JPH0323804U - - Google Patents
Info
- Publication number
- JPH0323804U JPH0323804U JP8247589U JP8247589U JPH0323804U JP H0323804 U JPH0323804 U JP H0323804U JP 8247589 U JP8247589 U JP 8247589U JP 8247589 U JP8247589 U JP 8247589U JP H0323804 U JPH0323804 U JP H0323804U
- Authority
- JP
- Japan
- Prior art keywords
- oscillation
- recording bias
- oscillation circuit
- changeover switch
- circuit
- 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
- 230000010355 oscillation Effects 0.000 claims description 9
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Description
第１図は本考案装置の一実施例における回路ブ
ロツク図、第２図は録音バイアス発振回路の出力
特性図、第３図はバイアス電流に対する録音特性
図、第４図は従来装置の回路ブロツク図である。
３…バイアス発振回路、Ｃ１，Ｃ２…共振用コ
ンデンサ、ＳＷ１，ＳＷ２…切換スイツチ、Ｒ…
抵抗。
Fig. 1 is a circuit block diagram of one embodiment of the device of the present invention, Fig. 2 is an output characteristic diagram of the recording bias oscillation circuit, Fig. 3 is a recording characteristic diagram with respect to bias current, and Fig. 4 is a circuit block diagram of the conventional device. It is. 3...Bias oscillation circuit, C1 , C2 ...Resonance capacitor, SW1 , SW2 ...Selector switch, R...
resistance.
Claims (1)
直列接続したコンデンサと第１の切換スイツチと
を並列に接続することにより発振周波数を切換え
るようにしたラジオ受信機付テープレコーダの録
音バイアス発振回路において、 電源供給ラインに並列接続した抵抗と第２の切
換スイツチとを直列に接続することにより供給さ
れる電圧を切換えるようにし、 前記第１と第２の切換スイツチを連動して動作
させると共に前記抵抗は前記切換スイツチを切換
えても発振出力レベルが変化しないような抵抗値
に設定したことを特徴とする録音バイアス発振回
路。[Claims for Utility Model Registration] A tape with a radio receiver that switches the oscillation frequency by connecting in parallel a capacitor connected in series to the output terminal of an oscillation coil connected to an oscillation circuit and a first changeover switch. In the recording bias oscillation circuit of the recorder, the supplied voltage is switched by connecting in series a resistor connected in parallel to the power supply line and a second changeover switch, and the first and second changeover switches are interlocked. 2. A recording bias oscillation circuit, characterized in that the recording bias oscillation circuit is operated as a recording bias oscillator circuit, and the resistor is set to a resistance value such that the oscillation output level does not change even if the changeover switch is changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8247589U JPH0323804U (en) | 1989-07-12 | 1989-07-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8247589U JPH0323804U (en) | 1989-07-12 | 1989-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0323804U true JPH0323804U (en) | 1991-03-12 |
Family
ID=31629322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8247589U Pending JPH0323804U (en) | 1989-07-12 | 1989-07-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0323804U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009289482A (en) * | 2008-05-27 | 2009-12-10 | Panasonic Electric Works Co Ltd | Indicating lamp |
-
1989
- 1989-07-12 JP JP8247589U patent/JPH0323804U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009289482A (en) * | 2008-05-27 | 2009-12-10 | Panasonic Electric Works Co Ltd | Indicating lamp |
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