JPS56157109A - Characteristic stabilizing circuit - Google Patents
Characteristic stabilizing circuitInfo
- Publication number
- JPS56157109A JPS56157109A JP6010280A JP6010280A JPS56157109A JP S56157109 A JPS56157109 A JP S56157109A JP 6010280 A JP6010280 A JP 6010280A JP 6010280 A JP6010280 A JP 6010280A JP S56157109 A JPS56157109 A JP S56157109A
- Authority
- JP
- Japan
- Prior art keywords
- gain
- change
- compensation
- circuit
- previously
- 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
- 230000000087 stabilizing effect Effects 0.000 title abstract 2
- 238000012544 monitoring process Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
Landscapes
- Radio Relay Systems (AREA)
- Control Of Amplification And Gain Control (AREA)
- Transmitters (AREA)
Abstract
PURPOSE:To obtain a stabilizing circuit for the machinery that requires a high stability like EIRP sent from a ground station of satellite communication, by always monitoring a change of the circumferential conditions and compensating the characteristics based on the degree of compensation stored previously. CONSTITUTION:The signal input A is supplied to an amplifier 2 via a characteristic compensator (variable attenuator for gain compensation) 1 to deliver an amplified signal output B. A logical circuit 4 reads out the information stored in the storage circuits 61-6n based on the information of the detectors 51-5n and sends the output signal to a driving circuit 3. Based on this output signal, the circuit 3 controls the compensator 1. The detectors 51-5n thus constituted detect the temperature that causes a change of the circumferential conditions. The circuits 61- 6n examine previously a change of characteristic to a change of conditions and store the degree of compensation. The gain of an amplifier having a gain as shown by a solid line 21 is controlled previously so that a change of gain turns into a dotted line 22 when varying from the reference value to 0.2dB. Thus the gain is suppressed down to <= reference value + or -0.2dB.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6010280A JPS56157109A (en) | 1980-05-07 | 1980-05-07 | Characteristic stabilizing circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6010280A JPS56157109A (en) | 1980-05-07 | 1980-05-07 | Characteristic stabilizing circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56157109A true JPS56157109A (en) | 1981-12-04 |
Family
ID=13132392
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6010280A Pending JPS56157109A (en) | 1980-05-07 | 1980-05-07 | Characteristic stabilizing circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56157109A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07120903B2 (en) * | 1987-03-09 | 1995-12-20 | モトローラ・インコーポレーテッド | Method and apparatus for automatically ensuring safe operating temperature for electronic devices |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52110555A (en) * | 1976-03-15 | 1977-09-16 | Nec Corp | Automatic volume control system for car mounting audio device |
-
1980
- 1980-05-07 JP JP6010280A patent/JPS56157109A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52110555A (en) * | 1976-03-15 | 1977-09-16 | Nec Corp | Automatic volume control system for car mounting audio device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07120903B2 (en) * | 1987-03-09 | 1995-12-20 | モトローラ・インコーポレーテッド | Method and apparatus for automatically ensuring safe operating temperature for electronic devices |
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