| 摘要 |
An ionization fire-signal device with an ionized measuring chamber, a reference element connected in series with the reference chamber, an amplifier stage controlled by the electric potential of the connection point of the measuring chamber and the reference element and comprising a field effect transistor, and a signal circuit controlled by the amplifier stage and comprising another transistor. A bistable behavior of the ionization fire-signal device is achieved by a positive signal feedback from the signal circuit to the substrate of the field effect transistor.
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