JPS5988961U - Tuning voltage generation circuit for electronic tuner - Google Patents
Tuning voltage generation circuit for electronic tunerInfo
- Publication number
- JPS5988961U JPS5988961U JP18542982U JP18542982U JPS5988961U JP S5988961 U JPS5988961 U JP S5988961U JP 18542982 U JP18542982 U JP 18542982U JP 18542982 U JP18542982 U JP 18542982U JP S5988961 U JPS5988961 U JP S5988961U
- Authority
- JP
- Japan
- Prior art keywords
- tuning voltage
- electronic tuner
- generation circuit
- voltage generation
- converter
- 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
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Noise Elimination (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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の一実施例を示すブロック構成図、第２
図は要部の回路構成図である。
１・・・チューナ、２・・・切換回路、３・・・ＤＣ−
ＤＣコンバータ、４・・・ＬＰＦ、 ５・・・プリスケ
ーラ＆コントローラ、６・・・比較回路１．７・・・オ
ペアンプ、Ｒ□。
Ｒ２・・・抵抗、Ｑｌ・・・トランジスタ、Ｄ３．Ｄ２
・・・ダイオード。Fig. 1 is a block diagram showing one embodiment of the present invention;
The figure is a circuit configuration diagram of the main part. 1...Tuner, 2...Switching circuit, 3...DC-
DC converter, 4...LPF, 5...Prescaler & controller, 6... Comparison circuit 1.7... Operational amplifier, R□. R2...Resistor, Ql...Transistor, D3. D2
···diode.
Claims (1)
してＤＣ−ＤＣコンバータを用いるものにおいて、チュ
ーニング電圧が所定値の上下によってＤＣ−ＤＣコンバ
ータを経由して電圧を与えるか、バイパスさせるかを切
換える切換回路を設けたことを特徴とする電子チューナ
のチューニング電圧発生回路。In an electronic tuner that uses a DC-DC converter as a power supply for tuning voltage, a switching circuit is provided to switch whether to apply the voltage via the DC-DC converter or bypass it depending on whether the tuning voltage rises or falls above or below a predetermined value. A tuning voltage generation circuit for an electronic tuner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18542982U JPS5988961U (en) | 1982-12-08 | 1982-12-08 | Tuning voltage generation circuit for electronic tuner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18542982U JPS5988961U (en) | 1982-12-08 | 1982-12-08 | Tuning voltage generation circuit for electronic tuner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5988961U true JPS5988961U (en) | 1984-06-16 |
| JPS6333383Y2 JPS6333383Y2 (en) | 1988-09-06 |
Family
ID=30400787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18542982U Granted JPS5988961U (en) | 1982-12-08 | 1982-12-08 | Tuning voltage generation circuit for electronic tuner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5988961U (en) |
-
1982
- 1982-12-08 JP JP18542982U patent/JPS5988961U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6333383Y2 (en) | 1988-09-06 |
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