JPH0435205U - - Google Patents
Info
- Publication number
- JPH0435205U JPH0435205U JP7613090U JP7613090U JPH0435205U JP H0435205 U JPH0435205 U JP H0435205U JP 7613090 U JP7613090 U JP 7613090U JP 7613090 U JP7613090 U JP 7613090U JP H0435205 U JPH0435205 U JP H0435205U
- Authority
- JP
- Japan
- Prior art keywords
- modulation coil
- magnetic modulation
- drive circuit
- transistors
- resistor
- 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 7
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Description
第１図は本考案の磁気変調コイル駆動回路の一
実施例を示す回路図、第２図は第１図の回路の動
作を示す信号波形図、第３図は誘起電圧の説明図
、第４図は本考案の他の実施例を示す回路図、第
５図は光磁気記録デイスクの説明図、第６図は従
来の磁気変調コイルの駆動回路図である。
図中、Ｑ５，Ｑ６，Ｑ７，Ｑ８は出力トランジ
スタ、Ｌは磁気変調コイル、Ｔ１は入力端子を示
す。
Fig. 1 is a circuit diagram showing one embodiment of the magnetic modulation coil drive circuit of the present invention, Fig. 2 is a signal waveform diagram showing the operation of the circuit of Fig. 1, Fig. 3 is an explanatory diagram of induced voltage, and Fig. 4 is a diagram showing an example of the magnetic modulation coil drive circuit of the present invention. 5 is a circuit diagram showing another embodiment of the present invention, FIG. 5 is an explanatory diagram of a magneto-optical recording disk, and FIG. 6 is a diagram of a conventional drive circuit for a magnetic modulation coil. In the figure, Q 5 , Q 6 , Q 7 , and Q 8 are output transistors, L is a magnetic modulation coil, and T 1 is an input terminal.
Claims (1)
源ラインに接続されている異なる導電型式の第１
、及び第２のトランジスタと、前記第１及び第２
のトランジスタのベースに変調データを入力する
ドライブ回路と、前記共通接続されたエミツタに
接続されている抵抗と磁気変調コイルからなる負
荷回路を備え、前記抵抗と磁気変調コイルの接続
点の電位が前記第１及び第２のトランジスタのベ
ース側に正帰還されるように構成したことを特徴
とする磁気変調コイル駆動回路。 The first type is of different conductivity type, with the emitters connected in common and the collectors respectively connected to the power supply line.
, and a second transistor, and the first and second transistors.
a drive circuit that inputs modulation data to the base of the transistor, and a load circuit consisting of a resistor and a magnetic modulation coil connected to the commonly connected emitter, and the potential at the connection point of the resistor and the magnetic modulation coil is set to the 1. A magnetic modulation coil drive circuit configured to provide positive feedback to the base sides of the first and second transistors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7613090U JPH0435205U (en) | 1990-07-19 | 1990-07-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7613090U JPH0435205U (en) | 1990-07-19 | 1990-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0435205U true JPH0435205U (en) | 1992-03-24 |
Family
ID=31617328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7613090U Pending JPH0435205U (en) | 1990-07-19 | 1990-07-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0435205U (en) |
-
1990
- 1990-07-19 JP JP7613090U patent/JPH0435205U/ja active Pending
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