Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1991-12-19
1993-01-19
Sikes, William L.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
328 27, 328186, 307227, H03B 2800, H03B 1900, H03K 302, H03K 402
Patent
active
051809877
ABSTRACT:
Many electronic systems such as telephone systems require highly accurate DC-to-AC signal generators such as sine wave generators. A sine wave generator according to the present invention includes a pair of multiplexers, each receiving a plurality of DC voltages from a voltage divider network and having a common output in a summing circuit to produce a sine wave at a predetermined frequency. The multiplexers are controlled by a single up/down counter element which drives the multiplexers to produce identical waveforms in each of the four quadrants of the sine wave. The sine wave frequency can be controlled by controlling a signal provided to the up/down counter.
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NEC America Inc.
Sikes William L.
Tran Sinh
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