JPS59134993U - Phono signal input circuit - Google Patents
Phono signal input circuitInfo
- Publication number
- JPS59134993U JPS59134993U JP2680583U JP2680583U JPS59134993U JP S59134993 U JPS59134993 U JP S59134993U JP 2680583 U JP2680583 U JP 2680583U JP 2680583 U JP2680583 U JP 2680583U JP S59134993 U JPS59134993 U JP S59134993U
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- changeover
- changeover switch
- signal input
- phono
- 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.)
- Pending
Links
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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来装置の一例の構成を示す回路構成図、第２
図はＭＣ型カートリッジの出力に昇圧トランス番接続し
た場合の負荷インピーダンスの変化に対する周波数応答
の変化を説明するための図、第３−は本考案の一実施例
の構成を示す回路構成図である。
１・・・・・・フォノ信号入力端子、２・・・・・・ヘ
ッドアンプ、３・・・・・・ＭＭ型用負荷インピーダン
ス回路、４・・・・・・昇圧トランス、５・・・・・・
ＭＣ型用負荷インピーダンス回路、６，７・・・・・・
切換スイッチ。Figure 1 is a circuit configuration diagram showing the configuration of an example of a conventional device;
Figure 3 is a diagram for explaining changes in frequency response with respect to changes in load impedance when a step-up transformer is connected to the output of an MC type cartridge, and Figure 3 is a circuit configuration diagram showing the configuration of an embodiment of the present invention. . 1...Phono signal input terminal, 2...Head amplifier, 3...Load impedance circuit for MM type, 4...Step-up transformer, 5... ...
Load impedance circuit for MC type, 6, 7...
Changeover switch.
Claims (1)
プに入力するフォノ信号入力回路において、フォノ信号
が入力される入力端子に共通端子が接続された第１の切
換スイッチと、共通端子かへランアンプの入力端に接続
された第２の切換スイッチと、上記第１の切換スイッチ
の第１の切換端子と上記第２の切換スイッチの第１の切
換端子との間に挿入されたムービングマグネット型カー
トリ゛ゾジ用の負荷インピーダンスと、上記第１の切換
スイッチの第２の切換端子に一次側が接続された昇圧ト
ランスと、この昇圧トランスの二次側と上記第２の切換
スイッチの第２の切換端子との間に挿入されたムービン
グコイル型カートリッジ用の負荷インピーダンスとを具
備したことを特徴とするフォノ信号入力回路。In a phono signal input circuit that inputs a phono signal, which is the output of a record player, to a head amplifier, there is a first changeover switch whose common terminal is connected to the input terminal into which the phono signal is input, and a common terminal connected to the input terminal of the helan amplifier. a second changeover switch connected to the switch, and a moving magnet type cartridge module inserted between a first changeover terminal of the first changeover switch and a first changeover terminal of the second changeover switch. a step-up transformer whose primary side is connected to the second changeover terminal of the first changeover switch, and a connection between the secondary side of this step-up transformer and the second changeover terminal of the second changeover switch. A phono signal input circuit comprising a load impedance for a moving coil type cartridge inserted between the phono signal input circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2680583U JPS59134993U (en) | 1983-02-25 | 1983-02-25 | Phono signal input circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2680583U JPS59134993U (en) | 1983-02-25 | 1983-02-25 | Phono signal input circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59134993U true JPS59134993U (en) | 1984-09-08 |
Family
ID=30157709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2680583U Pending JPS59134993U (en) | 1983-02-25 | 1983-02-25 | Phono signal input circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59134993U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5378801A (en) * | 1976-12-22 | 1978-07-12 | Nippon Gakki Seizo Kk | Equalizer amplifer |
| JPS5422401U (en) * | 1977-07-16 | 1979-02-14 |
-
1983
- 1983-02-25 JP JP2680583U patent/JPS59134993U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5378801A (en) * | 1976-12-22 | 1978-07-12 | Nippon Gakki Seizo Kk | Equalizer amplifer |
| JPS5422401U (en) * | 1977-07-16 | 1979-02-14 |
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