JPH01154472U - - Google Patents
Info
- Publication number
- JPH01154472U JPH01154472U JP5187288U JP5187288U JPH01154472U JP H01154472 U JPH01154472 U JP H01154472U JP 5187288 U JP5187288 U JP 5187288U JP 5187288 U JP5187288 U JP 5187288U JP H01154472 U JPH01154472 U JP H01154472U
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- input signal
- operational amplifier
- diode
- 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
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000009499 grossing Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
Description
第１図は本考案による平滑回路の一実施例を示
す回路図、第２図は第１図において通常入力にお
ける入力信号と出力信号の様子を示す図、第３図
は第１図において瞬時高レベル入力時の入力信号
と出力信号の様子を示す図、第４図は第１図にお
いて高入力レベルから低入力レベルへ急速に変化
する時の入力信号と出力信号の様子を示す図であ
る。
１……演算増幅器、Ｒ０〜Ｒ４……抵抗、Ｃ１
……コンデンサ、ＺＤ１……定電圧ダイオード、
ＶＰ……入力リツプル電圧のピーク値、ＶＬ……
入力リツプル電圧の谷値。
Fig. 1 is a circuit diagram showing an embodiment of the smoothing circuit according to the present invention, Fig. 2 is a diagram showing the state of the input signal and output signal at normal input in Fig. 1, and Fig. 3 is a diagram showing the instantaneous high FIG. 4 is a diagram showing the state of the input signal and output signal when a level is input. FIG. 4 is a diagram showing the state of the input signal and output signal when the input level rapidly changes from a high input level to a low input level in FIG. 1...Operation amplifier, R0-R4...Resistor, C1
... Capacitor, ZD1 ... Constant voltage diode,
VP...Peak value of input ripple voltage, VL...
Valley value of input ripple voltage.
Claims (1)
子間にコンデンサを接続し、前記演算増幅器の出
力端子に抵抗と定電圧ダイオードを前記コンデン
サの充電時順方向となるように直列に接続し、前
記定電圧ダイオードと前記コンデンサの接続点と
演算増幅器の非基準電位の入力端子との間に並列
にインピーダンスを接続し、前記コンデンサの充
電時定数を小さくし、放電時定数は予め定めた入
力信号変動範囲では大きくし、かつ高入力信号か
ら低入力信号への急激な変化時には、前記コンデ
ンサの充電電荷を前記抵抗および定電圧ダイオー
ドを介して放電させることによりすみやかに出力
電圧を下げることを特徴とした平滑回路。 A capacitor is connected between a reference potential input terminal and an output terminal of an operational amplifier, and a resistor and a constant voltage diode are connected in series to the output terminal of the operational amplifier so that the direction is forward when the capacitor is charged. An impedance is connected in parallel between the connection point of the diode and the capacitor and the non-reference potential input terminal of the operational amplifier, and the charging time constant of the capacitor is made small, and the discharging time constant is set within a predetermined input signal fluctuation range. and when there is a sudden change from a high input signal to a low input signal, the smoothing circuit is characterized in that when there is a sudden change from a high input signal to a low input signal, the output voltage is quickly lowered by discharging the charge stored in the capacitor through the resistor and the voltage regulator diode. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5187288U JPH01154472U (en) | 1988-04-18 | 1988-04-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5187288U JPH01154472U (en) | 1988-04-18 | 1988-04-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01154472U true JPH01154472U (en) | 1989-10-24 |
Family
ID=31277888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5187288U Pending JPH01154472U (en) | 1988-04-18 | 1988-04-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01154472U (en) |
-
1988
- 1988-04-18 JP JP5187288U patent/JPH01154472U/ja active Pending
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