JPS5516557A - Voltage selective switching circuit - Google Patents

Voltage selective switching circuit

Info

Publication number
JPS5516557A
JPS5516557A JP8925378A JP8925378A JPS5516557A JP S5516557 A JPS5516557 A JP S5516557A JP 8925378 A JP8925378 A JP 8925378A JP 8925378 A JP8925378 A JP 8925378A JP S5516557 A JPS5516557 A JP S5516557A
Authority
JP
Japan
Prior art keywords
voltage
fet
current
collector
transistor
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
JP8925378A
Other languages
Japanese (ja)
Inventor
Shunji Miura
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP8925378A priority Critical patent/JPS5516557A/en
Publication of JPS5516557A publication Critical patent/JPS5516557A/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
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors

Landscapes

  • Electronic Switches (AREA)
  • Bipolar Transistors (AREA)
  • Bipolar Integrated Circuits (AREA)

Abstract

PURPOSE:To lessen a leaked current when a transistor is OFF, by interposing FET between the collector and base of a bipolar transistor and then by supplying a base current via this FET. CONSTITUTION:As a voltage between collector C and emitter E of transistor 1 rises, a low voltage allow FET 2 to conduct, increasing the collector current. A more rise in voltage increases the gate-source voltage of FET2 and the internal resistance of FET increases while the collector current decreases. When the voltage between G(gate) and S(source) of FET becomes higher the pinch-off voltage, no current flows. This circuit has a little current leakage with the transistor OFF even when resistance R1 is made small to increase the maximum collector current.
JP8925378A 1978-07-21 1978-07-21 Voltage selective switching circuit Pending JPS5516557A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8925378A JPS5516557A (en) 1978-07-21 1978-07-21 Voltage selective switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8925378A JPS5516557A (en) 1978-07-21 1978-07-21 Voltage selective switching circuit

Publications (1)

Publication Number Publication Date
JPS5516557A true JPS5516557A (en) 1980-02-05

Family

ID=13965587

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8925378A Pending JPS5516557A (en) 1978-07-21 1978-07-21 Voltage selective switching circuit

Country Status (1)

Country Link
JP (1) JPS5516557A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3030648A1 (en) * 1980-08-13 1982-02-25 Siemens AG, 1000 Berlin und 8000 München METHOD AND ARRANGEMENT FOR PRESENTING GRAY VALUES IN A FACSIMILE TRANSMISSION

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3030648A1 (en) * 1980-08-13 1982-02-25 Siemens AG, 1000 Berlin und 8000 München METHOD AND ARRANGEMENT FOR PRESENTING GRAY VALUES IN A FACSIMILE TRANSMISSION
DE3030648C2 (en) * 1980-08-13 1983-11-10 Siemens AG, 1000 Berlin und 8000 München Method and arrangement for displaying gray values in a facsimile transmission

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