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| Number | Title | Issue Date |
| 4706183 | Bridge-type frequency multiplier An AC frequency conversion technique is disclosed using an H-switch toggled at irregular times to yield a chopped sinusoid output waveform of a given fundamental frequency. The irregular switching pattern is a departure from the classical cycloconverter f... | 11/10/1987 |
| 4706184 | Fractional frequency multiplier An AC frequency conversion technique is provided by alternately switching between AC power lines at irregular times to yield a chopped sinusoid switched output waveform of given fundamental frequency. The technique does not rely on an input rectifier brid... | 11/10/1987 |
| 4706174 | Single phase to multiphase frequency multiplier A single to multiphase AC frequency conversion technique is provided by alternately switching between a pair of AC power lines at a plurality of sets of coordinated but irregular times to yield a plurality of chopped sinusoid switched output waveforms eac... | 11/10/1987 |
| 4706175 | Single phase to polyphase bridge-type frequency multiplier A single to multiphase AC frequency conversion technique is provided using H-switches. A plurality of H-switches are toggled in a composite coordinated but irregular timing pattern under control of logic means to yield a plurality of chopped sinusoid swit... | 11/10/1987 |
| 4435750 | Rectified AC frequency converter A simple rectified AC frequency conversion technique is provided by chopping positively and negatively rectified AC signals by alternatively switching therebetween to yield a switched output waveform of given frequency without capacitive filtering to DC. ... | 03/06/1984 |
| 4320531 | Time shared frequency conversion system A frequency conversion system, including a time shared frequency converter and a time shared band limited amplification system, whereby a plurality of information bearing signals are commonly obtained, determined, filtered and amplified over a single path... | 03/16/1982 |
