GB887518A - Improvements relating to transistor electric pulse lengthening circuits - Google Patents
Improvements relating to transistor electric pulse lengthening circuitsInfo
- Publication number
- GB887518A GB887518A GB1046058A GB1046058A GB887518A GB 887518 A GB887518 A GB 887518A GB 1046058 A GB1046058 A GB 1046058A GB 1046058 A GB1046058 A GB 1046058A GB 887518 A GB887518 A GB 887518A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- pulse
- base
- emitter
- rectifiers
- 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
- 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
- H03K3/33—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of semiconductor devices exhibiting hole storage or enhancement 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)
- Rectifiers (AREA)
- Electrotherapy Devices (AREA)
Abstract
887,518. Transistor pulse lengthening circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. March 24, 1959 [April 1, 1958], No. 10460/58. Class 40(6). In a pulse lengthening circuit the input pulse is applied through a one way device to the base of a transistor to cause hole storage to maintain collector-emitter current flow after the termination of the pulse, producing an output pulse that is terminated by a cut-off pulse applied to the base. In Fig. 1 a 0.2 microsecond pulse applied to terminals it causes transistor T1 and so transistor T2 to conduct. At the end of the pulse, transistor T1 ceases to conduct and diode rf6 becomes non-conducting so that the base of transistor T2 is effectively open circuited. Hole storage maintains current flow in the collector-emitter path of transistor T2 until it is terminated after 0.8 microseconds by a positive pulse applied through rectifier rf5 to the base. In the normal non-conducting condition of the circuit, rectifiers rf3 and rf4 clamp the emitter potentials to earth and rectifiers rf1 and rf2 ensure that points j1 and j2 are slightly positive with respect to the corresponding emitter electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1046058A GB887518A (en) | 1958-04-01 | 1958-04-01 | Improvements relating to transistor electric pulse lengthening circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1046058A GB887518A (en) | 1958-04-01 | 1958-04-01 | Improvements relating to transistor electric pulse lengthening circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB887518A true GB887518A (en) | 1962-01-17 |
Family
ID=9968274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1046058A Expired GB887518A (en) | 1958-04-01 | 1958-04-01 | Improvements relating to transistor electric pulse lengthening circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB887518A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3283259A (en) * | 1963-01-23 | 1966-11-01 | Rca Corp | Pulse distribution amplifier |
-
1958
- 1958-04-01 GB GB1046058A patent/GB887518A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3283259A (en) * | 1963-01-23 | 1966-11-01 | Rca Corp | Pulse distribution amplifier |
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