GB915021A - Improvements relating to electronic switching devices - Google Patents
Improvements relating to electronic switching devicesInfo
- Publication number
- GB915021A GB915021A GB2262858A GB2262858A GB915021A GB 915021 A GB915021 A GB 915021A GB 2262858 A GB2262858 A GB 2262858A GB 2262858 A GB2262858 A GB 2262858A GB 915021 A GB915021 A GB 915021A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- grid
- july
- tap
- connected via
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
- G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/955—Proximity switches using a capacitive detector
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
915,021. Valve oscillating circuits. THOMAS INDUSTRIAL AUTOMATION Ltd. July 15, 1959 [July 15, 1958; Aug. 1, 1958], Nos. 22628/58 and 24839/58. Class 40 (6). [Also in Group XXXVI] An oscillator used in an electronic proximity switch (see Group XXXVI) comprises a valve 1 with its grid connected via condenser 6 and grid leak 7 to a tap on a grid circuit inductance 5 and its cathode connected via bias resistor 9 to a tap on a cathode circuit inductance 8. The two inductances are tuned to the same frequency and coupled together by a top capacity coupling, the condenser being included in a plug-in probe unit 2, 4. The first Provisional Specification shows a valve of screengrid type as oscillator.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2262858A GB915021A (en) | 1958-07-15 | 1958-07-15 | Improvements relating to electronic switching devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2262858A GB915021A (en) | 1958-07-15 | 1958-07-15 | Improvements relating to electronic switching devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB915021A true GB915021A (en) | 1963-01-09 |
Family
ID=10182516
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2262858A Expired GB915021A (en) | 1958-07-15 | 1958-07-15 | Improvements relating to electronic switching devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB915021A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0191137A2 (en) * | 1984-09-22 | 1986-08-20 | Heinrich Jores | Capacitive high-sensitivity sensor |
-
1958
- 1958-07-15 GB GB2262858A patent/GB915021A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0191137A2 (en) * | 1984-09-22 | 1986-08-20 | Heinrich Jores | Capacitive high-sensitivity sensor |
EP0191137A3 (en) * | 1984-09-22 | 1987-06-03 | Heinrich Jores | Capacitive high-sensitivity sensor |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB915021A (en) | Improvements relating to electronic switching devices | |
GB796075A (en) | Improvements in or relating to heterodyne mixing circuits | |
GB754713A (en) | Improvements in or relating to transistor oscillator circuits | |
GB718959A (en) | Improvements in or relating to circuit-arrangements for the frequency changing of high-frequency oscillations | |
GB648925A (en) | Improvements in or relating to discharge-tube oscillator circuits | |
GB754226A (en) | Improvements in or relating to a frequency-changing mixing circuit embodying a self-oscillating triode with intermediate-frequency feed-back | |
GB734710A (en) | Improvements in or relating to high frequency converter circuits | |
GB882590A (en) | Improvements in and relating to electric oscillation generators | |
GB774015A (en) | Improvements in or relating to frequency changing mixing circuits | |
GB851229A (en) | Improvements in or relating to self-oscillating additive mixer circuits | |
GB582130A (en) | Improvements in electric frequency changing circuits | |
GB519755A (en) | Improvements in and relating to the prevention of interference in radio receivers | |
GB928107A (en) | Improvements in oscillators | |
GB867957A (en) | Improvements in or relating to oscillators for non-sinusoidal oscillations | |
GB916013A (en) | Improvements in or relating to diode mixing circuits | |
GB552486A (en) | Improvements in or relating to mixing circuits for use in superheterodyne receivers | |
GB777533A (en) | Improvements in or relating to additive mixing circuit arrangements for frequency changing | |
GB494979A (en) | Improvements in and relating to radio frequency receiving systems | |
GB783238A (en) | Improvements in or relating to transistor mixing circuit-arrangements | |
GB869567A (en) | Reconnaissance electromagnetic survey pack and method | |
GB668676A (en) | Improvements in or relating to video detector circuits for television | |
GB880365A (en) | Improvements in and relating to electrical oscillator circuits | |
GB852252A (en) | Improvements in or relating to self oscillating mixing circuits for frequency changing | |
GB736291A (en) | Improvements in and relating to remote control of radio apparatus | |
GB628029A (en) | Improvements in mixing circuits for superheterodyne receivers |