JPS6134689B2 - - Google Patents

Info

Publication number
JPS6134689B2
JPS6134689B2 JP14870879A JP14870879A JPS6134689B2 JP S6134689 B2 JPS6134689 B2 JP S6134689B2 JP 14870879 A JP14870879 A JP 14870879A JP 14870879 A JP14870879 A JP 14870879A JP S6134689 B2 JPS6134689 B2 JP S6134689B2
Authority
JP
Japan
Prior art keywords
filter
variable resistor
input terminal
circuit
coupled
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.)
Expired
Application number
JP14870879A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5672518A (en
Inventor
Korehiko Tsuribe
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.)
NIPPON OODEIO KK
Original Assignee
NIPPON OODEIO KK
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 NIPPON OODEIO KK filed Critical NIPPON OODEIO KK
Priority to JP14870879A priority Critical patent/JPS5672518A/ja
Publication of JPS5672518A publication Critical patent/JPS5672518A/ja
Publication of JPS6134689B2 publication Critical patent/JPS6134689B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/1217—Frequency selective two-port networks using amplifiers with feedback using a plurality of operational amplifiers
    • H03H11/1252—Two integrator-loop-filters

Landscapes

  • Networks Using Active Elements (AREA)
JP14870879A 1979-11-16 1979-11-16 Continuously variable frequency filter Granted JPS5672518A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14870879A JPS5672518A (en) 1979-11-16 1979-11-16 Continuously variable frequency filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14870879A JPS5672518A (en) 1979-11-16 1979-11-16 Continuously variable frequency filter

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP16923385A Division JPS61142813A (ja) 1985-07-31 1985-07-31 連続可変周波数フイルタ回路

Publications (2)

Publication Number Publication Date
JPS5672518A JPS5672518A (en) 1981-06-16
JPS6134689B2 true JPS6134689B2 (enrdf_load_html_response) 1986-08-08

Family

ID=15458815

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14870879A Granted JPS5672518A (en) 1979-11-16 1979-11-16 Continuously variable frequency filter

Country Status (1)

Country Link
JP (1) JPS5672518A (enrdf_load_html_response)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61142813A (ja) * 1985-07-31 1986-06-30 Nippon Audio:Kk 連続可変周波数フイルタ回路

Also Published As

Publication number Publication date
JPS5672518A (en) 1981-06-16

Similar Documents

Publication Publication Date Title
KR19980064159A (ko) 필터 회로
JPH05121973A (ja) 増幅器
JPS63136712A (ja) 差動比較回路
JP3390093B2 (ja) 差動増幅器
JPH0226883B2 (enrdf_load_html_response)
US4547741A (en) Noise reduction circuit with a main signal path and auxiliary signal path having a high pass filter characteristic
US4404529A (en) Lowpass filter with electronic control of cutoff and resonance
KR940001817B1 (ko) 노이즈 감소회로에 사용되는 액티브 필터용 고역 가중치 회로
KR940005375B1 (ko) 증폭 회로
US4437070A (en) Amplifier arrangement whose overall gain is controllable by means of a control voltage
JPS6134689B2 (enrdf_load_html_response)
JPH0324810B2 (enrdf_load_html_response)
JPS61142813A (ja) 連続可変周波数フイルタ回路
JP3367875B2 (ja) 対数変換回路及びこれを用いたトランスコンダクター
JPH0154884B2 (enrdf_load_html_response)
JPS62160808A (ja) 積分回路
JPH01126816A (ja) 広帯域可変利得増幅回路
JP3063124B2 (ja) 増幅回路
JPH04277917A (ja) 可変インピーダンス回路
JPS58213517A (ja) 利得制御形差動増幅器
JPH0738556B2 (ja) 積分回路
JPH10126214A (ja) フィルタ回路
JPH05291844A (ja) レベルシフト回路
JPH0754893B2 (ja) レベルシフト回路
JPH0630424B2 (ja) 利得可変型増幅回路