JPH0787302B2 - Amplifier circuit - Google Patents
Amplifier circuitInfo
- Publication number
- JPH0787302B2 JPH0787302B2 JP60196299A JP19629985A JPH0787302B2 JP H0787302 B2 JPH0787302 B2 JP H0787302B2 JP 60196299 A JP60196299 A JP 60196299A JP 19629985 A JP19629985 A JP 19629985A JP H0787302 B2 JPH0787302 B2 JP H0787302B2
- Authority
- JP
- Japan
- Prior art keywords
- amplifier circuit
- stage
- stage amplifier
- post
- circuit
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0237—High frequency adaptations
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistors, capacitors or inductors
Landscapes
- Parts Printed On Printed Circuit Boards (AREA)
- Amplifiers (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、音響分野における増幅回路に関するものであ
る。Description: FIELD OF THE INVENTION The present invention relates to an amplifier circuit in the acoustic field.
従来の技術 近年、低周波増幅回路においては、大出力低歪率回路の
要求の傾向にある。2. Description of the Related Art In recent years, there has been a demand for a large output, low distortion circuit in a low frequency amplifier circuit.
第２図は、従来の増幅回路における高域の歪低減回路を
示すものである。2,4は抵抗、３はコンデンサである。
コンデンサ3,抵抗４による回路により高域の歪率を低減
させている。FIG. 2 shows a high-frequency distortion reducing circuit in a conventional amplifier circuit. 2 and 4 are resistors and 3 is a capacitor.
The distortion ratio in the high frequency range is reduced by the circuit consisting of the capacitor 3 and the resistor 4.
発明が解決しようとする問題点 しかしながら、低価格増幅基が要求される昨今において
は、部品点数を１点でも削減する事が望まれている。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in recent years when a low-cost amplification group is required, it is desired to reduce the number of parts even one.
本発明は上記問題点に鑑み、上記部品をなくして高域歪
を低減させる増幅回路を提供するものである。In view of the above problems, the present invention provides an amplifier circuit that eliminates the above-mentioned components and reduces high frequency distortion.
問題点を解決するための手段 上記問題点を解決するために、本発明の増幅回路は前段
増幅回路と、後段増幅回路と、後段増幅回路に電源電圧
を印加する負荷抵抗器と、後段増幅回路と負荷抵抗器と
の接続点から前段増幅回路の入力端の近傍までが同一基
板上にて延長され前段増幅回路の入力端との間に静電容
量を有する導電箔とを備えた構成となっている。Means for Solving the Problems In order to solve the above problems, an amplifier circuit according to the present invention includes a pre-stage amplifier circuit, a post-stage amplifier circuit, a load resistor for applying a power supply voltage to the post-stage amplifier circuit, and a post-stage amplifier circuit. From the connection point between the load resistor and the load resistor to the vicinity of the input end of the pre-stage amplification circuit on the same substrate and a conductive foil having a capacitance between the input end of the pre-stage amplification circuit and the conductive foil. ing.
作用 本発明は、上記した構成によって、使用する銅箔のレイ
アウトにより、後段増幅回路と負荷抵抗器との接続点か
ら同一基板上の前段増幅回路の入力端の近傍まで延長さ
れた導電箔が本来不可避的に持っているインピーダンス
と、この導電箔と近接した前段増幅回路の入力端との間
に必然的に生じる静電容量とを用いて、従来部品として
使用していた抵抗およびコンデンサとほぼ同等の効果を
もたせ、上記部品をなくすこととなる。Action The present invention, according to the configuration described above, is essentially a conductive foil extended from the connection point between the rear-stage amplifier circuit and the load resistor to the vicinity of the input end of the front-stage amplifier circuit on the same substrate, depending on the layout of the copper foil used. By using the impedance that is inevitably possessed and the electrostatic capacity that is inevitably generated between this conductive foil and the input terminal of the preceding stage amplification circuit that is close to it, it is almost the same as the resistor and capacitor used as conventional parts. The above effect is obtained and the above parts are eliminated.
実 施 例 以下、本発明の一実施例の増幅回路について図面を参照
しながら説明する。Example Hereinafter, an amplifier circuit according to an example of the present invention will be described with reference to the drawings.
第１図は、本発明の実施例における増幅回路のブロック
ダイアグラムである。１は銅箔、２は抵抗である。FIG. 1 is a block diagram of an amplifier circuit according to an embodiment of the present invention. 1 is a copper foil and 2 is a resistor.
以上の様に構成された増幅回路において、高域歪低減に
対する動作を説明する。１の銅箔を前段の増幅回路の入
力に対して適当なインピーダンスＲと結合容量Ｃを持つ
ようにレイアウトする事により、大電流出力時に輻射さ
れる出力波形を入力段に逆位相で加える事により高域歪
の悪化を抑える動作をする。An operation for reducing high frequency distortion in the amplifier circuit configured as described above will be described. By laying out the copper foil of No. 1 so as to have appropriate impedance R and coupling capacitance C with respect to the input of the amplifier circuit of the previous stage, by adding the output waveform radiated at the time of large current output to the input stage in the opposite phase Operates to suppress deterioration of high frequency distortion.
発明の効果 以上の様に本実施例によれば、銅箔のレイアウトを適当
に選択する事により、銅箔のインピーダンスと結合容量
を利用して、従来使用していた抵抗およびコンデンサを
廃止する事が出来る。As described above, according to the present embodiment, by appropriately selecting the layout of the copper foil, the impedance and coupling capacitance of the copper foil can be used to eliminate the resistors and capacitors that have been conventionally used. Can be done.
第１図は本発明の実施例における増幅回路のブロック
図、第２図は従来の増幅回路の高域歪低域回路のブロッ
ク図である。 １……銅箔、2,4……抵抗、３……コンデンサ。FIG. 1 is a block diagram of an amplifier circuit according to an embodiment of the present invention, and FIG. 2 is a block diagram of a high frequency distortion low band circuit of a conventional amplifier circuit. 1 ... Copper foil, 2, 4 ... Resistor, 3 ... Capacitor.
Claims (1)
段増幅回路に電源電圧を印加する負荷抵抗器と、前記後
段増幅回路と前記負荷抵抗器との接続点から前記前段増
幅回路の入力端の近傍までが同一基板上にて延長され前
記前段増幅回路の入力端との間に静電容量を有する導電
箔とを備えた増幅回路。1. A pre-stage amplifier circuit, a post-stage amplifier circuit, a load resistor for applying a power supply voltage to the post-stage amplifier circuit, and an input of the pre-stage amplifier circuit from a connection point of the post-stage amplifier circuit and the load resistor. An amplifier circuit including a conductive foil extending up to the vicinity of the end on the same substrate and having a capacitance between the front end and the input end of the amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60196299A JPH0787302B2 (en) | 1985-09-05 | 1985-09-05 | Amplifier circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60196299A JPH0787302B2 (en) | 1985-09-05 | 1985-09-05 | Amplifier circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6257305A JPS6257305A (en) | 1987-03-13 |
| JPH0787302B2 true JPH0787302B2 (en) | 1995-09-20 |
Family
ID=16355495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60196299A Expired - Fee Related JPH0787302B2 (en) | 1985-09-05 | 1985-09-05 | Amplifier circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0787302B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111800957B (en) * | 2019-04-08 | 2021-12-28 | 炫途储能科技(上海)有限公司 | Method for increasing current capacity of aluminum substrate circuit board |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5323072A (en) * | 1976-08-14 | 1978-03-03 | Matsushita Electric Works Ltd | Wiring printed board |
| JPS57139915A (en) * | 1981-02-25 | 1982-08-30 | Tokyo Shibaura Electric Co | Condenser for substrate |
| JPS5844789A (en) * | 1981-09-10 | 1983-03-15 | 株式会社アサヒ化学研究所 | Method of forming dielectric on printed circuit board |
-
1985
- 1985-09-05 JP JP60196299A patent/JPH0787302B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6257305A (en) | 1987-03-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |