JPS5883851U - Transmission signal source device - Google Patents
Transmission signal source deviceInfo
- Publication number
- JPS5883851U JPS5883851U JP17825881U JP17825881U JPS5883851U JP S5883851 U JPS5883851 U JP S5883851U JP 17825881 U JP17825881 U JP 17825881U JP 17825881 U JP17825881 U JP 17825881U JP S5883851 U JPS5883851 U JP S5883851U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- circuit
- output
- variable gain
- source device
- 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
- 230000005540 biological transmission Effects 0.000 title claims 4
- 238000001514 detection method Methods 0.000 claims 5
- 230000010355 oscillation Effects 0.000 claims 2
- 238000012795 verification Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Dc Digital Transmission (AREA)
- Small-Scale Networks (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Transmitters (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図および第２図は従来説明に用いるためのもので、
第１図は送信用信号源装置の概略回路図、第２図はその
作用を説明するための特性図、第３図および第４図は本
考案の一実施例を示すもので、第３図は送信用信号源装
置の回路構成図、第４図は同装置の作用説明に用いるた
めの特性図である。
１０・・・・・・電圧制御可変利得増幅器（増幅器）、
２０・・・・・・抵抗器、３０・・・・・・電流検出−
１４０・・・・・・電圧検出器、３１．４１・・・・・
・整流器、５０・・・・・・演算回路、５１・・・・・
・基準電源、６０・・・・・・比較回路、６１・・・・
・・コンパレータ、６２・・・・・・積分器。Figures 1 and 2 are for use in explaining the conventional art.
FIG. 1 is a schematic circuit diagram of a transmitting signal source device, FIG. 2 is a characteristic diagram for explaining its operation, FIGS. 3 and 4 show an embodiment of the present invention, and FIG. 4 is a circuit configuration diagram of the transmitting signal source device, and FIG. 4 is a characteristic diagram used to explain the operation of the device. 10... Voltage controlled variable gain amplifier (amplifier),
20...Resistor, 30...Current detection-
140... Voltage detector, 31.41...
- Rectifier, 50... Arithmetic circuit, 51...
・Reference power supply, 60... Comparison circuit, 61...
...Comparator, 62...Integrator.
Claims (2)
で増幅したのち実内部インピーダンスを規定する抵抗器
を介して送出する送信用信号源装置において、発振出力
を増幅する電圧制御可変利得増幅器と、この電圧制御可
変利得増幅器の出力電流の大きさを検出する電流検出回
路と、前記電圧制御可変利得増幅器の出力電圧の大きさ
を通信線に対する出力端部にて検出する電圧検出回路と
、前記電流検出回路お゛よび前記電圧検印回路の出力に
基づき見かけ上の内部インピーダンスが前記実内部イン
ピーダンスより大なる所定値となるよう前記電圧制御可
変利得回路の利得を制御する制御回路とを具備したこと
を特徴とする送信用信号源装置。(1) A voltage-controlled variable gain amplifier that amplifies the oscillation output in a transmission signal source device that amplifies the oscillation output with an amplifier and then sends it out via a resistor that defines the actual internal impedance to a communication line connected to a load. a current detection circuit that detects the magnitude of the output current of the voltage-controlled variable gain amplifier; and a voltage detection circuit that detects the magnitude of the output voltage of the voltage-controlled variable gain amplifier at an output end with respect to the communication line; and a control circuit that controls the gain of the voltage control variable gain circuit so that the apparent internal impedance becomes a predetermined value larger than the actual internal impedance based on the outputs of the current detection circuit and the voltage verification circuit. A transmission signal source device characterized by:
ある基準電圧から減算しこの減算値を前記内部インピー
ダンスに相当する値で除算する演算回路と、この演算回
路の出力値を電流検出回路の出力値と比較してその差を
求めこの差を零にすべく電圧制御可変利得増幅器の利得
を制御する比較回路とからなることを特徴とする実用新
案登録請求の範囲第（１）項記載の送信用信号源装置。 −(2) An arithmetic circuit in which the control circuit subtracts the output value of the voltage detection circuit from a preset reference voltage and divides this subtraction value by a value corresponding to the internal impedance, and a current detection circuit that detects the output value of the arithmetic circuit. Utility model registration claim (1) comprising a comparison circuit that compares the output value of the circuit to determine the difference and controls the gain of the voltage-controlled variable gain amplifier in order to reduce this difference to zero. The transmission signal source device described. −
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17825881U JPS5883851U (en) | 1981-11-30 | 1981-11-30 | Transmission signal source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17825881U JPS5883851U (en) | 1981-11-30 | 1981-11-30 | Transmission signal source device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5883851U true JPS5883851U (en) | 1983-06-07 |
Family
ID=29972889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17825881U Pending JPS5883851U (en) | 1981-11-30 | 1981-11-30 | Transmission signal source device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5883851U (en) |
-
1981
- 1981-11-30 JP JP17825881U patent/JPS5883851U/en active Pending
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