Patent US3423663A successfully refreshed from Google Patents.
US3423663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase demodulated high frequency bridge inverter
Assignee: ELGAR ELECTRONICS Corp A CORP OF
•
Filing: 1966-08-09
•
Granted: 1969-01-21
•
Expires: 1986-08-09
Abstract
No abstract record available.
Inventors
- 👤 Clifford L Payne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:06
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H02M7/538; H02M7/53803; H02M7/53806; B; B60; B60Q; B60Q9/00; B60Q9/001; H02M7/4807
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
338 words
A PHASE DEMODULATED HIGH FREQUENCY BRIDGE INVERTER INCLUDING A DIRECT CURRENT SOURCE, A CONTROL VOLTAGE SUPPLY CONNECTED TO THE DIRECT CURRENT SOURCE FOR PROVIDING POWER FOR THE CONTROL FUNCTIONS OF THE INVERTER, A HIGH FREQUENCY OSCILLATOR CONNECTED TO THE CONTROL VOLTAGE SUPPLY, A FIRST FLIP-FLOP CONNECTED TO THE HIGH FREQUENCY OSCILLATOR, A FIRST DRIVE AMPLIFIER CONNECTED TO THE FIRST FLIP FLOP, A POWER AMPLIFIER CONNECTED TO THE FIRST DRIVE AMPLIFIER, SAID POWER AMPLIFIER BEING ALSO CONNECTED TO THE DIRECT CURRENT SOURCE AND BEING DRIVEN BY THE HIGH FREQUENCY OSCILLATOR THROUGH THE FIRST FLIP-FLOP AND THE FIRST DRIVE AMPLIFIER, SAID POWER AMPLIFIER CONVERTING DIRECT CURRENT POWER FROM THE DIRECT CURRENT SOURCE TO ALTERNATING CURRENT SQUARE WAVE POWER, A PHASE DEMODULATOR CONNECTED TO THE POWER AMPLIFIER, SAID PHASE DEMODULATOR CONTROLLING THE OUTPUT FREQUENCY, AMPLITUDE, AND PHASE, A FILTER CONNECTED TO THE PHASE DEMODULATOR INTO WHICH THE OUTPUT OF THE POWER AMPLIFIER IS FED, AN OUTPUT REFERENCE OSCILLATOR CONNECTED BETWEEN THE CONTROL VOLTAGE SUPPLY AND THE HIGH FREQUENCY OSCILLATOR, A VOLTAGE COMPARATOR CONNECTED TO THE OUTPUT REFERENCE OSCILLATOR AND TO THE OUTPUT FROM THE FILTER, SAID VOLTAGE COMPARATOR COMPARING THE OUTPUT OF THE FILTER TO THE SINE WAVE OF THE OUTPUT REFERENCE OSCILLATOR, A RAMP GENERATOR CONNECTED BETWEEN THE HIGH FREQUENCY OSCILLATOR AND THE FIRST FLIP-FLOP, A FIRST MODULATOR CONNECTED BETWEEN THE RAMP GENERATOR AND THE VOLTAGE COMPARATOR, A SECOND MODULATOR CONNECTED BETWEEN THE RAMP GENERATOR AND THE VOLTAGE COMPARATOR, THE FIRST AND SECOND MODULATORS BEING INTERCONNECTED AND BEING DRIVEN BY THE RAMP GENERATOR AND VOLTAGE COMPARATOR, A SECOND FLIP-FLOP CONNECTED BETWEEN THE FIRST FLIP-FLOP AND THE FIRST MODULATOR, A THIRD FLIP-FLOP CONNECTED BETWEEN THE FIRST FLIP-FLOP AND THE SECOND MODULATOR, THE SECOND AND THIRD FLIP-FLOPS BEING INTERCONNECTED, A SECOND DRIVE AMPLIFIER CONNECTED BETWEEN THE SECOND FLIP-FLOP AND THE PHASE DEMODULATOR, AND A THIRD DRIVE AMPLIFIER CONNECTED BETWEEN THE THIRD FLIP-FLOP AND THE PHASE DEMODULATOR, THE OUTPUTS OF THE FIRST AND SECOND MODULATORS TRIGGERING THE SECOND AND THIRD FLIP-FLOPS TO DRIVE THE PHASE DEMODULATOR THROUGH THE SECOND AND THIRD DRIVE AMPLIFIERS.
Claim 2
Dependent Claim
338 words
A PHASE DEMODULATED HIGH FREQUENCY BRIDGE INVERTER INCLUDING A DIRECT CURRENT SOURCE, A CONTROL VOLTAGE SUPPLY CONNECTED TO THE DIRECT CURRENT SOURCE FOR PROVIDING POWER FOR THE CONTROL FUNCTIONS OF THE INVERTER, A HIGH FREQUENCY OSCILLATOR CONNECTED TO THE CONTROL VOLTAGE SUPPLY, A FIRST FLIP-FLOP CONNECTED TO THE HIGH FREQUENCY OSCILLATOR, A FIRST DRIVE AMPLIFIER CONNECTED TO THE FIRST FLIP FLOP, A POWER AMPLIFIER CONNECTED TO THE FIRST DRIVE AMPLIFIER, SAID POWER AMPLIFIER BEING ALSO CONNECTED TO THE DIRECT CURRENT SOURCE AND BEING DRIVEN BY THE HIGH FREQUENCY OSCILLATOR THROUGH THE FIRST FLIP-FLOP AND THE FIRST DRIVE AMPLIFIER, SAID POWER AMPLIFIER CONVERTING DIRECT CURRENT POWER FROM THE DIRECT CURRENT SOURCE TO ALTERNATING CURRENT SQUARE WAVE POWER, A PHASE DEMODULATOR CONNECTED TO THE POWER AMPLIFIER, SAID PHASE DEMODULATOR CONTROLLING THE OUTPUT FREQUENCY, AMPLITUDE, AND PHASE, A FILTER CONNECTED TO THE PHASE DEMODULATOR INTO WHICH THE OUTPUT OF THE POWER AMPLIFIER IS FED, AN OUTPUT REFERENCE OSCILLATOR CONNECTED BETWEEN THE CONTROL VOLTAGE SUPPLY AND THE HIGH FREQUENCY OSCILLATOR, A VOLTAGE COMPARATOR CONNECTED TO THE OUTPUT REFERENCE OSCILLATOR AND TO THE OUTPUT FROM THE FILTER, SAID VOLTAGE COMPARATOR COMPARING THE OUTPUT OF THE FILTER TO THE SINE WAVE OF THE OUTPUT REFERENCE OSCILLATOR, A RAMP GENERATOR CONNECTED BETWEEN THE HIGH FREQUENCY OSCILLATOR AND THE FIRST FLIP-FLOP, A FIRST MODULATOR CONNECTED BETWEEN THE RAMP GENERATOR AND THE VOLTAGE COMPARATOR, A SECOND MODULATOR CONNECTED BETWEEN THE RAMP GENERATOR AND THE VOLTAGE COMPARATOR, THE FIRST AND SECOND MODULATORS BEING INTERCONNECTED AND BEING DRIVEN BY THE RAMP GENERATOR AND VOLTAGE COMPARATOR, A SECOND FLIP-FLOP CONNECTED BETWEEN THE FIRST FLIP-FLOP AND THE FIRST MODULATOR, A THIRD FLIP-FLOP CONNECTED BETWEEN THE FIRST FLIP-FLOP AND THE SECOND MODULATOR, THE SECOND AND THIRD FLIP-FLOPS BEING INTERCONNECTED, A SECOND DRIVE AMPLIFIER CONNECTED BETWEEN THE SECOND FLIP-FLOP AND THE PHASE DEMODULATOR, AND A THIRD DRIVE AMPLIFIER CONNECTED BETWEEN THE THIRD FLIP-FLOP AND THE PHASE DEMODULATOR, THE OUTPUTS OF THE FIRST AND SECOND MODULATORS TRIGGERING THE SECOND AND THIRD FLIP-FLOPS TO DRIVE THE PHASE DEMODULATOR THROUGH THE SECOND AND THIRD DRIVE AMPLIFIERS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |