RESET FLIP-FLOP Russian patent published in 1997 - IPC

FIELD: automatic control equipment. SUBSTANCE: information is recorded in the flip-flop in the form of magnetization of magnetosaturable cores of two transformers. The transformers have three windings each. Two communicating windings of each transformer are connected in pairs to opposite-wound windings of the other transformer, and the third windings are connected in series with a capacitor and parallel- connected to the power source. At the instant when the power supply is cut in a capacitor charging pulse arises in these windings. Under the action of charging current in those windings, where charging current causes a reversal of magnetization of the core, a voltage pulse arises that is applied to the base of the transistor, which did not conduct current before the power supply was cut off. The flip-flop gets reset. When the power supply is cut off, the capacitor gets discharged via the diode shunting it. EFFECT: enhanced reliability of the automatic control systems, prevented loss of information recorded on the flip-flop at an unforeseen cutoff of supply voltage. 1 dwg