Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1981-02-11
1983-08-30
Brigance, Gerald L.
Communications: electrical
Condition responsive indicating system
Specific condition
340628, 250381, 250384, G08B 1710
Patent
active
044019793
ABSTRACT:
An ionization smoke detector device including means for insuring that adjustment can be made in the triggering potential for the alarm device so that should circumstances change, an operator can make a simple adjustment to take into account the changed circumstances. This means comprises a programmable Zener diode which is connected to a voltage dividing resistance network at the output of a field effect transistor, the other end of the Zener diode being connected to the input of a silicon controlled rectifier device which functions to trigger the alarm.
Another primary feature of the present invention is the provision of a means for testing the operation of the system in such a way that all of the elements of the system will be tested rather than merely some of them.
REFERENCES:
patent: 3665441 (1972-05-01), Suchomel et al.
patent: 3688119 (1972-08-01), Kobayashi
patent: 3792279 (1974-02-01), Sasaki
patent: 3812362 (1974-05-01), Larsen et al.
patent: 3909815 (1975-09-01), Gacogne
patent: 3913082 (1975-10-01), Hamm
patent: 4238788 (1980-12-01), Rosauer et al.
"Adjustable Shunt Regulators", Texas Instruments Bulletin No. DL-S 12414, Sep. 1977.
Brigance Gerald L.
General Signal Corporation
Killian George W.
Kleinman Milton E.
Ohlandt John
LandOfFree
Electrical controls for ionization smoke detector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrical controls for ionization smoke detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrical controls for ionization smoke detector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-908198