JPS5952716U - Amplifier gain adjustment circuit - Google Patents
Amplifier gain adjustment circuitInfo
- Publication number
- JPS5952716U JPS5952716U JP14706082U JP14706082U JPS5952716U JP S5952716 U JPS5952716 U JP S5952716U JP 14706082 U JP14706082 U JP 14706082U JP 14706082 U JP14706082 U JP 14706082U JP S5952716 U JPS5952716 U JP S5952716U
- Authority
- JP
- Japan
- Prior art keywords
- input
- adjustment circuit
- gain adjustment
- side transistors
- amplifier gain
- 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
Landscapes
- Control Of Amplification And Gain Control (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来例を示す回路図、第２図は本出願人が先に
提案した増幅器を示す回路図、第３図は本考案の一実施
例を示す回路図である。
図中、３．１０はＦＥＴ、 １２． １５はトランジス
タ、９は可変抵抗器である。FIG. 1 is a circuit diagram showing a conventional example, FIG. 2 is a circuit diagram showing an amplifier previously proposed by the applicant, and FIG. 3 is a circuit diagram showing an embodiment of the present invention. In the figure, 3.10 is FET, 12. 15 is a transistor, and 9 is a variable resistor.
Claims (1)
れ互いに導電型の異なる第１及び第２の入力側トランジ
スタと、該第１及び第２の入力側トランジスタにカスコ
ード接続され、上記第１及び第２の入力側トランジスタ
とそれぞれ導電型を異にし、出力電極が共通接続された
第３及び第４の出力側トランジスタとを有し、上記第１
及び第２の入力側トランジスタのエミッタ又はソース同
志の共通接続点と上記第３及び第４の出力側トランジス
タ同志の共通接続点との間に可変抵抗器を接続し該可変
抵抗器の摺動子を接地したことを特徴とする増幅器の利
得調整回路。first and second input-side transistors whose input electrodes and emitters or sources are commonly connected and have different conductivity types; and cascode-connected to the first and second input-side transistors, the first and second The first transistor has third and fourth output transistors having different conductivity types from the input transistor and having output electrodes connected in common.
A variable resistor is connected between a common connection point between the emitters or sources of the second input side transistors and a common connection point between the third and fourth output side transistors, and a slider of the variable resistor is connected. An amplifier gain adjustment circuit characterized in that the amplifier is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14706082U JPS5952716U (en) | 1982-09-30 | 1982-09-30 | Amplifier gain adjustment circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14706082U JPS5952716U (en) | 1982-09-30 | 1982-09-30 | Amplifier gain adjustment circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5952716U true JPS5952716U (en) | 1984-04-06 |
| JPH0221782Y2 JPH0221782Y2 (en) | 1990-06-12 |
Family
ID=30327145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14706082U Granted JPS5952716U (en) | 1982-09-30 | 1982-09-30 | Amplifier gain adjustment circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5952716U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4725955U (en) * | 1971-04-19 | 1972-11-24 | ||
| JPS5287346A (en) * | 1976-01-17 | 1977-07-21 | Hitachi Ltd | Amplifying circuit |
-
1982
- 1982-09-30 JP JP14706082U patent/JPS5952716U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4725955U (en) * | 1971-04-19 | 1972-11-24 | ||
| JPS5287346A (en) * | 1976-01-17 | 1977-07-21 | Hitachi Ltd | Amplifying circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0221782Y2 (en) | 1990-06-12 |
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