JPS60116716U

JPS60116716U - mixer circuit

Info

Publication number: JPS60116716U
Application number: JP452084U
Authority: JP
Inventors: 西尾　俊広
Original assignee: 日本ビクター株式会社
Priority date: 1984-01-17
Filing date: 1984-01-17
Publication date: 1985-08-07

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 drawings]

第１図は基本的な演算増幅回路を示し、第２図は従来の
ミキサー回路例を示し、第３図はこの考案のミキサー回
路例を示し、第４図はこの考案のミキサー回路を構成す
る第１および第２のインピーダンス回路の具体例を示す
ものである。１・・・再生アンプ、２・・・再生アンプの一方の入力
端、７・・・同他方の入力端、６・・・同出力端、３゜
８、　１４．　１６・・・抵抗、４・・・出力端子、５
・・・選択性帰還回路（第１のインピーダンス回路）、
９゜１０．１１，１７，１８，１９・・・コンデンサ、
１２・・・ミキサーアンプ、１３・・・外部信号端子、
１５・・・帰還用抵抗、２０・・・第２のインピーダン
ス回路、Ｔ・・・テープ、Ｈ・・・再生ヘッド。Fig. 1 shows a basic operational amplifier circuit, Fig. 2 shows an example of a conventional mixer circuit, Fig. 3 shows an example of a mixer circuit of this invention, and Fig. 4 shows the configuration of a mixer circuit of this invention. A specific example of the first and second impedance circuits is shown. 1... Reproduction amplifier, 2... One input terminal of the reproduction amplifier, 7... The other input terminal of the same, 6... Output terminal of the same, 3°8, 14. 16...Resistor, 4...Output terminal, 5
... selective feedback circuit (first impedance circuit),
9゜10.11, 17, 18, 19... Capacitor,
12...Mixer amplifier, 13...External signal terminal,
15... Feedback resistor, 20... Second impedance circuit, T... Tape, H... Playback head.

Claims

[Scope of utility model registration request]

In a mixer circuit used in an electronic device, an operational amplifier circuit has one signal source connected to one input end, and a first impedance circuit forming a feedback circuit from the output end connected to the other input end; A mixer circuit configured as a second impedance circuit having one end connected to the other input end of the operational amplifier circuit and the other end connected to the other signal source.