JPS5748829A - Semiconductor switch circuit - Google Patents

Semiconductor switch circuit

Info

Publication number
JPS5748829A
JPS5748829A JP12506380A JP12506380A JPS5748829A JP S5748829 A JPS5748829 A JP S5748829A JP 12506380 A JP12506380 A JP 12506380A JP 12506380 A JP12506380 A JP 12506380A JP S5748829 A JPS5748829 A JP S5748829A
Authority
JP
Japan
Prior art keywords
fet1
junction
voltage
thyristor
switch
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
JP12506380A
Other languages
Japanese (ja)
Inventor
Masao Yamada
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP12506380A priority Critical patent/JPS5748829A/en
Publication of JPS5748829A publication Critical patent/JPS5748829A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/13—Modifications for switching at zero crossing

Landscapes

  • Power Conversion In General (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To save the power of a simplified trigger circuit and to prevnt malfunction, by selecting a cutoff voltage of a junction FET lower than the power supply voltage. CONSTITUTION:When a power supply voltage is higher than a cutoff voltage of a junction FET1 when a switch 6 is applied, no drain current flows to the junction FET1 through a resistor 3, and even if the switch 6 is applied, no thyristor 5 is turned on. On the other hand, if the power supply voltage is lower than the cutoff voltage of the junction FET1, the drain current flows and the thyristor 5 turns on. That is, the thyristor 5 can be turned on without fail by making the threshold voltage of the FET1 lower, even if the switch 6 is applied at any point of time.
JP12506380A 1980-09-08 1980-09-08 Semiconductor switch circuit Pending JPS5748829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12506380A JPS5748829A (en) 1980-09-08 1980-09-08 Semiconductor switch circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12506380A JPS5748829A (en) 1980-09-08 1980-09-08 Semiconductor switch circuit

Publications (1)

Publication Number Publication Date
JPS5748829A true JPS5748829A (en) 1982-03-20

Family

ID=14900894

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12506380A Pending JPS5748829A (en) 1980-09-08 1980-09-08 Semiconductor switch circuit

Country Status (1)

Country Link
JP (1) JPS5748829A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58165861A (en) * 1982-03-29 1983-09-30 旭化成株式会社 Adsorbing material for purifying body liquid
US5187029A (en) * 1990-05-16 1993-02-16 Programme 3 Patent Holdings Electrochemical cell

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5133972A (en) * 1974-09-18 1976-03-23 Hitachi Ltd HIKARIKETSUGONOKOTAISUITSUCHIKAIRO

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5133972A (en) * 1974-09-18 1976-03-23 Hitachi Ltd HIKARIKETSUGONOKOTAISUITSUCHIKAIRO

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58165861A (en) * 1982-03-29 1983-09-30 旭化成株式会社 Adsorbing material for purifying body liquid
US5187029A (en) * 1990-05-16 1993-02-16 Programme 3 Patent Holdings Electrochemical cell

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