JPS5637824A - Magnetic recording circuit device - Google Patents

Magnetic recording circuit device

Info

Publication number
JPS5637824A
JPS5637824A JP11186079A JP11186079A JPS5637824A JP S5637824 A JPS5637824 A JP S5637824A JP 11186079 A JP11186079 A JP 11186079A JP 11186079 A JP11186079 A JP 11186079A JP S5637824 A JPS5637824 A JP S5637824A
Authority
JP
Japan
Prior art keywords
recording signal
transformer
securely
recording
impedance
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
JP11186079A
Other languages
Japanese (ja)
Inventor
Hideo Inoue
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.)
Teac Corp
Original Assignee
Teac Corp
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 Teac Corp filed Critical Teac Corp
Priority to JP11186079A priority Critical patent/JPS5637824A/en
Publication of JPS5637824A publication Critical patent/JPS5637824A/en
Pending legal-status Critical Current

Links

Landscapes

  • Digital Magnetic Recording (AREA)

Abstract

PURPOSE: To control a recording signal level easily and securely by controlling the primary-side shunt quantity of a recording signal by varying the secondary-side impedance of a transformer in accordance with a recording signal frequency.
CONSTITUTION: Through capacitor 31, control circuit 18 extracts a recording signal of high frequency range and then generates a DC voltage that corresponds to the frequency, exercising transistors 15 and 16 that form an impedance element connected to the secondary windings 13 and 14 of transformer 12. Consequently, the impedance of the primary winding 11 of transformer 12 varies and recording current applied to recording head 2 by way of bias trapping circuit 6 also varies in accordance with the shunt quantity to winding 11 so as to adjust the substantial characteristics of equalizer amplifier 3 easily and securely. Similarly, bias current is also controlled by transformer 12', so that the recording signal level can be controlled relatively easily and securely.
COPYRIGHT: (C)1981,JPO&Japio
JP11186079A 1979-08-31 1979-08-31 Magnetic recording circuit device Pending JPS5637824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11186079A JPS5637824A (en) 1979-08-31 1979-08-31 Magnetic recording circuit device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11186079A JPS5637824A (en) 1979-08-31 1979-08-31 Magnetic recording circuit device

Publications (1)

Publication Number Publication Date
JPS5637824A true JPS5637824A (en) 1981-04-11

Family

ID=14571967

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11186079A Pending JPS5637824A (en) 1979-08-31 1979-08-31 Magnetic recording circuit device

Country Status (1)

Country Link
JP (1) JPS5637824A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61137207A (en) * 1984-12-07 1986-06-24 Canon Inc Magnetic recorder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61137207A (en) * 1984-12-07 1986-06-24 Canon Inc Magnetic recorder

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