JPS61129494U - - Google Patents
Info
- Publication number
- JPS61129494U JPS61129494U JP1985013553U JP1355385U JPS61129494U JP S61129494 U JPS61129494 U JP S61129494U JP 1985013553 U JP1985013553 U JP 1985013553U JP 1355385 U JP1355385 U JP 1355385U JP S61129494 U JPS61129494 U JP S61129494U
- Authority
- JP
- Japan
- Prior art keywords
- speed
- constant
- tape
- motor
- tape recorder
- 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 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
Description
第１図はこの考案の一実施例によるモータ駆動
回路、第２図はメカニズム負荷の温度特性を示す
図、第３図ａ，ｂは金属被膜を使用した場合の定
速および高速のテープスピート温度特性を示す図
、第３図ｃ，ｄはカーボン抵抗を使用した場合の
定速および高速のテープスピード温度特性を示す
図、第４図はこの実施例による抵抗値とテープス
ピードの関係を示す図、第５図はカーボンと金属
被膜の温度係数の差を示す図である。
１……基準電圧設定回路、２……モータ回転数
設定回路、３……コンパレータ、４……モータ電
圧検出回路、５……出力トランジスタ、６……制
御用パワートランジスタ、７……モータ、Ｒ１…
…定速設定用抵抗、Ｒ２……高速設定用抵抗。
Figure 1 is a motor drive circuit according to an embodiment of this invention, Figure 2 is a diagram showing the temperature characteristics of a mechanical load, and Figures 3a and b are tape speed temperatures at constant speed and high speed when using a metal coating. Figures 3(c) and 3(d) are diagrams showing the tape speed temperature characteristics at constant speed and high speed when carbon resistors are used, and Figure 4 is a diagram showing the relationship between resistance value and tape speed according to this example. , FIG. 5 is a diagram showing the difference in temperature coefficient between carbon and metal coating. DESCRIPTION OF SYMBOLS 1... Reference voltage setting circuit, 2... Motor rotation speed setting circuit, 3... Comparator, 4... Motor voltage detection circuit, 5... Output transistor, 6... Control power transistor, 7... Motor, R 1 ...
...Resistance for constant speed setting, R2 ...Resistor for high speed setting.
Claims (1)
少なくとも録音機能を有するテープデツキとを同
一筐体内に備え、定速コピーおよび高速コピーが
可能なテープレコーダにおいて、前記テープレコ
ーダのキヤプスタンモータの駆動用モータのモー
タ回転数設定回路に、定速時と高速時に各々温度
係数の異なる抵抗素子を切換えて接続することを
特徴とするキヤプスタンモータの駆動回路。 a tape deck having at least a playback function;
In a tape recorder that is equipped with at least a tape deck having a recording function in the same housing and is capable of constant-speed copying and high-speed copying, a motor rotation speed setting circuit of a driving motor of a capstan motor of the tape recorder has a constant-speed A capstan motor drive circuit characterized by switching and connecting resistance elements each having a different temperature coefficient at high speeds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985013553U JPS61129494U (en) | 1985-01-31 | 1985-01-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985013553U JPS61129494U (en) | 1985-01-31 | 1985-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61129494U true JPS61129494U (en) | 1986-08-13 |
Family
ID=30497669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985013553U Pending JPS61129494U (en) | 1985-01-31 | 1985-01-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61129494U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60249885A (en) * | 1984-05-22 | 1985-12-10 | Mabuchi Motor Co Ltd | Speed controller of dc motor |
-
1985
- 1985-01-31 JP JP1985013553U patent/JPS61129494U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60249885A (en) * | 1984-05-22 | 1985-12-10 | Mabuchi Motor Co Ltd | Speed controller of dc motor |
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