JPS6440914U - - Google Patents
Info
- Publication number
- JPS6440914U JPS6440914U JP13494687U JP13494687U JPS6440914U JP S6440914 U JPS6440914 U JP S6440914U JP 13494687 U JP13494687 U JP 13494687U JP 13494687 U JP13494687 U JP 13494687U JP S6440914 U JPS6440914 U JP S6440914U
- Authority
- JP
- Japan
- Prior art keywords
- attenuator
- main
- attenuation
- sub
- switch
- 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
- 238000010586 diagram Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Attenuators (AREA)
Description
第１図は本考案に係る減衰量切替装置の一実施
例を示した図、第２図と第６図は主アツテネータ
と副アツテネータとスイツチの動作時期を示す図
、第３図はアツテネータをブロツクとして示した
図、第４図は機械的減衰切替を用いたアツテネー
タの具体例を示す図、第５図は半導体減衰切替を
用いたアツテネータの構成例を示す図である。
１……主アツテネータ、２……副アツテネータ
、３……制御回路、Ｕ２……バツフアアンプ、Ｓ
Ｗ……スイツチ。
Fig. 1 is a diagram showing an embodiment of the attenuation amount switching device according to the present invention, Figs. 2 and 6 are diagrams showing the operation timing of the main attenuator, sub-attenuator, and switch, and Fig. 3 is a diagram showing the attenuation switching device according to the present invention. FIG. 4 is a diagram showing a specific example of an attenuator using mechanical attenuation switching, and FIG. 5 is a diagram showing a configuration example of an attenuator using semiconductor attenuation switching. 1... Main attenuator, 2... Sub attenuator, 3... Control circuit, U 2 ... Buffer amplifier, S
W...Switch.
Claims (1)
主アツテネータと等しい減衰量に設定できる副ア
ツテネータと、 この副アツテネータの出力信号を導入する利得
１のバツフアアンプと、 このバツフアアンプの出力端子と、主アツテネ
ータの出力端子間に設けられるスイツチＳＷと、 主アツテネータで現在設定している減衰量、又
は主アツテネータでこれから設定しようとしてい
る減衰量と同じ値に副アツテネータを制御した後
、スイツチＳＷをオンとし、このスイツチがオン
の期間に主アツテネータの減衰量切替動作を行わ
しめる制御回路と、 を備えたことを特徴とする減衰量切替装置。[Claims for Utility Model Registration] A main attenuator using mechanical attenuation switching, a sub-attenuator whose input section is common to the input section of the main attenuator and can be set to the same attenuation amount as the main attenuator, and an output signal of this sub-attenuator. A buffer amplifier with a gain of 1 that introduces the power, a switch SW installed between the output terminal of this buffer amplifier and the output terminal of the main attenuator, and the attenuation currently set in the main attenuator or the attenuation that is about to be set in the main attenuator. a control circuit that turns on a switch SW after controlling a sub-attenuator to the same value as the attenuator, and performs attenuation switching operation of the main attenuator while the switch is on; Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13494687U JPH051141Y2 (en) | 1987-09-03 | 1987-09-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13494687U JPH051141Y2 (en) | 1987-09-03 | 1987-09-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6440914U true JPS6440914U (en) | 1989-03-10 |
| JPH051141Y2 JPH051141Y2 (en) | 1993-01-13 |
Family
ID=31394145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13494687U Expired - Lifetime JPH051141Y2 (en) | 1987-09-03 | 1987-09-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH051141Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05118168A (en) * | 1991-10-30 | 1993-05-14 | Ohbayashi Corp | Structure of insulating membrane roof and manufacture thereof |
-
1987
- 1987-09-03 JP JP13494687U patent/JPH051141Y2/ja not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05118168A (en) * | 1991-10-30 | 1993-05-14 | Ohbayashi Corp | Structure of insulating membrane roof and manufacture thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH051141Y2 (en) | 1993-01-13 |
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