JPH0445301U - - Google Patents
Info
- Publication number
- JPH0445301U JPH0445301U JP8499190U JP8499190U JPH0445301U JP H0445301 U JPH0445301 U JP H0445301U JP 8499190 U JP8499190 U JP 8499190U JP 8499190 U JP8499190 U JP 8499190U JP H0445301 U JPH0445301 U JP H0445301U
- Authority
- JP
- Japan
- Prior art keywords
- coil
- temperature
- magnetic field
- peltier element
- core
- 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.)
- Granted
Links
- 230000005855 radiation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Description
第１図は本考案の一実施例を示す図で第２図は
その制御回路を示すブロツク図、第３図はコアの
透磁率の温度特性を示す図である。
１……コイル、２……コア、３……温度センサ
、４……ペルチエ素子、５……放熱フイン、６…
…断熱材、７……基準電圧、８……比較器、９…
…ドライバ、１０……光磁気記録デイスク、１１
……光ピツクアツプ、１２……ビーム点である。
FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a block diagram showing its control circuit, and FIG. 3 is a diagram showing the temperature characteristics of the magnetic permeability of the core. 1... Coil, 2... Core, 3... Temperature sensor, 4... Peltier element, 5... Heat dissipation fin, 6...
...Insulating material, 7...Reference voltage, 8...Comparator, 9...
... Driver, 10 ... Magneto-optical recording disk, 11
. . . Light pick-up, 12 . . . Beam point.
Claims (1)
のコイルの温度を検出する温度センサと、上記コ
イルを巻いたコアと放熱フインの間に設けたペル
チエ素子とを制御回路によつてペルチエ素子を制
御してコイル及びコアの温度を一定に保つことを
特徴としたバイアス磁界発生装置。 In a magneto-optical recording device, a temperature sensor detects the temperature of a coil for generating a recording/erasing magnetic field, and a Peltier element is provided between a core around which the coil is wound and a heat radiation fin, and the Peltier element is controlled by a control circuit. A bias magnetic field generator characterized by keeping the temperature of the coil and core constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8499190U JPH0718001Y2 (en) | 1990-08-11 | 1990-08-11 | Bias magnetic field generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8499190U JPH0718001Y2 (en) | 1990-08-11 | 1990-08-11 | Bias magnetic field generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0445301U true JPH0445301U (en) | 1992-04-17 |
| JPH0718001Y2 JPH0718001Y2 (en) | 1995-04-26 |
Family
ID=31816166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8499190U Expired - Lifetime JPH0718001Y2 (en) | 1990-08-11 | 1990-08-11 | Bias magnetic field generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0718001Y2 (en) |
-
1990
- 1990-08-11 JP JP8499190U patent/JPH0718001Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0718001Y2 (en) | 1995-04-26 |
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