JPH0346219U - - Google Patents
Info
- Publication number
- JPH0346219U JPH0346219U JP10732689U JP10732689U JPH0346219U JP H0346219 U JPH0346219 U JP H0346219U JP 10732689 U JP10732689 U JP 10732689U JP 10732689 U JP10732689 U JP 10732689U JP H0346219 U JPH0346219 U JP H0346219U
- Authority
- JP
- Japan
- Prior art keywords
- chopper amplifier
- circuit
- output
- amplifier
- chopper
- 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
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Amplifiers (AREA)
Description
図は本考案実施例回路図。
ＩＮ……入力端子、ＯＵＴ……出力端子、Ａ１
……チヨツパ増幅器、Ａ２……バツフア増幅器、
Ａ３……差動増幅器、ＣＯＭＰ……比較回路、Ｑ
１，Ｑ２……利得制御用のトランジスタ、Ｓ１，
Ｓ２……切換回路。
The figure is a circuit diagram of an embodiment of the present invention. IN...Input terminal, OUT...Output terminal, A1
...Chiyotsupa amplifier, A2 ...Buffer amplifier,
A 3 ...differential amplifier, COMP...comparison circuit, Q
1 , Q 2 ...transistor for gain control, S 1 ,
S2 ...Switching circuit.
Claims (1)
パ増幅回路において、 前記負帰還が施されたチヨツパ増幅器の同等の
利得特性を持ち、前記チヨツパ増幅器の入力信号
が並列的に接続されたモニタ回路を設け、 このモニタ回路の出力レベルが所定値を越えた
ことを検出する比較回路と、 この比較回路の検出出力により駆動され、前記
チヨツパ増幅器の入力電位をきわめて低いレベル
に接続するとともに、前記チヨツパ増幅器の出力
に代えて前記モニタ回路の出力を出力端子に接続
する切換回路と を備えたことを特徴とするチヨツパ増幅回路。[Claims for Utility Model Registration] In a chopper amplifier circuit including a chopper amplifier to which negative feedback has been applied, the chipper amplifier has gain characteristics equivalent to that of the chopper amplifier to which negative feedback has been applied, and the input signals of the chopper amplifier are connected in parallel. A connected monitor circuit is provided, a comparison circuit detects that the output level of this monitor circuit exceeds a predetermined value, and the input potential of the chopper amplifier is connected to an extremely low level, driven by the detection output of this comparison circuit. A chopper amplifier circuit comprising: a switching circuit that connects the output of the monitor circuit to an output terminal instead of the output of the chopper amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10732689U JPH0346219U (en) | 1989-09-12 | 1989-09-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10732689U JPH0346219U (en) | 1989-09-12 | 1989-09-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0346219U true JPH0346219U (en) | 1991-04-30 |
Family
ID=31656019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10732689U Pending JPH0346219U (en) | 1989-09-12 | 1989-09-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0346219U (en) |
-
1989
- 1989-09-12 JP JP10732689U patent/JPH0346219U/ja active Pending