US5010468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power-line-operated high frequency power supply
Assignee: Individual
•
Filing: 1990-01-11
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Granted: 1991-04-23
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Expires: 2010-01-11
Abstract
Abstract In an inverter-type power supply, a self-oscillating full-bridge inverter is powered by unfiltered full-wave-rectified 120 Volt/60 Hz power line voltage and controllably triggered into oscillation each half-cycle of the power line voltage by way of triggering two of the bridge's four transistors into conduction simultaneously. This is accomplished by way of discharging a charged-up capacitor by way of a Diac through a special trigger winding on each of two saturable current feedback transformers; each of which controls a pair of the bridge transistors.
Inventors
- 👤 Ole K. Nilssen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:59
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/338; H02M3/3382; H05; H05B; H05B6/00; H05B6/64; H05B6/66; H05B6/68; H05B6/681; H05B6/682; H05B6/685; Y; Y02; Y02B; Y02B70/00; Y02B70/10
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
212 words
An arrangement comprising: a power line providing an AC voltage at a pair of power line terminals; the AC voltage having a first fundamental period and a first fundamental frequency; and a frequency-converting power supply connected with the power line terminals and operative to provide a high frequency output voltage at a pair of power output terminals; the high frequency output voltage having a second fundamental frequency; the second fundamental frequency being substantially higher than the first fundamental frequency; the frequency-converting power supply including: (i) a rectifier connected with the power line terminals and operative to provide a substantially unfiltered DC voltage at a set of DC terminals; the absolute instantaneous magnitude of the DC voltage being, at least during half of said first fundamental period, substantially equal to that of the AC voltage; and (ii) bridge inverter means connected in circuit between the DC terminals and the power output terminals; the bridge inverter means being operative to provide the high frequency output voltage; the absolute instantaneous magnitude of the high frequency output voltage being substantially equal to that of the DC voltage; whereby, at least during half of said first fundamental period, the absolute instantaneous magnitude of the high frequency output voltage is substantially equal to that of the AC voltage.
Claim 2
Dependent Claim
212 words
An arrangement comprising: a power line providing an AC voltage at a pair of power line terminals; the AC voltage having a first fundamental period and a first fundamental frequency; and a frequency-converting power supply connected with the power line terminals and operative to provide a high frequency output voltage at a pair of power output terminals; the high frequency output voltage having a second fundamental frequency; the second fundamental frequency being substantially higher than the first fundamental frequency; the frequency-converting power supply including: (i) a rectifier connected with the power line terminals and operative to provide a substantially unfiltered DC voltage at a set of DC terminals; the absolute instantaneous magnitude of the DC voltage being, at least during half of said first fundamental period, substantially equal to that of the AC voltage; and (ii) bridge inverter means connected in circuit between the DC terminals and the power output terminals; the bridge inverter means being operative to provide the high frequency output voltage; the absolute instantaneous magnitude of the high frequency output voltage being substantially equal to that of the DC voltage; whereby, at least during half of said first fundamental period, the absolute instantaneous magnitude of the high frequency output voltage is substantially equal to that of the AC voltage.
Claim 3
Dependent Claim
42 words
The arrangement of claim 1 wherein the high frequency output voltage is provided in the form of individual bursts of squarewave voltage separated by periods of zero magnitude; an individual burst occurring at least once during each of said first fundamental periods.
Claim 4
Dependent Claim
33 words
The arrangement of claim 2 wherein: (i) each of said periods of zero magnitude has a duration; and (ii) the bridge inverter means includes control means operative to permit control of this duration.
Claim 5
Dependent Claim
26 words
The arrangement of claim 1 wherein a load means is connected in circuit with the power output terminals; the load means including a tuned L-C circuit.
Claim 6
Dependent Claim
38 words
The arrangement of claim 1 wherein the absolute instantaneous magnitude of the high frequency output voltage is substantially equal to zero except during periods when it is substantially equal to the absolute instantaneous magnitude of the AC voltage.
Claim 7
Dependent Claim
23 words
The arrangement of claim 1 wherein the absolute instantaneous magnitude of the DC voltage is substantially equal to that of the AC voltage.
Claim 8
Dependent Claim
215 words
An arrangement comprising: a power line providing an AC voltage at a pair of power line terminals; the AC voltage having a first fundamental period and a first fundamental frequency; and a frequency-converting power supply connected with the power line terminals and operative to provide a high frequency output voltage at a pair of power output terminals; the high frequency output voltage having a second fundamental frequency; the second fundamental frequency being substantially higher than the first fundamental frequency; the frequency-converting power supply including: (i) a rectifier connected with the power line terminals and operative to provide a DC voltage at a set of DC terminals; the absolute instantaneous magnitude of the DC voltage being substantially equal to that of the AC voltage; and (ii) inverter means connected in circuit between the DC terminals and the power output terminals; the inverter means being operative to provide the high frequency output voltage by way of causing each one of the power output terminals to be electrically and alternatingly connected, substantially without any intervening impedance and as long as the high frequency output voltage is indeed being provided, with one of the DC terminals, thereby to cause the absolute instantaneous magnitude of the high frequency output voltage to be substantially equal to that of the DC voltage.
Claim 9
Dependent Claim
215 words
An arrangement comprising: a power line providing an AC voltage at a pair of power line terminals; the AC voltage having a first fundamental period and a first fundamental frequency; and a frequency-converting power supply connected with the power line terminals and operative to provide a high frequency output voltage at a pair of power output terminals; the high frequency output voltage having a second fundamental frequency; the second fundamental frequency being substantially higher than the first fundamental frequency; the frequency-converting power supply including: (i) a rectifier connected with the power line terminals and operative to provide a DC voltage at a set of DC terminals; the absolute instantaneous magnitude of the DC voltage being substantially equal to that of the AC voltage; and (ii) inverter means connected in circuit between the DC terminals and the power output terminals; the inverter means being operative to provide the high frequency output voltage by way of causing each one of the power output terminals to be electrically and alternatingly connected, substantially without any intervening impedance and as long as the high frequency output voltage is indeed being provided, with one of the DC terminals, thereby to cause the absolute instantaneous magnitude of the high frequency output voltage to be substantially equal to that of the DC voltage.
Claim 10
Dependent Claim
204 words
An arrangement comprising: a power line providing an AC voltage at a pair of power line terminals; the AC voltage having a first fundamental period and a first fundamental frequency; and a frequency-converting power supply connected with the power line terminals and operative to provide a high frequency output voltage at a pair of power output terminals; the high frequency output voltage having a second fundamental period and a second fundamental frequency; the second fundamental frequency being substantially higher than the first fundamental frequency; the frequency-converting power supply including: (i) a rectifier connected with the power line terminals and operative to provide a substantially unfiltered DC voltage at a set of DC terminals; the absolute instantaneous magnitude of the DC voltage being, at least during half of said first fundamental period, substantially equal to that of the AC voltage; and (ii) bridge inverter means connected in circuit between the DC terminals and the power output terminals; the bridge inverter means being operative to provide the high frequency output voltage; the average absolute magnitude of the high frequency output voltage, when averaged over the duration of said second fundamental period, being substantially equal to that of the DC voltage when averaged over the same duration.
Claim 11
Dependent Claim
204 words
An arrangement comprising: a power line providing an AC voltage at a pair of power line terminals; the AC voltage having a first fundamental period and a first fundamental frequency; and a frequency-converting power supply connected with the power line terminals and operative to provide a high frequency output voltage at a pair of power output terminals; the high frequency output voltage having a second fundamental period and a second fundamental frequency; the second fundamental frequency being substantially higher than the first fundamental frequency; the frequency-converting power supply including: (i) a rectifier connected with the power line terminals and operative to provide a substantially unfiltered DC voltage at a set of DC terminals; the absolute instantaneous magnitude of the DC voltage being, at least during half of said first fundamental period, substantially equal to that of the AC voltage; and (ii) bridge inverter means connected in circuit between the DC terminals and the power output terminals; the bridge inverter means being operative to provide the high frequency output voltage; the average absolute magnitude of the high frequency output voltage, when averaged over the duration of said second fundamental period, being substantially equal to that of the DC voltage when averaged over the same duration.
Claim 12
Dependent Claim
128 words
A combination comprising: a source operable to provide a DC voltage having absolute instantaneous magnitude substantially equal to that of an ordinary AC power line voltage; the AC power line voltage having a first fundamental period and a first fundamental frequency; and a full bridge inverter circuit powered from the DC voltage and operative to provide an output of high frequency voltage; the high frequency voltage having a second fundamental period and a second fundamental frequency; the second fundamental frequency being substantially higher than the first fundamental frequency; the high frequency voltage being provided in the form of individual bursts of high frequency AC voltage separated by periods of zero magnitude voltage; the bursts occurring at a frequency equal to a whole multiple of said first fundamental frequency.
Claim 13
Dependent Claim
128 words
A combination comprising: a source operable to provide a DC voltage having absolute instantaneous magnitude substantially equal to that of an ordinary AC power line voltage; the AC power line voltage having a first fundamental period and a first fundamental frequency; and a full bridge inverter circuit powered from the DC voltage and operative to provide an output of high frequency voltage; the high frequency voltage having a second fundamental period and a second fundamental frequency; the second fundamental frequency being substantially higher than the first fundamental frequency; the high frequency voltage being provided in the form of individual bursts of high frequency AC voltage separated by periods of zero magnitude voltage; the bursts occurring at a frequency equal to a whole multiple of said first fundamental frequency.
Claim 14
Dependent Claim
31 words
The combination of claim 9 wherein: (i) each of said periods has a duration; and (ii) the full bridge inverter circuit has control means operative to permit control of this duration.
Claim 15
Dependent Claim
198 words
An arrangement comprising: a power line providing an AC voltage at a pair of power line terminals; the AC voltage having a first fundamental period and a first fundamental frequency; and a frequency-converting power supply connected with the power line terminals and operative to provide a high frequency output voltage at a pair of power output terminals; the high frequency output voltage having a second fundamental frequency; the second fundamental frequency being substantially higher than the first fundamental frequency; the frequency-converting power supply including: (i) a rectifier connected with the power line terminals and operative to provide a DC voltage at a set of DC terminals; the absolute instantaneous magnitude of the DC voltage being substantially equal to that of the AC voltage; and (ii) inverter means connected in circuit between the DC terminals and the power output terminals; the inverter means being operative to provide the high frequency output voltage; the absolute instantaneous magnitude of the high frequency output voltage being substantially equal to that of the DC voltage, except for a part of each of said first fundamental periods; during which part the absolute instantaneous magnitude of the high frequency voltage is substantially equal to zero.
Claim 16
Dependent Claim
198 words
An arrangement comprising: a power line providing an AC voltage at a pair of power line terminals; the AC voltage having a first fundamental period and a first fundamental frequency; and a frequency-converting power supply connected with the power line terminals and operative to provide a high frequency output voltage at a pair of power output terminals; the high frequency output voltage having a second fundamental frequency; the second fundamental frequency being substantially higher than the first fundamental frequency; the frequency-converting power supply including: (i) a rectifier connected with the power line terminals and operative to provide a DC voltage at a set of DC terminals; the absolute instantaneous magnitude of the DC voltage being substantially equal to that of the AC voltage; and (ii) inverter means connected in circuit between the DC terminals and the power output terminals; the inverter means being operative to provide the high frequency output voltage; the absolute instantaneous magnitude of the high frequency output voltage being substantially equal to that of the DC voltage, except for a part of each of said first fundamental periods; during which part the absolute instantaneous magnitude of the high frequency voltage is substantially equal to zero.
Claim 17
Dependent Claim
56 words
The arrangement of claim 11 wherein, as long as the absolute instantaneous magnitude of the high frequency voltage is indeed equal to that of the AC voltage, one of the power output terminals is electrically connected, substantially all of the time and substantially without any intervening impedance, with one or the other of the DC terminals.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-22 | 1994-10-22 | 1995-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-22 | 1998-10-22 | 1999-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-22 | 2002-10-22 | 2003-04-23 | $7700.00 | Window Closed / Lapsed |