JPS5986718U - preamplifier - Google Patents
preamplifierInfo
- Publication number
- JPS5986718U JPS5986718U JP18148182U JP18148182U JPS5986718U JP S5986718 U JPS5986718 U JP S5986718U JP 18148182 U JP18148182 U JP 18148182U JP 18148182 U JP18148182 U JP 18148182U JP S5986718 U JPS5986718 U JP S5986718U
- Authority
- JP
- Japan
- Prior art keywords
- operational amplifier
- resistors
- preamplifier
- common
- amplifier
- 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
Landscapes
- Amplifiers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は演算増幅器の一般的な帰還量に対する周波数と
利得との関係を示す特性曲線図、第２図は本考案の実施
例による前置増幅器の回路図であ□る。
なお、図面に記載の記号は下記のものを示す。
２、 ３． １２． １３． １４・・・・・・抵抗、
４，５・・・・・・電界渇果トランジスタ、６・・・・
・・差動増幅器、７・・ン・・・信号入力端子、８・・
・・・・演算増幅器、９，１０・・・・・・入力、１１
・・・・・・出力。FIG. 1 is a characteristic curve diagram showing the relationship between frequency and gain with respect to the amount of general feedback of an operational amplifier, and FIG. 2 is a circuit diagram of a preamplifier according to an embodiment of the present invention. The symbols shown in the drawings indicate the following. 2, 3. 12. 13. 14...Resistance,
4, 5... Field starved transistor, 6...
...Differential amplifier, 7...N...Signal input terminal, 8...
...Operation amplifier, 9, 10...Input, 11
······output.
Claims (1)
またはソ・−スを共通に接続する２個の電界効果よりな
る差動増幅器とを有し、前記抵抗のそれぞれの出力を演
算増幅器の入力に接続するとともに、前記演算増幅器の
出力側より、その入力側と、前記電界効果トランジスタ
の一方のベースとに負帰還を加えてなる二重帰還形の前
置増幅器。It has an operational amplifier and a differential amplifier consisting of two field effects whose loads are resistors from a common power source and whose drains or sources are connected in common.The outputs of each of the resistors are used as inputs of the operational amplifier. A double feedback preamplifier, which is connected to the operational amplifier, and negative feedback is applied from the output side of the operational amplifier to its input side and to the base of one of the field effect transistors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18148182U JPS5986718U (en) | 1982-11-30 | 1982-11-30 | preamplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18148182U JPS5986718U (en) | 1982-11-30 | 1982-11-30 | preamplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5986718U true JPS5986718U (en) | 1984-06-12 |
Family
ID=30393243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18148182U Pending JPS5986718U (en) | 1982-11-30 | 1982-11-30 | preamplifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5986718U (en) |
-
1982
- 1982-11-30 JP JP18148182U patent/JPS5986718U/en active Pending
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