JPS645205U - - Google Patents
Info
- Publication number
- JPS645205U JPS645205U JP9874487U JP9874487U JPS645205U JP S645205 U JPS645205 U JP S645205U JP 9874487 U JP9874487 U JP 9874487U JP 9874487 U JP9874487 U JP 9874487U JP S645205 U JPS645205 U JP S645205U
- Authority
- JP
- Japan
- Prior art keywords
- equalizer
- switching transistor
- diode
- circuit
- tape
- 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
- 238000010586 diagram Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Description
第１図は本考案に係るテープレコーダ等のイコ
ライザ回路の一実施例を示す回路図、第２図は同
上回路のスイツチングトランジスタのエミツタ波
形図、第３図は従来のテープレコーダ等のイコラ
イザ回路、第４図は同上従来回路のスイツチング
トランジスタのエミツタ波形図である。
１３……ノーマルテープ用イコライザ素子、１
４……クロームテープ用イコライザ素子、１５…
…メタルテープ用イコライザ素子、１６，１７，
１８……スイツチングトランジスタ、１９，２０
……ダイオード。
Fig. 1 is a circuit diagram showing an embodiment of an equalizer circuit for a tape recorder, etc. according to the present invention, Fig. 2 is an emitter waveform diagram of a switching transistor of the same circuit, and Fig. 3 is a conventional equalizer circuit for a tape recorder, etc. , FIG. 4 is an emitter waveform diagram of the switching transistor of the conventional circuit. 13... Equalizer element for normal tape, 1
4... Equalizer element for chrome tape, 15...
... Equalizer element for metal tape, 16, 17,
18...Switching transistor, 19, 20
……diode.
Claims (1)
チングトランジスタとを備え、 装着された磁気テープの種類に応じて上記スイ
ツチングトランジスタをオンすることで上記イコ
ライザ素子を動作状態とするテープレコーダ等の
イコライザ回路において、 上記スイツチングトランジスタの出力側にダイ
オードを接続し、 上記スイツチングトランジスタのオン時のコレ
クタ電位が上記ダイオードの順方向電圧となるよ
うにした事を特徴とするテープレコーダ等のイコ
ライザ回路。[Scope of Claim for Utility Model Registration] The equalizer comprises an equalizer element and a switching transistor provided corresponding to the equalizer element, and the equalizer is activated by turning on the switching transistor according to the type of magnetic tape attached. In an equalizer circuit for a tape recorder or the like that puts the device into operation, a diode is connected to the output side of the switching transistor so that the collector potential when the switching transistor is on becomes the forward voltage of the diode. An equalizer circuit for tape recorders, etc., characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9874487U JPS645205U (en) | 1987-06-26 | 1987-06-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9874487U JPS645205U (en) | 1987-06-26 | 1987-06-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS645205U true JPS645205U (en) | 1989-01-12 |
Family
ID=31325275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9874487U Pending JPS645205U (en) | 1987-06-26 | 1987-06-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS645205U (en) |
-
1987
- 1987-06-26 JP JP9874487U patent/JPS645205U/ja active Pending
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