Inverter device

Claim 2

An inverter device comprising an AC power source, a full-wave rectifier for full-wave rectifying an AC input voltage from said AC power source, an inverter connected to output ends of said full-wave rectifier and including a load circuit having an LC resonance series, and a DC power-source capacitor for supplying a DC power to said inverter; said inverter including a pair of switching elements for controlling charging and discharging of said DC power-source capacitor, a charging diode for causing a charge current to flow to said DC power-source capacitor upon regeneration of a power at the inverter, a discharging diode for causing a DC current to flow from said DC power-source capacitor to the inverter, an impedance element connected between said output ends of said full-wave rectifier and part of said load circuit in the inverter, and an inductance component provided in a loop for charging said DC power-source capacitor from said AC power source through said full-wave rectifier and one of said pair of switching elements in the inverter.

Claim 3

An inverter device comprising: an AC power source; a full-wave rectifier DB for full-wave rectifying an AC input voltage from said AC power source; a series circuit, connected through a first, forward diode D3 across both output ends of said rectifier DB, of a second, backward diode D4 and a first capacitor C1; a series circuit, connected through said first, forward diode D3 across both of said output ends of said rectifier DB, of first switching element Q1 and second switching element Q2; a third, forward diode D5 connected between a connecting point of said first and second switching elements Q1 and Q2 and said first capacitor C1; a series circuit of an inductor L1, second capacitor C3 and a load circuit and connected across both ends of said second switching element Q2; a third capacitor C4 connected through said load circuit across both of said output ends of said rectifier DB; and an inductance component inserted in a loop for charging said first capacitor C1 from said AC power source through said rectifier DB and first switching element Q1.

Claim 4

An inverter device comprising: an AC power source; a full-wave rectifier DB for full-wave rectifying an AC input voltage from said AC power source; a series circuit, connected through a first, forward diode D3 across both output ends of said rectifier DB, of a second, backward diode D4 and a first capacitor C1; a series circuit, connected through said first, forward diode D3 across both of said output ends of said rectifier DB, of first switching element Q1 and second switching element Q2; a third, forward diode D5 connected between a connecting point of said first and second switching elements Q1 and Q2 and said first capacitor C1; a series circuit of an inductor L1, second capacitor C3 and a load circuit and connected across both ends of said second switching element Q2; a third capacitor C4 connected through said load circuit across both of said output ends of said rectifier DB; and an inductance component inserted in a loop for charging said first capacitor C1 from said AC power source through said rectifier DB and first switching element Q1.

Claim 5

The inverter device according to claim 2, wherein said inductance component is connected between said second switching element Q2 and a negative side one of said output ends of said rectifier DB.

Claim 6

The inverter device according to claim 3, wherein said inductance component is employed also as a resonating inductance.

Claim 7

The inverter device according to claim 3, wherein a fourth capacitor C2 is connected at an end to an end of said AC power source.

Claim 8

The inverter device according to claim 2, wherein said inductance component is connected between a positive side one of said output ends of said rectifier DB and a connecting point of said first diode D3 and third capacitor C4.

Claim 9

The inverter device according to claim 2, wherein said inductance component is connected between said AC power source and an AC power source side input end of said rectifier DB.

Claim 10

The inverter device according to claim 2, wherein said inductance component is connected between a connecting point of a positive side one of said output ends of said rectifier DB to said third capacitor C4 and said first diode D3.

Claim 11

The inverter device according to claim 2, wherein said inductance component is connected in series with said first capacitor C1 to be between a cathode side of said third diode D5 connected to a positive side output ends of said second switching element Q2 and a negative side output end of the second switching element Q2.

Claim 12

The inverter device according to claim 2, wherein said inductance component is connected in series with said third diode to be between a positive side of said second switching element Q2 and said first capacitor C1.

Claim 13

The inverter device according to claim 2, wherein said third capacitor C4 comprises an impedance including a capacitor.

Claim 14

An inverter device comprising: an AC power source; a full-wave rectifier DB for full-wave rectifying an AC input voltage from said AC power source; a series circuit, connected through a first, forward diode D3 across both output ends of said rectifier DB, of a second, backward diode D4 and a first capacitor C1; a series circuit, connected through said first, forward diode D3 across both of said output ends of said rectifier DB, of first switching element Q1 and second switching element Q2; a third, forward diode D5 connected between a connecting point of said first and second switching elements Q1 and Q2 and said first capacitor C1; a series circuit of an inductor L1, second capacitor C3 and a discharge lamp and connected across both ends of said second switching element Q2; a third capacitor C4 connected through said discharge lamp across both of said output ends of said rectifier DB; a fourth capacitor C2 connected through said discharge lamp across both non-source side terminals of said discharge lamp; and an inductance component inserted in a loop for charging said first capacitor C1 from said AC power source through said rectifier DB and first switching element Q1.

Claim 15

An inverter device comprising: an AC power source; a full-wave rectifier DB for full-wave rectifying an AC input voltage from said AC power source; a series circuit, connected through a first, forward diode D3 across both output ends of said rectifier DB, of a second, backward diode D4 and a first capacitor C1; a series circuit, connected through said first, forward diode D3 across both of said output ends of said rectifier DB, of first switching element Q1 and second switching element Q2; a third, forward diode D5 connected between a connecting point of said first and second switching elements Q1 and Q2 and said first capacitor C1; a series circuit of an inductor L1, second capacitor C3 and a discharge lamp and connected across both ends of said second switching element Q2; a third capacitor C4 connected through said discharge lamp across both of said output ends of said rectifier DB; a fourth capacitor C2 connected through said discharge lamp across both non-source side terminals of said discharge lamp; and an inductance component inserted in a loop for charging said first capacitor C1 from said AC power source through said rectifier DB and first switching element Q1.

Claim 16

An inverter device comprising: an AC power source; a full-wave rectifier DB for full-wave rectifying an AC input voltage from said AC power source; a series circuit, connected through a first, forward diode D3 across both output ends of said rectifier DB, of a second, backward diode D4 and a first capacitor C1; a series circuit, connected through said first, forward diode D3 across both of said output ends of said rectifier DB, of first switching element Q1 and second switching element Q2; a third, forward diode D5 connected between a connecting point of said first and second switching elements Q1 and Q2 and said first capacitor C1; a series circuit of an inductor L1, second capacitor C3 and a load circuit and connected across both ends of said first switching element Q1; a third capacitor C4 connected through said load circuit across both output ends of said rectifier DB; and an inductance component inserted in a loop for charging said first capacitor C1 from said AC power source through said rectifier DB and second switching element Q2.

Claim 17

An inverter device comprising: an AC power source; a full-wave rectifier DB for full-wave rectifying an AC input voltage from said AC power source; a series circuit, connected through a first, forward diode D3 across both output ends of said rectifier DB, of a second, backward diode D4 and a first capacitor C1; a series circuit, connected through said first, forward diode D3 across both of said output ends of said rectifier DB, of first switching element Q1 and second switching element Q2; a third, forward diode D5 connected between a connecting point of said first and second switching elements Q1 and Q2 and said first capacitor C1; a series circuit of an inductor L1, second capacitor C3 and a load circuit and connected across both ends of said first switching element Q1; a third capacitor C4 connected through said load circuit across both output ends of said rectifier DB; and an inductance component inserted in a loop for charging said first capacitor C1 from said AC power source through said rectifier DB and second switching element Q2.

Claim 18

An inverter device comprising: an AC power source; a full-wave rectifier DB for full-wave rectifying an AC input voltage from said AC power source; a series circuit, connected through a first, forward diode D3 across both output ends of said rectifier DB, of a second, backward diode D4 and a first capacitor C1; a series circuit, connected through said first, forward diode D3 across both of said output ends of said rectifier DB, of first switching element Q1 and second switching element Q2; a third, forward diode D5 connected between a connecting point of said first and second switching elements Q1 and Q2 and said first capacitor C1; a series circuit of an inductor L1, second capacitor C3 and a discharge lamp and connected across both ends of said first switching element Q1; a third capacitor C4 connected through said discharge lamp across both output ends of said rectifier DB; a fourth capacitor C2 connected through said discharge lamp across both non-source side terminals of said discharge lamp; and an inductance component inserted in a loop for charging said first capacitor C1 from said AC power source through said rectifier DB and second switching element Q1.

Claim 19

An inverter device comprising: an AC power source; a full-wave rectifier DB for full-wave rectifying an AC input voltage from said AC power source; a series circuit, connected through a first, forward diode D3 across both output ends of said rectifier DB, of a second, backward diode D4 and a first capacitor C1; a series circuit, connected through said first, forward diode D3 across both of said output ends of said rectifier DB, of first switching element Q1 and second switching element Q2; a third, forward diode D5 connected between a connecting point of said first and second switching elements Q1 and Q2 and said first capacitor C1; a series circuit of an inductor L1, second capacitor C3 and a discharge lamp and connected across both ends of said first switching element Q1; a third capacitor C4 connected through said discharge lamp across both output ends of said rectifier DB; a fourth capacitor C2 connected through said discharge lamp across both non-source side terminals of said discharge lamp; and an inductance component inserted in a loop for charging said first capacitor C1 from said AC power source through said rectifier DB and second switching element Q1.

Claim 20

An inverter device comprising: an AC power source; a full-wave rectifier DB for full-wave rectifying an AC input voltage from said AC power source; a series circuit, connected through a first, forward diode D3 across both output ends of said rectifier DB, of a second, backward diode D4 and a first capacitor C1; a series circuit, connected through said first, forward diode D3 across both of said output ends of said rectifier DB, of first switching element Q1 and second switching element Q2; a third, forward diode D5 connected between a connecting point of said first and second switching elements Q1 and Q2 and said first capacitor C1; a series circuit of an inductor L1, second capacitor C3 and a discharge lamp and connected across both ends of said first switching element Q1; a third capacitor C4 connected between one of said output ends of said rectifier DB and said discharge lamp connected to said first, forward diode D3; a fourth capacitor C2 connected through said discharge lamp across both non-source side terminals of said discharge lamp; and an inductance component inserted in a loop for charging said first capacitor C1 from said AC power source through said rectifier DB and second switching element Q2.

Claim 21

An inverter device comprising: an AC power source; a full-wave rectifier DB for full-wave rectifying an AC input voltage from said AC power source; a series circuit, connected through a first, forward diode D3 across both output ends of said rectifier DB, of a second, backward diode D4 and a first capacitor C1; a series circuit, connected through said first, forward diode D3 across both of said output ends of said rectifier DB, of first switching element Q1 and second switching element Q2; a third, forward diode D5 connected between a connecting point of said first and second switching elements Q1 and Q2 and said first capacitor C1; a series circuit of an inductor L1, second capacitor C3 and a discharge lamp and connected across both ends of said first switching element Q1; a third capacitor C4 connected between one of said output ends of said rectifier DB and said discharge lamp connected to said first, forward diode D3; a fourth capacitor C2 connected through said discharge lamp across both non-source side terminals of said discharge lamp; and an inductance component inserted in a loop for charging said first capacitor C1 from said AC power source through said rectifier DB and second switching element Q2.

Claim 22

The inverter device according to claim 15, wherein said inductance component is connected between said first switching element Q1 and said discharge lamp.

Claim 23

An inverter device comprising: an AC power source; a full-wave rectifier DB for full-wave rectifying an AC input voltage from said AC power source; a series circuit, connected through a first, forward diode D3 across both output ends of said rectifier DB, of a second, backward diode D4 and a first capacitor C1; a series circuit, connected through said first, forward diode D3 across both of said output ends of said rectifier DB, of first switching element Q1 and second switching element Q2; a third, forward diode D5 connected between a connecting point of said first and second switching elements Q1 and Q2 and said first capacitor C1; a series circuit of an inductor L1, second capacitor C3 and a load circuit and connected across both ends of said first switching element Q1; a third capacitor C4 connected between one of said output ends of said rectifier DB and said load circuit connected to said first, forward diode D3; and an inductance component inserted in a loop for charging said first capacitor C1 from said AC power source through said rectifier DB and first switching element Q1.

Claim 24

An inverter device comprising: an AC power source; a full-wave rectifier DB for full-wave rectifying an AC input voltage from said AC power source; a series circuit, connected through a first, forward diode D3 across both output ends of said rectifier DB, of a second, backward diode D4 and a first capacitor C1; a series circuit, connected through said first, forward diode D3 across both of said output ends of said rectifier DB, of first switching element Q1 and second switching element Q2; a third, forward diode D5 connected between a connecting point of said first and second switching elements Q1 and Q2 and said first capacitor C1; a series circuit of an inductor L1, second capacitor C3 and a load circuit and connected across both ends of said first switching element Q1; a third capacitor C4 connected between one of said output ends of said rectifier DB and said load circuit connected to said first, forward diode D3; and an inductance component inserted in a loop for charging said first capacitor C1 from said AC power source through said rectifier DB and first switching element Q1.

Claim 25

The inverter device according to claim 17, wherein said inductance component is connected between said first switching element Q1 and said load circuit.

Claim 26

The inverter device according to claim 17, wherein said load circuit is provided with a transformer connected to said discharge lamp in its secondary side coil, and fourth capacitor C2 is connected between non-source side terminals of said discharge lamp.

Claim 27

The inverter device according to claim 17, wherein sixth diode D6 is connected between one of said output ends of said rectifier DB and a connecting point of said first diode D3 and said third capacitor C4.

Claim 28

An inverter device comprising: an AC power source; a full-wave rectifier DB for full-wave rectifying an AC input voltage from said AC power source; a series circuit, connected through a first, forward diode D3 across both output ends of said rectifier DB, of a second, backward diode D4 and a first capacitor C1; a series circuit, connected through said first, forward diode D3 across both of said output ends of said rectifier DB, of first switching element Q1 and second switching element Q2; a third, forward diode D5 connected between a connecting point of said first and second switching elements Q1 and Q2 and said first capacitor C1; a series circuit of an inductor L1, second capacitor C3 and a discharge lamp and connected across both ends of said first switching element Q1; a third capacitor C4 connected between one of said output ends of said rectifier DB and the series circuit of said second capacitor C3 and said discharge lamp connected to said first, forward diode D3; a fourth capacitor C2 connected through said discharge lamp across both non-source side terminals of said discharge lamp; and an inductance component inserted in a loop for charging said first capacitor C1 from said AC power source through said rectifier DB and first switching element Q1.

Claim 29

An inverter device comprising: an AC power source; a full-wave rectifier DB for full-wave rectifying an AC input voltage from said AC power source; a series circuit, connected through a first, forward diode D3 across both output ends of said rectifier DB, of a second, backward diode D4 and a first capacitor C1; a series circuit, connected through said first, forward diode D3 across both of said output ends of said rectifier DB, of first switching element Q1 and second switching element Q2; a third, forward diode D5 connected between a connecting point of said first and second switching elements Q1 and Q2 and said first capacitor C1; a series circuit of an inductor L1, second capacitor C3 and a discharge lamp and connected across both ends of said first switching element Q1; a third capacitor C4 connected between one of said output ends of said rectifier DB and the series circuit of said second capacitor C3 and said discharge lamp connected to said first, forward diode D3; a fourth capacitor C2 connected through said discharge lamp across both non-source side terminals of said discharge lamp; and an inductance component inserted in a loop for charging said first capacitor C1 from said AC power source through said rectifier DB and first switching element Q1.

Claim 30

The inverter device according to claim 21, wherein said inductance component is connected between said first switching element Q1 and said discharge lamp.

Claim 31

The inverter device according to claim 21, wherein sixth capacitor C6 is connected across both of said output ends of said rectifier DB through said first diode D3 and said second capacitor C3.