GB928922A - Improvements in or relating to transistorized pulse generators - Google Patents
Improvements in or relating to transistorized pulse generatorsInfo
- Publication number
- GB928922A GB928922A GB32774/60A GB3277460A GB928922A GB 928922 A GB928922 A GB 928922A GB 32774/60 A GB32774/60 A GB 32774/60A GB 3277460 A GB3277460 A GB 3277460A GB 928922 A GB928922 A GB 928922A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- transistor
- square loop
- winding
- transformer
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5383—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement
-
- 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)
- Amplifiers (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
928,922. Transistor oscillator circuits. PHILIPS ELECTRICAL INDUSTRIES Ltd. Sept. 23, 1960 [Sept. 26, 1959], No. 32774/60. Class 40 (6). A pulse generator comprises a transistor having in its output current circuit an inductance which determines the rate of rise of output current and which provides positive feed-back, the circuit also including a winding on a square loop core which, when the output current exceeds a predetermined value, changes its state and initiates the cutting off of the transistor. In Fig. 1 two transistors 1 and 2 conduct alternately and are connected to an output transformer 5 which determines the rate of rise of current in the transistors when they become conducting and which provide feed-back to the opposite bases. A square loop core 10 is threaded by the emitter circuit leads so that when the current is such that the core changes its state a sudden reduction in the primary voltage of the transformer 3 takes place so that a reversal of the state of conduction of the transistors is initiated. This prevents the current spike which normally occurs at this point in the cycle. In Fig. 3 (not shown) the square loop core windings are arranged in the circuit connection between the right-hand terminal of battery 7 and winding 3. In Fig. 4 positive feed-back is provided by capacitors 11 and 12 and two square loop cores are provided, the resetting of the cords being effected by the opposite circuit through a coupling loop 17. A single ended circuit (Fig. 5, not shown) comprises an auto transformer positive feed-back path and a biasing winding connected to the supply source to re-set the square loop core when the transistor is not conducting. A further embodiment (Fig. 6, not shown) uses positive feed-back from a transformer connected in series with the secondary of the output transformer and the load and a square loop core winding in the emitter circuit biased by a permanent magnet to one state when the transistor is non-conducting. Appropriate biasing is applied to the transistor to ensure starting. It is stated that the square loop core winding could alternatively be arranged in the base circuit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL243791 | 1959-09-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB928922A true GB928922A (en) | 1963-06-19 |
Family
ID=19751952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32774/60A Expired GB928922A (en) | 1959-09-26 | 1960-09-23 | Improvements in or relating to transistorized pulse generators |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS3810862B1 (en) |
| CH (1) | CH387698A (en) |
| DE (1) | DE1146528B (en) |
| ES (1) | ES261214A1 (en) |
| FR (1) | FR1268236A (en) |
| GB (1) | GB928922A (en) |
| NL (1) | NL243791A (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1033618B (en) * | 1955-03-31 | 1958-07-10 | Sinner A G | Process for the production of yeast |
| US2748274A (en) * | 1955-05-23 | 1956-05-29 | Clevite Corp | Transistor oscillator with current transformer feedback network |
| US2774878A (en) * | 1955-08-29 | 1956-12-18 | Honeywell Regulator Co | Oscillators |
-
0
- NL NL243791D patent/NL243791A/xx unknown
-
1960
- 1960-09-22 DE DEN18958A patent/DE1146528B/en active Pending
- 1960-09-23 CH CH1077160A patent/CH387698A/en unknown
- 1960-09-23 GB GB32774/60A patent/GB928922A/en not_active Expired
- 1960-09-23 FR FR839412A patent/FR1268236A/en not_active Expired
- 1960-09-23 ES ES0261214A patent/ES261214A1/en not_active Expired
- 1960-09-26 JP JP3905260A patent/JPS3810862B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| ES261214A1 (en) | 1960-11-16 |
| CH387698A (en) | 1965-02-15 |
| FR1268236A (en) | 1961-07-28 |
| JPS3810862B1 (en) | 1963-07-01 |
| DE1146528B (en) | 1963-04-04 |
| NL243791A (en) |
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