Switch mode power supply

Details Switch mode power supply Switch mode power supply

1990-05-15

1991-11-26

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315224, 315307, 315DIG7, H05B 4136

Patent

active

050685724

ABSTRACT:
A switched mode power supply for ignition and operation of a high-pressure discharge lamp (5). The switched mode power supply comprises a switching device (1), an inductor (2), capacitive buffer (3) and a rectifier (4) for producing a current through the lamp from an input voltage. In order to supply a switching signal to the switching device, the switched mode power supply is further provided with a control circuit (I). A detector circuit (20) provides current detection of the inductor current and at the same time serves to produce the switching signal.

REFERENCES:
patent: 4441053 (1984-04-01), Daspit
patent: 4485434 (1984-11-01), Beeston et al.
patent: 4594531 (1986-06-01), Ganser et al.

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