US3721890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power supply for a.c. and d.c. drive
Assignee: ELECTRIC REGULATOR CORP
•
Filing: 1972-03-27
•
Granted: 1973-03-20
•
Expires: 1992-03-27
Abstract
Abstract A power supply unit is disclosed including a modular power section which may be converted from D.C. to A.C. operation and vice versa merely by a change in bus bar configuration. The power modules are arranged side by side in two rows on a bus bar assembly on a back panel and comprise a silicon controlled rectifier clamped between a pair of electrically and thermally conductive plates. In the embodiment disclosed, the rectifiers in the top row are facing in one direction while the rectifiers in the bottom row are facing in the opposite direction. Means are provided on the back panel for mounting at least two different alternate bus bar assemblies, one of which is designed to connect the rectifiers in a first operative circuit arrangement for D.C. operation and the other of which is designed to connect the rectifiers in a second operative circuit arrangement for A.C. operation. The modules are provided with a front panel having spaced apertures for access to the quick detachable captive nut assembles used to mount the clamping plates on the bus bars. Those apertures also serve as a convenient gripping means for handling individual modules for repair or replacement.
Inventors
- 👤 J Ettinger
- 👤 C Otteson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:55
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/003; H10; H10W; H10W40/00; H10W40/60; H10W40/611; H10W90/00; H10W40/20; H10W40/231; H10W40/235; H10W40/237
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
205 words
In a power supply unit for converting a multi-phase alternating supply current to either an A.C. or D.C. controlled output current, a power section comprising a base panel of insulating material, a plurality of discrete modules, each of said modules comprising a pair of spaced electrically and thermally conductive plates, a controlled rectifier mounted and electrically connected between said pair of plates, means on said base panel for mounting a plurality of bus bars in selectively different arrangements to define at least first or second bus bar assemblies, and means for mounting said modules on said base panel and electrically connecting them to appropriate points on said bus bars, said first bus bar assembly when so mounted operatively connecting said controlled rectifiers in seriesconnected anode-to-cathode pairs, said pairs being connected in parallel between a pair of input terminals, said second bus bar assembly when so mounted operatively connecting said controlled rectifiers in independent closed loop pairs, the anode and cathode of one of said rectifiers in a pair being connected to cathode Pathode and anode, respectively, of the other rectifier in said pair said rectifiers in each pair being operatively connected in parallel in oppositely facing directions between an input terminal and an output terminal.
Claim 2
Dependent Claim
205 words
In a power supply unit for converting a multi-phase alternating supply current to either an A.C. or D.C. controlled output current, a power section comprising a base panel of insulating material, a plurality of discrete modules, each of said modules comprising a pair of spaced electrically and thermally conductive plates, a controlled rectifier mounted and electrically connected between said pair of plates, means on said base panel for mounting a plurality of bus bars in selectively different arrangements to define at least first or second bus bar assemblies, and means for mounting said modules on said base panel and electrically connecting them to appropriate points on said bus bars, said first bus bar assembly when so mounted operatively connecting said controlled rectifiers in seriesconnected anode-to-cathode pairs, said pairs being connected in parallel between a pair of input terminals, said second bus bar assembly when so mounted operatively connecting said controlled rectifiers in independent closed loop pairs, the anode and cathode of one of said rectifiers in a pair being connected to cathode Pathode and anode, respectively, of the other rectifier in said pair said rectifiers in each pair being operatively connected in parallel in oppositely facing directions between an input terminal and an output terminal.
Claim 3
Dependent Claim
41 words
The power supply unit of clAim 1, wherein said modules are adapted to be operatively mounted on said base with respect to either said first or second bus bar assembly in substantially identical orientation and location relative to said base panel.
Claim 4
Dependent Claim
53 words
The power supply unit of claim 1, wherein said module mounting means comprises a conductive leg extending from said plate and having a laterally extending mounting foot adapted to engage said bus bar structure in surface-to-surface heat and electrically conductive relationship, and means detachably securing said mounting feet to said bus bar structure.
Claim 5
Dependent Claim
59 words
The power supply unit of claim 3, wherein said legs on each pair of mounting plates are spaced from each other in a direction along said plates and wherein said mounting feet on said spaced legs extend inwardly in opposite directions to a position substantially aligned between said pair of plates and spaced in the direction of said plates.
Claim 6
Dependent Claim
77 words
The power supply unit of claim 4, wherein said mounting feet securing means comprises a captive nut assembly associated with each of said mounting feet and wherein said modules each have a front panel disposed generally perpendicular to said mounting plates, said front panel having spaced apertures aligned with said spaced mounting feet, whereby said captive nut assemblies are accessible through said front panel, said apertures being further effective to provide a handle for handling said modules.
Claim 7
Dependent Claim
41 words
The power supply unit of claim 5, wherein said modules are adapted to be operatively mounted on said base with respect to either said first or second bus bar assembly in substantially identical orientation and location relative to said base panel.
Claim 8
Dependent Claim
90 words
The power supply unit of claim 3, wherein said mounting means comprises a mounting panel of electrically insulating material, means securing said mounting panel on said base panel in spaced relationship therewith, a plurality of apertures in said mounting panel, said first and second bus bar assemblies comprising a plurality of elongated bus bars at least some of which are sandwiched between said base panel and said mounting panel and having mounting tabs extending through said apertures in said mounting plate into engagement with said mounting feet on said modules.
Claim 9
Dependent Claim
59 words
The power supply unit of claim 7, wherein said legs on each pair of mounting plates are spaced from each other in a direction along said plates and wherein said mounting feet on said spaced legs extend inwardly in opposite directions to a position substantially aligned between said pair of plates and spaced in the direction of said plates.
Claim 10
Dependent Claim
77 words
The power supply unit of claim 8, wherein said mounting feet securing means comprises a captive nut assembly associated with each of said mounting feet and wherein said modules each have a front panel disposed generally perpendicular to said mounting plates, said front panel having spaced apertures aligned with said spaced mounting feet, whereby said captive nut assemblies are accessible through said front panel, said apertures being further effective to provide a handle for handling said modules.
Claim 11
Dependent Claim
41 words
The power supply unit of claim 9, wherein said modules are adapted to be operatively mounted on said base with respect to either said first or second bus bar assembly in substantially identical orientation and location relative to said base panel.
Claim 12
Dependent Claim
41 words
The power supply unit of claim 7, wherein at least some of said bus bars of said first or second bus bar assemblies are disposed over said mounting panel and cross over others of said bus bars under said mounting panel.
Claim 13
Dependent Claim
41 words
The power supply unit of claim 5, wherein at least some of said bus bars of said first or second bus bar assemblies are disposed over said mounting panel and cross over others of said bus bars under said mounting panel.
Claim 14
Dependent Claim
63 words
The power supply unit of claim 7, wherein said mounting plate securing means comprises electrically conductive fastening means extending through said base panel and said mounting panel, and insulating spacer meaNs mounted concentrically on said fastening means between said base panel and said mounting panel and effective to electrically isolate said fastening means from said bus bars thereby to prevent high voltage arcing.
Claim 15
Dependent Claim
41 words
The power supply unit of claim 13, wherein at least some of said bus bars of said first or second bus bar assemblies are disposed over said mounting panel and cross over others of said bus bars under said mounting panel.
Claim 16
Dependent Claim
59 words
The power supply unit of claim 14, wherein said legs on each pair of mounting plates are spaced from each other in a direction along said plates and wherein said mounting feet on said spaced legs extend inwardly in opposite directions to a position substantially aligned between said pair of plates and spaced in the direction of said plates.
Claim 17
Dependent Claim
77 words
The power supply unit of claim 15, wherein said mounting feet securing means comprises a captive nut assembly associated with each of said mounting feet and wherein said modules each have a front panel disposed generally perpendicular to said mounting plates, said front panel having spaced apertures aligned with said spaced mounting feet, whereby said captive nut assemblies are accessible through said front panel, said apertures being further effective to provide a handle for handling said modules.
Claim 18
Dependent Claim
41 words
The power supply unit of claim 16, wherein said modules are adapted to be operatively mounted on said base with respect to either said first or second bus bar assembly in substantially identical orientation and location relative to said base panel.
References Cited (Backward Citations)
CA874043A
Cited
US3641419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |