CH324855A - Circuit arrangement for controlling an electrical load by means of a boundary layer transistor - Google Patents

Circuit arrangement for controlling an electrical load by means of a boundary layer transistor

Info

Publication number
CH324855A
CH324855A CH324855DA CH324855A CH 324855 A CH324855 A CH 324855A CH 324855D A CH324855D A CH 324855DA CH 324855 A CH324855 A CH 324855A
Authority
CH
Switzerland
Prior art keywords
controlling
circuit arrangement
boundary layer
electrical load
layer transistor
Prior art date
Application number
Other languages
German (de)
Inventor
Marie Van Overbeek A Wilhelmus
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of CH324855A publication Critical patent/CH324855A/en

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B11/00—Automatic controllers
    • G05B11/01—Automatic controllers electric
    • G05B11/012—Automatic controllers electric details of the transmission means
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
CH324855D 1953-07-22 1954-07-20 Circuit arrangement for controlling an electrical load by means of a boundary layer transistor CH324855A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL324855X 1953-07-22

Publications (1)

Publication Number Publication Date
CH324855A true CH324855A (en) 1957-10-15

Family

ID=19784131

Family Applications (1)

Application Number Title Priority Date Filing Date
CH324855D CH324855A (en) 1953-07-22 1954-07-20 Circuit arrangement for controlling an electrical load by means of a boundary layer transistor

Country Status (4)

Country Link
AU (1) AU167294B1 (en)
BE (1) BE530540A (en)
CH (1) CH324855A (en)
FR (1) FR1105072A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986651A (en) * 1956-08-09 1961-05-30 Philips Corp Trigger circuit-arrangement comprising two transistors
US2963638A (en) * 1957-07-01 1960-12-06 Hycon Mfg Company Power regulator
US3092757A (en) * 1958-08-01 1963-06-04 Forbro Design Inc Circuit means for preventing spike or surges at the output of a power supply

Also Published As

Publication number Publication date
BE530540A (en)
AU167294B1 (en) 1954-07-01
FR1105072A (en) 1955-11-28

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