JPH0292236U - - Google Patents
Info
- Publication number
- JPH0292236U JPH0292236U JP16989U JP16989U JPH0292236U JP H0292236 U JPH0292236 U JP H0292236U JP 16989 U JP16989 U JP 16989U JP 16989 U JP16989 U JP 16989U JP H0292236 U JPH0292236 U JP H0292236U
- Authority
- JP
- Japan
- Prior art keywords
- klystron
- output
- becomes stable
- correction circuit
- amplifier
- 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
- 230000005284 excitation Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 1
Description
図は本考案の一実施例に係るテレビジヨン送信
機のブロツク図である。
１，２…ＡＧＣ回路、３…非直線性補正回路、
５…励振増幅器、６…クライストロン増幅器、９
，１１…方向性結合器、１０，１２…検波器、１
３，１４…制御回路、１５…切替え制御回路。
The figure is a block diagram of a television transmitter according to an embodiment of the present invention. 1, 2...AGC circuit, 3...Nonlinearity correction circuit,
5... Excitation amplifier, 6... Klystron amplifier, 9
, 11... Directional coupler, 10, 12... Detector, 1
3, 14...control circuit, 15...switching control circuit.
Claims (1)
おいて、クライストロンの動作が安定となるまで
の一定時間、クライストロン出力電力を一定とな
るようにクライストロン用励振増幅器の前段に設
けた非直線性補正回路の出力を可変すると共に、
そのクライストロンの動作が安定となつた時は、
自動的に上記励振増幅器の出力を常に一定にする
ため上記非直線性補正回路の出力を可変して５０
Ｈｚ〜３６０Ｈｚの周波数成分に対しての応答速
度を十分に遅くした第１のＡＧＣ回路と、クライ
ストロンの動作が安定となつた時、上記励振増幅
器の後段に設けたクライストロン増幅器の５０Ｈ
ｚ〜３６０Ｈｚの周波数成分に対する出力変動分
に応じて上記非直線性補正回路の入力レベルを可
変する第２のＡＧＣ回路と、これら第１及び第２
のＡＧＣ回路にそれぞれ供給する高周波信号を切
替える切替え制御回路とを具備することを特徴と
するテレビジヨン送信機。 In a television transmitter using a klystron, the output of the non-linearity correction circuit provided in the front stage of the klystron excitation amplifier is varied so that the klystron output power remains constant for a certain period of time until the klystron's operation becomes stable. With,
When the klystron's operation becomes stable,
In order to automatically keep the output of the excitation amplifier constant, the output of the nonlinearity correction circuit is varied to 50
The first AGC circuit has a sufficiently slow response speed to frequency components from Hz to 360Hz, and when the operation of the klystron becomes stable, the 50H of the klystron amplifier installed after the excitation amplifier is
a second AGC circuit that varies the input level of the nonlinearity correction circuit according to output fluctuations with respect to frequency components of 360 Hz to 360 Hz;
1. A television transmitter comprising: a switching control circuit for switching a high frequency signal supplied to each of the AGC circuits;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16989U JPH0292236U (en) | 1989-01-06 | 1989-01-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16989U JPH0292236U (en) | 1989-01-06 | 1989-01-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0292236U true JPH0292236U (en) | 1990-07-23 |
Family
ID=31198961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16989U Pending JPH0292236U (en) | 1989-01-06 | 1989-01-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0292236U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05218885A (en) * | 1992-01-31 | 1993-08-27 | Nec Corp | Transmitting power controller |
-
1989
- 1989-01-06 JP JP16989U patent/JPH0292236U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05218885A (en) * | 1992-01-31 | 1993-08-27 | Nec Corp | Transmitting power controller |
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