| 摘要 |
FIELD: physics; alarm. ^ SUBSTANCE: invention relates to alarms, specifically to trespass alarms. The alarm device has an alarm block, n sections, in each of which first group conductors and second group conductors are stretched between two bars, and resistors. Second group conductors are connected in series and a first group conductor lies between neighbouring second group conductors. According to the invention, sections of conductors are connected in series. Series-connected first and second resistors are connected to the beginning of the second group conductors of the first section. A corresponding resistor is connected in each section in parallel to the series-connected second group conductors, the value of the resistor of which is set depending on the index number of the section. The alarm block is connected to the point of connecting the first and second resistors. ^ EFFECT: simpler design of an alarm device. ^ 1 dwg |
