Battery operated smoke detector electronics

Details Battery operated smoke detector electronics Battery operated smoke detector electronics

1978-01-09

1980-05-27

Caldwell, Sr.

Communications: electrical

Condition responsive indicating system

Specific condition

250381, 331113R, 340636, G08B 1710

Patent

active

042053064

ABSTRACT:
Improvements in battery operated smoke detector electronics including micro power astable multi-vibrator circuitry which has fast reliable switching of the inverters and electronic circuitry for single or dual ionization chamber smoke detector which maintains constant smoke detector sensitivity throughout the usable life of the battery.

REFERENCES:
patent: 3969635 (1976-07-01), Wilke
patent: 4020479 (1977-04-01), Conforti et al.
patent: 4083037 (1978-04-01), Larsen
patent: 4097851 (1978-06-01), Klein

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