GB784444A - Improvements in or relating to obtaining a low frequency alternating current from a direct current supply - Google Patents
Improvements in or relating to obtaining a low frequency alternating current from a direct current supplyInfo
- Publication number
- GB784444A GB784444A GB18191/55A GB1819155A GB784444A GB 784444 A GB784444 A GB 784444A GB 18191/55 A GB18191/55 A GB 18191/55A GB 1819155 A GB1819155 A GB 1819155A GB 784444 A GB784444 A GB 784444A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frequency alternating
- relating
- obtaining
- low frequency
- direct current
- 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
- H02M7/538—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 push-pull configuration
- H02M7/5381—Parallel type
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1203—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier being a single transistor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1206—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification
- H03B5/1218—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification the generator being of the balanced type
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1296—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the feedback circuit comprising a transformer
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
784,444. Substation equipment. PLESSEY CO., Ltd. June 25, 1956 [June 23, 1955], No. 18191/55. Class 40 (4). [Also in Group XL (c)] A substation bell is rung by 17 cycle current derived from a transistor oscillator TS1, Fig. 2, whose output feeds a push-pull class B transistor amplifier TS2, TS3 whose output is taken off transformer TR2 to ring the bell. The switch SW may be replaced by a further transistor TS4, Fig. 3, which is caused to become conducting by the application of high frequency alternating potential to its base. The circuit is suitable for use in mines.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB18191/55A GB784444A (en) | 1955-06-23 | 1955-06-23 | Improvements in or relating to obtaining a low frequency alternating current from a direct current supply |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB18191/55A GB784444A (en) | 1955-06-23 | 1955-06-23 | Improvements in or relating to obtaining a low frequency alternating current from a direct current supply |
Publications (1)
Publication Number | Publication Date |
---|---|
GB784444A true GB784444A (en) | 1957-10-09 |
Family
ID=10108218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18191/55A Expired GB784444A (en) | 1955-06-23 | 1955-06-23 | Improvements in or relating to obtaining a low frequency alternating current from a direct current supply |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB784444A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2953737A (en) * | 1958-01-14 | 1960-09-20 | Eugene H Beach | Transistor power supply |
US2999972A (en) * | 1958-03-13 | 1961-09-12 | Dresser Ind | Stabilized power supply |
US3196337A (en) * | 1959-10-19 | 1965-07-20 | Kinetics Corp | Electrical inverter system |
DE1244941B (en) * | 1960-01-14 | 1967-07-20 | Licentia Gmbh | Externally controlled push-pull changeover belt |
-
1955
- 1955-06-23 GB GB18191/55A patent/GB784444A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2953737A (en) * | 1958-01-14 | 1960-09-20 | Eugene H Beach | Transistor power supply |
US2999972A (en) * | 1958-03-13 | 1961-09-12 | Dresser Ind | Stabilized power supply |
US3196337A (en) * | 1959-10-19 | 1965-07-20 | Kinetics Corp | Electrical inverter system |
DE1244941B (en) * | 1960-01-14 | 1967-07-20 | Licentia Gmbh | Externally controlled push-pull changeover belt |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB784444A (en) | Improvements in or relating to obtaining a low frequency alternating current from a direct current supply | |
GB770936A (en) | Improvements in switching circuits for communication systems | |
GB710839A (en) | Electric pulse rectifier circuits | |
CA536063A (en) | Carrier current generating equipment | |
GB720706A (en) | Electric wave generator circuits | |
GB844169A (en) | Improvements relating to voltage measuring apparatus | |
ES234714A3 (en) | A condenser testing device (Machine-translation by Google Translate, not legally binding) | |
GB1059606A (en) | A ringer | |
GB714626A (en) | Improvements relating to apparatus for the production of a substantially constant voltage from a variable voltage source | |
GB851178A (en) | Improvements in electrical read-out devices for indicating decimal numerical values | |
CA530291A (en) | Circuit for transducing or generating electrical oscillations of ultra-high-frequency | |
CA487052A (en) | Transformerless sawtooth current generator | |
CA488015A (en) | Circuit arrangement for generating phase-modulated oscillations | |
CA482984A (en) | Monitoring arrangement for frequency modulation signal generators | |
CA481486A (en) | Circuit for the generation of a linearly varying current | |
GB534774A (en) | Improvements relating to time base circuits | |
AU159002B2 (en) | Improvements to or relating to time base transformer circuit arrangements ofthe booster-damper type | |
CA481963A (en) | Oscillation generators under control of applied impulses | |
GB936738A (en) | Improvements relating to cathode ray oscilloscope circuits | |
AU163154B2 (en) | Electrical oscillation generator | |
CA489040A (en) | Electrical oscillation generators | |
CA542276A (en) | Circuit arrangement generating sawtooth current waves | |
AU1792453A (en) | Improvements to or relating to time base transformer circuit arrangements ofthe booster-damper type | |
CA480343A (en) | Current limit generator | |
AU1492652A (en) | Electrical oscillation generator |