GB557148A - Negative transconductance tube oscillators - Google Patents

Negative transconductance tube oscillators

Info

Publication number
GB557148A
GB557148A GB11055/42A GB1105542A GB557148A GB 557148 A GB557148 A GB 557148A GB 11055/42 A GB11055/42 A GB 11055/42A GB 1105542 A GB1105542 A GB 1105542A GB 557148 A GB557148 A GB 557148A
Authority
GB
United Kingdom
Prior art keywords
tuned
resonant circuit
negative transconductance
anode
valve
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
GB11055/42A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB557148A publication Critical patent/GB557148A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B7/00—Generation of oscillations using active element having a negative resistance between two of its electrodes
    • H03B7/02—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance
    • H03B7/04—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance active element being vacuum tube

Abstract

557,148. Valve generating circuits. STANDARD TELEPHONES & CABLES, Ltd. Aug. 7, 1942, No. 11055. Convention date, Nov. 26, 1941. [Class 40 (v)] An oscillator comprises a valve I having the screen S at a higher potential than the anode A so as to have a negative transconductance, the anode being connected to the cathode by a parallel resonant circuit L<SP>1</SP>, C<SP>1</SP> tuned to the desired frequency, and to the control grid by a series resonant circuit L2, C<SP>2</SP> tuned to the same frequency. At resonance the tuned circuits are equivalent to the pure resistances RA, RB and the oscillator works at high efficiency without phase shift. The series resonant circuit may be replaced by a piezo-electric crystal.
GB11055/42A 1941-11-26 1942-08-07 Negative transconductance tube oscillators Expired GB557148A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US557148XA 1956-05-09 1956-05-09

Publications (1)

Publication Number Publication Date
GB557148A true GB557148A (en) 1943-11-05

Family

ID=21999689

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11055/42A Expired GB557148A (en) 1941-11-26 1942-08-07 Negative transconductance tube oscillators

Country Status (2)

Country Link
BE (1) BE557148A (en)
GB (1) GB557148A (en)

Also Published As

Publication number Publication date
BE557148A (en) 1960-03-11

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