FIELD: fire alarms, possible use in fire alarm systems for detecting increased optical density of air by measuring dissipation intensiveness of infrared light radiation.
SUBSTANCE: result is achieved due to introduction of circuit for controlling clock generator from flush circuit by power voltage, separation of inlet circuit of current key by high frequency filter and logical element AND from outlet of higher order bit of shift register, separation of power currents of current key from other elements of circuit by an integrator, all this providing for stable launch of alarm system every time when feeding voltage is enabled.
EFFECT: increased reliability of alarm due to prevented effect of voltage fall stabilization on logical elements by value less than minimal working voltage value for these logical elements.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SMOKE DETECTOR | 2005 |
|
RU2294018C2 |
| SMOKE FIRE DETECTOR | 2004 |
|
RU2273886C1 |
| SMOKE-SENSITIVE ALARM | 2006 |
|
RU2306614C1 |
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RU2273887C1 |
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|
RU2250505C1 |
| LINEAR SMOKE FIRE ALARM | 2004 |
|
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|
RU2306613C1 |
| FIRE DETECTOR | 2007 |
|
RU2420809C2 |
| HEAT FIRE DETECTOR BY BAKANOV | 2008 |
|
RU2390848C2 |
| SMOKE FIRE ALARM | 2007 |
|
RU2356094C1 |
