JPS578457A - Generating circuit for power source determination signal - Google Patents
Generating circuit for power source determination signalInfo
- Publication number
- JPS578457A JPS578457A JP8329780A JP8329780A JPS578457A JP S578457 A JPS578457 A JP S578457A JP 8329780 A JP8329780 A JP 8329780A JP 8329780 A JP8329780 A JP 8329780A JP S578457 A JPS578457 A JP S578457A
- Authority
- JP
- Japan
- Prior art keywords
- power source
- voltage
- determination signal
- turned
- capacitor
- 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
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/468—Regulating voltage or current wherein the variable actually regulated by the final control device is dc characterised by reference voltage circuitry, e.g. soft start, remote shutdown
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Measurement Of Current Or Voltage (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
PURPOSE:To make the delay time at the turning on of power source long without prolonging the delay time when power source is turned off by connecting a detecting capacitor to a DC output through a rectifier. CONSTITUTION:When a power source 1 is turned on, a transistor 7 is turned on and off by AC input voltage but since there is a rectifier 18, the capacitor 11 is not immediately charged until the DC output voltage E0 by a DC power source circuit 17 rises. When the voltage of the capacitor 11 attains reference voltage V1, a power source determination signal E1 is transmitted from a comparator 14. When the power source is cut off, the voltage Vc of the capacitor 11 can attain the reference voltage V1 early, and the power source determination signal E1 ceases. Thereby, the delay time at the turning on is made longer by as much as the time till rising of the DC output voltage E0 when power source is turned on, and the delay time when the power source is cut is made short.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8329780A JPS578457A (en) | 1980-06-19 | 1980-06-19 | Generating circuit for power source determination signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8329780A JPS578457A (en) | 1980-06-19 | 1980-06-19 | Generating circuit for power source determination signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS578457A true JPS578457A (en) | 1982-01-16 |
Family
ID=13798457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8329780A Pending JPS578457A (en) | 1980-06-19 | 1980-06-19 | Generating circuit for power source determination signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS578457A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5920312U (en) * | 1982-07-22 | 1984-02-07 | ティーディーケイ株式会社 | voltage monitoring circuit |
JPS5928713U (en) * | 1982-08-16 | 1984-02-22 | 沖電気工業株式会社 | Power supply output voltage confirmation signal sending circuit |
JPS60239816A (en) * | 1984-05-14 | 1985-11-28 | Matsushita Electric Ind Co Ltd | Power supply failure signal output circuit of measuring instrument |
JPS63238566A (en) * | 1987-03-27 | 1988-10-04 | Fuji Elelctrochem Co Ltd | Method for detecting alternating current input voltage |
-
1980
- 1980-06-19 JP JP8329780A patent/JPS578457A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5920312U (en) * | 1982-07-22 | 1984-02-07 | ティーディーケイ株式会社 | voltage monitoring circuit |
JPS5928713U (en) * | 1982-08-16 | 1984-02-22 | 沖電気工業株式会社 | Power supply output voltage confirmation signal sending circuit |
JPS60239816A (en) * | 1984-05-14 | 1985-11-28 | Matsushita Electric Ind Co Ltd | Power supply failure signal output circuit of measuring instrument |
JPH0477326B2 (en) * | 1984-05-14 | 1992-12-08 | Matsushita Electric Ind Co Ltd | |
JPS63238566A (en) * | 1987-03-27 | 1988-10-04 | Fuji Elelctrochem Co Ltd | Method for detecting alternating current input voltage |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS578457A (en) | Generating circuit for power source determination signal | |
GB1483796A (en) | Clamp circuits | |
GB1101723A (en) | Improvements in or relating to correlation circuits | |
JPS5552613A (en) | Sound control circuit | |
JPS5319080A (en) | Speed detector | |
JPS5246429A (en) | Direct current high voltage power source | |
JPS56157643A (en) | Dc power source device for car | |
ES8304721A1 (en) | Circuit arrangement for generating a D.C. control voltage dependent upon an A.C. voltage. | |
JPS5360675A (en) | Converter for power and dc signal | |
JPS52146160A (en) | Timing circuit | |
JPS5790723A (en) | Power supply device | |
JPS5485368A (en) | Switching power circuit | |
JPS55607A (en) | Frequency discriminator | |
JPS52137585A (en) | Input setting circuit | |
GB1261146A (en) | Electrical time delay circuit | |
JPS52141162A (en) | Sample hold circuit | |
JPS5439842A (en) | Power source circuit | |
JPS57113772A (en) | Detecting circuit for trouble of rectifying diode | |
JPS57176401A (en) | Malfunction preventing system for alarm circuit at input power supply application | |
JPS5521021A (en) | Destaticizing and separating method | |
JPS53139154A (en) | Integrated operation system relay | |
JPS53137387A (en) | Senser circuit | |
JPS57125855A (en) | Frequency discriminating circuit | |
JPS57162967A (en) | Separately-excited dc/dc converter | |
JPS57194627A (en) | Protecting device for load control circuit |