GB201114148D0 - Pulse processing - Google Patents
Pulse processingInfo
- Publication number
- GB201114148D0 GB201114148D0 GBGB1114148.8A GB201114148A GB201114148D0 GB 201114148 D0 GB201114148 D0 GB 201114148D0 GB 201114148 A GB201114148 A GB 201114148A GB 201114148 D0 GB201114148 D0 GB 201114148D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulse
- photodiode
- radiant energy
- input voltage
- negative
- 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.)
- Withdrawn
Links
- 239000003990 capacitor Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 210000003127 knee Anatomy 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 abstract 1
- 229910010271 silicon carbide Inorganic materials 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/17—Circuit arrangements not adapted to a particular type of detector
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/01—Shaping pulses
- H03K5/04—Shaping pulses by increasing duration; by decreasing duration
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/153—Arrangements in which a pulse is delivered at the instant when a predetermined characteristic of an input signal is present or at a fixed time interval after this instant
- H03K5/1536—Zero-crossing detectors
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Light Receiving Elements (AREA)
- Amplifiers (AREA)
Abstract
An LED D1 is biased near its knee voltage so that a negative input voltage pulse Vin causes radiant energy to be emitted to a Silicon Carbide photodiode D2. A following positive overshoot pulse (4, figure 1) has no optical effect and so does not cancel the effect of the negative pulse. The relatively long fall time of the photodiodes response to the radiant energy provides a current output pulse which is longer than the input voltage pulse Vin. Alternatively, the photodiode may be operated in photovoltaic mode (figure 5), or a phototransistor or photomultiplier may be used. The photodiode output pulse may be further extended by a charge amplifier 10 comprising an operational amplifier with resistor-capacitor feedback (figure 3). The stretched pulses may be processed using slower and simpler components. Amplitude information is not lost. The input pulses may be from proton or neutron detectors.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1114148.8A GB2493742A (en) | 2011-08-17 | 2011-08-17 | A pulse stretcher for nuclear pulse measurements, using photo-coupler response time |
| EP12761774.4A EP2745401A1 (en) | 2011-08-17 | 2012-08-15 | Pulse processing |
| PCT/GB2012/051985 WO2013024285A1 (en) | 2011-08-17 | 2012-08-15 | Pulse processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1114148.8A GB2493742A (en) | 2011-08-17 | 2011-08-17 | A pulse stretcher for nuclear pulse measurements, using photo-coupler response time |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201114148D0 true GB201114148D0 (en) | 2011-10-05 |
| GB2493742A GB2493742A (en) | 2013-02-20 |
Family
ID=44800438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1114148.8A Withdrawn GB2493742A (en) | 2011-08-17 | 2011-08-17 | A pulse stretcher for nuclear pulse measurements, using photo-coupler response time |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2745401A1 (en) |
| GB (1) | GB2493742A (en) |
| WO (1) | WO2013024285A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020141291A1 (en) * | 2019-01-04 | 2020-07-09 | The Secretary Of State For Defence | Electromagnetic pulse detector and method of use |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1240294B (en) * | 1961-11-14 | 1967-05-11 | Licentia Gmbh | Circuit arrangement for converting short-term light pulses into electrical signals |
| US3902060A (en) * | 1972-04-04 | 1975-08-26 | Westinghouse Electric Corp | Self-optimizing biasing feedback for photo-electric transmission systems |
| JPS56123125A (en) * | 1980-03-04 | 1981-09-28 | Toshiba Corp | Photoelectric detector |
| JPS62110315A (en) * | 1985-11-08 | 1987-05-21 | Koito Ind Co Ltd | Pulse generating circuit |
| US5225884A (en) * | 1991-06-05 | 1993-07-06 | Optical Associates, Inc. | Excimer laser pulse analyzer and method |
| JP3257479B2 (en) * | 1997-10-24 | 2002-02-18 | 村田機械株式会社 | Dial-in terminal device |
| FR2890750B1 (en) * | 2005-09-09 | 2007-11-02 | Commissariat Energie Atomique | DEVICE FOR MEASURING VERY BROWN CURRENT PULSES |
| GB0916762D0 (en) * | 2009-09-24 | 2009-11-04 | Gigle Semiconductor Ltd | Electrical isolators |
-
2011
- 2011-08-17 GB GB1114148.8A patent/GB2493742A/en not_active Withdrawn
-
2012
- 2012-08-15 WO PCT/GB2012/051985 patent/WO2013024285A1/en active Application Filing
- 2012-08-15 EP EP12761774.4A patent/EP2745401A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013024285A1 (en) | 2013-02-21 |
| EP2745401A1 (en) | 2014-06-25 |
| GB2493742A (en) | 2013-02-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |