Backslope regulator system
US6388906B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 20, 2001 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Apr 20, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/2176
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A regulator system includes a circuit regulating the output of a power supply such as a capacitive input filter power supply and preferably also a transformer and full-wave diode bridge. Included are a ramp generator, a zero crossing detector synchronizing the linear ramp cycle of the ramp generator with the input AC waveform, a peak voltage detector storing the maximum voltage reached by the ramp generator, a resistive divider to reduce the peak detector voltage to a scaled voltage value corresponding to a position in time in the AC waveform below the peak voltage, a timing window comparator comparing the scaled voltage with the instantaneous ramp voltage to establish a time window signal, a conduction angle ramp generator to synchronize the start of the maximum conduction ramp voltage with the beginning of the time window and the occurrence of the minimum conduction ramp voltage with the next zero crossing of the input AC waveform, an error amplifier comparing the average output voltage of the power supply to a reference voltage to generate an error voltage, and an output comparator comparing the error voltage to the conduction ramp voltage to activate power opto-triacs connected…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.