JPS5629721A - Power supply circuit - Google Patents

Power supply circuit

Info

Publication number
JPS5629721A
JPS5629721A JP10573379A JP10573379A JPS5629721A JP S5629721 A JPS5629721 A JP S5629721A JP 10573379 A JP10573379 A JP 10573379A JP 10573379 A JP10573379 A JP 10573379A JP S5629721 A JPS5629721 A JP S5629721A
Authority
JP
Japan
Prior art keywords
level
voltage
circuit
detected
terminal voltage
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
Application number
JP10573379A
Other languages
Japanese (ja)
Inventor
Hiroshi Okamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP10573379A priority Critical patent/JPS5629721A/en
Publication of JPS5629721A publication Critical patent/JPS5629721A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce the amount of power consumption and at the same time solve such problems as the generation of heat and the like for the power supply circuit the input of which has a big fluctuation, by controlling the transistor through the detection of the level of the terminal voltage of the smoothing capacitor.
CONSTITUTION: The terminal voltage of the smoothing capacitor C32 is detected through the level detecting circuit 33, and then the transistor TR34 is controlled. The TR34 is turned on at the moment when the circuit 33 consisting of the Schmitt circuit having the hysteresis in the detection levels L1 and L2 (L1>L2) detects that the terminal voltage E of C32 exceeds the level L1. And the discharge is started through the load of C32, and the voltage E reached the level L2 by the discharge is detected 33. Thus the TR34 is turned off. Then the C32 is charged through the diode 31, and thus the voltage E is increased suddenly. The above action is repeated to supply the voltage of nearly a constant level to the load. The dotted line and the 1-spot chain line between levels L1 and L2 show a large amount and small amount each of the current detected by the rectifier CT.
COPYRIGHT: (C)1981,JPO&Japio
JP10573379A 1979-08-20 1979-08-20 Power supply circuit Pending JPS5629721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10573379A JPS5629721A (en) 1979-08-20 1979-08-20 Power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10573379A JPS5629721A (en) 1979-08-20 1979-08-20 Power supply circuit

Publications (1)

Publication Number Publication Date
JPS5629721A true JPS5629721A (en) 1981-03-25

Family

ID=14415480

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10573379A Pending JPS5629721A (en) 1979-08-20 1979-08-20 Power supply circuit

Country Status (1)

Country Link
JP (1) JPS5629721A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833971A (en) * 1981-08-25 1983-02-28 Fuji Electric Co Ltd Control system for chopper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833971A (en) * 1981-08-25 1983-02-28 Fuji Electric Co Ltd Control system for chopper

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