JPH01100522U - - Google Patents
Info
- Publication number
- JPH01100522U JPH01100522U JP19598587U JP19598587U JPH01100522U JP H01100522 U JPH01100522 U JP H01100522U JP 19598587 U JP19598587 U JP 19598587U JP 19598587 U JP19598587 U JP 19598587U JP H01100522 U JPH01100522 U JP H01100522U
- Authority
- JP
- Japan
- Prior art keywords
- chopper
- voltage
- amplifier
- output voltage
- holding means
- 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 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
Landscapes
- Amplifiers (AREA)
Description
第１図はこの考案の実施例に係るチヨツパ増幅
器の回路構成図、第２図は同じくチヨツパ増幅器
の動作波形図、第３図は従来のチヨツパ増幅器の
回路構成図、第４図は同じく従来のチヨツパ増幅
器の動作波形図である。
ｅｉ……入力電圧、Ｓ１，Ｓ２……スイツチ、
Ａ１，Ａ２，Ａ３……オペアンプ、Ｃ１，Ｃ２，
Ｃ３……コンデンサ、Ｒ５，Ｒ６，Ｒ７，Ｒ８…
…抵抗、Ｆ１，Ｆ２……平滑回路。
Fig. 1 is a circuit diagram of a chopper amplifier according to an embodiment of this invention, Fig. 2 is an operating waveform diagram of the chopper amplifier, Fig. 3 is a circuit diagram of a conventional chopper amplifier, and Fig. 4 is a diagram of a conventional chopper amplifier. FIG. 3 is an operating waveform diagram of a chopper amplifier. ei...Input voltage, S1 , S2 ...Switch,
A 1 , A 2 , A 3 ... operational amplifier, C 1 , C 2 ,
C3 ... Capacitor, R5 , R6 , R7 , R8 ...
...Resistance, F 1 , F 2 ... Smoothing circuit.
Claims (1)
からの信号を増幅する増幅回路と、その増幅回路
の出力電圧を上記チヨツパと同期して制御するス
イツチ手段とを有するチヨツパ増幅器において、 上記スイツチ手段のスイツチ動作に応動した上
記増幅回路の各出力電圧を保持する電圧保持手段
と、 上記電圧保持手段にて保持した各保持電圧を差
動増幅して、上記増幅回路のオフセツト電圧を除
去した出力電圧を出力する差動増幅手段と、 を設けたことを特徴とするチヨツパ増幅器。[Claims for Utility Model Registration] A chopper amplifier having a chopper that intermittents an input signal, an amplifier circuit that amplifies the signal from the chopper, and a switch means that controls the output voltage of the amplifier circuit in synchronization with the chopper. a voltage holding means for holding each output voltage of the amplifying circuit in response to a switch operation of the switching means; and a voltage holding means for differentially amplifying each held voltage held by the voltage holding means to obtain an offset voltage of the amplifying circuit. What is claimed is: 1. A chopper amplifier comprising: differential amplification means for outputting an output voltage from which .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19598587U JPH01100522U (en) | 1987-12-25 | 1987-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19598587U JPH01100522U (en) | 1987-12-25 | 1987-12-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01100522U true JPH01100522U (en) | 1989-07-06 |
Family
ID=31486631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19598587U Pending JPH01100522U (en) | 1987-12-25 | 1987-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01100522U (en) |
-
1987
- 1987-12-25 JP JP19598587U patent/JPH01100522U/ja active Pending