Direct current to alternating current electronic inverter with o

Details Direct current to alternating current electronic inverter with o Direct current to alternating current electronic inverter with o

1974-11-06

1976-03-23

Shoop, William M.

321 45R, H02M 118

Patent

active

039463010

ABSTRACT:
A high-efficiency, low-cost D.C. to A.C. electronic inverter generates sinusoidal ouptut voltage(s) by utilization of an oscillator and divider circuitry that generates extremely precise symmetrical control signals. These control signals cause a push-pull amplifier comprising power switch drive transistors to periodically alternately energize power switches comprising two banks of matched output transistors, that in turn generate high current inputs to a ferro-resonant transformer. The transformer is tuned to provide the desired output sinusoidal voltage.
The inverter incorporates unique overload and short-circuit protection electronics that prevent catastrophic destruction of the power switch drive transistors as well as the power switch transistors. Furthermore, to maximize the inverter's efficiency, the power switch driving circuit receives electrical energy from the ferro-resonant transformer in order to insure deep saturation of the power switch transistors. In addition, the push-pull amplifier incorporates further electronics for preventing driving of the power switch drive transistors during failure in the oscillator or divider circuitry.

REFERENCES:
patent: 3327201 (1967-06-01), Brantley, Jr.
patent: 3341765 (1967-09-01), Rogers, Jr. et al.
patent: 3341766 (1967-09-01), Rhyne, Jr.
patent: 3461374 (1969-08-01), Rhyne, Jr.
patent: 3601680 (1971-08-01), Beckwith
patent: 3721836 (1973-03-01), Rippel
patent: 3816809 (1974-06-01), Kuster

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