| 摘要 |
This signal device is used when signalisation in guarding systems is doubled. It signals drops in the supplying pressure below a certain threshold, cuts in the supplying chain, and access to the inside of the signal device. The inlet chain of the signal device is connected via a system tracking the access, to the inlets for a charging and tracking bloc. The first supplying outlet of these blocs are connected simultaneously to one outlet of a storage battery, and to the first supplying inlets of a comparator, a source of support voltage and a switch. The second supplying outlet is connected to the second outlet of the storage battery, while its third common supplying outlet is connected simultaneously to the second supplying inlets of a comparator, a source of support voltage and a switch, connected to the inlets of the generator. To the outlets of the generator is connected a sound transmitter. The information outlet of the charging and tracking bloc is connected to the information inlet of the comparator, whose outlet is connected to the guiding inlet of the switch; the outlet of the support voltage source is linked to the second information inlet of the comparator. The charging and tracking bloc contains two diodes and three resistors.
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