US4333133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power source with an electronic impedance changer
Assignee: ITT Inc
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Filing: 1980-09-22
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Granted: 1982-06-01
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Expires: 2000-09-22
Abstract
Abstract A circuit arrangement to provide a fixed voltage source in series with an arbitrarily chosen impedance of any magnitude and phase shift having very low power dissipation and capable of being fabricated on silicon integrated chips is disclosed. The circuit arrangement includes a sensing resistor to sense the output current of a power converter which is amplified and fed back with an appropriate phase shift to control the output voltage of the converter. An independent control signal may be combined with the fed back voltage to change the chosen impedance to another type of impedance.
Inventors
- 👤 Joseph Pernyeszi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:44
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/145; H02M3/155; H02M3/156
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
97 words
A circuit arrangement to provide a fixed voltage source in series with an arbitrarily chosen impedance of only magnitude and phase angle comprising: a power converter providing an output current and output voltage; first means coupled to the output of said converter to sense said output current; second means coupled to said first means for amplifying said sensed output current and imparting a predetermined phase shift thereto to provide a control voltage; and third means coupled to said second means and said converter to couple said control voltage to said converter to control said output voltage thereof.
Claim 2
Dependent Claim
97 words
A circuit arrangement to provide a fixed voltage source in series with an arbitrarily chosen impedance of only magnitude and phase angle comprising: a power converter providing an output current and output voltage; first means coupled to the output of said converter to sense said output current; second means coupled to said first means for amplifying said sensed output current and imparting a predetermined phase shift thereto to provide a control voltage; and third means coupled to said second means and said converter to couple said control voltage to said converter to control said output voltage thereof.
Claim 3
Dependent Claim
33 words
A circuit arrangement according to claim 1, further including a control signal coupled to said third means for combining with said control voltage to change said chosen impedance to another type of impedance.
Claim 4
Dependent Claim
22 words
A circuit arrangement according to claim 2, wherein said first means is a resistor in series with the output of said converter.
Claim 5
Dependent Claim
15 words
A circuit arrangement according to claim 3, wherein said resistor has a low resistance value.
Claim 6
Dependent Claim
15 words
A circuit arrangement according to claim 4, wherein said resistance value is approximately one ohm.
Claim 7
Dependent Claim
32 words
A circuit arrangement according to claims 3, 4 or 5, wherein said second means includes an amplifier circuit having said predetermined phase shift to provide an inductive impedance for said chosen impedance.
Claim 8
Dependent Claim
15 words
A circuit arrangement according to claim 6, wherein said third means includes a summing circuit.
Claim 9
Dependent Claim
16 words
A circuit arrangement according to claim 6, wherein said third means includes a summing amplifier circuit.
Claim 10
Dependent Claim
32 words
A circuit arrangement according to claims 3, 4, or 5, wherein said second means includes an amplifier circuit having said predetermined phase shift to provide a capacitive impedance for said chosen impedance.
Claim 11
Dependent Claim
15 words
A circuit arrangement according to claim 9, wherein said third means includes a summing circuit.
Claim 12
Dependent Claim
16 words
A circuit arrangement according to claim 9, wherein said third means includes a summing amplifier circuit.
Claim 13
Dependent Claim
35 words
A circuit arrangement according to claims 3, 4, or 5 wherein said second means includes an amplifier circuit having said predetermined phase shift equal to zero to provide a resistive impedance for said chosen impedance.
Claim 14
Dependent Claim
15 words
A circuit arrangement according to claim 12, wherein said third means includes a summing circuit.
Claim 15
Dependent Claim
16 words
A circuit arrangement according to claim 12, wherein said third means includes a summing amplifier circuit.
Claim 16
Dependent Claim
22 words
A circuit arrangement according to claim 1, wherein said first means is a resistor in series with the output of said converter.
Claim 17
Dependent Claim
15 words
A circuit arrangement according to claim 15, wherein said resistor has a low resistance value.
Claim 18
Dependent Claim
15 words
A circuit arrangement according to claim 16, wherein said resistance value is approximately one ohm.
Claim 19
Dependent Claim
32 words
A circuit arrangement according to claims 15, 16 or 17, wherein said second means includes an amplifier circuit having said predetermined phase shift to provide an inductive impedance for said chosen impedance.
Claim 20
Dependent Claim
25 words
A circuit arrangement according to claim 18, wherein said third means includes a conductor coupled between the output of said amplifier circuit and said converter.
Claim 21
Dependent Claim
32 words
A circuit arrangement according to claims 15, 16 or 17, wherein said second means includes an amplifier circuit having said predetermined phase shift to provide a capacitive impedance for said chosen impedance.
Claim 22
Dependent Claim
25 words
A circuit arrangement according to claim 20, wherein said third means includes a conductor coupled between the output of said amplifier circuit and said converter.
Claim 23
Dependent Claim
35 words
A circuit arrangement according to claims 15, 16 or 17, wherein said second means includes an amplifier circuit having said predetermined phase shift equal to zero to provide a resistive impedance for said chosen impedance.
Claim 24
Dependent Claim
25 words
A circuit arrangement according to claim 22, wherein said third means includes a conductor coupled between the output of said amplifier circuit and said converter.
References Cited (Backward Citations)
US4146832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |