GB872128A - Improvements in or relating to pulsed current generating circuit arrangements - Google Patents
Improvements in or relating to pulsed current generating circuit arrangementsInfo
- Publication number
- GB872128A GB872128A GB700460A GB700460A GB872128A GB 872128 A GB872128 A GB 872128A GB 700460 A GB700460 A GB 700460A GB 700460 A GB700460 A GB 700460A GB 872128 A GB872128 A GB 872128A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- pulse
- blocking oscillator
- load
- conductive
- 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
- 230000000903 blocking effect Effects 0.000 abstract 4
- 238000004804 winding Methods 0.000 abstract 2
- 239000003990 capacitor Substances 0.000 abstract 1
- 230000001419 dependent effect Effects 0.000 abstract 1
- 239000011159 matrix material Substances 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
- H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
- H03K3/30—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using a transformer for feedback, e.g. blocking oscillator
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Electronic Switches (AREA)
Abstract
872,128. Transistor pulse circuits. TELEFUNKEN G.m.b.H. Feb. 29, 1960 [March 4, 1959], No. 7004/60. Class 40(6) A constant current pulse generator comprises a pair of transistors 9, 12 in series with a common inductor 14, transistor 12 being normally conductive and transistor 9 normally non-conductive so that no current flows through the load 10 until a pulse is received from a blocking oscillator 1 which cuts off transistor 12 and drives transistor 9 into conduction. The constant current through the inductor 14 is thus switched through the load 10 for the duration of the pulse. In the system described, the load 10 takes the form of an input wire of a magnetic storage matrix. The monostable blocking oscillator 1 is normally cut off until a negative pulse is received at terminal Ur, when transistor 1 becomes conductive for a period dependent on the characteristics of transformer 2. At the onset of the pulse from the blocking oscillator 1, transistor 12 is cut off by a pulse from the tertiary winding of transformer 2 and transistor 9 is rendered conductive via capacitor 8. The constant current through inductor 14 is thus switched through the magnetic store winding 10 and remains constant until the end of the blocking oscillator pulse when the circuit 9, 12 is restored to its normal state. The biasing circuit for transistor 1 comprising elements 3, 4, 5, 6 may be replaced by a positive feed to the base.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET0016356 | 1959-03-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB872128A true GB872128A (en) | 1961-07-05 |
Family
ID=7548222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB700460A Expired GB872128A (en) | 1959-03-04 | 1960-02-29 | Improvements in or relating to pulsed current generating circuit arrangements |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1069682B (en) |
| FR (1) | FR1249095A (en) |
| GB (1) | GB872128A (en) |
| NL (1) | NL248842A (en) |
-
0
- NL NL248842D patent/NL248842A/xx unknown
- DE DENDAT1069682D patent/DE1069682B/de active Pending
-
1960
- 1960-02-24 FR FR819383A patent/FR1249095A/en not_active Expired
- 1960-02-29 GB GB700460A patent/GB872128A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1249095A (en) | 1960-12-23 |
| NL248842A (en) | |
| DE1069682B (en) | 1959-11-26 |
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