JPS5814214U - magnetic recording and reproducing device - Google Patents
magnetic recording and reproducing deviceInfo
- Publication number
- JPS5814214U JPS5814214U JP10637681U JP10637681U JPS5814214U JP S5814214 U JPS5814214 U JP S5814214U JP 10637681 U JP10637681 U JP 10637681U JP 10637681 U JP10637681 U JP 10637681U JP S5814214 U JPS5814214 U JP S5814214U
- Authority
- JP
- Japan
- Prior art keywords
- reproducing device
- magnetic recording
- transistor
- during recording
- control transistor
- 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
Landscapes
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図、第２図は従来例を示す回路図、第３図は本考案
の一実施例を示す回路図、第４図ａ、 ｂは従来例と
本考案の実施例との発振出力波形の比較図である。
１・・・・・・バイアス発振回路、Ｌ・・・・・・発振
コイル、Ｑ□・・・・・・トランジスタ、Ｅ・・・・・
・電源、Ｑ３・・・・・・制御用トランジスタ、３・・
・・・・スイッチ。Figures 1 and 2 are circuit diagrams showing a conventional example, Figure 3 is a circuit diagram showing an embodiment of the present invention, and Figures 4a and b are oscillation output waveforms of the conventional example and the embodiment of the present invention. FIG. 1...Bias oscillation circuit, L...Oscillation coil, Q□...Transistor, E...
・Power supply, Q3... Control transistor, 3...
····switch.
Claims (1)
有し、前記トランジスタのベースと接地間に制御用トラ
ンジスタのコレクタとエミッタを接続し、該制御用トラ
ンジスタのベースに録音時に開放し、かつその録音時以
外の状態では閉じるスイッチを介して電源を供給可能と
し、録音時のみ前記制御用トランジスタを非導通状態と
してバイアス発振回路を動作させるように構成した磁気
記録再生装置。It has a bias oscillation circuit comprising an oscillation coil and a transistor, the collector and emitter of a control transistor are connected between the base of the transistor and ground, the base of the control transistor is open during recording, and A magnetic recording/reproducing device configured such that power can be supplied through a switch that is closed during recording, and the bias oscillation circuit is operated with the control transistor in a non-conducting state only during recording.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10637681U JPS5814214U (en) | 1981-07-16 | 1981-07-16 | magnetic recording and reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10637681U JPS5814214U (en) | 1981-07-16 | 1981-07-16 | magnetic recording and reproducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5814214U true JPS5814214U (en) | 1983-01-28 |
Family
ID=29900863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10637681U Pending JPS5814214U (en) | 1981-07-16 | 1981-07-16 | magnetic recording and reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5814214U (en) |
-
1981
- 1981-07-16 JP JP10637681U patent/JPS5814214U/en active Pending
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