Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1987-08-13
1988-04-12
Beha, Jr., William H.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307261, 328 29, 328 62, 328158, H03K 5156
Patent
active
047377216
ABSTRACT:
The invention relates to a frequency doubling circuit for the sinusoidal and cosinusoidal signals emitted by an angular step generator. According to the invention, four comparators are provided, while the sinusoidal signal is located at the non-inverting inputs of the first and the second comparator, the inverted sinusoidal signal is located at the inverting input of the first comparator and at the non-inverting input of the fourth comparator, the cosinusoidal signal at the non-inverting input of the third comparator, and the inverted cosinusoidal signal at the inverting inputs of the second to fourth comparator. Further, two XOR gates are provided, while the outputs of the first and third comparator are located at the inputs of the first XOR gate and the outputs of the second and fourth comparator are located at the inputs of the second XOR gate.
REFERENCES:
patent: 4359688 (1982-11-01), Haville
patent: 4390865 (1983-06-01), Lauro
Publication from Components Report XIII (1978) No. 1, Entitled "A New Optoelectronic Incremental Encoder for Control Applications" by Viktor Wendler, pp. 1-5.
Beha Jr. William H.
Morris Jeffrey P.
Siemens Aktiengesellschaft
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