Power supply and night vision device using the power supply

Details Power supply and night vision device using the power supply Power supply and night vision device using the power supply

2003-12-23

2011-12-20

Fleming, Fritz M (Department: 2836)

Electrical transmission or interconnection systems

Switching systems

Condition responsive

C307S048000, C307S046000, C307S075000, C307S087000

Reexamination Certificate

active

08080904

ABSTRACT:
Disclosed is a power supply (40) and a night vision device using the power supply (40). The power supply (40) comprises a battery (41), a power switch (42), a booster (43) for boosting a battery voltage provided by the battery (41) to an established voltage according to an operation of the power switch (42) and outputting a boost voltage, and a voltage selector (44) for comparing the voltage provided by the battery with a reference voltage (VR), outputting the boost voltage when the battery voltage is below the reference voltage (VR), and outputting the battery voltage when the battery voltage is beyond the reference voltage (VR). The night vision device is operable by voltages supplied from the power supply (40). According to the invention, stable voltages are supplied and batteries (41) are effectively used by supplying constant voltages in the case of using batteries (41) with different voltages, and hence, usage time of the night vision device is increased.

REFERENCES:
patent: 4755725 (1988-07-01), Kastendieck et al.
patent: 5130527 (1992-07-01), Gramer et al.
patent: 6278104 (2001-08-01), Saldana et al.
patent: 2360366 (2001-09-01), None
patent: 09-285106 (1997-10-01), None
patent: 10-197929 (1998-07-01), None
patent: 10-293339 (1998-11-01), None
Machine Translation for JP09-285106.

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