JPS54139048A - Dc control circuit - Google Patents

Dc control circuit

Info

Publication number
JPS54139048A
JPS54139048A JP4749178A JP4749178A JPS54139048A JP S54139048 A JPS54139048 A JP S54139048A JP 4749178 A JP4749178 A JP 4749178A JP 4749178 A JP4749178 A JP 4749178A JP S54139048 A JPS54139048 A JP S54139048A
Authority
JP
Japan
Prior art keywords
resistance
capacitor
scr
damping
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
Application number
JP4749178A
Other languages
Japanese (ja)
Inventor
Yoshinobu Osawa
Shinichiro Hayashi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP4749178A priority Critical patent/JPS54139048A/en
Publication of JPS54139048A publication Critical patent/JPS54139048A/en
Pending legal-status Critical Current

Links

Landscapes

  • Relay Circuits (AREA)
  • Control Of Voltage And Current In General (AREA)

Abstract

PURPOSE: To obtain an econimic DC control circuit with a simple configuration by firing a damping resistance connected to a SCR in parallel with a delay of oscillation damping time or more of the filter circuit to short the damping resistance.
CONSTITUTION: A charging circuit in which a resistance 11 and a capacitor 12 are in series is connected to both contacts 8a and 8b of the filter circuit comprising a reactor 6 and a capacitor 7, a resistance 9 is inserted between the contact 8b and the capacitor 7, a SCR 13 is connected with the resystance 9 in parallel to short the resistance 9. A series circuit consisting of both a semiconductor switcing element 14 such as a shockless diode, which operates when the applied voltage becomes greater than a fixed value, and a current control resistance 15 is inserted between the gate of SCR 13 and the connecting point of resistance 11 with capacitor 12. In such a simple configuration, the damping resistance can be automatically switched on and off with non-contact when needed.
COPYRIGHT: (C)1979,JPO&Japio
JP4749178A 1978-04-20 1978-04-20 Dc control circuit Pending JPS54139048A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4749178A JPS54139048A (en) 1978-04-20 1978-04-20 Dc control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4749178A JPS54139048A (en) 1978-04-20 1978-04-20 Dc control circuit

Publications (1)

Publication Number Publication Date
JPS54139048A true JPS54139048A (en) 1979-10-29

Family

ID=12776579

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4749178A Pending JPS54139048A (en) 1978-04-20 1978-04-20 Dc control circuit

Country Status (1)

Country Link
JP (1) JPS54139048A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56164416A (en) * 1980-05-21 1981-12-17 Usac Electronics Ind Co Ltd Constant current control circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5131849A (en) * 1974-09-13 1976-03-18 Hitachi Ltd TONYUTEIKOTSUKI SHADANKINOTONYUHOHO

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5131849A (en) * 1974-09-13 1976-03-18 Hitachi Ltd TONYUTEIKOTSUKI SHADANKINOTONYUHOHO

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56164416A (en) * 1980-05-21 1981-12-17 Usac Electronics Ind Co Ltd Constant current control circuit

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