JPS6467017A - Loop filter for servo circuit - Google Patents

Loop filter for servo circuit

Info

Publication number
JPS6467017A
JPS6467017A JP22349187A JP22349187A JPS6467017A JP S6467017 A JPS6467017 A JP S6467017A JP 22349187 A JP22349187 A JP 22349187A JP 22349187 A JP22349187 A JP 22349187A JP S6467017 A JPS6467017 A JP S6467017A
Authority
JP
Japan
Prior art keywords
resistor
capacitor
terminal
operational amplifier
resistors
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
JP22349187A
Other languages
Japanese (ja)
Other versions
JP2553584B2 (en
Inventor
Hiroshi Yasuda
Masayoshi Nakamura
Masanori Harui
Akihiko Nishioka
Minoru Hirata
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP62223491A priority Critical patent/JP2553584B2/en
Publication of JPS6467017A publication Critical patent/JPS6467017A/en
Application granted granted Critical
Publication of JP2553584B2 publication Critical patent/JP2553584B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Networks Using Active Elements (AREA)
  • Feedback Control In General (AREA)

Abstract

PURPOSE:To prevent a phase lag by applying feedback from the output of an operational amplifier to an inventing input through a capacitor and two resistors connected in series, connecting a resistor and a capacitor between the two series resistors, furthermore, connecting one terminal of the resistor to the inverting input of the operational amplifier, and supplying a signal from the other terminal of the resistor. CONSTITUTION:The operational amplifier 1, a 1st capacitor 6 connected between the output of the operational amplifier 1 and the inverting input, and 1st and 2nd resistors 2, 3 connected in series and both terminals are connected n parallel with the 1st capacitor 6 are provided. The a 3rd resistor 4 and a 2nd capacitor 7 connected in series, whose one terminal is connected to the connecting point of 1st and 2nd resistors 2, 3 and the other terminal is connected to a low impedance, and a 4th resistor 5 whose one terminal is connected to the inverting input of the operational amplifier 1 are used. Thus, the loop filter of the servo circuit with less number of externally mounted components and pins of the IC and less phase lag is formed.
JP62223491A 1987-09-07 1987-09-07 Servo circuit loop filter Expired - Fee Related JP2553584B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62223491A JP2553584B2 (en) 1987-09-07 1987-09-07 Servo circuit loop filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62223491A JP2553584B2 (en) 1987-09-07 1987-09-07 Servo circuit loop filter

Publications (2)

Publication Number Publication Date
JPS6467017A true JPS6467017A (en) 1989-03-13
JP2553584B2 JP2553584B2 (en) 1996-11-13

Family

ID=16798969

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62223491A Expired - Fee Related JP2553584B2 (en) 1987-09-07 1987-09-07 Servo circuit loop filter

Country Status (1)

Country Link
JP (1) JP2553584B2 (en)

Also Published As

Publication number Publication date
JP2553584B2 (en) 1996-11-13

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees