JPS6341920U - - Google Patents
Info
- Publication number
- JPS6341920U JPS6341920U JP13622586U JP13622586U JPS6341920U JP S6341920 U JPS6341920 U JP S6341920U JP 13622586 U JP13622586 U JP 13622586U JP 13622586 U JP13622586 U JP 13622586U JP S6341920 U JPS6341920 U JP S6341920U
- Authority
- JP
- Japan
- Prior art keywords
- photocoupler
- operational amplifier
- switching switch
- voltage
- voltage switching
- 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
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Picture Signal Circuits (AREA)
Description
第１図は本考案の一実施例の回路図、第２図は
従来の映像出力調整回路の一例の回路図である。
１……ＦＭ復調回路、２……ローパスフイルタ
、３，４，８１〜８ｎ，１０……抵抗、５……ホ
トカプラ、６……演算増幅器、７……切換スイツ
チ、９……映像出力調整用減衰器。
FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIG. 2 is a circuit diagram of an example of a conventional video output adjustment circuit. 1...FM demodulation circuit, 2...Low pass filter, 3, 4 , 81 to 8n , 10...Resistor, 5...Photocoupler, 6...Operation amplifier, 7...Switch switch, 9...Video output Attenuator for adjustment.
Claims (1)
幅用演算増幅器と、前記ホトカプラのアノード側
に印加される直流電圧を切り替える電圧切換スイ
ツチとを備え、この電圧切換スイツチを切換えて
前記演算増幅の利得を可変することを特徴とする
映像出力調整回路。 A video signal amplification operational amplifier using a photocoupler as a feedback resistor, and a voltage switching switch for switching a DC voltage applied to the anode side of the photocoupler, the voltage switching switch being switched to vary the gain of the operational amplifier. A video output adjustment circuit characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13622586U JPS6341920U (en) | 1986-09-04 | 1986-09-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13622586U JPS6341920U (en) | 1986-09-04 | 1986-09-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6341920U true JPS6341920U (en) | 1988-03-19 |
Family
ID=31039145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13622586U Pending JPS6341920U (en) | 1986-09-04 | 1986-09-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6341920U (en) |
-
1986
- 1986-09-04 JP JP13622586U patent/JPS6341920U/ja active Pending