GB540941A - Improvements in or relating to electric oscillation generating circuits - Google Patents

Improvements in or relating to electric oscillation generating circuits

Info

Publication number
GB540941A
GB540941A GB2874/40A GB287440A GB540941A GB 540941 A GB540941 A GB 540941A GB 2874/40 A GB2874/40 A GB 2874/40A GB 287440 A GB287440 A GB 287440A GB 540941 A GB540941 A GB 540941A
Authority
GB
United Kingdom
Prior art keywords
valve
common
varying
resistance
impedance
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
GB2874/40A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2874/40A priority Critical patent/GB540941A/en
Priority to US378530A priority patent/US2300996A/en
Publication of GB540941A publication Critical patent/GB540941A/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
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/10—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being vacuum tube

Abstract

540,941. Valve generating circuits. VANDERLYN, P. B., and WHITE, E. L. C. Feb. 15, 1940, No. 2874. [Class 40 (v)] A generator comprises a pair of valves 1, 2 with an impedance R1 common to their cathode circuits, having a high value compared with the reciprocal of the valve mutual conductance. The frequency determining circuit L2, C2 in the anode circuit of one valve and is coupled to the grid of the other valve. Instead of a parallel tuned circuit a delay network may constitute the frequency determining circuit. The amplitude may be controlled by varying the feed current by varying the bias either by varying the common cathode resistance or by a potentiometer. As shown automatic bias control is obtained by rectifying part of the output by diode G to which a variable delay voltage is applied. The common impedance may be a resistance, or a choke, or a complex network comprising an inductance in series with a condenser the whole being shunted by an inductance in series with a parallel combination of a resistance and a further condenser Fig. 2 (not shown). Alternatively the common impedance may be a pentode valve the grid bias of which may be automatically controlled. Reference has been directed by the Comptroller to Specification 541,149.
GB2874/40A 1940-02-15 1940-02-15 Improvements in or relating to electric oscillation generating circuits Expired GB540941A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2874/40A GB540941A (en) 1940-02-15 1940-02-15 Improvements in or relating to electric oscillation generating circuits
US378530A US2300996A (en) 1940-02-15 1941-02-12 Electric oscillation generating circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2874/40A GB540941A (en) 1940-02-15 1940-02-15 Improvements in or relating to electric oscillation generating circuits

Publications (1)

Publication Number Publication Date
GB540941A true GB540941A (en) 1941-11-06

Family

ID=9747628

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2874/40A Expired GB540941A (en) 1940-02-15 1940-02-15 Improvements in or relating to electric oscillation generating circuits

Country Status (2)

Country Link
US (1) US2300996A (en)
GB (1) GB540941A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668240A (en) * 1943-11-24 1954-02-02 Jr George A Brettell Noninverting oscillator
US2432516A (en) * 1943-12-30 1947-12-16 Bell Telephone Labor Inc Keyed pulse generator
US2419772A (en) * 1944-06-30 1947-04-29 Rca Corp Pulse generator system
US2426996A (en) * 1944-08-17 1947-09-09 Bell Telephone Labor Inc Frequency modulation
BE475401A (en) * 1945-09-14
US2722602A (en) * 1951-03-15 1955-11-01 Myron G Pawley Saturable reactor controlled delay multivibrator
US2778574A (en) * 1952-06-11 1957-01-22 Honeywell Regulator Co Oscillating control apparatus
US3267390A (en) * 1961-04-17 1966-08-16 Automatic Elect Lab Sweep frequency generator and frequency controlling device therefor

Also Published As

Publication number Publication date
US2300996A (en) 1942-11-03

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