Low voltage alert circuit

Details Low voltage alert circuit Low voltage alert circuit

1988-01-04

1989-05-09

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

340636, G08B 2100

Patent

active

048292907

ABSTRACT:
The alert circuit includes a minimum number of inexpensive descrete electronic components to provide a flashing alert when battery voltage drops below a predetermined trigger voltage. A single unijunction transistor circuit functions as a combination low voltage detector and oscillator to output periodic pulses to an LED annunciator circuit when battery voltage is low.

REFERENCES:
patent: 3810144 (1974-05-01), Clouse

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