FIELD: electricity.
SUBSTANCE: device to monitor a contact sensor comprises two control channels, each comprising an electronic switch, a regulator and a registrator of current, the first and second electronic switches, a line of communication with a controlled sensor, power supply buses and a device outlet. At the same time the electronic switch, the regulator and the registrator of current, the first and second electronic switches are shunted by double-sided voltage reference diodes.
EFFECT: increased functional reliability and expansion of functional capabilities of a device due to realisation of control over contact sensor condition with current, automatic control of device serviceability, introduction of a reserve control channel in case of one possible fault occurrence.
1 dwg
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