EP 0113451 B1 19871014 - INVERTER WITH A LOAD CIRCUIT COMPRISING A SERIES RESONANT CIRCUIT AND A DISCHARGE LAMP
Title (en)
INVERTER WITH A LOAD CIRCUIT COMPRISING A SERIES RESONANT CIRCUIT AND A DISCHARGE LAMP
Publication
Application
Priority
DE 3246454 A 19821215
Abstract (en)
[origin: US4547706A] In an inverter controlled with a firing unit connected to switches and defining an operating frequency, a resonant frequency of a series oscillating circuit of the inverter connected to one of the switches is placed below this operating frequency. Given this operating situation, a short of the d.c. voltage source is impossible. Given, for example, unfavorable component tolerances, however, the operating frequency can be moved close to the resonant frequency and cause impermissibly high voltages at the components. Such a voltage rise is limited according to the invention by means of a voltage-dependent resistor. It preferably lies in series with a capacitor and takes care of a voltage-dependent shift of the resonant frequency.
IPC 1-7
IPC 8 full level
H02H 9/04 (2006.01); H05B 41/24 (2006.01); H05B 41/26 (2006.01); H05B 41/298 (2006.01)
CPC (source: EP US)
H05B 41/2985 (2013.01 - EP US); Y10S 315/07 (2013.01 - EP US)
Citation (examination)
DE 3112281 A1 19821007 - SIEMENS AG [DE]
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0113451 A1 19840718; EP 0113451 B1 19871014; AT E30290 T1 19871015; DE 3246454 A1 19840620; DE 3374112 D1 19871119; DK 159038 B 19900820; DK 159038 C 19910128; DK 577083 A 19840616; DK 577083 D0 19831214; FI 77135 B 19880930; FI 77135 C 19890110; FI 834184 A0 19831115; FI 834184 A 19840616; JP H0311516 B2 19910218; JP S59132597 A 19840730; NO 160960 B 19890306; NO 160960 C 19890614; NO 834564 L 19840618; SU 1351527 A3 19871107; US 4547706 A 19851015; ZA 839305 B 19840829
DOCDB simple family (application)
EP 83112488 A 19831212; AT 83112488 T 19831212; DE 3246454 A 19821215; DE 3374112 T 19831212; DK 577083 A 19831214; FI 834184 A 19831115; JP 23491183 A 19831212; NO 834564 A 19831212; SU 3673666 A 19831213; US 56167583 A 19831215; ZA 839305 A 19831214