GB1334019A - Active filter circuit - Google Patents

Active filter circuit

Info

Publication number
GB1334019A
GB1334019A GB1334019DA GB1334019A GB 1334019 A GB1334019 A GB 1334019A GB 1334019D A GB1334019D A GB 1334019DA GB 1334019 A GB1334019 A GB 1334019A
Authority
GB
United Kingdom
Prior art keywords
active filter
filter circuit
sept
low pass
filter
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
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.)
Post Office
Original Assignee
Post Office
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 Post Office filed Critical Post Office
Publication of GB1334019A publication Critical patent/GB1334019A/en
Expired 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
    • H03H11/126—Frequency selective two-port networks using amplifiers with feedback using a single operational amplifier

Landscapes

  • Networks Using Active Elements (AREA)

Abstract

1334019 Active filters; amplifiers POST OFFICE 5 Sept 1972 [6 Sept 1971] 41547/71 Headings H3U and H3W In a bandpass or low pass active filter of the type including a differential amplifier, a negative feedback path to the inverting input in. eludes resistors 12, 13 and a capacitor 14. The filter may be, as shown, a low pass Sallen and Key type or alternatively, Figs. 2, 3 (not shown), band pass Sallen and Key types.
GB1334019D 1971-09-06 1971-09-06 Active filter circuit Expired GB1334019A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4154771 1971-09-06

Publications (1)

Publication Number Publication Date
GB1334019A true GB1334019A (en) 1973-10-17

Family

ID=10420213

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1334019D Expired GB1334019A (en) 1971-09-06 1971-09-06 Active filter circuit

Country Status (2)

Country Link
CA (1) CA970446A (en)
GB (1) GB1334019A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105032643A (en) * 2015-07-06 2015-11-11 苏州南光电子科技有限公司 Intelligent filter fixed shower head

Also Published As

Publication number Publication date
CA970446A (en) 1975-07-01

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years