JPS58156234A - Alc display device of ssb type transceiver - Google Patents
Alc display device of ssb type transceiverInfo
- Publication number
- JPS58156234A JPS58156234A JP57039132A JP3913282A JPS58156234A JP S58156234 A JPS58156234 A JP S58156234A JP 57039132 A JP57039132 A JP 57039132A JP 3913282 A JP3913282 A JP 3913282A JP S58156234 A JPS58156234 A JP S58156234A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- amplifier
- alc
- input
- capacitor
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Transmitters (AREA)
- Measurement Of Current Or Voltage (AREA)
- Transceivers (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、ＳＳＢ式トランシーバにおけるピークホール
ドのＡＬＣ表示装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a peak-hold ALC display device in an SSB type transceiver.
従来、ＳＳＢ （Ｓｉｎｇｌｅ ５ｉｄｅ ｂａｎｄ
）式のトランシーバにおいては、送信時に大入力が供給
された場合歪の発生を防ぐためのＡＬＣ（Ａｕｔｏｍａ
ｔｉｃ ＬｅｖｅｌＣｏｎｔｏｒｏｌ ）回路が設けら
れていて、メータや発光ダイオード等によって監視して
いるが、例えば信号が到来した場合瞬時に大きく変動す
るため、このピークを正確に監視することは極めて難か
しかったＯ
本発明は、かかる点に着目して行なわれたもので、ＡＬ
Ｃ入力とメータ或いは発光ダイオード等の指示回路との
間に、ピークホールド機能を有する回路を介在させて、
瞬時の大入力に対して正確に監視することを可能とした
ＳＳＢ式トランシーバのＡＬＣ表示装置を提供すること
を目的とするものである。Conventionally, SSB (Single 5ide band
) type transceiver uses ALC (Automatic Control) to prevent distortion from occurring when a large input is supplied during transmission.
tic Level Control) circuit is installed and is monitored using meters, light emitting diodes, etc. However, for example, when a signal arrives, it changes greatly instantly, making it extremely difficult to accurately monitor this peak. The present invention was made with attention to this point, and the AL
A circuit with a peak hold function is interposed between the C input and an indicator circuit such as a meter or a light emitting diode,
The object of the present invention is to provide an ALC display device for an SSB transceiver that can accurately monitor instantaneous large inputs.
以下本発明の一実施例を図面について詳細に説明する。An embodiment of the present invention will be described in detail below with reference to the drawings.
ＡＬＣ電圧は、ＦＥＴ （電界効果トランジスタ）など
よりなるスイッチング回路１を経てバッファアンプ２０
入力側＋端子へ結線され、該バッファアンｆ２の出力側
はメータ或いは発光ダイオード等よりなる指示回路３と
結線する。The ALC voltage is passed through a switching circuit 1 consisting of an FET (field effect transistor), etc. to a buffer amplifier 20.
The input side is connected to the + terminal, and the output side of the buffer amplifier f2 is connected to an indicator circuit 3 consisting of a meter, a light emitting diode, or the like.
一方、バッファアンプ２の入力側一端子はコンデンサＣ
１と固定抵抗Ｒ３よりなるピーク値検出用の微分回路５
と結線され、該微分回路５の他端はオペアン７″４の入
力側＋端子へ結線し、該オ被アンプ４の入出力端を固定
抵抗Ｒ５で夫々結線しオペアンプ４の出力側をホールド
時定数回路７を形成する固定抵抗Ｒ６の一端へ結線する
。固定抵抗Ｒ５の他端はダイオード６を介してホールド
時定数回路７を形成するコンデンサＣ３と固定抵抗Ｒ６
との結線個所へ結線すると共に、スイッチング回路１に
結線する。On the other hand, one terminal on the input side of buffer amplifier 2 is connected to capacitor C.
1 and a fixed resistor R3 for peak value detection.
The other end of the differentiating circuit 5 is connected to the input side + terminal of the operational amplifier 7''4, and the input and output ends of the amplifier 4 are connected with a fixed resistor R5 to hold the output side of the operational amplifier 4. It is connected to one end of a fixed resistor R6 that forms a constant circuit 7.The other end of the fixed resistor R5 is connected via a diode 6 to a capacitor C3 and a fixed resistor R6 that form a hold time constant circuit 7.
and the switching circuit 1.
なお、スイッチング回路１とバッファアンプ２の入力側
＋端子とを結んだ個所と接地間にホールド用コンデンサ
８を挿入し、スイッチング回路の他端はＡＬＣ電圧供給
側と結線するが、この結線個所へ固定抵抗９を結んで、
固定抵抗９の他端を接地する。In addition, a hold capacitor 8 is inserted between the point where the switching circuit 1 and the input side + terminal of the buffer amplifier 2 are connected and the ground, and the other end of the switching circuit is connected to the ALC voltage supply side. Connect fixed resistor 9,
The other end of the fixed resistor 9 is grounded.
通常、スイッチング回路ｌはＯＮとなっているので、Ａ
ＬＣ電圧はバッファアンプ２によって増幅されると同時
にホールド用コンデンサ８を充電しながら、指示回路３
のメータＭを振らせる。今、大きな信号電流が到来して
、固定抵抗９に瞬間的に大きなＡＬＣ電圧が加わったと
すると、メータＭもそれに伴なって大きく振れるが、そ
れと同時にバッファアンプ２の出力側から微分回路５へ
該電圧が印加される。Normally, switching circuit l is ON, so A
The LC voltage is amplified by the buffer amplifier 2, and at the same time charges the hold capacitor 8.
Make the meter M move. Now, if a large signal current arrives and a large ALC voltage is instantaneously applied to the fixed resistor 9, the meter M will also swing greatly, but at the same time, a signal will flow from the output side of the buffer amplifier 2 to the differentiating circuit 5. A voltage is applied.
微分回路５に供給された信号電流は、オペアンプ４とダ
イオード６を経てホールド時定数回路７のコンデンサＣ
！より放電し、スイッチング回路１をＯＦＦとする。The signal current supplied to the differentiating circuit 5 passes through the operational amplifier 4 and the diode 6 to the capacitor C of the hold time constant circuit 7.
! The battery is further discharged, and the switching circuit 1 is turned off.
この時、ホールド用コンデンサ８に充電された電荷は、
該コンデンサ８に充電された状態のまま指示回路３のメ
ータＭを保持する。At this time, the charge charged in the hold capacitor 8 is
The meter M of the indicating circuit 3 is held in the state where the capacitor 8 is charged.
次に、信号電流がとだえるとオペアンプ４は初期の状態
に戻り、固定抵抗Ｒ６を通じてコンデンサＣ２を充電し
、一定時間経過の後にスイッチング回路１をＯＮとして
、ホールド用コンデンサ８に充電された電荷は固定抵抗
Ｒ９を通じて放電し、メータＭは下降する。Next, when the signal current stops, the operational amplifier 4 returns to its initial state, charges the capacitor C2 through the fixed resistor R6, and after a certain period of time has passed, the switching circuit 1 is turned on and the charge charged in the hold capacitor 8 is is discharged through the fixed resistor R9, and the meter M falls.
なお、バッファアンプ２によって増幅された信号電流は
、微分回路５へ供給されて微分波形に変換の後にオにプ
ンゾ４で増幅されてホールド時定数回路７に加えられる
が、時定数回路を形成する固定抵抗Ｒ６とコンデンサＣ
３の時定数を、予めピークホールドの監視が容易となる
ように設定する必要がある。Note that the signal current amplified by the buffer amplifier 2 is supplied to the differentiating circuit 5 and converted into a differential waveform, and then amplified by the punzo 4 and applied to the hold time constant circuit 7, which forms a time constant circuit. Fixed resistor R6 and capacitor C
It is necessary to set the time constant 3 in advance so as to facilitate peak hold monitoring.
従って、瞬間的に大きな信号電流が到来しても、指示回
路３のメータＭは、それに相応して瞬間的に振れること
がなく、ホールド時定数回路７の固定抵抗Ｒ＃Ｉとコン
デンサＣＩの時定数で設定する時間だけ、ピーク値を保
持することとなる。Therefore, even if a large signal current momentarily arrives, the meter M of the indicator circuit 3 will not momentarily swing correspondingly, and when the fixed resistor R#I and capacitor CI of the hold time constant circuit 7 The peak value will be held for the time set by the constant.
本発明は上記のように、比較的簡潔な構成によって、ピ
ークホールドの監視を容易ならしめたＡＬＣ表示装置を
提供することが出来る。As described above, the present invention can provide an ALC display device that facilitates peak hold monitoring with a relatively simple configuration.
図面は本発明の一実施例を示す回路図である。
１・・・スイッチング回路、２・・・バッファアンプ、
３・・・指示回路、４・・・オペアンプ、５・・・微分
回路、６・・・ダイオ−、ド、７・・・ホールド時定数
回路、８・・・ホールド用コンデンサ、９・・・固定抵
抗。The drawing is a circuit diagram showing an embodiment of the present invention. 1... Switching circuit, 2... Buffer amplifier,
3... Indication circuit, 4... Operational amplifier, 5... Differential circuit, 6... Diode, de, 7... Hold time constant circuit, 8... Hold capacitor, 9... Fixed resistance.
Claims (1)
示回路との間に、スイッチング回路および互に方向を逆
になるようにバッファアンプとオペアンプを配置し、ノ
クツファアンプの入力側へはホールド用コンデンサとオ
ペアンプの入力側へはピーク値検出用微分回路と該オペ
アンプの出力側へはホールド時定数回路とを夫々設けて
、ピークホールド時においてはピーク値検出用微分回路
と第４アンプを動作させて、前記スイッチング回路をＯ
Ｆとすると共にホールド用コンデンサを充電し、スイッ
チング回路がＯＮのときにはホールド用コンデンサを放
電させるように構成したことを特徴とするＳＳＢ式トラ
ンジスタのＡＬＣ表示装置。A switching circuit and a buffer amplifier and an operational amplifier are arranged in opposite directions between the ALC input and an indicator circuit consisting of a meter or light emitting diode, etc., and a hold capacitor and an operational amplifier input are connected to the input side of the knockout amplifier. A differential circuit for peak value detection is provided on the side, and a hold time constant circuit is provided on the output side of the operational amplifier, and during peak hold, the differential circuit for peak value detection and the fourth amplifier are operated, and the switching circuit O
1. An ALC display device using an SSB type transistor, characterized in that it is configured to charge a hold capacitor at the same time as F and discharge the hold capacitor when a switching circuit is ON.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57039132A JPS58156234A (en) | 1982-03-12 | 1982-03-12 | Alc display device of ssb type transceiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57039132A JPS58156234A (en) | 1982-03-12 | 1982-03-12 | Alc display device of ssb type transceiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58156234A true JPS58156234A (en) | 1983-09-17 |
| JPH0322108B2 JPH0322108B2 (en) | 1991-03-26 |
Family
ID=12544570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57039132A Granted JPS58156234A (en) | 1982-03-12 | 1982-03-12 | Alc display device of ssb type transceiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58156234A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59166527U (en) * | 1983-04-20 | 1984-11-08 | 松下電器産業株式会社 | SSB transmitter |
-
1982
- 1982-03-12 JP JP57039132A patent/JPS58156234A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59166527U (en) * | 1983-04-20 | 1984-11-08 | 松下電器産業株式会社 | SSB transmitter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0322108B2 (en) | 1991-03-26 |
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