JPS59119643U - Pulse generation circuit for initial setting - Google Patents
Pulse generation circuit for initial settingInfo
- Publication number
- JPS59119643U JPS59119643U JP1240783U JP1240783U JPS59119643U JP S59119643 U JPS59119643 U JP S59119643U JP 1240783 U JP1240783 U JP 1240783U JP 1240783 U JP1240783 U JP 1240783U JP S59119643 U JPS59119643 U JP S59119643U
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- power supply
- voltage
- initial setting
- pulse generation
- 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
- Electronic Switches (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図は本考案の実施例で初期設定用パルス発生回路の
回路図、第２図は第１図の回路動作を説明するための波
形図である。
２・・・定電圧ダイオード、３．４・・・充電回路、５
・・・放電用ダイオード、８・・・スイッチング用トラ
ンジスタ、９・・・負荷抵抗。FIG. 1 is a circuit diagram of an initial setting pulse generating circuit according to an embodiment of the present invention, and FIG. 2 is a waveform diagram for explaining the circuit operation of FIG. 1. 2... Constant voltage diode, 3.4... Charging circuit, 5
...Discharge diode, 8...Switching transistor, 9...Load resistor.
Claims (1)
えるとオン動作するように接続された定電圧ダイオード
と、抵抗とコンデンサの直列接続を持ち、前記定電圧ダ
イオードがオン動作したとき前記抵抗を通して流れ込む
電流によって前記コンデンサが所定の時定数で充電され
る充電回路と、前記コンデンサの端子電圧をベース入力
としベース電位がしきい値を超えたときオン動作するス
イッチング用トランジスタと、このトランジスタのコレ
クタ・エミツタ路に前記直流電源電圧を印加すべく設け
られ前記トランジスタのオン・オフ動作によるパルス電
圧を取出すために設けられた負荷抵抗と、前記コンデン
サと前記直流電源に接続され、直流電源の接地時前記コ
ンデンサの充電電荷を放電する放電用ダイオードを具備
することを特徴とする初期設定用パルス発生回路。A constant voltage diode is connected to turn on when the DC power supply voltage applied at power-on exceeds the Zener voltage, and a resistor and a capacitor are connected in series, and when the constant voltage diode turns on, a current flows through the resistor. a charging circuit that charges the capacitor with a current at a predetermined time constant; a switching transistor that receives the terminal voltage of the capacitor as a base input and turns on when the base potential exceeds a threshold; and a collector-emitter terminal of this transistor. A load resistor is provided to apply the DC power supply voltage to the circuit and is connected to the capacitor and the DC power supply, and is connected to the capacitor and the DC power supply when the DC power supply is grounded. What is claimed is: 1. An initial setting pulse generation circuit characterized by comprising a discharging diode for discharging a charged charge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1240783U JPS59119643U (en) | 1983-01-31 | 1983-01-31 | Pulse generation circuit for initial setting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1240783U JPS59119643U (en) | 1983-01-31 | 1983-01-31 | Pulse generation circuit for initial setting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59119643U true JPS59119643U (en) | 1984-08-13 |
Family
ID=30143809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1240783U Pending JPS59119643U (en) | 1983-01-31 | 1983-01-31 | Pulse generation circuit for initial setting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59119643U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5518731A (en) * | 1978-07-26 | 1980-02-09 | Hitachi Ltd | Generating circuit for initial reset signal |
| JPS5619220A (en) * | 1979-07-24 | 1981-02-23 | Mitsubishi Electric Corp | Clear signal generating circuit |
| JPS56125110A (en) * | 1980-03-06 | 1981-10-01 | Hitachi Ltd | Reset circuit |
-
1983
- 1983-01-31 JP JP1240783U patent/JPS59119643U/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5518731A (en) * | 1978-07-26 | 1980-02-09 | Hitachi Ltd | Generating circuit for initial reset signal |
| JPS5619220A (en) * | 1979-07-24 | 1981-02-23 | Mitsubishi Electric Corp | Clear signal generating circuit |
| JPS56125110A (en) * | 1980-03-06 | 1981-10-01 | Hitachi Ltd | Reset circuit |
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