GB1156893A - Microwave Apparatus - Google Patents

Microwave Apparatus

Info

Publication number
GB1156893A
GB1156893A GB2382/68A GB238268A GB1156893A GB 1156893 A GB1156893 A GB 1156893A GB 2382/68 A GB2382/68 A GB 2382/68A GB 238268 A GB238268 A GB 238268A GB 1156893 A GB1156893 A GB 1156893A
Authority
GB
United Kingdom
Prior art keywords
attenuator
amplifier
arc
output
extinguished
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
GB2382/68A
Inventor
Norman Harwood Williams
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates Inc
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 Varian Associates Inc filed Critical Varian Associates Inc
Publication of GB1156893A publication Critical patent/GB1156893A/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
    • H03B5/18—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance
    • 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
    • H03B9/00—Generation of oscillations using transit-time effects
    • H03B9/01—Generation of oscillations using transit-time effects using discharge tubes
    • H03B9/04—Generation of oscillations using transit-time effects using discharge tubes using a klystron
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L5/00—Automatic control of voltage, current, or power
    • H03L5/02—Automatic control of voltage, current, or power of power

Landscapes

  • Constitution Of High-Frequency Heating (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Amplifiers (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Microwave Amplifiers (AREA)

Abstract

1,156,893. Protective systems. VARIAN ASSOCIATES. 16 Jan., 1968 [16 Jan., 1967; 24 Nov., 1967], No. 2382/68. Heading H2K. [Also in Divisions H3 and G3] A microwave oscillator (see Division H3) comprises an amplifier, e.g. klystron 2 with a feedback path feeding power amplified by the amplifier to the input, to sustain oscillation and including an attenuator 5b, e.g. a PIN diode. An arc protector is incorporated for sensing an arc in the output waveguide, comprising a photo-cell 10 disposed in the waveguide, any output from which is fed via an amplifier to control attenuator 5b so as to reduce the power level of the oscillator until the arc is extinguished. Alternatively (Fig. 6, not shown), the photo-cell output is fed via an amplifier to the gate of a S.C.R. connected in series between a power supply and the variable attenuator, so as to cause the former to deliver a voltage to the attenuator reducing the attenuator loop gain below unity, stopping oscillation. When the arc is extinguished the S.C.R. is returned to its "off" state by opening a switch in the power supply lead, thereby removing the drive to the attenuator and allowing normal operation to be resumed.
GB2382/68A 1967-01-16 1968-01-16 Microwave Apparatus Expired GB1156893A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US60965167A 1967-01-16 1967-01-16
US68894267A 1967-11-24 1967-11-24

Publications (1)

Publication Number Publication Date
GB1156893A true GB1156893A (en) 1969-07-02

Family

ID=27086086

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2382/68A Expired GB1156893A (en) 1967-01-16 1968-01-16 Microwave Apparatus

Country Status (7)

Country Link
JP (1) JPS4931584B1 (en)
CH (1) CH502021A (en)
DE (1) DE1616352C3 (en)
FR (1) FR1551508A (en)
GB (1) GB1156893A (en)
NL (1) NL6800326A (en)
SE (1) SE333758B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126098A (en) * 1982-08-13 1984-03-21 Metronex Engineering Pty Ltd Diathermy apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5427875U (en) * 1977-07-25 1979-02-23
CN113645729A (en) * 2021-05-24 2021-11-12 中国电子科技集团公司第十三研究所 Multi-channel microwave generating device of phase control system and frequency source chip thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126098A (en) * 1982-08-13 1984-03-21 Metronex Engineering Pty Ltd Diathermy apparatus

Also Published As

Publication number Publication date
DE1616352A1 (en) 1969-10-23
DE1616352C3 (en) 1974-03-21
JPS4931584B1 (en) 1974-08-22
DE1616352B2 (en) 1973-08-23
CH502021A (en) 1971-01-15
FR1551508A (en) 1968-12-27
SE333758B (en) 1971-03-29
NL6800326A (en) 1968-07-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee