JPS6378427U - - Google Patents
Info
- Publication number
- JPS6378427U JPS6378427U JP17226686U JP17226686U JPS6378427U JP S6378427 U JPS6378427 U JP S6378427U JP 17226686 U JP17226686 U JP 17226686U JP 17226686 U JP17226686 U JP 17226686U JP S6378427 U JPS6378427 U JP S6378427U
- Authority
- JP
- Japan
- Prior art keywords
- voltage source
- polarity
- resistor
- whose
- reference potential
- 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.)
- Granted
Links
- 230000010355 oscillation Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Superheterodyne Receivers (AREA)
Description
第１図はこの考案による局部発振器の発振周波
数調整装置の１実施例の回路図、第２図は第１図
の回路の等価回路図、第３図は電圧制御発振器の
発振周波数と制御電圧との関係を示す図、第４図
はこの実施例を用いた衛星放送受信用チユーナの
一部ブロツク図である。
２０ａ乃至２０ｅ…直列回路（第１の電圧源）
、２２ａ乃至２２ｅ…第１の抵抗器、２６…出力
端子、２８…第２の抵抗器、３０…切換スイツチ
、｛３２…可変抵抗器、３４…抵抗器｝第２の電
圧源。
Figure 1 is a circuit diagram of one embodiment of the oscillation frequency adjustment device for a local oscillator according to this invention, Figure 2 is an equivalent circuit diagram of the circuit in Figure 1, and Figure 3 shows the oscillation frequency and control voltage of a voltage controlled oscillator. FIG. 4 is a partial block diagram of a satellite broadcast receiving tuner using this embodiment. 20a to 20e...Series circuit (first voltage source)
, 22a to 22e...first resistor, 26...output terminal, 28...second resistor, 30...changeover switch, {32...variable resistor, 34...resistor} second voltage source.
Claims (1)
た第１の電圧源と、第１の電圧源の他方の極性の
電源端子と出力端子との間に接続された第１の抵
抗器と、一方の極性の電源端子が上記基準電位点
に接続された第２の電圧源と、一端が上記出力端
子に接続された第２の抵抗器と、第２の抵抗器の
他端を第２の電圧源の他方の極性の電源端子と上
記基準電位点とに切換接続するように構成された
切換スイツチとを備える局部発振器の発振周波数
調整装置。 a first voltage source whose power terminal of one polarity is connected to a reference potential point; a first resistor connected between the power terminal of the other polarity and the output terminal of the first voltage source; a second voltage source whose power supply terminal of one polarity is connected to the reference potential point, a second resistor whose one end is connected to the output terminal, and whose other end of the second resistor is connected to the second voltage source. An oscillation frequency adjustment device for a local oscillator, comprising a changeover switch configured to switch between a power terminal of the other polarity of the voltage source and the reference potential point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17226686U JPH0354433Y2 (en) | 1986-11-10 | 1986-11-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17226686U JPH0354433Y2 (en) | 1986-11-10 | 1986-11-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6378427U true JPS6378427U (en) | 1988-05-24 |
| JPH0354433Y2 JPH0354433Y2 (en) | 1991-12-02 |
Family
ID=31108653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17226686U Expired JPH0354433Y2 (en) | 1986-11-10 | 1986-11-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0354433Y2 (en) |
-
1986
- 1986-11-10 JP JP17226686U patent/JPH0354433Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0354433Y2 (en) | 1991-12-02 |
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