Electronic transformer

Described is an electronic transformer designed to operate a low-voltage halogen lamp (1), the transformer having a harmonics filter (R1, R2, L1, C1, C2), an inverter with two switches (2, 3) controlled to switch on and off alternately, a control circuit designed to switch the two switches (2, 3) on...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	GUNTHER JOHLER
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	Described is an electronic transformer designed to operate a low-voltage halogen lamp (1), the transformer having a harmonics filter (R1, R2, L1, C1, C2), an inverter with two switches (2, 3) controlled to switch on and off alternately, a control circuit designed to switch the two switches (2, 3) on and off, and a transformer (16) which delivers the voltage produced at the inverter output to the lamp (1). The control circuit dims the lamp (1) by changing the cycle ratio between the switched-on time for the first switch (2) and the switched-on time for the second switch (3) in the inverter. When the lamp is operating undimmed, the switched-on times are identical for both switches (2, 3).