JPS6082825U

JPS6082825U - Amplifier

Info

Publication number: JPS6082825U
Application number: JP17542283U
Authority: JP
Inventors: 進田中
Original assignee: 山水電気株式会社
Priority date: 1983-11-15
Filing date: 1983-11-15
Publication date: 1985-06-08

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

[Brief explanation of the drawing]

第１図は従来のオペアンプＩＣを用いた増幅器の回路構
成図、第２図はオペアンプＩＣの最大出力電圧の２倍の
出力電圧を得るための従来の増幅器の回路構成図、第３
図は本考案による増幅器の一実施例の回路構成図、第４
図及び第５図は第３図の実施例の動作説明図である。ＯＰＩ、ＯＦ２．ＯＦ２・・・演算増幅器（オペアンプ
）、Ｒ１，Ｒ２，Ｒ３，Ｒ４，Ｒ５，Ｒ６，Ｒ７、Ｒ８
・・・抵抗、ＲＬ・・・負荷、Ｅｌ、Ｒ２，Ｒ３、Ｒ４
，Ｒ５，Ｒ６・・・電源、ＳＩＮ・・・入力信号、５ｏ
ｕｔ・・・出力信号、Ｇ・・・グランド（アース）。第３図　　　　　　　　（＋２ＶＣＣゝ−２Ｖｃｃ第４図Ｅ５　　　　　　電層Ｖ］ ′ヒョー＋１８　　　　　　　　　　　　　　　　　　　　　　
　　　　　　　　〜Ｄ４が、＝ｔＶｃｃ十ニ゛＝３６Figure 1 is a circuit configuration diagram of an amplifier using a conventional operational amplifier IC, Figure 2 is a circuit configuration diagram of a conventional amplifier for obtaining an output voltage twice the maximum output voltage of the operational amplifier IC, and Figure 3 is a circuit configuration diagram of a conventional amplifier that uses an operational amplifier IC.
The figure is a circuit configuration diagram of an embodiment of the amplifier according to the present invention.
5 and 5 are explanatory diagrams of the operation of the embodiment of FIG. 3. OPI, OF2. OF2... operational amplifier (op amp), R1, R2, R3, R4, R5, R6, R7, R8
...Resistance, RL...Load, El, R2, R3, R4
, R5, R6...power supply, SIN...input signal, 5o
ut...output signal, G...ground (earth). Fig. 3 (+2VCC ゝ-2Vcc Fig. 4 E5 Electrical layer V) 'hyo +18
~D4 = tVcc 12 = 36

Claims

[Scope of utility model registration request]

An externally applied signal is connected to the input of a first amplifier that drives a load, a positive power supply voltage applied to the amplifier is supplied from the output of a second amplifier, and a negative power supply voltage is applied to the first amplifier. is given by the output of the third sump, the inputs of the second and third amplifiers are given a voltage that changes in accordance with the input or output of the first amplifier, and An amplifier characterized in that positive and negative power supply voltages changed in accordance with the input or output of the first amplifier.