H - Electricity – 03 – B
Patent
H - Electricity
03
B
328/50
H03B 19/00 (2006.01) H03K 3/017 (2006.01) H03K 5/00 (2006.01)
Patent
CA 1177909
ABSTRACT OF THE DISCLOSURE The invention relates to a circuit for controlling the cyclic ratio of a periodic pulse signal. This circuit comprises a monostable flip-flop 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 flip- flop, the output of said amplifier being connected to the conducting period control input of the flip- flop. The operational amplifier also comprises a con- trol 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 flip- flop output signals. Application to frequency multi- plication, particularly for four-state modulation by phase displacement.
392307
Chazenfus Henri
Goudreau Gage Dubuc
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