resonating circuit

Info

Publication number
FR2404278A1
FR2404278A1 FR7826132A FR7826132A FR2404278A1 FR 2404278 A1 FR2404278 A1 FR 2404278A1 FR 7826132 A FR7826132 A FR 7826132A FR 7826132 A FR7826132 A FR 7826132A FR 2404278 A1 FR2404278 A1 FR 2404278A1
Authority
FR
France
Prior art keywords
magnetic tape
power amplifier
resonating circuit
dependent feedback
tape starting
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.)
Pending
Application number
FR7826132A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of FR2404278A1 publication Critical patent/FR2404278A1/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/46—Controlling, regulating, or indicating speed
    • G11B15/48—Starting; Accelerating; Decelerating; Arrangements preventing malfunction during drive change
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/46—Controlling, regulating, or indicating speed
    • G11B15/54—Controlling, regulating, or indicating speed by stroboscope; by tachometer

Landscapes

  • Control Of Electric Motors In General (AREA)

Abstract

A circuit is used for inhibiting mechanical vibration, esp. mechanical vibration generated during start up of a magnetic tape transporting capstan(A) in a tape recorder. There is a tachometer(T) which delivers revolution count data from the drive motor (M) to a power supply amplifier (V) over a feedback loop. An LC parallel oscillating circuit is connected across the amplifier and motor of counter the vibrational effect by virtue of its preselected resonant frequency.
FR7826132A 1977-09-26 1978-09-12 Magnetic tape starting vibration inhibitor - employs speed-dependent feedback to power amplifier and parallel resonating circuit Pending FR2404278A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772743160 DE2743160A1 (en) 1977-09-26 1977-09-26 DEVICE FOR DAMPING MECHANICAL VIBRATIONS OF THE TAPE TRANSPORT SYSTEM OF MAGNETIC TAPE DEVICES WHEN STARTING

Publications (1)

Publication Number Publication Date
FR2404278A1 true FR2404278A1 (en) 1979-04-20

Family

ID=6019866

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7826132A Pending FR2404278A1 (en) 1977-09-26 1978-09-12 Magnetic tape starting vibration inhibitor - employs speed-dependent feedback to power amplifier and parallel resonating circuit

Country Status (6)

Country Link
AT (1) AT357793B (en)
BE (1) BE870773A (en)
DE (1) DE2743160A1 (en)
FR (1) FR2404278A1 (en)
IT (1) IT1099163B (en)
NL (1) NL7806967A (en)

Also Published As

Publication number Publication date
IT7828033A0 (en) 1978-09-25
ATA618278A (en) 1979-12-15
DE2743160A1 (en) 1979-03-29
NL7806967A (en) 1979-03-28
IT1099163B (en) 1985-09-18
AT357793B (en) 1980-07-25
BE870773A (en) 1979-03-26

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