Power source voltage checking device particularly for checking t

Details Power source voltage checking device particularly for checking t Power source voltage checking device particularly for checking t

1980-09-09

1983-03-08

Tokar, Michael J.

Electricity: measuring and testing

Electrolyte properties

Using a battery testing device

324433, 324436, G01N 2742

Patent

active

043762654

ABSTRACT:
In the disclosed device, a signal forming circuit produces a signal having a frequency corresponding to the voltage of a power source. A level detector detects the level of the voltage of the power source and is arranged to produce a signal when the voltage of the power source drops below a predetermined level. A control circuit coupled to the signal forming circuit is arranged to change the frequency of the signal produced by the signal forming circuit in response to the signal produced by the detector. An indicator operates at the frequency of the signal produced by the signal forming circuit. In a specific embodiment, a detector detects whether the voltage of a battery is at and below a first level, between the first level and a second higher level, and at and higher than the second level. A signal former responds to the detector for producing a first signal having a frequency below a first frequency when the voltage is below the second level, a second signal having a frequency twice the first frequency when the voltage is at the second level, and a signal having a frequency higher than the frequency of the second signal when the voltage is above the second level. An indicator responds to the signal former to operate at the frequency of the signal former.

REFERENCES:
patent: 3196357 (1965-07-01), Hoag
patent: 4163193 (1979-07-01), Kamiya
patent: 4258999 (1981-03-01), Tominaga

Affiliated with

Also associated with

Rating

Power source voltage checking device particularly for checking t does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power source voltage checking device particularly for checking t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power source voltage checking device particularly for checking t will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1735447