JPS604026U - tuning device - Google Patents
tuning deviceInfo
- Publication number
- JPS604026U JPS604026U JP9410883U JP9410883U JPS604026U JP S604026 U JPS604026 U JP S604026U JP 9410883 U JP9410883 U JP 9410883U JP 9410883 U JP9410883 U JP 9410883U JP S604026 U JPS604026 U JP S604026U
- Authority
- JP
- Japan
- Prior art keywords
- diode
- tuning device
- transistor
- tuning
- voltage
- 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
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図は受信バンドの特に下側の受信周波数が゛制限さ
れるような従来の同調装置を示す回路図である。第２図
はこの考案の一実施例の同調装置を示す回路図であり、
特に受信バンドの下側の受信周波数が制限されるような
同調装置を示している。
第３図はこの考案の他の実施例の同調装置を示す回路図
であり、特に受信バンドの上側の受信周波数が制限され
るような同調装置の一例を示している。FIG. 1 is a circuit diagram illustrating a conventional tuning device in which the reception frequency, particularly at the lower end of the reception band, is limited. FIG. 2 is a circuit diagram showing a tuning device according to an embodiment of this invention.
In particular, a tuning device is shown in which the reception frequencies at the lower end of the reception band are limited. FIG. 3 is a circuit diagram showing a tuning device according to another embodiment of the present invention, and particularly shows an example of a tuning device in which the reception frequency on the upper side of the reception band is limited.
Claims (4)
調しないように構成される同調装置であって、チューニ
ング電圧を発生する手段と、 前記チューニング電圧に応じてその受信周波数が変化す
るチューナ、 所定の値の電圧を発生するための電圧発生回路、 そのベースに前記電圧発生回路の出力を受けてコレクタ
接地回路を構成するトランジスタ、および 前記トランジスタのエミッタと前記チューニング電圧の
供給経路との間に介挿される第１のダイオードを備え、 さらに、前記電圧発生回路中に第２のダイオードを設け
、前記トランジスタと前記第１のダイオードの温度特性
が同調装置に与える影響を前記第２のダイオードの温度
特性で打消すようにしたことを特徴とする、同調装置。(1) A tuning device configured not to tune to frequencies outside a predetermined frequency band, comprising means for generating a tuning voltage, and a tuner whose reception frequency changes according to the tuning voltage; a voltage generating circuit for generating a voltage of a predetermined value; a transistor having a base thereof receiving an output of the voltage generating circuit and forming a common collector circuit; and between an emitter of the transistor and a supply path for the tuning voltage. further comprising a second diode inserted in the voltage generating circuit, the influence of the temperature characteristics of the transistor and the first diode on the tuning device is determined by the temperature of the second diode; A tuning device characterized by canceling the characteristics.
と、 前記第１のダイオードの温度特性を打消すためのダイオ
ードとを含む、実用新案登録請求の範囲第１項記載の同
調装置。(2) The second diode includes: a diode for canceling the temperature characteristics of the transistor; and a diode for canceling the temperature characteristics of the first diode. Tuning device as described.
波数には同調しないように構成される同調装置であって
、 前記トランジスタの極性はＮＰＮ形に選ばれ、前記第１
のダイオードは、そのアノードが前記トランジスタのエ
ミッタに接続され、そのカソードが前記チューニング電
圧の供給経路に接続される、実用新案登録請求の範囲第
１項または第２項記載の同調装置。(3) The tuning device is a tuning device configured not to tune to a frequency lower than a predetermined frequency, and the polarity of the transistor is selected as NPN type, and the first
3. The tuning device according to claim 1, wherein the diode has an anode connected to the emitter of the transistor and a cathode connected to the tuning voltage supply path.
波数には同調しないように構成される同調装置であって
、 前記トランジスタの極性はＰＮＰ形に選ばれ、前記第１
のダイオードは、そのカソードが前記トランジスタのエ
ミッタに接続され、そのアノードが前記チューニング電
圧の供給経路に接続される、実用新案登録請求の範囲第
１項または第２項記載の同調装置。(4) The tuning device is a tuning device configured not to tune to a frequency higher than a predetermined wave number, and the polarity of the transistor is selected as PNP type, and the first
3. The tuning device according to claim 1, wherein the diode has its cathode connected to the emitter of the transistor and its anode connected to the tuning voltage supply path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9410883U JPS604026U (en) | 1983-06-17 | 1983-06-17 | tuning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9410883U JPS604026U (en) | 1983-06-17 | 1983-06-17 | tuning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS604026U true JPS604026U (en) | 1985-01-12 |
Family
ID=30225429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9410883U Pending JPS604026U (en) | 1983-06-17 | 1983-06-17 | tuning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS604026U (en) |
-
1983
- 1983-06-17 JP JP9410883U patent/JPS604026U/en active Pending
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