Apparatus with rechargeable batteries and a device for calculati

Details Apparatus with rechargeable batteries and a device for calculati Apparatus with rechargeable batteries and a device for calculati

1996-12-11

1998-08-04

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

320136, 320DIG21, 324427, 340636, H02J 700

Patent

active

057899010

ABSTRACT:
Apparatus with rechargeable battery (B), a load (MR) and a power supply (PS) for charging the battery (B). When the load (MR) receives current from the battery (B) the charge consumed by the load (MR) is measured by means of a series resistor (RS) and a voltage-to-frequency converter (VFC). A microcontroller (MC) computes the average charge consumed per session of usage and computes the number of remaining sessions of usage from the actual charge in the battery (B) and the average charge per session and shows this number on a display (D).

REFERENCES:
patent: 4638237 (1987-01-01), Fernandez
patent: 5130659 (1992-07-01), Sloan
patent: 5144218 (1992-09-01), Bosscha
patent: 5182655 (1993-01-01), Motoyannagi
patent: 5248929 (1993-09-01), Burke
patent: 5333176 (1994-07-01), Burke et al.
patent: 5455499 (1995-10-01), Uskali et al.

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