JPS6315693U - - Google Patents
Info
- Publication number
- JPS6315693U JPS6315693U JP10716386U JP10716386U JPS6315693U JP S6315693 U JPS6315693 U JP S6315693U JP 10716386 U JP10716386 U JP 10716386U JP 10716386 U JP10716386 U JP 10716386U JP S6315693 U JPS6315693 U JP S6315693U
- Authority
- JP
- Japan
- Prior art keywords
- microphone
- amplifier circuit
- cabinet
- input
- differential amplifier
- 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
Description
図面は、何れも本考案に関し第１図は録音回路
の一実施例、第２図は本考案の録音回路が組込ま
れたテープレコーダーの斜視図、第３図はマイク
ロフオンの斜視図である。
主な図番の説明、１……キヤビネツト、４……
収音孔、５……マイクロフオン用収音孔、６……
マイクロフオン取付用基板、７……第１マイクロ
フオン、８……第２マイクロフオン、９……差動
増幅回路、１０……第１入力端子、１１……第２
入力端子、１２……録音用増幅回路、１３……磁
気ヘツド。
The drawings relate to the present invention: FIG. 1 is an embodiment of a recording circuit, FIG. 2 is a perspective view of a tape recorder incorporating the recording circuit of the present invention, and FIG. 3 is a perspective view of a microphone. Explanation of main drawing numbers, 1...cabinet, 4...
Sound collection hole, 5...Sound collection hole for microphone, 6...
Microphone mounting board, 7...first microphone, 8...second microphone, 9...differential amplifier circuit, 10...first input terminal, 11...second microphone
Input terminal, 12... Recording amplifier circuit, 13... Magnetic head.
Claims (1)
収音するべく取付けられている第１マイクロフオ
ンと、前記キヤビネツトの第１マイクロフオンの
近傍に取付けられていると共に収音孔が閉塞され
ている第２マイクロフオンと、前記第１マイクロ
フオン及び第２マイクロフオンからの信号が夫々
入力されると共に入力信号が差動関係にある第１
及び第２の入力端子を有する差動増幅回路と、該
差動増幅回路の出力信号が入力されると共に磁気
ヘツドが負荷として接続されている録音用増幅回
路とより成るテープレコーダーの録音回路。 a first microphone installed in the cabinet of the tape recorder to collect external sounds; and a second microphone installed near the first microphone in the cabinet and having a blocked sound collection hole. and a first microphone in which signals from the first microphone and the second microphone are respectively inputted, and the input signals are in a differential relationship.
and a differential amplifier circuit having a second input terminal, and a recording amplifier circuit to which an output signal of the differential amplifier circuit is input and a magnetic head is connected as a load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10716386U JPS6315693U (en) | 1986-07-11 | 1986-07-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10716386U JPS6315693U (en) | 1986-07-11 | 1986-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6315693U true JPS6315693U (en) | 1988-02-02 |
Family
ID=30983190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10716386U Pending JPS6315693U (en) | 1986-07-11 | 1986-07-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6315693U (en) |
-
1986
- 1986-07-11 JP JP10716386U patent/JPS6315693U/ja active Pending
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