GB983736A - Improvements in or relating to reactance circuits - Google Patents

Improvements in or relating to reactance circuits

Info

Publication number
GB983736A
GB983736A GB3249363A GB3249363A GB983736A GB 983736 A GB983736 A GB 983736A GB 3249363 A GB3249363 A GB 3249363A GB 3249363 A GB3249363 A GB 3249363A GB 983736 A GB983736 A GB 983736A
Authority
GB
United Kingdom
Prior art keywords
input
transistor
capacitor
reactance
oscillator
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
GB3249363A
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.)
Telefunken Patentverwertungs GmbH
Original Assignee
Telefunken Patentverwertungs GmbH
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 Telefunken Patentverwertungs GmbH filed Critical Telefunken Patentverwertungs GmbH
Publication of GB983736A publication Critical patent/GB983736A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/46—One-port networks
    • H03H11/48—One-port networks simulating reactances

Landscapes

  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

983,736. Semi-conductor reactance circuits; transistor oscillator and amplifier circuits. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Aug. 16, 1963 [Aug. 17, 1962], No. 32493/63. Headings H3R and H3T. An inductive pure reactance is produced by connecting a resistance R to the base of a transistor so that, with the transistor input capacitance C D , a 45 degrees phase lag is produced at the base, and by connecting a capacitor C A between collector and emitter, and a resistor G between the collector load resistor R 2 and input terminal B<SP>1</SP>, to produce a further 45 degrees phase lag feedback to the input. Capacitor C 1 in series with resistor G is merely a low reactance D.C. voltage blocking capacitor. With capacitor C K shunting the input terminals B<SP>1</SP>, E, a parallel resonant input circuit for an amplifier or an oscillator may be formed. The circuit input conductance Y 1 across B<SP>1</SP>,E is shown to equal and, allowing for the input conductance of the transistor &c., this is a pure inductance if approximately and resonance is obtained if It follows therefore that are approximate requirements. An amplified signal is available at U A and by suitably choosing the operation conditions the circuit will operate as a sinusoidal oscillator.
GB3249363A 1962-08-17 1963-08-16 Improvements in or relating to reactance circuits Expired GB983736A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET0022615 1962-08-17

Publications (1)

Publication Number Publication Date
GB983736A true GB983736A (en) 1965-02-17

Family

ID=7550634

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3249363A Expired GB983736A (en) 1962-08-17 1963-08-16 Improvements in or relating to reactance circuits

Country Status (1)

Country Link
GB (1) GB983736A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2132439A (en) * 1982-12-22 1984-07-04 Gen Electric Plc Oscillator circuit arrangements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2132439A (en) * 1982-12-22 1984-07-04 Gen Electric Plc Oscillator circuit arrangements

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