JPS5843616U - Recording bias oscillation circuit - Google Patents
Recording bias oscillation circuitInfo
- Publication number
- JPS5843616U JPS5843616U JP13719881U JP13719881U JPS5843616U JP S5843616 U JPS5843616 U JP S5843616U JP 13719881 U JP13719881 U JP 13719881U JP 13719881 U JP13719881 U JP 13719881U JP S5843616 U JPS5843616 U JP S5843616U
- Authority
- JP
- Japan
- Prior art keywords
- oscillation circuit
- recording mode
- circuit
- recording
- recording bias
- 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
- Oscillators With Electromechanical Resonators (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の録音バイアス発振回路を示す回路図、第
２図はこの考案に係る録音バイアス発振回路の一実施例
を示す回路図である。
１１・・・・・・発振回路、１２・・・・・・左チヤン
ネル用録音・再生ヘッド、１３・・曲名チャンネル用録
音・再生ヘッド、１４・・・・・・消去ヘッド、１７・
・・・・・電源・ 端子、１８・・・・・・コントロー
ル信号発生回路、２１・・・・・・駆動回路、Ｑ１□・
・・・・・発振用トランジスタ、Ｒ２□〜Ｒ２３・・・
・・・抵抗、Ｃ２１・・・・・・コンデンサ。FIG. 1 is a circuit diagram showing a conventional recording bias oscillation circuit, and FIG. 2 is a circuit diagram showing an embodiment of the recording bias oscillation circuit according to this invention. 11... Oscillation circuit, 12... Recording/playback head for left channel, 13... Recording/playback head for song title channel, 14... Erase head, 17...
...Power supply/terminal, 18...Control signal generation circuit, 21...Drive circuit, Q1□...
...Oscillation transistor, R2□~R23...
...Resistor, C21...Capacitor.
Claims (1)
、録音モード時に所定の電圧レベルの信号を発生するコ
ントロール信号発生回路と、この−コントロール信号発
生回路の出力信号を用いて前記発振回路を構成する発振
素子を録音モード時はオンせしめ録音モード時以外のと
きは、オフせしめるように駆動する駆動回路とを具備し
たことを特徴とする録音バイアス発振回路。an oscillation circuit to which a power supply voltage is supplied even when not in recording mode; a control signal generation circuit that generates a signal at a predetermined voltage level in recording mode; and an output signal of this control signal generation circuit to operate the oscillation circuit. 1. A recording bias oscillation circuit comprising: a drive circuit that drives a constituent oscillation element to be turned on during a recording mode and turned off when not in a recording mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13719881U JPS5843616U (en) | 1981-09-16 | 1981-09-16 | Recording bias oscillation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13719881U JPS5843616U (en) | 1981-09-16 | 1981-09-16 | Recording bias oscillation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5843616U true JPS5843616U (en) | 1983-03-24 |
Family
ID=29930489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13719881U Pending JPS5843616U (en) | 1981-09-16 | 1981-09-16 | Recording bias oscillation circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5843616U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59185850A (en) * | 1983-04-07 | 1984-10-22 | Mitsubishi Heavy Ind Ltd | 2-cycle internal-combustion engine |
-
1981
- 1981-09-16 JP JP13719881U patent/JPS5843616U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59185850A (en) * | 1983-04-07 | 1984-10-22 | Mitsubishi Heavy Ind Ltd | 2-cycle internal-combustion engine |
| JPH0351897B2 (en) * | 1983-04-07 | 1991-08-08 | Mitsubishi Heavy Ind Ltd |
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