JPS5972022U - Operational amplifier bias circuit - Google Patents

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

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来のバイアス回路の一例の回路図、第２図は
第１図及び第３図示の回路の出力電圧波形図ミ第３図は
本考案バイアス回路の一実施例の回路図である。 １・・・演算増幅器、２・・・電源端子、３・・・入力
端子、４・・・出力端子、Ｃ□・・・コンデンサ、Ｄｌ
、Ｄ２・・・ダイオード、Ｒ工〜Ｒ６・・・抵抗。Figure 1 is a circuit diagram of an example of a conventional bias circuit, Figure 2 is a diagram of output voltage waveforms of the circuits shown in Figures 1 and 3, and Figure 3 is a circuit diagram of an embodiment of the bias circuit of the present invention. . 1... Operational amplifier, 2... Power supply terminal, 3... Input terminal, 4... Output terminal, C□... Capacitor, Dl
, D2...Diode, R-R6...Resistor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ２電源を供給されて動作する演算増幅器に一方の電源の
みを供給し、該演算増幅器の他方の電源端子を接地して
使用する際該演算増幅器の入力端子にバイアス電圧を供
給する演算増幅器のバイアス回路において、該一方の電
源にその一端を接続されて該一方の電源の電圧を分圧し
て取り出されるバイアス電圧を該入力端子に供給する分
圧回路と、該分圧回路のバイアス電圧取り出し点と他端
との間に並列接続されたコンデンサと、該分圧回路の他
端と接地間に直列接続された定電圧回路とよりなる演算
増幅器のバイアス回路。Biasing of an operational amplifier that supplies a bias voltage to the input terminal of the operational amplifier when only one power supply is supplied to the operational amplifier that operates with two power supplies supplied, and the other power supply terminal of the operational amplifier is grounded. In the circuit, a voltage divider circuit whose one end is connected to the one power supply and supplies a bias voltage extracted by dividing the voltage of the one power supply to the input terminal, and a bias voltage extraction point of the voltage divider circuit; A bias circuit for an operational amplifier comprising a capacitor connected in parallel between the other end of the voltage divider circuit and a constant voltage circuit connected in series between the other end of the voltage divider circuit and ground.