CA2240414A1 - Isolated electrical power supply - Google Patents
Isolated electrical power supplyInfo
- Publication number
- CA2240414A1 CA2240414A1 CA 2240414 CA2240414A CA2240414A1 CA 2240414 A1 CA2240414 A1 CA 2240414A1 CA 2240414 CA2240414 CA 2240414 CA 2240414 A CA2240414 A CA 2240414A CA 2240414 A1 CA2240414 A1 CA 2240414A1
- Authority
- CA
- Canada
- Prior art keywords
- lead
- transformer
- earth ground
- tied
- primary
- 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.)
- Granted
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Regulation Of General Use Transformers (AREA)
Abstract
An isolated power supply for protecting electrical devices from transient voltages and currents is disclosed. Specifically, the filter has a toroid (110) and resistor (102) which are used in conjunction with an isolator transformer (30). The transformer's secondary windings (124) are coupled to the electrical load (12) sought to be isolated. The primary windings (122) of the transformer are tied to an alternating current source (14) with an earth ground lead (18). The primary shield lead (138) of the transformer is tied to the earth ground lead. The secondary shield lead (134) of the transformer is also tied to the earth ground. A toroid inductor and resistor in parallel are coupled between the secondary neutral lead (68) and the secondary ground lead (70) to shunt off current or voltage spikes. The earth ground is part of a chassis which prevents spark jump insuring the isolation of the power source.
The isolator thus provides equal voltage potential between the secondary lead and the primary earth ground at frequencies of less than 1 kHz.
The isolator thus provides equal voltage potential between the secondary lead and the primary earth ground at frequencies of less than 1 kHz.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/571,331 | 1995-12-13 | ||
US08/571,331 US5689180A (en) | 1995-12-13 | 1995-12-13 | Isolated electrical power supply |
PCT/US1996/020025 WO1997022168A1 (en) | 1995-12-13 | 1996-12-10 | Isolated electrical power supply |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2240414A1 true CA2240414A1 (en) | 1997-06-19 |
CA2240414C CA2240414C (en) | 2007-01-23 |
Family
ID=29406136
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2240414 Expired - Fee Related CA2240414C (en) | 1995-12-13 | 1996-12-10 | Isolated electrical power supply |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2240414C (en) |
-
1996
- 1996-12-10 CA CA 2240414 patent/CA2240414C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2240414C (en) | 2007-01-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0715389B1 (en) | Contactless battery charging system with high voltage cable | |
TW429659B (en) | High voltage cable interlock circuit | |
SE9604814D0 (en) | Power modulator | |
TW223713B (en) | Earth fault circuit breaker | |
CA2178356A1 (en) | A high voltage electric power line current limiter | |
CA2244183A1 (en) | Dual trip level ground fault interrupter | |
ES2003395A6 (en) | Rfi suppression technique for switching circuits. | |
JPS6432580A (en) | Electric source for video equipment | |
CA2240414A1 (en) | Isolated electrical power supply | |
WO1999049559A3 (en) | Method and device for suppressing interference in frequency converters | |
AU4532000A (en) | An electrical machine winding ground-fault protection system | |
JPS547531A (en) | Dc power source equipment | |
ES8103519A1 (en) | Radio frequency generators. | |
EP1183763B8 (en) | An electrical machine winding ground-fault protection system | |
RU97113990A (en) | DEVICE FOR REDUCING EQUIPMENT CURRENTS AND RESTRICTING SHORT CURRENT CURRENTS | |
CA2151305A1 (en) | Isolated constant wattage lamp ballast | |
DE59200812D1 (en) | POWER CONVERTER. | |
KR20240004194A (en) | Temperature controller circuit for transformers with dc-dc converter and individual outputs on r, s and t phases | |
CA2325592A1 (en) | Power supply with multiple ac input voltages | |
IE911829A1 (en) | Electrostatically chargeable holding board | |
RU2036979C1 (en) | Power cable metal sheath electrochemical protection method | |
RU95102587A (en) | Secondary power supply | |
RU1839648C (en) | Welding transformer | |
JPH0358512A (en) | Noise filter | |
SU1309159A1 (en) | Device for differential protection of transformer with controlling voltage under load |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20131210 |