GB887591A - Improvements in or relating to pulse generators - Google Patents
Improvements in or relating to pulse generatorsInfo
- Publication number
- GB887591A GB887591A GB1771459A GB1771459A GB887591A GB 887591 A GB887591 A GB 887591A GB 1771459 A GB1771459 A GB 1771459A GB 1771459 A GB1771459 A GB 1771459A GB 887591 A GB887591 A GB 887591A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- pulse
- base
- collector
- emitter
- 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
- 239000003990 capacitor Substances 0.000 abstract 3
- 230000000295 complement effect Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/335—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of semiconductor devices with more than two electrodes and exhibiting avalanche effect
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Electronic Switches (AREA)
Abstract
887,591. Transistor pulse shaping circuits. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. May 10, 1960 [May 25, 1959], No. 17714/59. Class 40(6). A pulse producing circuit comprises an avalanche transistor J1 with its emitter and collector connected to a switching means, e.g. a second transistor J2, the collector being connected by a capacitor Cl, such that the switching means closes upon the triggering of transistor Jl to produce an output across the load R2. Diodes Dl, D2 are provided to normally hold J1, J2 cut off, and application of a trigger pulse to J1 produces a pulse at the base of J2 (Fig. 2). In order to increase the rise time of the collector current -of J2, the capacitor C1 is provided to force the collector of J2 positive. After C1 has become discharged, J2 may be maintained in a bottomed condition by hold J1 conductive or by a further current supply to the base of J2. To vary the amplitude of the output pulse, the emitter of J2 may be taken to a variable positive potential instead of earth. In a modification, Fig. 3 (not shown), the single transistor J2 is replaced by a pair of complementary transistors, with the emitter of J1 connected to the base of the PNP, and the capacitor Cl connected to the base of the NPN. If wide pulses are not required, the switching may be provided by a bridge rectifier circuit, Fig. 4 (not shown).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1771459A GB887591A (en) | 1959-05-25 | 1959-05-25 | Improvements in or relating to pulse generators |
| FR827875A FR1257496A (en) | 1959-05-25 | 1960-05-20 | Improvements to pulse generators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1771459A GB887591A (en) | 1959-05-25 | 1959-05-25 | Improvements in or relating to pulse generators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB887591A true GB887591A (en) | 1962-01-17 |
Family
ID=10099923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1771459A Expired GB887591A (en) | 1959-05-25 | 1959-05-25 | Improvements in or relating to pulse generators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB887591A (en) |
-
1959
- 1959-05-25 GB GB1771459A patent/GB887591A/en not_active Expired
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