PL320932A1 - Current source - Google Patents

Current source

Info

Publication number
PL320932A1
PL320932A1 PL97320932A PL32093297A PL320932A1 PL 320932 A1 PL320932 A1 PL 320932A1 PL 97320932 A PL97320932 A PL 97320932A PL 32093297 A PL32093297 A PL 32093297A PL 320932 A1 PL320932 A1 PL 320932A1
Authority
PL
Poland
Prior art keywords
current source
transistor
switch
connected via
drain
Prior art date
Application number
PL97320932A
Other versions
PL183356B1 (en
Inventor
Friedbert Riedel
Original Assignee
Electrowatt Tech Innovat 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 Electrowatt Tech Innovat Corp filed Critical Electrowatt Tech Innovat Corp
Publication of PL320932A1 publication Critical patent/PL320932A1/en
Publication of PL183356B1 publication Critical patent/PL183356B1/en

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is DC
    • G05F3/10—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/24—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the field-effect type only
    • G05F3/242—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the field-effect type only with compensation for device parameters, e.g. channel width modulation, threshold voltage, processing, or external variations, e.g. temperature, loading, supply voltage

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Amplifiers (AREA)
  • Control Of Electrical Variables (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

The current source has a cascode transistor (T2) whose gate is connected via a first switch (S1) to the drain of an amplifier transistor (T3), whose gate is connected via a second switch (S2) to the drain of a current source transistor (T1). The cascode transistor gate is also connected via a third switch (S3), when a PMOS transistor is used, to an operating voltage (Vdd), or, when an NMOS, to earth. In the on state the first and second switches are closed and the third is open. In the off state the first and second switches are open and the third is closed.
PL97320932A 1996-07-19 1997-07-03 Current source PL183356B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH181196 1996-07-19

Publications (2)

Publication Number Publication Date
PL320932A1 true PL320932A1 (en) 1998-02-02
PL183356B1 PL183356B1 (en) 2002-06-28

Family

ID=4219161

Family Applications (1)

Application Number Title Priority Date Filing Date
PL97320932A PL183356B1 (en) 1996-07-19 1997-07-03 Current source

Country Status (5)

Country Link
EP (1) EP0821460B1 (en)
AT (1) ATE219610T1 (en)
CZ (1) CZ223297A3 (en)
DE (1) DE59707548D1 (en)
PL (1) PL183356B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10149769A1 (en) * 2001-10-09 2003-04-17 Philips Corp Intellectual Pty Digitally switchable power source

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4325899C2 (en) * 1993-08-02 1995-11-16 Siemens Ag MOS switching stage
JP2776285B2 (en) * 1995-01-13 1998-07-16 日本電気株式会社 Current switch circuit

Also Published As

Publication number Publication date
ATE219610T1 (en) 2002-07-15
CZ223297A3 (en) 1998-02-18
PL183356B1 (en) 2002-06-28
EP0821460A3 (en) 1998-04-08
DE59707548D1 (en) 2002-07-25
EP0821460A2 (en) 1998-01-28
EP0821460B1 (en) 2002-06-19

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Legal Events

Date Code Title Description
LAPS Decisions on the lapse of the protection rights

Effective date: 20050703