JPS5973836U

JPS5973836U - active filter

Info

Publication number: JPS5973836U
Application number: JP16996682U
Authority: JP
Inventors: 志水　義孝
Original assignee: 株式会社東芝
Priority date: 1982-11-10
Filing date: 1982-11-10
Publication date: 1984-05-19

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来のアクティブフィルタの回路図、第２図、
第４図、第５図は本考案の実施例の回路図であり、第２
図はバイパスアクティブフィルタ、第４図はローパスア
クティブフィルタ、第５図はバンドパスアクティブフィ
ルタを示している。第３図は第２図に示すバイパスフィ
ルタのエミッタ出力とコレクタ出力における周波数特性
を示したものである。１・・・入力端子、２．３・・・コンデンサ、４．　５
゜６、　７．　１２・・・抵抗、８・・・トランジスタ
、９・・・電源端子、１０・・・アース端子、１１．１
３・・・出力端　・子。Figure 1 is a circuit diagram of a conventional active filter; Figure 2 is a circuit diagram of a conventional active filter;
4 and 5 are circuit diagrams of the embodiment of the present invention, and the second
The figure shows a bypass active filter, FIG. 4 shows a low-pass active filter, and FIG. 5 shows a band-pass active filter. FIG. 3 shows the frequency characteristics at the emitter output and collector output of the bypass filter shown in FIG. 2. 1...Input terminal, 2.3...Capacitor, 4. 5
゜6, 7. 12...Resistor, 8...Transistor, 9...Power supply terminal, 10...Earth terminal, 11.1
3...Output terminal/child.

Claims

[Scope of utility model registration request]

An active filter comprising a transistor, a capacitor, and a resistor connected to each other, characterized in that a p-wave output of the active filter is taken out from a collector terminal of the transistor.