JPH03110605U - - Google Patents
Info
- Publication number
- JPH03110605U JPH03110605U JP1830290U JP1830290U JPH03110605U JP H03110605 U JPH03110605 U JP H03110605U JP 1830290 U JP1830290 U JP 1830290U JP 1830290 U JP1830290 U JP 1830290U JP H03110605 U JPH03110605 U JP H03110605U
- Authority
- JP
- Japan
- Prior art keywords
- transistors
- transformer
- oscillation circuit
- transistor
- collector
- 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 8
- 239000003990 capacitor Substances 0.000 claims 2
- 238000004804 winding Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Description
第１図はこの考案に係るテープレコーダのバイ
アス発振回路の実施例を示す回路図、第２図は従
来の実施例の回路図である。
主な符号の説明、Ａ……発振回路、１……発振
トランス、２，３……トランジスタ、７……電源
、１２……発振器、１３……分周器。
FIG. 1 is a circuit diagram showing an embodiment of a bias oscillation circuit for a tape recorder according to this invention, and FIG. 2 is a circuit diagram of a conventional embodiment. Explanation of main symbols: A...Oscillation circuit, 1...Oscillation transformer, 2, 3...Transistor, 7...Power source, 12...Oscillator, 13...Frequency divider.
Claims (1)
、前記２つのトランジスタの一方のトランジスタ
のコレクタは前記トランスの巻き始め側に接続し
、他方のトランジスタのコレクタは前記トランス
の巻き終り側に接続し、一方のトランジスタのベ
ースと他方のトランジスタのコレクタとは抵抗器
とコンデンサとの並列回路を介してそれぞれ接続
し、２つのトランジスタのベース間にはコンデン
サを接続し、トランスのセンタータツプと前記２
つのトランジスタのエミツタ間に電源を接続する
ようにしたテープレコーダのバイアス発振回路に
おいて、 前記２つのトランジスタのベースに所定の周波
数の信号を注入し、この信号で前記バイアス発振
回路の発振周波数をロツクするように構成したこ
とを特徴とするテープレコーダのバイアス発振回
路。 ２ ２つのトランジスタに注入する信号はマイク
ロコンピユータのクロツクから得るように構成し
たことを特徴とする請求項１記載のテープレコー
ダのバイアス発振回路。[Claims for Utility Model Registration] 1 Consisting of a transformer and two transistors, the collector of one of the two transistors is connected to the winding start side of the transformer, and the collector of the other transistor is connected to the winding start side of the transformer. The base of one transistor and the collector of the other transistor are connected through a parallel circuit of a resistor and a capacitor, and a capacitor is connected between the bases of the two transistors, and the center of the transformer is connected to the terminal side. Tap and the above 2
In a tape recorder bias oscillation circuit in which a power supply is connected between the emitters of two transistors, a signal of a predetermined frequency is injected into the bases of the two transistors, and this signal locks the oscillation frequency of the bias oscillation circuit. A bias oscillation circuit for a tape recorder, characterized in that it is configured as follows. 2. The bias oscillation circuit for a tape recorder according to claim 1, wherein the signals injected into the two transistors are obtained from a clock of a microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1830290U JPH03110605U (en) | 1990-02-27 | 1990-02-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1830290U JPH03110605U (en) | 1990-02-27 | 1990-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03110605U true JPH03110605U (en) | 1991-11-13 |
Family
ID=31521465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1830290U Pending JPH03110605U (en) | 1990-02-27 | 1990-02-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03110605U (en) |
-
1990
- 1990-02-27 JP JP1830290U patent/JPH03110605U/ja active Pending
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