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JPS6424615A - Vtr control head amplifier - Google Patents

Vtr control head amplifier

Info

Publication number
JPS6424615A
JPS6424615A JP62181911A JP18191187A JPS6424615A JP S6424615 A JPS6424615 A JP S6424615A JP 62181911 A JP62181911 A JP 62181911A JP 18191187 A JP18191187 A JP 18191187A JP S6424615 A JPS6424615 A JP S6424615A
Authority
JP
Japan
Prior art keywords
signal
recording
head
control head
trs
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.)
Granted
Application number
JP62181911A
Other languages
Japanese (ja)
Other versions
JP2541992B2 (en
Inventor
Shizuo Ida
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62181911A priority Critical patent/JP2541992B2/en
Publication of JPS6424615A publication Critical patent/JPS6424615A/en
Application granted granted Critical
Publication of JP2541992B2 publication Critical patent/JP2541992B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Amplifiers (AREA)

Abstract

PURPOSE:To eliminate the need for an electrolyte capacitor by connecting four transistors(TRs) in series between a power supply and a recording constant current source respectively, connecting each connecting point to each of two terminals of a control head and connecting a recording signal input and a recording signal inverted input to a base of each TR respectively. CONSTITUTION:A signal is received from a control head 6 at the reproduction, amplified by the gain (R1/R2) of the amplifier and outputted to a terminal A. A recording signal is inputted from terminals B, the inverse of B at the recording to output a signal to the control head 6. That is, in giving a positive signal to the terminal B, TRs 9, 8 are turned on and the signal is sent in a route of TR 9 head 6 TR 8. In giving a positive signal to the terminal inverse of B, the signal is sent in a route of TR 7 head 6 TR 10. Since the recording part of the VTR head amplifier is constituted by the TRs and resistors, no electrolyte capacitor is required.
JP62181911A 1987-07-21 1987-07-21 VTR control head amplifier Expired - Lifetime JP2541992B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62181911A JP2541992B2 (en) 1987-07-21 1987-07-21 VTR control head amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62181911A JP2541992B2 (en) 1987-07-21 1987-07-21 VTR control head amplifier

Publications (2)

Publication Number Publication Date
JPS6424615A true JPS6424615A (en) 1989-01-26
JP2541992B2 JP2541992B2 (en) 1996-10-09

Family

ID=16109052

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62181911A Expired - Lifetime JP2541992B2 (en) 1987-07-21 1987-07-21 VTR control head amplifier

Country Status (1)

Country Link
JP (1) JP2541992B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03231810A (en) * 1990-02-08 1991-10-15 Sankyo Seimitsu Kanagata Kk Mold clamping mechanism of motorized molding machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03231810A (en) * 1990-02-08 1991-10-15 Sankyo Seimitsu Kanagata Kk Mold clamping mechanism of motorized molding machine

Also Published As

Publication number Publication date
JP2541992B2 (en) 1996-10-09

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