JPS6477206A - Amplifying circuit - Google Patents
Amplifying circuitInfo
- Publication number
- JPS6477206A JPS6477206A JP62232126A JP23212687A JPS6477206A JP S6477206 A JPS6477206 A JP S6477206A JP 62232126 A JP62232126 A JP 62232126A JP 23212687 A JP23212687 A JP 23212687A JP S6477206 A JPS6477206 A JP S6477206A
- Authority
- JP
- Japan
- Prior art keywords
- capacity
- differential amplifier
- preamplifier
- same value
- impedance
- 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
PURPOSE:To improve the resistance to power noise by capacitively coupling the output of a single end preamplifier and one input of a differential amplifier and earthing a reference input terminal by a series circuit of a capacity having the same value as the capacity of capacitive coupling and an impedance having the same value as the output impedance of the preamplifier. CONSTITUTION:The output of a single end preamplifier 1 is connected to an input terminal 2a of a differential amplifier 2 through a capacity 3. A capacity 4 having the same value as the capacity 3 and an impedance 5 having the same value as the output impedance of the preamplifier 1 are connected in series to earth a reference input terminal 2b of the differential amplifier 2. Thus, the resistance to power noise is improved because power noises applied to input terminals 2a and 2b of the differential amplifier 2 have the same phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62232126A JPS6477206A (en) | 1987-09-18 | 1987-09-18 | Amplifying circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62232126A JPS6477206A (en) | 1987-09-18 | 1987-09-18 | Amplifying circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6477206A true JPS6477206A (en) | 1989-03-23 |
Family
ID=16934409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62232126A Pending JPS6477206A (en) | 1987-09-18 | 1987-09-18 | Amplifying circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6477206A (en) |
-
1987
- 1987-09-18 JP JP62232126A patent/JPS6477206A/en active Pending
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