IT999220B - DEVICE FOR PROTECTING THE POLARITY OF AN ELECTRICAL LOAD - Google Patents
DEVICE FOR PROTECTING THE POLARITY OF AN ELECTRICAL LOADInfo
- Publication number
- IT999220B IT999220B IT30948/73A IT3094873A IT999220B IT 999220 B IT999220 B IT 999220B IT 30948/73 A IT30948/73 A IT 30948/73A IT 3094873 A IT3094873 A IT 3094873A IT 999220 B IT999220 B IT 999220B
- Authority
- IT
- Italy
- Prior art keywords
- polarity
- protecting
- electrical load
- load
- electrical
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/002—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection
-
- 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
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc 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
- H02M7/217—Conversion of ac power input into dc 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
- H02M7/219—Conversion of ac power input into dc 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 in a bridge configuration
-
- 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
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc 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
- H02M7/217—Conversion of ac power input into dc 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
- H02M7/219—Conversion of ac power input into dc 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 in a bridge configuration
- H02M7/2195—Conversion of ac power input into dc 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 in a bridge configuration the switches being synchronously commutated at the same frequency of the AC input voltage
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6008—Substation equipment, e.g. for use by subscribers including speech amplifiers in the transmitter circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6016—Substation equipment, e.g. for use by subscribers including speech amplifiers in the receiver circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Measurement Of Current Or Voltage (AREA)
- Amplifiers (AREA)
- Circuits Of Receivers In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA157,645A CA954644A (en) | 1972-11-28 | 1972-11-28 | Polarity guard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT999220B true IT999220B (en) | 1976-02-20 |
Family
ID=4095111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT30948/73A IT999220B (en) | 1972-11-28 | 1973-11-05 | DEVICE FOR PROTECTING THE POLARITY OF AN ELECTRICAL LOAD |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3819951A (en) |
| JP (1) | JPS4982950A (en) |
| AU (1) | AU5994273A (en) |
| BE (1) | BE805382A (en) |
| CA (1) | CA954644A (en) |
| DE (1) | DE2345116A1 (en) |
| FR (1) | FR2208243B1 (en) |
| IL (1) | IL43027A0 (en) |
| IT (1) | IT999220B (en) |
| NL (1) | NL7314973A (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5165608U (en) * | 1974-11-18 | 1976-05-24 | ||
| DE2639601C2 (en) * | 1976-09-02 | 1985-03-07 | Siemens AG, 1000 Berlin und 8000 München | Bridge circuit with low voltage losses |
| US4086624A (en) * | 1977-06-15 | 1978-04-25 | Bell Telephone Laboratories Incorporated | Current to voltage converter |
| DE2931465C2 (en) * | 1979-08-02 | 1982-12-16 | Siemens AG, 1000 Berlin und 8000 München | Rectifier bridge circuit |
| DE3005383A1 (en) * | 1980-02-13 | 1981-08-20 | Siemens AG, 1000 Berlin und 8000 München | Semiconductor voltage doubler circuit - has two transistors of similar conductivity type operated in push=pull by zero voltage circuit |
| US4319144A (en) * | 1980-05-22 | 1982-03-09 | Bell Telephone Laboratories, Incorporated | Single polarity circuit |
| IT1211072B (en) * | 1981-06-30 | 1989-09-29 | Ates Componenti Elettron | BRIDGE TRANSISTOR RECTIFIER CIRCUIT FOR TELEPHONE USE. |
| US4423456A (en) * | 1981-11-13 | 1983-12-27 | Medtronic, Inc. | Battery reversal protection |
| US4420786A (en) * | 1981-11-16 | 1983-12-13 | Motorola, Inc. | Polarity guard circuit |
| US4473757A (en) * | 1981-12-08 | 1984-09-25 | Intersil, Inc. | Circuit means for converting a bipolar input to a unipolar output |
| IT1212518B (en) * | 1982-01-29 | 1989-11-22 | Ates Componenti Elettron | BRIDGE TRANSISTOR RECTIFIER CIRCUIT, WITH OVERCURRENT PROTECTION, FOR TELEPHONE USE. |
| US4763017A (en) * | 1985-10-21 | 1988-08-09 | American Standard Inc. | Electronic bipolar interface circuit |
| CH677408A5 (en) * | 1988-11-18 | 1991-05-15 | Baumer Electric Ag | |
| GB9211031D0 (en) * | 1992-05-22 | 1992-07-08 | Plessey Telecomm | Telephone circuit |
| TW479904U (en) * | 2000-10-09 | 2002-03-11 | Sunplus Technology Co Ltd | Diode circuit to simulate zero cutoff voltage and the rectifying circuit having zero cutoff voltage characteristics |
| JP2005134283A (en) * | 2003-10-31 | 2005-05-26 | Aisin Seiki Co Ltd | Current output sensor of two-wire system, and ic for the same |
| US8471414B2 (en) * | 2005-06-24 | 2013-06-25 | The Flewelling Ford Family Trust | Low impedance polarity conversion circuit |
| US8054049B1 (en) * | 2007-08-30 | 2011-11-08 | Avaya Inc. | Using battery orientation to control mode of operation |
| US8792260B2 (en) * | 2010-09-27 | 2014-07-29 | Semiconductor Energy Laboratory Co., Ltd. | Rectifier circuit and semiconductor device using the same |
| KR101825567B1 (en) * | 2011-08-31 | 2018-02-05 | 삼성전자 주식회사 | Apparatus and method for controlling a microphone in terminal device |
| JP5937436B2 (en) * | 2012-06-28 | 2016-06-22 | アルプス電気株式会社 | Protection circuit |
| DE102015207677A1 (en) * | 2015-04-27 | 2016-10-27 | Tridonic Gmbh & Co Kg | Bulb converter with polarity reversal protection |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL6712329A (en) * | 1967-09-08 | 1969-03-11 | ||
| DE1941363A1 (en) * | 1969-08-14 | 1971-02-25 | Licentia Gmbh | Circuit arrangement for the polarity-correct connection of a speech capsule equipped with an amplifier in telephone systems |
| US3700999A (en) * | 1972-01-11 | 1972-10-24 | Us Army | Automatic battery polarizing circuit |
-
1972
- 1972-11-28 CA CA157,645A patent/CA954644A/en not_active Expired
- 1972-12-27 US US00318760A patent/US3819951A/en not_active Expired - Lifetime
-
1973
- 1973-08-20 IL IL43027A patent/IL43027A0/en unknown
- 1973-09-03 AU AU59942/73A patent/AU5994273A/en not_active Expired
- 1973-09-06 FR FR7332203A patent/FR2208243B1/fr not_active Expired
- 1973-09-07 DE DE19732345116 patent/DE2345116A1/en active Pending
- 1973-09-27 BE BE136098A patent/BE805382A/en unknown
- 1973-10-16 JP JP48115418A patent/JPS4982950A/ja active Pending
- 1973-10-31 NL NL7314973A patent/NL7314973A/xx unknown
- 1973-11-05 IT IT30948/73A patent/IT999220B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| FR2208243B1 (en) | 1976-10-01 |
| FR2208243A1 (en) | 1974-06-21 |
| DE2345116A1 (en) | 1974-06-27 |
| AU5994273A (en) | 1975-03-06 |
| JPS4982950A (en) | 1974-08-09 |
| IL43027A0 (en) | 1973-11-28 |
| CA954644A (en) | 1974-09-10 |
| US3819951A (en) | 1974-06-25 |
| NL7314973A (en) | 1974-05-30 |
| BE805382A (en) | 1974-01-16 |
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