JPS58173928U - lobus filter - Google Patents
lobus filterInfo
- Publication number
- JPS58173928U JPS58173928U JP7238782U JP7238782U JPS58173928U JP S58173928 U JPS58173928 U JP S58173928U JP 7238782 U JP7238782 U JP 7238782U JP 7238782 U JP7238782 U JP 7238782U JP S58173928 U JPS58173928 U JP S58173928U
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- resistor
- capacitor
- input terminal
- comparator 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.)
- Pending
Links
Landscapes
- Networks Using Active Elements (AREA)
- Manipulation Of Pulses (AREA)
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
第１図は先行技術の電気回路図、第２図は第１−図に示
された先行技術の動作を説明するための波形図、第３図
は本考案の一実施例の電気回路図、第４図は第３図に示
された実施例の動作を説明するための波形図、第５図は
本考案の他の実施例の電気回路図、第６図は第５図に示
された実施例の動作を説明するための波形図である。
４・・・入力端子、１０・・・出力端子、１１．２１・
・・ローパスフィルタ、１５・・・比較回路、ＲＯ〜Ｒ
７・・・抵抗、ＣＯ・・・コンデンサ、Ｇ１・・・ＡＮ
Ｄゲート、Ｇ２・・・ＮＡＮＤゲート、ｓｌ、ｓ２・・
・アナログスイッチ、ＤＩ、Ｄ２・・・ダイオード、Ｔ
ＲＩ、ＴＲ２・・・トランジスタ。FIG. 1 is an electrical circuit diagram of the prior art, FIG. 2 is a waveform diagram for explaining the operation of the prior art shown in FIGS. Fig. 4 is a waveform diagram for explaining the operation of the embodiment shown in Fig. 3, Fig. 5 is an electric circuit diagram of another embodiment of the present invention, and Fig. 6 is the same as that shown in Fig. 5. FIG. 3 is a waveform diagram for explaining the operation of the embodiment. 4...Input terminal, 10...Output terminal, 11.21.
...Low pass filter, 15...Comparison circuit, RO~R
7...Resistor, CO...Capacitor, G1...AN
D gate, G2...NAND gate, sl, s2...
・Analog switch, DI, D2...diode, T
RI, TR2...transistor.
Claims (1)
比較回路の一方の入力端子に接続し、比較回路の他方入
力端子に基準電圧を与え、抵抗の前記他方端子に積分形
コンデンサを接続し、抵抗の前記他方端子にはまた、コ
ンデンサの充電中に比較回路の一方入力端子の電圧が基
準電圧以上になったときコンデンサの充電時定数を小さ
くし、コンデンサの放電中に比較回路の一方入力端子の
電圧が基準電圧未満になったときコンデンサの放電時定
数を小さくする手段を接続したことを特徴トスるローパ
スフィルタ。 −Input a signal to one terminal of a resistor, connect the other terminal of the resistor to one input terminal of a comparator circuit, apply a reference voltage to the other input terminal of the comparator circuit, and connect an integrating capacitor to the other terminal of the resistor. However, when the voltage at one input terminal of the comparator circuit becomes equal to or higher than the reference voltage while the capacitor is being charged, the other terminal of the resistor is also connected to reduce the charging time constant of the capacitor. A low-pass filter characterized in that a means is connected to reduce the discharge time constant of the capacitor when the voltage at the input terminal becomes less than the reference voltage. −
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7238782U JPS58173928U (en) | 1982-05-17 | 1982-05-17 | lobus filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7238782U JPS58173928U (en) | 1982-05-17 | 1982-05-17 | lobus filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58173928U true JPS58173928U (en) | 1983-11-21 |
Family
ID=30081954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7238782U Pending JPS58173928U (en) | 1982-05-17 | 1982-05-17 | lobus filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58173928U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61271519A (en) * | 1985-05-27 | 1986-12-01 | Nippon Kogaku Kk <Nikon> | Reference voltage generating circuit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5065163A (en) * | 1973-09-12 | 1975-06-02 |
-
1982
- 1982-05-17 JP JP7238782U patent/JPS58173928U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5065163A (en) * | 1973-09-12 | 1975-06-02 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61271519A (en) * | 1985-05-27 | 1986-12-01 | Nippon Kogaku Kk <Nikon> | Reference voltage generating circuit |
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