JPH0471021U - - Google Patents
Info
- Publication number
- JPH0471021U JPH0471021U JP11523990U JP11523990U JPH0471021U JP H0471021 U JPH0471021 U JP H0471021U JP 11523990 U JP11523990 U JP 11523990U JP 11523990 U JP11523990 U JP 11523990U JP H0471021 U JPH0471021 U JP H0471021U
- Authority
- JP
- Japan
- Prior art keywords
- converter
- output
- amplifier
- whose input
- amplification factor
- 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
- 230000003321 amplification Effects 0.000 claims 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 239000013256 coordination polymer Substances 0.000 description 1
Description
第１図はこの考案による多段増幅器のレンジ切
換回路の構成図、第２図は第１図のフローチヤー
ト、第３図は従来技術による多段増幅器のレンジ
切換回路の構成図、第４図は第３図のフローチヤ
ートである。
１……入力端子、２〜４……増幅器、５……Ａ
／Ｄ変換器、６……レンジ判定回路、７……ＣＰ
Ｕ、８……制御手段。
Fig. 1 is a block diagram of a range switching circuit for a multi-stage amplifier according to this invention, Fig. 2 is a flowchart of Fig. 1, Fig. 3 is a block diagram of a range switching circuit for a multi-stage amplifier according to the prior art, and Fig. 4 is a block diagram of a range switching circuit for a multi-stage amplifier according to the prior art. This is a flow chart of Figure 3. 1...Input terminal, 2-4...Amplifier, 5...A
/D converter, 6... Range determination circuit, 7... CP
U, 8...control means.
Claims (1)
換器と、 前記Ａ／Ｄ変換器出力を入力とし、前記Ａ／Ｄ
変換器データの設定電圧を０ｄＢとし、前記Ａ／
Ｄ変換器出力と前記設定電圧を比較し、前記増幅
器の増幅率を数〜数１０ｄＢ幅ごとに１レンジず
つ加減し、前記Ａ／Ｄ変換器出力を０ｄＢにする
制御手段とを備える多段増幅器のレンジ切換回路
。[Claims for Utility Model Registration] A cascaded multi-stage amplifier with a variable amplification factor, an A/D converter whose input is the output of the final stage of the amplifier, and an A/D converter whose input is the output of the A/D converter, and the A/D converter whose input is the output of the A/D converter. D
The setting voltage of the converter data is 0 dB, and the above A/
A multi-stage amplifier comprising: a control means that compares the output of the D converter with the set voltage, adjusts the amplification factor of the amplifier by one range every several to several tens of dB, and sets the output of the A/D converter to 0 dB. Range switching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11523990U JPH0471021U (en) | 1990-11-01 | 1990-11-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11523990U JPH0471021U (en) | 1990-11-01 | 1990-11-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0471021U true JPH0471021U (en) | 1992-06-23 |
Family
ID=31862993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11523990U Pending JPH0471021U (en) | 1990-11-01 | 1990-11-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0471021U (en) |
-
1990
- 1990-11-01 JP JP11523990U patent/JPH0471021U/ja active Pending
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