GB708233A - A device independent of voltage variations for indicating radiation energy - Google Patents
A device independent of voltage variations for indicating radiation energyInfo
- Publication number
- GB708233A GB708233A GB29085/52A GB2908552A GB708233A GB 708233 A GB708233 A GB 708233A GB 29085/52 A GB29085/52 A GB 29085/52A GB 2908552 A GB2908552 A GB 2908552A GB 708233 A GB708233 A GB 708233A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- valve
- positive
- nov
- relay
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
- H01J40/02—Details
- H01J40/14—Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
- G05B11/01—Automatic controllers electric
- G05B11/012—Automatic controllers electric details of the transmission means
- G05B11/013—Automatic controllers electric details of the transmission means using discharge tubes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
708,233. Measuring radiation photo-electrically. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Nov. 18, 1952 [Nov. 19, 1951], No. 29085/52. Class 40 (3) In a device for deenergizing a relay 12 in the anode circuit of a thermionic valve 8 when a photoelectric cell 10 receives a certain light intensity, the grid of the valve, which is A.C. fed from a transformer 1, receives during those half cycles when its anode is positive with respect to its cathode a positive voltage from adjustable resistor 4 and a negative voltage produced by charging a condenser 6 through photocell 10 during the previous half cycle. Thus a particular value of illumination will hold valve 8 blocked during its positive half cycle and relay 12 unoperated. If the current of photo-cell 10 which is gas filled varies linearly with anode potential the resistors may be so chosen as to make the apparatus independent of voltage fluctuations. Further amplifying stages may be added; for example, a thyratron may have its grid connected to the anode of valve 8, coil 12 being replaced by a resistor and the coil inserted in the thyratron anode circuit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE708233X | 1951-11-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB708233A true GB708233A (en) | 1954-04-28 |
Family
ID=20315645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29085/52A Expired GB708233A (en) | 1951-11-19 | 1952-11-18 | A device independent of voltage variations for indicating radiation energy |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB708233A (en) |
-
1952
- 1952-11-18 GB GB29085/52A patent/GB708233A/en not_active Expired
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