DEVICE WHICH MONITORS FAULTS IN POWER SUPPLY OF MICROCOMPUTER Russian patent published in 1997 - IPC

FIELD: computer engineering. SUBSTANCE: device has reset input and at least one additional input. In addition device has alternating power supply, generation circuit which is connected to power supply and outputs potential which defines power supply voltage. Said sensitive terminal is connected to control input of first transistor, which output is connected to additional input of microcomputer. In addition device has second transistor which input is connected to additional input of microcomputer, capacitor and resistor which provides charge current of capacitor. Output terminals of second transistor are connected in parallel to resistor. In addition device has third transistor which control input is connected to common point of resistor and capacitor. Its output is connected to reset input of microcomputer. Said third transistor is rendered conducting and non-conducting depending on charge which is accumulated in capacitor. EFFECT: increased functional capabilities. 6 dwg