Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1981-12-09
1984-03-27
Heyman, John S.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307273, 328 58, 328 20, 377 47, H03K 504, H03B 1900
Patent
active
044396899
ABSTRACT:
The invention relates to a circuit for controlling the cyclic ratio of a periodic pulse signal.
This circuit comprises a monostable multivibrator receiving the pulse signal at its switching input, a comparator constituted by an operational amplifier respectively receiving at its inputs the direct and complementary output signals of the monostable multivibrator, the output of said amplifier being connected to the conducting period control input of the multivibrator. The operational amplifier also comprises a control input for the offset voltage of the signals applied at its inputs, said control input making it possible to regulate the cyclic ratio of the multivibrator output signals.
Application to frequency multiplication, particularly for four-state modulation by phase displacement.
REFERENCES:
patent: 3646370 (1972-02-01), Lowe
patent: 3820029 (1974-06-01), McKinley
patent: 4277697 (1981-07-01), Hall et al.
Journal "Electronics," vol. 48, No. 15, Jul. 1975.
Journal "The Electronic Engineer," vol. 30, No. 1, Jan. 1971.
Journal "Electronics," vol. 49, No. 15, Jul. 22, 1976.
Journal "EDN Electrical Design News," vol. 23, No. 14, Aug. 5, 1978.
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