Patent US5227712A successfully refreshed from Google Patents.
US5227712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power supply for a battery charger
Assignee: Motorola Solutions Inc
•
Filing: 1991-06-26
•
Granted: 1993-07-13
•
Expires: 2011-06-26
Abstract
Abstract A power supply (100) includes an energy source (102) which provides cyclically varying supply voltage having periodic repeated beginning points. Generally, the beginning points comprise zero potential points of the cyclically varying supply voltage. The energy source is coupled to an energy control means (106) which is responsive to a control setting for controlling an output (108). A controller (114) provides the control setting in response to a feedback signal received from a sensor (116) only at the beginning points and maintains control of the control setting constant until a subsequent beginning point.
Inventors
- 👤 Bertho K. Boman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:52
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/02; H02J7/90; H02J7/96; H02J2207/00; H02J2207/20
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
112 words
A power supply for providing an output having an input for receiving a cyclically varying supply voltage, the cyclically varying supply voltage having periodic beginning points, wherein at said beginning points the output changes do not effect supply current, comprising: synchronization means for synchronizing with the beginning points of the cyclically varying supply voltage; a controller means for providing a control setting; said controller means being responsive to the synchronization means for varying the control setting only at a beginning point, wherein the control setting is maintained constant until a subsequent beginning point; and an energy control means responsive to the control setting for controlling the output only at the beginning point.
Claim 2
Dependent Claim
112 words
A power supply for providing an output having an input for receiving a cyclically varying supply voltage, the cyclically varying supply voltage having periodic beginning points, wherein at said beginning points the output changes do not effect supply current, comprising: synchronization means for synchronizing with the beginning points of the cyclically varying supply voltage; a controller means for providing a control setting; said controller means being responsive to the synchronization means for varying the control setting only at a beginning point, wherein the control setting is maintained constant until a subsequent beginning point; and an energy control means responsive to the control setting for controlling the output only at the beginning point.
Claim 3
Dependent Claim
16 words
The power supply of claim 1, wherein the energy control means comprises a pulse width modulator.
Claim 4
Dependent Claim
20 words
The power supply of claim 1, wherein the energy control means comprises an amplitude control means for controlling the output.
Claim 5
Dependent Claim
36 words
The power supply of claim 1, further including a sensing means for sensing a variable parameter which effects the output, wherein the controller means is also responsive to the sensing means for providing the control setting.
Claim 6
Dependent Claim
18 words
The power supply of claim 4, wherein the variable is sensed synchronous to the cyclically varying supply voltage.
Claim 7
Dependent Claim
21 words
The power supply of claim 1, wherein the control setting is maintained substantially constant for the duration of an entire cycle.
Claim 8
Dependent Claim
18 words
The power supply of claim 1, wherein the cyclically varying supply voltage comprises a substantially sinusoidal supply voltage.
Claim 9
Dependent Claim
21 words
The power supply of claim 7, wherein the control setting is maintained substantially constant for the duration of a half cycle.
Claim 10
Dependent Claim
17 words
The power supply of claim 7, wherein the cyclically varying input voltage comprises an AC line source.
Claim 11
Dependent Claim
16 words
The power supply of claim 9, further including a rectifier for rectifying the AC line source.
Claim 12
Dependent Claim
13 words
The power supply of claim 10, wherein the rectifier comprises a full-wave rectifier.
Claim 13
Dependent Claim
115 words
A charger for providing charging current for a battery having an input for receiving a cyclically varying supply voltage, the cyclically varying supply voltage having periodic beginning points, wherein at said beginning points the output changes do not effect supply current, comprising: a rectifier means; synchronization means for synchronizing with the beginning points of the cyclically varying supply voltage; a controller for providing a control setting, said controller means being responsive to the synchronization means for varying the control setting only a beginning points, wherein the control setting is maintained constant until a subsequent beginning point; and an energy control means responsive to the control setting for controlling the output only at the beginning point.
Claim 14
Dependent Claim
115 words
A charger for providing charging current for a battery having an input for receiving a cyclically varying supply voltage, the cyclically varying supply voltage having periodic beginning points, wherein at said beginning points the output changes do not effect supply current, comprising: a rectifier means; synchronization means for synchronizing with the beginning points of the cyclically varying supply voltage; a controller for providing a control setting, said controller means being responsive to the synchronization means for varying the control setting only a beginning points, wherein the control setting is maintained constant until a subsequent beginning point; and an energy control means responsive to the control setting for controlling the output only at the beginning point.
Claim 15
Dependent Claim
16 words
The battery charger of claim 12, wherein the energy control means comprises a pulse width modulator.
Claim 16
Dependent Claim
21 words
The battery charger of claim 12, wherein the energy control means comprises an amplitude control means for controlling the charging current.
Claim 17
Dependent Claim
35 words
The battery charger of claim 12, further including a sensing means for sensing a variable parameter which effects the output, wherein the controller means is responsive to the sensing means for providing the control setting.
Claim 18
Dependent Claim
14 words
The battery charger of claim 15, wherein the sensing means senses the charging current.
Claim 19
Dependent Claim
16 words
The battery charger of claim 15, wherein the sensing means senses the voltage across the battery.
Claim 20
Dependent Claim
15 words
The battery charger of claim 15, wherein the sensing means senses temperature of the battery.
Claim 21
Dependent Claim
18 words
The battery charger of claim 15, wherein the variable is sensed synchronous to the cyclically varying supply voltage.
Claim 22
Dependent Claim
21 words
The power supply of claim 12, wherein the control setting is maintained substantially constant for the duration of an entire cycle.
Claim 23
Dependent Claim
18 words
The power supply of claim 12, wherein the cyclically varying supply voltage comprises a substantially sinusoidal supply voltage.
Claim 24
Dependent Claim
21 words
The power supply of claim 21, wherein the control setting is maintained substantially constant for the duration of a half cycle.
Claim 25
Dependent Claim
17 words
The power supply of claim 22, wherein the cyclically varying supply voltage comprises an AC line source.
References Cited (Backward Citations)
US4321523A
Cited
US4472672A
Cited
US4549127A
Cited
US4564800A
Cited
US4829225A
Cited
USRE33184E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-12 | 1997-01-11 | 1997-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-12 | 2001-01-11 | 2001-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-12 | 2005-01-11 | 2005-07-13 | $7700.00 | Window Closed / Lapsed |