GB1256621A - - Google Patents

Info

Publication number
GB1256621A
GB1256621A GB1256621DA GB1256621A GB 1256621 A GB1256621 A GB 1256621A GB 1256621D A GB1256621D A GB 1256621DA GB 1256621 A GB1256621 A GB 1256621A
Authority
GB
United Kingdom
Prior art keywords
load
transistor
condition
source
circuits
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.)
Expired
Application number
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 filed Critical
Publication of GB1256621A publication Critical patent/GB1256621A/en
Expired 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/72—Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electronic Switches (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

1,256,621. Amplitude keying; transistor gates. G. & E. BRADLEY Ltd. 13 Jan., 1969, No. 1968/69. Headings H3R and H3T. A circuit for switching a source of oscillation 15 having a constant mean level to a load 20, comprises switches 11, 12 which connect the load 20 in two D.C. circuits, the switches being so arranged that when one is on the other is off, and the impedances of the two D.C. circuits being such that the mean voltage drop across the load 20 is constant, irrespective of which switch is closed. In one condition of the switching signal 30 transistor 12 is on, turning off transistor 13 to disconnect the emitter supply of transistor 11. In this condition the source 15 is disconnected from the load 20 and the load current can be adjusted by resistor 17. In the other condition transistor 12 is off and transistors 11, 13 are on connecting source 15 to load 20 and disconnecting resistor 17. A diode 34 may be provided for temperature stabilization.
GB1256621D 1969-01-13 1969-01-13 Expired GB1256621A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB196869 1969-01-13

Publications (1)

Publication Number Publication Date
GB1256621A true GB1256621A (en) 1971-12-08

Family

ID=9731216

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1256621D Expired GB1256621A (en) 1969-01-13 1969-01-13

Country Status (5)

Country Link
DE (1) DE2001009A1 (en)
DK (1) DK127769B (en)
FR (1) FR2028195A1 (en)
GB (1) GB1256621A (en)
NL (1) NL7000386A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4966343U (en) * 1972-09-25 1974-06-10

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4966343U (en) * 1972-09-25 1974-06-10

Also Published As

Publication number Publication date
DE2001009A1 (en) 1970-08-20
NL7000386A (en) 1970-07-15
DK127769B (en) 1973-12-31
FR2028195A1 (en) 1970-10-09

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees