GB530032A - Improvements in control systems for electron microscopes - Google Patents

Improvements in control systems for electron microscopes

Info

Publication number
GB530032A
GB530032A GB17443/39A GB1744339A GB530032A GB 530032 A GB530032 A GB 530032A GB 17443/39 A GB17443/39 A GB 17443/39A GB 1744339 A GB1744339 A GB 1744339A GB 530032 A GB530032 A GB 530032A
Authority
GB
United Kingdom
Prior art keywords
coil
june
transformer
actuating
control systems
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
GB17443/39A
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.)
Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten mbH
Original Assignee
Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten mbH
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 Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten mbH filed Critical Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten mbH
Publication of GB530032A publication Critical patent/GB530032A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/02—Details
    • H01J37/24—Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

530,032. Control systems for space discharge apparatus. FIDES GES. FUR DIE VERWALTUNG UND VERWERTUNG VON GEWERBLICHEN SCHUTZRECHTEN. June 14, 1939, No. 17443. Convention date, June 14, 1938 [Class 38 (iv)] Switching control.-To prevent the destruction of foils supporting an object in an electron microscope the condenser (focussing) coil is not energized until full operating voltage is on the electron beam. A drum controller 13 closes in sequence the circuits of the following: (1) An illuminating lamp 26, (2) a vacuum tester 10, (3) a coil 30 actuating a switch 7 for cathode heating and for the Wehnelt cylinders, (4) a motor 11 actuating an earthing rod 12 which in its lowest position permits the closure of the primary circuit of the transformer 8, (5) the primary circuit of the transformer 8, (6) the condenser coil 3. These operations are followed by the 'opening of the circuit of the lamp 26. To de-energize the microscope the controller is operated in the reverse sense.
GB17443/39A 1938-06-14 1939-06-14 Improvements in control systems for electron microscopes Expired GB530032A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE530032X 1938-06-14

Publications (1)

Publication Number Publication Date
GB530032A true GB530032A (en) 1940-12-03

Family

ID=6554335

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17443/39A Expired GB530032A (en) 1938-06-14 1939-06-14 Improvements in control systems for electron microscopes

Country Status (5)

Country Link
US (1) US2253864A (en)
BE (1) BE434855A (en)
FR (1) FR856126A (en)
GB (1) GB530032A (en)
NL (1) NL52144C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2443107A (en) * 1945-07-30 1948-06-08 Rca Corp Electron optical system and method
US2548791A (en) * 1945-10-19 1951-04-10 Ralph H Hoglund Automatic focusing circuit
NL67115C (en) * 1946-01-12
US2635208A (en) * 1948-04-21 1953-04-14 John M Cage Television circuit
US2626988A (en) * 1948-10-07 1953-01-27 Bendix Aviat Corp Power supply arrangement for television receivers
US2543719A (en) * 1949-07-29 1951-02-27 Rca Corp Deflection circuit

Also Published As

Publication number Publication date
US2253864A (en) 1941-08-26
NL52144C (en)
FR856126A (en) 1940-05-30
BE434855A (en)

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