JPS58190814U

JPS58190814U - tape recorder

Info

Publication number: JPS58190814U
Application number: JP8827582U
Authority: JP
Inventors: 安斎　正三
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 1982-06-14
Filing date: 1982-06-14
Publication date: 1983-12-19

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 drawings]

第１図は従来のテープレコーダ装置の電気配線図、第２
図は、この考案の一実施例によるテープレコーダ装置の
要部回路図、第３図はこの考案の他の実施例を示す要部
回路図、第４図はパワーアンプ負荷回路の等価回路図で
ある。図においてζ　１はＬｃｈ入力端子、２はＲｃｈ入力端
子、６はＬｃｈパワーアンプ、７はＬｃｈ帰還抵抗、８
はＬｃｈ入力帰還抵抗、１３はＲｃｈパワーアンプ、１
４はＲｃｈ帰還抵抗、１５はＲｃｈ入力帰還抵抗、１７
はジャック、１８はスピーカ、１９はＬｃｈ第２帰還抵
抗である。なお、図中同一符号は同一、または相当部分
を示す。Figure 1 is an electrical wiring diagram of a conventional tape recorder device;
The figure is a circuit diagram of the main part of a tape recorder device according to one embodiment of this invention, FIG. 3 is a circuit diagram of the main part showing another embodiment of this invention, and FIG. 4 is an equivalent circuit diagram of a power amplifier load circuit. be. In the figure, ζ 1 is the Lch input terminal, 2 is the Rch input terminal, 6 is the Lch power amplifier, 7 is the Lch feedback resistor, 8
is the Lch input feedback resistor, 13 is the Rch power amplifier, 1
4 is the Rch feedback resistor, 15 is the Rch input feedback resistor, 17
is a jack, 18 is a speaker, and 19 is an Lch second feedback resistor. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

(1) The recording and playback circuit has a stereo configuration, and has one speaker that is driven when no plug is inserted, and a stereo signal is supplied to the outside by inserting the plug, and has a switching function that changes the amplification level of the playback circuit. In a device equipped with a jack, when the plug is not inserted into the jack, the speaker is driven by a monaural signal obtained by mixing the stereo signal, and when the plug is inserted into the jack, the monaural signal is driven by the speaker. A tape recorder configured to cut off the signal supply, reduce the amplification factor of the reproduction circuit, and supply the reduced stereo signal to the outside via the plug.

(2) The jack performs a switching operation so as to supply externally a stereo signal current attenuated by a current limiter when a plug is inserted. Tape recorder.