Efficient battery operated inverter circuit for capacitive loads

Details Efficient battery operated inverter circuit for capacitive loads Efficient battery operated inverter circuit for capacitive loads

1995-06-15

1996-06-11

Pascal, Robert

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

315209R, 315224, 315226, 315291, 315308, 315DIG7, G09G 310

Patent

active

055258697

ABSTRACT:
In a switching inverter where transistor switches are controlled so as to provide current through an inductor which is connected in series with the switches across a battery so as to power a capacitive load (such as an electroluminescent lamp) with higher voltage than the battery voltage, control current for the switches and particularly the emitter to base current therethrough is shared by connecting the bases of these transistors via a current limiting resistor. Using the same base current reduces the battery drain and improves the efficiency (power applied to the load versus battery power drawn) of the inverter.

REFERENCES:
patent: 4253097 (1981-02-01), Hochstrate
patent: 4527096 (1985-07-01), Kindlmann
patent: 4937647 (1990-06-01), Sutton
patent: 5027040 (1991-06-01), Ikeda et al.
patent: 5313141 (1994-05-01), Kimball
patent: 5323305 (1994-06-01), Ikeda et al.
patent: 5336978 (1994-08-01), Alessio
patent: 5347198 (1994-09-01), Kimball

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