JPS57196607A - Amplifier - Google Patents
AmplifierInfo
- Publication number
- JPS57196607A JPS57196607A JP8091281A JP8091281A JPS57196607A JP S57196607 A JPS57196607 A JP S57196607A JP 8091281 A JP8091281 A JP 8091281A JP 8091281 A JP8091281 A JP 8091281A JP S57196607 A JPS57196607 A JP S57196607A
- Authority
- JP
- Japan
- Prior art keywords
- current
- power supply
- fet3
- voltage
- resistor
- 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
- 101150073536 FET3 gene Proteins 0.000 abstract 5
- 230000003321 amplification Effects 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
Landscapes
- Amplifiers (AREA)
Abstract
PURPOSE: To make direct coupling to the next stage easy, by providing different polarity for an FET3 and a transistor (TR), connecting a resistor connected to the TR to a negative power supply, and connecting a constant power supply to a positive power supply from a common connecting point between the FET and the TR.
CONSTITUTION: The operating current of an FET3 is supplied with a constant current source 9 and a current substracting the operating current of the FET3 from the current value of the source 9 is applied to a TR15. A DC voltage is applied to the base of the TR15 with a DC power supply 16 and the drain voltage of the FET3 is kept to a voltage almost equal to the voltage value of the power supply 16. Since the collector of the TR15 is connected to a negative power supply -B via a resistor 17, even if the resistance value of the resistor 17 due to the limitation of the amplification factor and the like, the DC potential at an output terminal 8 can be set to an arbitrary voltage value depending on the setting of the current of the current source 9 or the voltage of the power supply -B. When a positive signal is applied to an input terminal 1, the current of the FET3 is increased, and the current of the TR15 is decreased in terms of the increment and the level at the terminal 8 goes toward the negative polarity.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8091281A JPS57196607A (en) | 1981-05-29 | 1981-05-29 | Amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8091281A JPS57196607A (en) | 1981-05-29 | 1981-05-29 | Amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57196607A true JPS57196607A (en) | 1982-12-02 |
Family
ID=13731594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8091281A Pending JPS57196607A (en) | 1981-05-29 | 1981-05-29 | Amplifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57196607A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59125112U (en) * | 1983-01-12 | 1984-08-23 | 日本コロムビア株式会社 | amplifier |
| JPS59140514U (en) * | 1983-03-10 | 1984-09-19 | パイオニア株式会社 | amplifier circuit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5287346A (en) * | 1976-01-17 | 1977-07-21 | Hitachi Ltd | Amplifying circuit |
| JPS5287959A (en) * | 1976-01-19 | 1977-07-22 | Toshiba Corp | Cascode amplifier circuit |
-
1981
- 1981-05-29 JP JP8091281A patent/JPS57196607A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5287346A (en) * | 1976-01-17 | 1977-07-21 | Hitachi Ltd | Amplifying circuit |
| JPS5287959A (en) * | 1976-01-19 | 1977-07-22 | Toshiba Corp | Cascode amplifier circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59125112U (en) * | 1983-01-12 | 1984-08-23 | 日本コロムビア株式会社 | amplifier |
| JPS59140514U (en) * | 1983-03-10 | 1984-09-19 | パイオニア株式会社 | amplifier circuit |
| JPH0328580Y2 (en) * | 1983-03-10 | 1991-06-19 |
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