| 摘要 |
FIELD: fire safety. ^ SUBSTANCE: heat fire detector by Misevich, which comprises a light-emitting diode indicator, a transistor and a diode, a transistor switch and two capacitors, five resistors, a current-limiting element and two input terminals, differing by the fact that it comprises an additional stabilitron, the transistor performs the function of a heat sensor, and the current-limiting element performs the function of a thermally independent current stabiliser. In the proposed heat fire detector by Misevich, due to the transistor usage as a heat sensor, the detector actuation temperature stability is ensured even under high vibration conditions. ^ EFFECT: simplified setting of the detector actuation temperature by a simple ratio of resistor resistances, elimination of vibration effect at the actuation temperature. ^ 1 dwg |
